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Indian Journal of Weed Science


Print ISSN: 0253-8050
Online ISSN: 0974-8164

NAAS rating: 5.17

Chief Editor

J.S. Mishra
Dr. J.S. Mishra
Principal Scientist, Division of Crop Research,
ICAR Research Complex for Eastern Region,
Bihar Veterinary College, Patna - 800014 (Bihar)
Mobile - +91 9494240904
Email- editorisws@gmail, jsmishra31@gmail.com

Associate editors

Bhagirath S. Chauhan

Dr. Bhagirath Singh Chauhan
Queensland Alliance for Agricultureand Food Innovation
Level 2, Queensland Bioscience Precinct
The University of Queensland
St Lucia QLD 4069, Australia
Email: b.chauhan@uq.edu.au
A.N. Rao
Dr. A.N. Rao
Hydarabad, INDIA
Mobile Number: +91 9440372165
Email: adusumilli.narayanarao@gmail.com

CALL FOR RESEARCH PAPER

Indian Journal of Weed Science is inviting your articles, review article, Research article and Research note on all topics of weed science. IJWS welcomes quality work that focuses on research, development and review. We are looking forward for strict compliance to the modern age standards in all these fields. Authors across the globe are welcome to submit their research papers in the prestigious journal fulfilling the requisite criterion.

Indian Journal of Weed Science (IJWS) is inviting papers for the VOL-53, ISSUE-1 March-(2021)


Article submission guideline

Enter your login details for IJWS below. If you do not already have an account you will need to.. Register here
Author login
  • Author Instruction
  • Style of Invited paper
  • Style of Research Article
  • Style of Research note

Paper Publication Process –

  • Manuscripts are received online in the editorial office with the certificate that MS has not been sent for consideration in any other journals for consideration.
  • Manuscripts are checked by office for its style and pattern and for plagiarism. If plagiarism is more than 20%, it is not considered and sent back to author for revision and re-submission.
  • If MS is found fit at Editorial office in context to plagiarism and style and pattern, it is sent to Chief Editor for further processing.
  • If chief Editor find the MS suitable for consideration, he shall suggest two name of referees as reviewers either from editorial board or from other institutions of concern discipline for reviewing the MS.
  • Editorial Office shall send the MS for double blind review to the reviewers suggested by Chief Editor.
  • Comments of double -blind reviewers will be sent to corresponding author without disclosing the identity of the reviewers to address the comments and re-submission of MS.
  • In case, one reviewer rejects while other accept the MS, it is sent to third reviewer suggested by Chief Editor.
  • Revised MS is again sent to reviewers to see whether their comments are addressed suitably.
  • On agreeing by the reviewers, the MS is again sent to Chief Editors with comments of reviewers and reply of author to take the final decision.
  • The final decision of Chief Editor is communicated to authors.

CALL FOR RESEARCH PAPER

Indian Journal of Weed Science is inviting your articles, review article, Research article and Research note on all topics of weed science. IJWS welcomes quality work that focuses on research, development and review. We are looking forward for strict compliance to the modern age standards in all these fields. Authors across the globe are welcome to submit their research papers in the prestigious journal fulfilling the requisite criterion.

Indian Journal of Weed Science (IJWS) is inviting papers for the VOL-51, ISSUE-4 December-(2019)


Article submission guideline

Enter your login details for IJWS below. If you do not already have an account you will need to.. Register here
Author login
  • Author Instruction
  • Style of Invited paper
  • Style of Research Article
  • Style of Research note

Paper Publication Process –

  • Manuscripts are received online in the editorial office with the certificate that MS has not been sent for consideration in any other journals for consideration.
  • Manuscripts are checked by office for its style and pattern and for plagiarism. If plagiarism is more than 20%, it is not considered and sent back to author for revision and re-submission.
  • If MS is found fit at Editorial office in context to plagiarism and style and pattern, it is sent to Chief Editor for further processing.
  • If chief Editor find the MS suitable for consideration, he shall suggest two name of referees as reviewers either from editorial board or from other institutions of concern discipline for reviewing the MS.
  • Editorial Office shall send the MS for double blind review to the reviewers suggested by Chief Editor.
  • Comments of double -blind reviewers will be sent to corresponding author without disclosing the identity of the reviewers to address the comments and re-submission of MS.
  • In case, one reviewer rejects while other accept the MS, it is sent to third reviewer suggested by Chief Editor.
  • Revised MS is again sent to reviewers to see whether their comments are addressed suitably.
  • On agreeing by the reviewers, the MS is again sent to Chief Editors with comments of reviewers and reply of author to take the final decision.
  • The final decision of Chief Editor is communicated to authors.
Read More

Guidelines for Authors

Indian Journal of Weed Science is a quarterly journal publishing original research article, research notes, opinion articles and review articles (invited or with prior approval of the title reflecting substantial contributions of the author) covering all areas of weed science research. All contributions must be of a sufficient quality to extend our knowledge in weed science.

The papers submitted should not have been published or communicated elsewhere. Authors will be solely responsible for the factual accuracy of their contribution. Manuscript should not carry any material already published in the same or different forms.

  • Style of Invited paper
  • Style of Research Article
  • Style of Research note

Format

Full length article should be suitably divided into the following sub-sections; ABSTRACT, Key words, INTRODUCTION, MATERIALS AND METHODS, RESULTS AND DISCUSSION and REFERENCES. The heading, introduction need not be mentioned in the text.

Title

The title of article should be informative but concise and should not contain abbreviations. It should indicate the content of the article essential for key word indexing and information retrieval. It should be set in small and bold letters. A good title briefly identifies the subject, indicates the purpose of study and introduces key terms and concepts. Title should not be started with the waste words like 'a study of', 'effect of', 'influence of' , 'some observations on', 'a note of' etc. The title should indicate preferably English name or most popular common name of the crops or organisms studied, wherever relevant. Scientific name can be given in abstract and introduction. Authority for such a name should be given at first mention in the text. A short title should be given for running headlines and should cover the main theme of the article.

Author(s) name(s) and affiliations

The name(s) of the author(s) should be given in small letters with sentence case separated by 'comma' or by 'and'. Institute name where the research was carried out should be given in italics. If authors are of different institutes, these can be mentioned by allotting number like 1, 2 or 3 as superscript over the name of author. The affiliation of such author may be given below of the corresponding author email address. Sometimes authors retire and change frequently and wish to give their current address, this should be given as foot note. Email address of main author or corresponding author should be given at the bottom.

Abstract

The abstract should contain at least one sentence on each of the following: objective of investigation (hypothesis, purpose, collection, result and conclusions). Give complete scientific name for plants or other organisms and full name of any symbol or abbreviations used. There is a need to mention place, name and priod of study in abstract. Emphasis should be given to highlight the results and the conclusion of the study. It should not exceed a total length of 200-250 words. Abstract should not have the words like 'will be explained or will be discussed'.

Key words

(5 6) should be given at the end of the abstract and should be arranged alphabetically. Each key word should be started with capital letter and separated by comma ( , ) from other words.

Introduction

Introduction should be brief and to the point, cover the problem and should justify the work or the hypothesis on which it is based. In introduction, a detail review is not necessary. However, to orient readers, important references about previous concepts and research should be given. It should briefly state the currently available information and should identify the research gap that is expected to be abridged through this investigation. Give preference to recent references from standard research publication unless it is of historical importance or a landmark in that field.

Materials and Methods

This part should begin with information relating to period/season/year and place of study, climate or weather conditions, soil type etc. Treatment details along with techniques and experimental design, replications, plot size etc. should be clearly indicated. Use of symbols for treatments may be avoided and an abbreviation should be fully explained at its first mention. Crop variety, methodology for application and common cultivation practices should be mentioned. Known methods may be just indicated giving reference but new techniques developed and followed should be described in detail. Methods can be divided into suitable sub-headings, typed in bold at first level and in italics at second level, if necessary.

Results and Discussion

Results may be reported and discussed together to avoid duplication. Do not mention and recite the data in the text as such given in the table. Instead interpret it suitably by indicating in terms of per cent, absolute change or any other derivations. Relate results to the objectives with suitable interpretation of the references given in the introduction. If results differ from the previous study, suitable interpretation and justification should be given. Repeated use of statements like 'our results are in agreement’ or ‘similar results were reported’ 'should be avoided. At the end of results and discussion, conclusion of the study should be given in 2-3 sentences along with suggestion for further study, if any. All statistical comparisons among treatments may be made at P=0.05 level of probability.

Acknowledgement

The authors may place on record the help and cooperation or any financial help received from any source, person or organization for this study. This should be very brief.

References

Only relevant and recent references of standard work should be quoted. Preference should be given to quote references of journals over proceedings or reports. In general, not more than 15 references should be quoted in full paper and 5 in short communication. However, in review article, emphasis should be given to quote more references with each valid statement/findings in the text. There is no need to give references for standard procedures of soil and plant analysis, and for routine statistical analysis in practice, only the methodology may be indicated. As a thumb rule, all the references quoted in the text must appear at the end of the article and vice-verse. It has been decided to use full name of the journal after the year 2011 onwards. Therefore, references should include names of all authors, year, full title of the article quoted, full name of the journal in italics (no abbreviations), volume number (in Bold), issue number (in brackets) and pages. For books, monographs, theses etc. full title in italics, publisher or university name, volume no., if any, and relevant page range or total no. of pages should be given. The list of references should be arranged alphabetically on author's names and chronologically per author. Author name should be started with surname and initial letter with capital letter. There is no need to separate author's initials by full stop but it should be given in capital letters without gap. Each author name should be separated by comma (,) and last author name by ‘and’. A few examples of correct citation of references for Indian Journal of Weed Science are given below:

Singh Samunder, Punia SS, Yadav A and Hooda VS. 2011. Evaluation of carfentrazone-ethyl + metsulfuron-methyl against broadleaf weeds of wheat. Indian Journal of Weed Science 43(1&2): 12-22.

Neeser C and Varshney Jay G. 2001. Purple nutsedge; biology and principles for management without herbicides, Indian Journal of Pulses Research 14(1): 10-19.

Naseema A, Praveena R and Salim AM. 2004. Ecofriendly management of water hyacinth with a mycoherbicide and cashew nut shell liquid. Pakistan Journal of Weed Science Research 10(1&2): 93-100.

Arya DR, Kapoor RD and Dhirajpant. 2008. Herbicide tolerant crops: a boon to Indian agriculture, pp 23-31. In: Biennial Conference on Weed Management in Modern Agriculture: Emerging Challenges and Opportunities. (Eds. Sharma RS, Sushilkumar, Mishra JS, Barman KK and Sondhia Shobha), 27-28 February 2008, Patna. Indian Society of Weed Science, Jabalpur.

Anonymous. 2006. Long-term herbicide trial in transplanted lowland rice-rice cropping system, pp 62-68. In: Annual Progress Report, AICRP on Weed Control, Tamil Nadu Agricultural University, Coimbatore.

DWSR. 2010. Annual Report, 2010-11, pp 35-37. Directorate of Weed Science Research, Jabalpur.

Gopal B and Sharma KP. 1981. Water hyacinth (Eichhornia crassipes) the most troublesome weeds of the world. Hindasia Publisher, New Delhi, 129 p.

Sushilkumar, Sondhia S and Vishwakarma K. 2003. Role of insects in suppression of problematic alligator weed (Altemanthera philoxeroides) and testing of herbicides for its integrated management. Final Report of ICAR Adhoc Project, 39 p.

For Web references: the full URL should be given and the date when the reference was last accessed. e.g. http://www.faostat.fao.org (accessed 21 May 2019)

Length

Paper TypeMaximum Length (including tables and figures)
Research Article6000 words
Research note4000 words
Review8000 words
Mini-Review5000 words

Units, abbreviations and nomenclature

For physical units, unit names and symbols, the SI system should be employed. Biological names should be given according to the latest international nomenclature. Upon its first use in the title, abstract and text, the common name of a weed should be followed by the scientific name (genus, species and authority) in parentheses. If no common name exists in English, the scientific name should be used only. At the first mention of an herbicide or other chemical substance, give its generic name only. Trade names should not be used. Biological and zoological names, gene designations and gene symbols should be italicized. Yield data should be reported in kg/ha or t/ha. All such letters such as viz., et al., in situ, ex situ, Rabi, Kharif, i.e., etc. should be italicized.

Tables and figures

Tables and figures should be concise and limited to the necessary minimum. We encourage the authors to set tables and figures at the appropriate places in the article but if it is not possible, the same may be given separately. The title should fully describe the contents of the table and explain any symbol or abbreviations used in it. The standard abbreviations of the units of different parameters should be indicated in parentheses. Vertical lines should not be given in the tables and horizontal lines should be used to separate parameters and end of the table.

Figures may be preferred in place of table. In no case the same data should be presented by both tables and figures. While presenting data through line graphs, vertical bars, cylinders, pie charts etc, the same should be preferred with black lines or bars having different clear symbols and shades. The graphs chosen with colours reproduce poorly and should not be given unless it became necessary.

Some useful tips

Avoid numerals and abbreviations at the beginning of a sentence. Don't use superscript for per hectare, ton or meter (kg ha-1 or t ha-1) instead use kg/ha or g/m2, t/ha, mg/g, ml/l etc. Prefer to mention yield data in t/ha only. If it becomes necessary, give yield in kg/ha but not in quintal. Don't use lakh, crores or arabs in text, instead give such figures in million. Only standard abbreviations should be used and invariably be explained at first mention. Avoid use of self-made abbreviations like iso., buta., rizo., etc. Don't use first letter capital for names of plant protection chemicals but it should be used for trade names. Use of treatment symbols like T1 T2 T3 etc. should be avoided. All weights and measurements must be in SI or metric units. Use % after double digit figures, not per cent, for example 10% not 10 per cent. In a series of range of measurement, mention the units only at the end, e.g. 3,4,5 kg/ha instead of 3 kg/ha, 4 kg/ha and 5 kg/ha. Nutrient doses as well as concentration in soil and plant should be given in elemental form only, i.e. P and K should not be given as P2O5 K2O. A variety may be mentioned within single quotes in italic such as 'Pusa Basmai', 'Kufri Sinduri' etc. Statistical data should be given in LSD (P=0.05) instead CD (P=0.05).

Authors are requested to see the recent issue of the journal to prepare the manuscript as per the journal's format.

Manuscript submission

Manuscripts must conform to the journal style (see the latest issue). Correct language is the responsibility of the author. After having received a contribution, there will be a review process, before the Chief Editor makes the definitive decision upon the acceptance for publication. Referee's comments along with editors comments will be communicated to authors as scanned copy/soft copy through email. After revision, author should send back the copy of revised manuscripts to the Chief Editor, ISWS by e-mail only.

Editorial Board reserves the right to suitably modify, accept or reject the MS in view on the reviewer's advice.

We encourage submission of paper only by electronically via E-mail as one complete word document file. When preparing your file, please use only Times New Roman font for text (title 16, all heads 14 and text of 12 point, double spacing with 1.5" margin all the sides) and Symbol font for Greek letters to avoid inadvertent character substitutions.

All manuscripts should be submitted Online (http://www.isws.org.in/login_IJWS.aspx). For authors unable to submit their manuscript online

To see sample copy to prepare the manuscript, please Log on: http://www.isws.org.in/IJWSn/Journal.aspx

Peer Review Policy

All published articles in Indian Journal of Weed Science (IJWS) are subjected to rigorous peer review processes based on initial editor screening and anonymized refereeing by two referees. The ultimate purpose of peer review is to sustain the originality and quality of research work and filtration of poor quality and plagiarized articles. Peer review assures research quality.

Paper Publication Process –

  • Manuscripts are received online in the editorial office with the certificate that MS has not been sent for consideration in any other journals for consideration.
  • Manuscripts are checked by office for its style and pattern and for plagiarism. If plagiarism is more than 20%, it is not considered and sent back to author for revision and re-submission.
  • If MS is found fit at Editorial office in context to plagiarism and style and pattern, it is sent to Chief Editor for further processing.
  • If chief Editor find the MS suitable for consideration, he shall suggest two name of referees as reviewers either from editorial board or from other institutions of concern discipline for reviewing the MS.
  • Editorial Office shall send the MS for double blind review to the reviewers suggested by Chief Editor.
  • Comments of double -blind reviewers will be sent to corresponding author without disclosing the identity of the reviewers to address the comments and re-submission of MS.
  • In case, one reviewer rejects while other accept the MS, it is sent to third reviewer suggested by Chief Editor.
  • Revised MS is again sent to reviewers to see whether their comments are addressed suitably.
  • On agreeing by the reviewers, the MS is again sent to Chief Editors with comments of reviewers and reply of author to take the final decision.
  • The final decision of Chief Editor is communicated to authors.

Peer Review Policy

The practice of peer review is to ensure that only good science is published. It is an objective process at the heart of good scholarly publishing and is carried out by all reputable scientific journals. Our reviewers therefore play a vital role in maintaining the high standards of the (Indian Journal of Weed Science) Journal of Management and Research and all manuscripts are peer reviewed following the procedure outlined below.

Initial manuscript evaluation

The Editors first evaluate all manuscripts. In some circumstances it is entirely feasible for an exceptional manuscript to be accepted at this stage. Those rejected at this stage are insufficiently original, have serious scientific flaws, have poor grammar or English language, or are outside the aims and scope of the journal. Those that meet the minimum criteria are passed on to experts for review.

Authors of manuscripts rejected at this stage will be informed within 2 weeks of receipt.

Type of Peer Review

The (Indian Journal of Weed Science) employs double blind review, where the reviewer remains anonymous to the authors throughout the process.

How the reviewer is selected

Reviewers are matched to the paper according to their expertise. Our reviewer database contains reviewer contact details together with their subject areas of interest, and this is constantly being updated.

Reviewer reports

Reviewers are asked to evaluate whether the manuscript:

  • Is original
  • Is methodologically sound
  • Follows appropriate ethical guidelines
  • Has results which are clearly presented and support the conclusions
  • Correctly references previous relevant work

Reviewers are not expected to correct or copyedit manuscripts. Language correction is not part of the peer review process. Reviewers are requested to refrain from giving their personal opinion in the "Reviewer blind comments to Author" section of their review on whether or not the paper should be published. Personal opinions can be expressed in the "Reviewer confidential comments to Editor" section.

How long does the peer review process take?

Typically the manuscript will be reviewed within 2-8 weeks. Should the reviewers' reports contradict one another or a report is unnecessarily delayed a further expert opinion will be sought. Revised manuscripts are usually returned to the Editors within 3 weeks and the Editors may request further advice from the reviewers at this time. The Editors may request more than one revision of a manuscript.

Final report

A final decision to accept or reject the manuscript will be sent to the author along with any recommendations made by the reviewers, and may include verbatim comments by the reviewers.
Chief Editor's Decision is final
Reviewers advise the Editors, who are responsible for the final decision to accept or reject the article.

Special Issues / Conference Proceedings

Special issues and/or conference proceedings may have different peer review procedures involving, for example, Guest Editors, conference organizers or scientific committees. Authors contributing to these projects may receive full details of the peer review process on request from the editorial office.

Becoming a Reviewer for the (Indian Journal of Weed Science)

If you are not currently a reviewer for the (Indian Journal of Weed Science) but would like to be considered as a reviewer for this Journal, please contact the editorial office by e-mail at (editorisws@gmail.com), and provide your contact details. If your request is approved and you are added to the online reviewer database you will receive a confirmatory email, asking you to add details on your field of expertise, in the format of subject classifications.

Editorial Board

Editorial office:

Office Manager, Indian Society of Weed Science, ICAR-Directorate of Weed Research, Maharajpur, Jabalpur, India 482 004

Publisher Address:

Secretary, Indian Society of Weed Science, ICAR-Directorate of Weed Research, Maharajpur, Jabalpur, India 482 004

Principal Scientist
Division of Crop Research
ICAR Research Complex for Eastern Region
Bihar Veterinary College, Patna - 800014 (Bihar)

Chief Editor J.S. Mishra 9494240904 jsmishra31@gmail.com

The University of Queensland
St Lucia QLD 4069, Australia

Associate Editor Bhagirath Singh Chauhan b.chauhan@uq.edu.au

Consultant,
ICRISAT,
International Crops Research Institute for Semi-Arid Tropics
Patancheru, Hyderabad

Associate Editor A.N. Rao 9440372165 adusumilli.narayanarao@gmail.com

Editors

Professor,
Department of Agronomy, CCSHAU,
Hisar-125 004 (Haryana)

Ashok Kumar Yadav 9416995523 aky444@gmail.com

Professor & Head,
Division of Agronomy
FoA, Main Campus,
Chatha, SKUAST-Jammu (J&K)

B.C. Sharma 9419152428 drbhagwati@gmail.com

Principal
Vanavarayar Institute of Agriculture
Affiliated to TNAU)
Manakkadavu, Pollachi-642103 (Tamil Nadu)

C. Chinnusamy 9443721575 chinnusamyc@gmail.com

Scientist,
ICAR - Directorate of Weed Research,
Jabalpur (Madhya Padesh)

Dibakar Ghosh 8989190213 dghoshagro@gmail.com

Principal Scientist
Department of Agronomy,
Assam Agricultural University
Jorhat - 785013 (Assam)

I.C. Barua 9435094326 iswar_barua@yahoo.co.in

Principal Scientist
PJTSAU, Hyderabad-30 (Telangana)

M. Madhavi 9491021999 molluru_m@yahoo.com

Assistant Agronomist
Directorate of Agriculture (Govt. of WB)
Kolkata 700001, West Bengal

Malay Kumar Bhowmick 9434239688 bhowmick_malay@rediffmail.com

Associate Professor
(Soil Science & Agrl. Chemistry)
Anbil Dharmalingam Agricultural College & Research Institute (TNAU),
Trichy (Tamil Nadu)

P. Janaki 9443936160 janakibalamurugan@rediffmail.com

Assistant Chemist (Residue),
Department of Agronomy,
Punjab Agricultural University
Ludhina-141 004 (Punjab)

Pervinder Kaur 9646105418 pervi_7@yahoo.co.in

Sr. Agronomist, Directorate of Extension Education
Punjab Agricultural University
Ludhiana – 141004 (Punjab)

Simerjeet Kaur 9814081108 simer@pau.edu

College of Horticulture,
Vellanikkara. Thrissur – 680 656, (Kerala)

T. Girija 9447004940 girijavijai@gmail.com

Principal Scientist,
Directorate of Maize Research,
Pusa Campus, New Delhi-110012

C.M. Parihar 9013172214 pariharcm@gmail.com

Indexing Indexing & Abstracting Services


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Volume- 43 | Issue-3&4 (Jul-Dec) | Year 2011

Aquatic weeds problems and management in India
Sushilkumar
Review article | DOI: IJWS-2011-43-3&4-1 | Volume: 43 Page No:118-138 |
Address & Email | Article preview | View PFD | Download

Abstract:

Aquatic weeds are those unwanted vegetation which grow in water and hamper its use. Out of about 160 aquatic weeds, Eichhornia crrassipes, Ipomoea aquatica, Typha angustata, Ceratophyllum demersum, Salvinia molesta, Nelumbo nucifera, Alternanthera philoxeroides, Hydrilla verticillata, Vallisneria spiralis, Chara spp., Nitelia spp., Potamogeton spp. are of primary concern in India. Several irrigation and hydroelectric projects in the country like Nagarjuna Sagar project in Andhra Pradesh, Tungabhadra project in Karnataka and Kakki and Idikki reservoirs in Kerala are suffering with massive growth of  aquatic weeds. Weeds enhance rates of evaporation many folds through evapotranspiration than that of open surface, thus cause great loss of water. Water hyacinth makes water unfit due to eutrophication and slows down the flow rate of water besides causing many health associated problems. Aquatic weeds can be controlled by several methods like biological, chemical and physical. Each method has its benefits and drawbacks. There are several popular control mechanisms for preventing the spread or eradication of aquatic weeds. Physical methods are suitable only for small scale infestation but when applied in large water bodies become ineffective due to high cost and regrowth. Chemical control has been practiced against aquatic weeds since long time in India but it is not prevalent. Control of small infestations with herbicides has often been very effective, but is heavily dependent on skilled operators who maintain longterm vigilance for appearance of regrowth or seedlings. In recent decades, there has been a significant increase in the level of nutrients dumped into water from industrial and domestic sources as well as from land where fertilizers are used or where clearance has caused an increase in run-off. Successful attempts have been made to control water hyacinth and water fern by use of exotic weevil Neochetina spp. And Cyrtobagaus salvinae in different parts India but for several other aquatic weeds, suitable bioagents are not available. Some species of herbivorous fishes (Tilapia spp. and Ctenopharyndon idella) have been utilized to control some submerged weed especially Hydrilla spp. with varying degree of success. This paper describes the aquatic weed problems in India and the efforts made so far for their management by various methods.

Email

sknrcws@gmail.com

Address

Directorate of Weed Science Research, Maharajpur, Adhartal, Jabalpur (Madhya Pradesh)
Effects on production potential and economics of direct seeded rice sowing dates and weed management techniques
Devendra Mandal, D. Singh, Rakesh Kumar, Anupma Kumari and Vinod Kumar
Full length articles | DOI: IJWS-2011-43-3&4-2 | Volume: 43 Page No:139-144 |
Address & Email | Article preview | View PFD | Download

Abstract:

Plant height, tillers/m row length, leaf area index (LAI), crop growth rate (CGR), net assimilation rate (NAR) and dry matter accumulation in plants were significantly higher in plots getting weed free environment closely followed by pre-emergence application of butachlor 1.5 kg/ha fb 1 HW. However, yield attributes i.e. panicles/m2 and fertile grains/panicle and finally yield were significantly higher in weed free check with butachlor fb 1 HW closely on its heel. Among the nutrient concentration, it was only P in straw which was very marginally higher in weed free check and butachlor fb 1 HW. However, sowing date of 22nd June showed significantly higher N, P and K uptake by grain and straw. Weed population and weed dry matter were significantly higher in 12th July sown crop but least weed population, dry matter and good weed control efficiency were accounted with weed free check and butachlor fb 1 HW though the nutrient concentration were affected significantly both due to sowing date and weed management practices. Nutrient uptake due to weed was higher in 12th July sowing date. Amongst the weed management methods, the nutrient uptake of weeds were least in weed free check followed by butacholar fb 1 HW and Sesbania broadcast fb 2,4-D 0.5 kg/ha at 30 DAS. Similar results were also recorded in the case of gross return, net return and B :C ratio in case of 22nd June.

Email

rakeshpusa08@gmail.com

Address

Department of Agronomy, Rajendra Prasad Agricultural University, Pusa, Samastipur (Bihar)
Bio-efficacy of herbicides applied at the 2 to 4 leaf stage of weeds in sugarcane after second interculture
Rohitashav Singh, Radhey Shyam, Amit Bhatnagar, V. K. Singh and Jitendra Kumar
Full length articles | DOI: IJWS-2011-43-3&4-3 | Volume: 43 Page No:145-148 |
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Abstract:

A field experiment was conducted during 2006-2008 to find out suitable dose of velper K4 60 WP for the control of weeds in spring planted sugarcane. Weed population and weed dry weight were reduced significantly due to different weed control measures. Cane yield increased significantly with all the measures over weedy check and was highest under weed free conditions (94.3 t/ha) though it was at par with hoeing at 30, 60 and 90 day after transplanting (DAT). Atrazine was the most effective herbicide reducing weed population and weed dry weight followed by Velpar. Weed growth in weedy plot caused 73.5% reduction in cane yield compared to weed free condition. Among herbicidal treatments, maximum cane yield of 82.4 t/ha was obtained in atrazine and no herbicide treatment was at par with this. Due to phytotoxicity reason Velpar K 60 WP resulted in lower cane yield, though it effectively controlled the weeds.

Email

rohitash_1961@rediffmail.com

Address

Department of Agronomy, G.B. Pant University of Agriculture & Technology, Pantnagar (Uttarakhand)
Effect of different herbicides on weeds and lac yield in bhalia plantation
B.P. Singh, S. Ghosal and A.K. Singh
Full length articles | DOI: IJWS-2011-43-3&4-4 | Volume: 43 Page No:149-152 |
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Abstract:

Several herbicides were evaluated for their possibility of use in the lac production system under Flemingia semialata in the Research Farm of Indian Institute of Natural Resins and Gums, Ranchi. Among several herbicides evaluated, application of glyphosate at 1.0 kg/ha in Flemingia semialata (vernacularly called bhalia) plantation at 10 days prior to lac insect inoculation, resulted in significant reduction in weed density and dry weight with 88.6% weed control efficiency (WCE). Glyphosate was found safe to lac insect and superior to other tested herbicides and resulted in 38.8% higher sticklac yield over control. The weed free treatment (manual, weeding twice) recorded the highest sticklac yield (239.7 g/bush or 1918 kg/ha) but was uneconomical in comparison to herbicide treatments.

Email

soumen66iinrg@gmail.com

Address

Indian Institute of Natural Resins and Gums, Namkum, Ranchi (Jharkhand)
Optimizing the surfactant dose for sulfosulfuron and ready mix combination of sulfosulfuron and carfentrazone against weeds in wheat
R.S. Chhokar, R.K. Sharma and Subhash Chander
Full length articles | DOI: IJWS-2011-43-3&4-5 | Volume: 43 Page No:153-162 |
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Abstract:

Field and pot studies were conducted to determine the efficacy of sulfosulfuron and ready mixture, sulfosulfuron + carfentrazone- 45 (25+20) WDG at different surfactant doses against complex weed flora of wheat. The weed control, particularly the grass was significantly poor, when sulfosulfuron or its ready mix combination with carfentrazone was applied without surfactant compared with surfactant. The grass (Avena ludoviciana, Echinochoa crusgalli, Phalaris minor and Polypogon monspeliensis) weed control with sulfosulfuron or ready mixture (RM) of sulfosulfuron + carfentrazone- 45 WDG was similar at surfactant doses of 625, 750 and 1250 ml/ha indicating the possibility of reducing the surfactant doses by 40-50% from the present recommendation of 1250 ml/ha in India. The optimum dose of RM, sulfosulfuron + carfentrazone was 45 (25+20) g/ha with 625-750 ml/ha surfactant. This combination was superior over sulfosulfuron, due to the control of Rumex dentatus, thereby increased the wheat yield by 7.6% on an overall mean basis. The RM, sulfosulfuron + carfentrazone with surfactant was similar to ready mixtures, Total (sulfosulfuron 75 + metsulfuron 5)-80 WDG at 32 (30+2) g/ha and Atlantis (mesosulfuron + iodosulfuron) at 14.4 (12+ 2.4) g/ha in controlling weeds and producing wheat yield. The carry over effect of sulfosulfuron involving treatments (sulfosulfuron, sulfosulfuron + metsulfuron, sulfosulfuron + carfentrazone) was observed on succeeding maize (Zea mays L.) crop. At 2X dose of sulfosulfuron + carfentrazone (50+40 g/ha), the reduction in maize biomass was 62.6-73.0% in comparison to weed free check.

Email

rs_chhokar@yahoo.com

Address

Resource Management Unit, Directorate of Wheat Research, Karnal (Haryana)
Productivity and economics of rice-zero till maize as influenced by weed management practices in southern Telangana region of Andhra Pradesh
B. Mukundam, S. Srividya and V. Raja
Full length articles | DOI: IJWS-2011-43-3&4-6 | Volume: 43 Page No:163-168 |
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Abstract:

A field experiment was conducted on sandy clay loam soil of Andhra Pradesh during kharif and rabi seasonsics of rice-zero till maize cropping system. The results showed that the rejuvenation of rice stubbles in the sequence crop of rabi maize were more in early harvested than late harvested rice varieties and reverse was the trend in weed growth. Among herbicide treatments, use of paraquat as pre-emergence application for controlling rejuvenation of rice stubbles in zero-till maize was superior to pre-emergence application of atrazine and no-herbicide treatment. On the other hand pre-emergence application of atrazine was more effective in controlling first flush of weeds than paraquat and no-herbicide treatment. Herbicide treatments, consequent to termination of rice stubble and weed competition, promoted plant growth, dry matter production, nutrient uptake, yield structure and yield of maize and consequently productivity and economics of the system as compared to no-herbicide treatment. Rice-zero till maize irrespective of the herbicide supplementation gave higher rice equivalent yield, net returns and benefit of cost when compared to existing rice-pulse sequence. However, soil fertility status and microbial status of the rice-maize cropping system was no match to the existing system of rice-pulse sequence and herbicide treatments did not exhibit any detrimental effect on microbial population. of 2006-07 and 2007-08 on the effect of weed management practices on the productivity and economy.

Email

mukund_agro@yahoo.co.in

Address

AICRP on STCR, ARI, ANGRAU, Rajendranagar, Hyderabad (Andhra Pradesh)
Efficacy of imazethapyr on weed management in soybean
D.S. Meena, Baldev Ram, Chaman Jadon and J. P. Tetarwal
Full length articles | DOI: IJWS-2011-43-3&4-7 | Volume: 43 Page No:169-171 |
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Abstract:

The experiment was conducted to evaluate the efficacy of post emergence applications of imazethapyr on weed control and soybean yield. The field was infested with grassy weeds (51.6%), broad leaf weeds (34.1%) and sedges (13.2%). Application of imazethapyr XL 10% SL at 150 g/ha as post emergence significantly reduced the density of all grassy, broad leaf weeds sedges and their dry weight, and provided maximum number of branches/plant, pods/plant, seeds/pod and seed yield as compared to weedy check and imazethapyr 10% at 50 g/ha. Infestation of weeds throughout the growth period caused 57.2% reduction in seed yield of soybean. Maximum seed yield (1075 kg/ha) and weed control efficiency of grasses (86.9%), broad leaf (88.4%) and sedges (73.0%) was obtained with 2 hand weeding at 20 and 40 days after sowing closely followed by imazethapyr XL 10% at 150 g/ha (957 kg/ha). Application of imazethapyr XL 10% SL at 100 g/ha recorded significantly higher net return (Rs 14,237/ha) and B : C ratio (1.68) followed by imazethapyr XL 10% at 150 g/ha over weedy check and imazethapyr XL 10% at 50 g/ha.

Email

meenads1967@yahoo.co.in

Address

Agricultural Research Station, Maharana Pratap University of Agriculture & Technology, Ummedganj farm, Kota (Rajasthan)
Efficacy of pre and post emergence herbicides on weed flora of urd bean under rainfed subtropical Shiwalik foothills of Jammu & Kashmir
Brij Nandan, B.C Sharma, Anil Kumar and Vikas Sharma
Full length articles | DOI: IJWS-2011-43-3&4-8 | Volume: 43 Page No:172-174 |
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Abstract:

An experiment was conducted during rabi seasons of 2006 and 2007 at Pulses Research Sub-Station Samba, SKUAST-Jammu to study the efficacy of pre and post emergence herbicides in controlling weed flora of urd bean (Vigna mungo L.) under rainfed subtropical conditions of Jammu. The weed free treatment produced the highest seed yield and was at par with imazethapyr 250 ml/ha (post-emergence) after 15-20 days sowing. However, among the other treatments, pendimethalin (pre-emergence) 1.0 kg/ha fb 1 HW at 30 DAS was found superior in controlling the weed flora and increasing the seed yield. Unweeded check produced the lowest seed yield.

Email

anillau@gmail.com

Address

Division of Agronomy, Chatha, SKUAST-Jammu (Jammu & Kashmir)
Chemical weed control in transplanted rice in Hirakud command area of Orissa
A.K. Patra, J. Halder and M.M. Mishra
Full length articles | DOI: IJWS-2011-43-3&4-9 | Volume: 43 Page No:175-177 |
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Abstract:

A field experiment was conducted to evaluate the efficiency of herbicide mixture of almix (metasulfuron methyl + chlorimuron ethyl) and butachlor to control both grassy and broad leaved weeds. Application of almix 0.004 kg/ha mixed with butachlor 0.938 kg/ha at three days after transplanting (DAT) was at par with hand-weeding twice at 20 and 40 DAT in controlling weeds and higher grain yield. This application increased the grain yield by 45.1% over the unweeded check. There was a negative linear relationship between weed dry weight and grain yield.

Email

alokpatra@yahoo.co.in

Address

Regional Research & Technology Transfer Station, Orissa University of Agriculture & Technology, Chiplima (Orissa)
Isolation and pathogenicity of some native fungal pathogens for the biological management of water hyacinth
Aditi Pathak and C. Kannan
Full length articles | DOI: IJWS-2011-43-3&4-10 | Volume: 43 Page No:178-180 |
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Abstract:

Water hyacinth (Eichhornia crassipes) is one of the most predominant, persistent and troublesome aquatic weeds. Periodical surveys of various water bodies in and around Jabalpur were under taken with the objective to isolate and evaluate the indigenous strains of fungal pathogens as myco-herbicides to manage water hyacinth. Three fungal pathogens, viz., Fusarium oxysporum, Curvularia lunata and Alternaria alternata were isolated. Efficacy studies of the pathogens were done by inoculating water hyacinth plants, either directly or after creating wounds. Artificial injury created in the plants by pin pricks before inoculation of the pathogens aided in the entry of the pathogens there by resulting in the better infection of the plants. Among the three pathogens, Fusarium oxysporum was found to be the best resulting in the killing of inoculated water hyacinth in about 15 days.

Email

aditi.pathak10@gmail.com

Address

Directorate of Weed Science Research, Adhartal, Jabalpur (Madhya Pradesh)
Persistence of pendimethalin and oxyfluorfen at different temperature and moisture levels in an alfisol and vertisol
A. Sireesha, P.C. Rao, G. Swapna and Ch.S. Ramalakshmi
Full length articles | DOI: IJWS-2011-43-3&4-11 | Volume: 43 Page No:181-187 |
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Abstract:

Persistence of pendimethalin and oxyfluorfen in an alfisol and vertisol was studied at three moisture levels (at saturation, Field Capacity and 50 % Field Capacity) and at two temperature levels (10 2 C and 27+ 20C) for 137 days in the laboratory. Degradation of pendimethalin and oxyfluorfen was more rapid at high temperature and moisture levels. The disappearance curve / semi logarithmic plot followed first order kinetics with two distinct pathways, an initial faster rate followed by a slower and more gradual disappearance. Half life values for pendimethalin varied from 35.45 to 108.28 in alfisol and from 28.28 to 91.84 in vertisol ; for oxyfluorfen half life values varied from 97.60 to 192.50 in Alfisols and 90.05 to 147.44 in vertisols.

Email

sireesha_291@yahoo.co.in

Address

AICRP on weed control, ANGRAU, Hyderabad (Andhra Pradesh)
Screening for antipathogenicity of weeds
C. Sarathambal, Anjana Chourasiya and K.K. Barman
Full length articles | DOI: IJWS-2011-43-3&4-12 | Volume: 43 Page No:188-191 |
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Abstract:

A total of 11 weeds were collected and screened for their antimicrobial activity against plant and human pathogens. Antimicrobial compounds of weeds were extracted with three different solvent viz. methanol, chloroform and petroleum ether of varying polarity. The results revealed that the petroleum ether extract of Lucas aspera was most effective against the Fusarium oxysporum, Colletotricum falcatum and C. capsici. The methanol extract of Phyllanthus niruri was showing highest antimicrobial activity against the human pathogens such as Entrococcus coli, Bacillus subtilis, Bacillus licheniformis, Bacillus amylovorus. Similarly, chloroform extract of L. aspera recorded the highest inhibition zone against the Vibrio cholerae and Salmonella typhi. Among the 11 weeds, L. aspera and P. niruri were found having more antimicrobial activity against most of the selected plant and human pathogens.

Email

saratha6@gmail.com

Address

Directorate of Weed Science Research, Maharajpur, Adhartal, Jabalpur (Madhya Pradesh)
Efficacy of mechanical, cultural and chemical methods on weed suppression and yield of lentil
V.K. Singh, Vivek Dixit, Rohitashav Singh and Ashutosh Barthwal
Full length articles | DOI: IJWS-2011-43-3&4-13 | Volume: 43 Page No:192-194 |
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Abstract:

A field experiment was conducted during rabi season of 2007-08 and 2008-09 on the mollisols of Pantnagar (Uttrakhand). Twelve treatments consisted of two tillage practices (zero and conventional), two varieties (small seeded-Pant L-4 and bold seeded- Pant L-5) and three levels of weed management (weedy check, hand weeding, (HW) 30 DAS and pendimethalin 1 kg/ha as PRE) were set out in split plot design keeping tillage practices and variety in the main plot and weed management practices in sub plots with four replications. Results revealed that zero tillage recorded higher weeds density viz, Cyperus rotundus and total dry matter of weeds per unit area than that of conventional tillage. Weed density and dry weight remained unaffected under both the varieties. Hand weeding done at 30 DAS controlled the weeds more effectively than PRE application of pendimethalin 1 kg/ha. Conventional tillage out yielded zero tillage. Most of the yields attributing characters were higher in conventional tillage. Small seeded variety Pant L-4 gave significantly higher grain yield than that of bold seeded Pant L-5 during both the years. HW 30 DAS and PRE application of pendimethalin 1 kg/ha being on par produced significantly more grain yield of lentil than weedy check during the first year at 30 DAS out yielded remaining weed management practices.

Email

vksagro@gmail.com

Address

Dept. of Agronomy, G.B. Pant University of Agriculture and Technology, Pantnagar,U.S.Nagar (Uttatrakhand)
Bio-efficacy of clodinafop-propargyl + metsulfuron methyl against complex weed flora in wheat
Suresh Kumar, N.N. Angiras and S.S. Rana
Full length articles | DOI: IJWS-2011-43-3&4-14 | Volume: 43 Page No:195-198 |
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Abstract:

Clodinafop 60 g/ha and metsulfuron methyl 4 g/ha + surfactant 0.02% alone, combinations of clodinafop and metsulfuron + surfactant at the similar and double dose and isoproturon + 2, 4-D were evaluated against complex weed flora in wheat during 2007-08 and 2008-09. Phalaris minor, Avena ludoviciana and Lolium temulentum were the major grassy weeds. Vicia sp., Anagallis arvensis and Lathyrus aphaca were among the broad-leaved weeds found growing in association with wheat crop. All the herbicidal treatments significantly reduced the dry weight of weeds. Tank mixture of clodinafop 60 g/ha + metsulfuron 4 g/ha and clodinafop 120 g/ha + metsulfuron 8 g/ha with and without 0.2% surfactant provided excellent control of weeds and produced significantly higher grain yield of wheat. Weeds caused 55.7% reduction in wheat grain yield.

Email

skg_63@yahoo.com

Address

Department of Agronomy, Forages and Grassland Management, CSK HPKV, Palampur (Himachal Pradesh)
Persistence and dissipation of pretilachlor in soil, plant and water of coastal rice ecosystem
S. Dharumarajan, R. Sankar and S. Arun
Full length articles | DOI: IJWS-2011-43-3&4-15 | Volume: 43 Page No:199-202 |
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Abstract:

Field and laboratory experiments were conducted to study the persistence and dissipation of pretilachlor in soil, straw and flood water. In soil, pretilachlor at 0.75 kg/ha dissipated to below detectable level (BDL) within 30 days after application (DAA) when applied along with green leaf manure, while in other treatments viz., pretilachlor at 0.75, 1.5 kg/ha alone and gypsum + pretilachlor at 1.5 kg/ha persisted up to 45 DAA (DAA). In the case of plant, pretilachlor at 0.75 kg/ha dissipated to below detectable limit at 30 DAA, while 1.5 kg/ha persisted up to 60 DAA. Irrespective of the treatments, pretilachlor dissipated to below detectable limit at 10 DAA in flood water. The half-life of pretilachlor varied from 3.9-10.0, 3.4- 8.5, 0.87-1.52 days for soil, rice plant and flood water, respectively.

Email

sdharmag@gmail.com

Address

NBSS & LUP, Regional Centre, Kolkata (West Bengal)
Weed population, nitrogen removal by weeds and crop yield under maize + blackgram intercropping system in Chhattisgarh plains
Sanjay K. Dwivedi, G. K. Shrivastava, A. P. Singh and S.S. Kolhe
Full length articles | DOI: IJWS-2011-43-3&4-16 | Volume: 43 Page No:203-210 |
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Abstract:

The experiment consisted of five planting geometry viz., sole maize, sole blackgram, maize + blackgram (1:1), maize + blackgram (2:1) and maize + blackgram (2:2) and four weed management practices viz., weedy check, hand weeding (HW) at 30 DAS, alachlor 2.0 kg/ha as pre emergence (PRE) and alachlor 1.5 kg/ha as PRE + HW at 40 DAS. These treatments were evaluated under split plot design with three replications. At harvest of maize (105 DAS), weed population and nitrogen removals of all species of weeds were significantly highest under sole maize. However, the highest nitrogen removal by weeds was recorded under weedy check by all the weed species, while the lowest removal of nitrogen was in alachlor 1.5 kg/ha + HW at 40 DAS. Among the planting geometry, the grain yield, productivity rating index (PRE), production efficiency (PE) and weed control efficiency (WCE) were highest under maize + blackgram (2:1) for maize, however weed smothering efficiency of maize was highest under maize + blackgram (1:1). The same parameters were highest under sole blackgram. At harvest stages of blackgram (75 DAS) and maize (105 DAS), dry weight of weeds was lowest with the application of alachlor 1.5 kg/ha + HW at 40 DAS. This treatment produced maximum grain yield, PRI and PE of maize and blackgram, along with higher WCE.

Email

sanjay_dwivedi2000@yahoo.com

Address

Department of Agronomy, Indira Gandhi Krishi Vishwavidyalaya, Raipur (Chhattisgarh)
Biological based chemical integration for early control of water hyacinth
Sushilkumar
Full length articles | DOI: IJWS-2011-43-3&4-17 | Volume: 43 Page No:211-214 |
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Abstract:

Water hyacinth (Eichhornia crassipes) is the most gregariously growing aquatic weed of India. An attempt was made to control water hyacinth from a village pond of about one hectare through integration of herbicides and bio-agents. One thousand bioagent weevils of Neochetina spp. were released as initial inoculation in the pond over an area of 3000 m2 for further population build up. Three herbicides namely 2,4-D (1.5 and 2.0 kg/ha), glyphosate (2.0 and 2.5 kg/ha) and paraquat (0.7 and 1.0 kg/ha) were applied in adjoining area after 15 days of bioagent inoculation in an area of 10 x30 m2 in three replicates for each dose. Population samples of water hyacinth and bioagent were taken after spray and release, respectively. On appearing new growth of water hyacinth in treated area, 15% of the total pond was again sprayed with the herbicides after 6 months. 2,4-D (2.0 kg/ha) proved the best herbicide to control water hyacinth (98.20%) followed by glyphosate 2.5 kg/ha (95.85 %) and paraquat 1.0 kg/ha (93.48 %). After initial control, highest regrowth was recorded in paraquat treated replications followed by 2,4-D and glyphosate. Population sampling of bioagants revealed spread and increase in number of the weevil in the entire pond. Bioagents also invaded re-growth rapidly resulted after herbicide spray. Neochetina spp. Adult population was found increased in the adjoining area treated with herbicides. After 9 months of biological and chemical integration, the first cycle of complete control was achieved. This early collapse of weed within a period of 9 month could be possible due to integration of herbicide and bioagents which would otherwise have taken minimum 24-36 month by the bioagents alone. After some time, again water hyacienth population increased due to new germination from buried seeds or from the left stolons of water hyacinth. This second wave of water hyacinth was again collapsed in 21 months due to integration of one spray of herbicides after one month of regrowth.

Email

sknrcws@gmail.com

Address

Directorate of Weed Science Research, Maharajpur, Adhartal, Jabalpur (Madhya Pradesh)
Chemical weed control in wheat through on form demonstrations in Rewa district of Madhya Pradesh
R.K. Tiwari, I.M. Khan, Nirmala Singh and Amit Jha
Full length articles | DOI: IJWS-2011-43-3&4-18 | Volume: 43 Page No:215-216 |
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Abstract:

A field experiment under on farm trials programme of KVK, was conducted in farmers field during rabi 2005-06 and 2006-07 on wheat (Tricitum aestivum L.) crop cv. GW-273 to evaluate the efficiency of two herbicide 2,4-D and isoproturon and their tank mixture. Phalaris minor among the monocot weeds and Lathyrus aphaca among dicot were the major weeds in the demonstration fields, Post emergence application of 2,4-D 0.75 kg/ha + isoproturon 1.0 kg/ha at 25-30 days after sowing (DAS) gave maximum grain yield (3646 kg/ha) followed by the alone application of isoproturon 1.0 kg/ha at 25-30 DAS with gain yield (3222 kg/ha) and 2, 4-D 0.75 kg/ha at 25-30 DAS (2910 kg/ha). The application of 2,4-D + isoproturon increased the grain yield by 35.4% over control and 19% and 26.8% over individual application of 2,4-D and isoproturon, respectively. The application of 2,4-D + isoproturon also resulted higher weed control efficiency (80.4%).

Email

amitagcrewa@rediffmail.com

Address

JNKVV, College of Agriculture, Rewa (Madhya Pradesh)
Effect of different weed management practices on weed density and weed dry matter production in system of rice intensification (SRI)
Devendra Dewangan, A.P. Singh, H. Nirala and M. Verma
Short communications | DOI: IJWS-2011-43-3&4-19 | Volume: 43 Page No:217-221 |
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Abstract:

The twelve different weed management practices were laid out in randomized block design with three replications. Rice variety “MTU-1010” was grown as a test crop. Rice was transplanted with a spacing of 20 x 20 cm and fertilized with 90, 60 and 40 kg/N, P and K/ha, respectively. At later period of growth, maximum panicle length, number of seeds/panicle, WCE, weed density, dry matter accumulation under post-emergence fb post-emergence application of fenoxaprop-p-ethy (60 g/ha) + ethoxysulfuron (15 g/ha) favoured significant enhancement in seed yield which was at par with hand weeding. Application of postemergence fb post-emergence application of fenoxaprop-p-ethyl (60 g/ha) + ethoxysulfuron (15 g/ha) gave higher net return (Rs 3,4249.72/ha) and benefit: cost ratio (1.72)

Email

devendewangan@gmail.com

Address

Department of Agronomy, IGKV, Raipur (Chhattisgarh)
Occurrence of soil microbes under Parthenium weed in Tamil Nadu
C. Jeyalakshmi, Sabitha Doraisamy and V. Valluvaparidasan
Short communications | DOI: IJWS-2011-43-3&4-20 | Volume: 43 Page No:222-223 |
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Abstract:

A total of 13 microorganisms viz., Aspergillus niger, A. flavus, A. fumigatus, Chaetomium globosum, Corynespora cassicola, Curvularia lunata, Curvularia sp., Eurotium chavelari, Fusarium oxysporum, F. moniliforme, Monilia sp. Rhizopus stolonifer and Trichoderma harzianum was isolated from the Parthenium infested soils of Tamil Nadu with various degree of distribution. Among them, A. niger and R. stolonifer had 100% distribution followed by A. flavus, T. harzianum, C. lunata and F. moniliforme.

Email

csjayal@yahoo.co.in

Address

Department of Plant Pathology, J.N. College of Agriculture & Research Institute, Karaikal (Puducherry)
Lead and manganese accumulation by weeds at heavy metal contaminated sites in Jabalpur
P. J. Khankhane and Jay G. Varshney
Short communications | DOI: IJWS-2011-43-3&4-21 | Volume: 43 Page No:224-225 |
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Abstract:

An investigation was carried out to identify the ability of locally available weeds for metal removal at polluted soils along various roads in Jabalpur and adjoining areas. It was found that among weed species, the highest lead and manganese accumulation ratio was observed in Vetiveria zizinoides (17.9, 6.38), Arundo donax (12.5, 6.06) Calotropis procera (5.35, 3.03) and S. indicus (2.73, 4.69). Thus, having higher metal extraction ability, weeds such as V. zizinoides and A. donax can be applied for phytoremediation of lead and manganes contaminated sites.

Email

pjkhankhane@yahoo.com.ph

Address

Directorate of Weed Science Research, Maharajpur, Jabalpur (Madhya Pradesh)
Weed management in okra grown in kharif season under middle Gujarat conditions
Shweta Sharma and B.D. Patel
Short communications | DOI: IJWS-2011-43-3&4-22 | Volume: 43 Page No:226-227 |
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Abstract:

In experimental field, weed species Eleusine indica (87/m2) was the most dominant weed, while Digitaria sanguinialis was second in order (84/m2 ) followed by Dactyloctenium aegyptium, Phyllanthus niruri. Boerhavia repanda, Digera arvensis, Cyperus iria and Cyperus rotundus. Significantly higher number of fruit yield was recorded in pre-emergence application of pendimethalin 1000 g/ha ƒb hand weeding at 30 DAS which was at par with interculturing + hand weeding carried out at 30 and 60 DAS and post-emergence application of quizalofop-ethyl 75g/ha ƒb hand weeding at 30 DAS.

Email

shweta.aauanand.gmail.com

Address

B.A. College of Agriculture, Anand Agricultural University, Anand (Gujarat)
Critical period of crop-weed competition in zero-till cotton
P. Ayyadurai and R. Poonguzhalan
Short communications | DOI: IJWS-2011-43-3&4-23 | Volume: 43 Page No:228-230 |
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Abstract:

A field study was carried out to determine the critical period of crop weed competition in cotton (Gossypium hirsutum. L.) during the summer season (Febuary to July) of 2007. Twelve treatments consisting of weed free and weedy periods at 20, 40, 60, 80 and 100 DAS and at harvest along with a weedy and weed free check were arranged in randomized block design with three replications. The predominant weed species in the experimental field were Echinochola colona, Leptochloa chinensis, Cyperus rotundus, Trianthema portulacastrum, Rotala densiflora, Eclipta alba and Phyllanthus maderaspatensis. Seed cotton yield loss increased in the duration of competition and maximum loss (96.5%) occurred due to full season competition. Seed cotton yield increased significantly with the increase in initial duration of weed free condition upto 80 DAS. Beyond 80 DAS, seed cotton yield was reduced considerably due to lower boll setting percentage. Critical period of weed competition was found to be 20 to 60 days after sowing

Email

ayyaagridurai@yahoo.co.in

Address

Department of Agronomy, PJN College of Agriculture and Research Institute, Karikal (Tamil Nadu)
Effect of aqueous leaf extract of Parthenium on seed germination and seedling emergence of some cultivated crops
J.A. Dhole, S. S. Bodke and N.A. Dhole
Short communications | DOI: IJWS-2011-43-3&4-24 | Volume: 43 Page No:231-232 |
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Abstract:

Allelopathic effect of aqueous extract of Parthenium hysterophorus (L). were studied on seed germination and seedling emergence of some cultivated crops like Triticum aesticum (L)., Zea mays (L), Sorghum vulgare Pers., Gossipium hirsutum (L) and Glycine max (L). Seed germination of Z. mays was completely inhibited at 2% leaf extract of P. hysterophous and of T. aesticum. It gradually reduced the seed germination up to concentration of 10% while in Sorghum vulgare, it was inhibited at 6%. At 4% aqueous extract, the maximum inhibition occurred in Glycine max and G. hirsutum. The aqueous extract of Parthenium showed strong inhibitory effect on the growth of root and shoot development of crops except T. aesticum.

Email

jyotidhole.2008@rediffmail.com

Address

Department of Botany, Yeshwant Mahavidyalaya, Nanded (Maharashtra)
Nutrient depletion by weeds, yield and economics of drum seeded rice influenced by weed management
S.P. Sangeetha, A. Balakrishnan, R. Sathya Priya and J. Maheswari
Short communications | DOI: IJWS-2011-43-3&4-25 | Volume: 43 Page No:233-235 |
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Abstract:

Study revealed that drum seeding + green manure method of seedling establishment and pre-emergence application of pretilachlor + safener at the rate of 0.45 kg/ha on 5 days after sowing (DAS) fb hand weeding (HW) at 45 DAS registered lowest weed density, weed biomass, highest weed control efficiency (WCE), zero per cent weed index (WI), lowest depletion of NPK nutrient by weeds and highest grain yield of crop and B: C ratio

Email

sangeetha.agr@gmail.com

Address

Department of Agronomy, Tamil Nadu Agricultural University, Coimbatore (Tamil Nadu)
Effect of rice straw incorporation on weed management and crop growth in rice
Pratibha Singh and S.K. Guru
Short communications | DOI: IJWS-2011-43-3&4-26 | Volume: 43 Page No:236-238 |
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Abstract:

Among the treatments, weedy and butachlor plots had higher population of weeds. Weed population was lower at all the doses of rice straw incorporated with the lowest in 500 g/m2 rice straw treatment. Data on weed dry weight recorded at 60 DAT revealed a significant decrease in all the plots where rice straw was incorporated as compared to weedy and butachlor treated plots. Grain yield was also higher at all the doses of rice straw incorporation while it was lowest (2658 kg/ha) in the weedy treatment (Table 3). Highest grain yield (3,925 kg/ha) was obtained, irrespective of cultivars, in the treatment with the highest rice straw incorporation (500 g/m2). A total of 17 compounds were recorded in the straw. Among these, four compounds could be identified after comparing with phenolic standards. These were gallic acid, phydroxy benzoic acid, ferulic acid and vanillic acid.

Email

skguru123@yahoo.com

Address

Department of Plant Physiology, College of Basic Science and Humanities, G.B. Pant University of Agriculture and Technology, Pantnagar (Uttarakhand)
Effect of weed control treatments on growth of little seed cannary grass and productivity of wheat
R.K. Tiwari, B.S. Dwivedi, G. Deshmukh, A.K. Pandey and Amit Jha
Short communications | DOI: IJWS-2011-43-3&4-27 | Volume: 43 Page No:239-240 |
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Abstract:

The experiment was conducted in the fields of 10 farmers as 'On farm trial' in adopted villages of Krishi Vigyan Kendra (KVK), Rewa. Population and dry matter accumulation of Phalaris minor were significantly reduced with post emergence application of sulfosulfuron (25 g/ha), mesosulfuron+ iodosulfuron (12+2.4 g/ha) and pinoxaden (50 g/ha) when compared with unweeded control during both the years of investigations. Significantly more grain yield was recorded in all herbicidal treatments as compared to unweeded control.

Email

rktkvkrewa@rediffmail.com

Address

JNKVV College of Agricultural, Rewa
Chemical and cultural methods for weed control of mung bean under limited moisture conditions of Kandi belt of Jammu
Brij Nandan, Anil Kumar, B.C. Sharma and Neetu Sharma
Short communications | DOI: IJWS-2011-43-3&4-28 | Volume: 43 Page No:241-242 |
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Abstract:

An experiment was conducted during kharif season of 2006 and 2007 in Jammu to study the efficacy of pre and post emergence herbicides for controlling weeds of mung bean under limited moisture conditions of Kandi belt of Jammu. Hand weeding twice at 20 and 40 DAS produced the highest average seed yield (697.8kg/ha) which was at par with metolachlor (PE, 0.75kg/ha fb one hand weeding at 20 DAS) (691.6kg/ha). Among the other herbicidal treatments, pendimethalin (PE 1.0 kg/ha fb 1HW at 30 DAS) was superior in controlling weeds and increasing the seed yield.

Email

anillau@gmail.com

Address

Division of Agronomy, FOA-Chatha, SKUAST-Jammu (Jammu and Kashmir)
Impact of weeders for weed management in system of rice intensification (SRI)
Ghanshyam Deshmukh and R.K. Tiwari
Short communications | DOI: IJWS-2011-43-3&4-29 | Volume: 43 Page No:243-244 |
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Abstract:

The study was undertaken in Shahdol District of Madhya Pradesh to determine the impact of different types of weeder in SRI. Twenty SRI trained farmers, were selected for practicing SRI trained before Jawahar paddy plant marker for line marking at equi-distance among plant to plant and row to row in the grids of 25 x 25 cms and cono weeder, rotary weeder and twin wheel hoe for weeding. It was observed that average productivity was 555 kg/ha as compared to farmers practice 275 kg/ha. Cono weeder and rotary weeder were found suitable for weeding in wet condition and twin wheel hoe in dry condition of SRI fields.

Email

gshyam1234@rediffmail.com

Address

College of Agriculture, Rewa (Madhya Pradesh)

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