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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- 47 | Issue-2 (Apr-Jun) | Year 2015

Bio-efficacy of different herbicides for weed control in direct-seeded rice
Simerjeet Kaur* and Surjit Singh
Full length articles | DOI: | Volume: 47 Page No:106-109 |
Address & Email | Article preview | View PFD | Download

Abstract:

Field experiment was conducted during Kharif 2009 and 2010 to study the bio-efficacy of different herbicides in direct-seeded rice. Weed control treatments comprised of pendimethalin 0.75 kg, butachlor 1.50 kg, thiobencarb 1.50 kg, anilofos 0.375 kg, pretilachlor 0.75 kg, oxadiargyl 0.09 kg and pyrazosulfuron ethyl 0.015 kg/ha as pre-emergence and with sequential application of bispyribac 0.025 kg/ha at 30 DAS; two hand weedings and unweeded control. Significantly lower number of grass weeds was observed with application of pendimethalin as compared with other pre-emergence herbicides. Sequential application of pendimethalin and bispyribac recorded the lowest weed biomass and 100% weed control efficiency. Crop dry matter accumulation, number of tillers, and effective tillers were significantly higher in sequential use of pre- and post-emergence herbicides, resulting in more grain yield and net returns. The maximum grain yield was recorded in two hand weedings, which was at par with follow-up application of bispyribac after pendimethalin, butachlor, thiobencarb and oxadiargyl.

Email

simer@pau.edu

Address

Department of Agronomy, Punjab Agricultural University, Ludhiana, Punjab 141 004
Management of weeds in direct-seeded rice
N.V. Kashid*, K.K. Barhate and P.S. Bodake
Full length articles | DOI: | Volume: 47 Page No:110-112 |
Address & Email | Article preview | View PFD | Download

Abstract:

A field experiment was conducted during the Kharif season of  2012 to 2014 for three years at Agricultural Research Station, Vadgaon Maval, Pune, Maharashtra to find out the efficacy of different chemical and mechanical weed control methods and its economics in direct-seeded rice. From the pooled data it was observed that the pre-emergence application of oxyfluorfen 0.150 kg/ha and post-emergence application metsulfuron-methyl + chlorimuron-ethyl 0.004 kg/ha as weed control measure in direct-seeded rice gave the highest net returns (` 57,063/ha) with higher B:C ratio (2.3) having lower weed index (2.96) and higher weed control efficiency (91.08 %).

Email

kashidnv@gmail.com

Address

Agricultural Research Station, Vadgaon Maval, Pune, Maharashtra 410 507
Crop establishment, fertility and weed management practices in scented hybrid rice
Sunil Kumar, K.K. Sinha1 and D. Singh*
Full length articles | DOI: | Volume: 47 Page No:113-116 |
Address & Email | Article preview | View PFD | Download

Abstract:

An experiment was conducted during two consecutive rainy seasons at Rajendra Agricultural University, Pusa to study the effect of establishment method, fertility levels and weed management practices on scented hybrid rice. Two crop establishment methods (standard method of transplanting and SRI method of transplanting), three fertilizer levels (80:40:20, 100:60:40, 120:80:60 N, P2O5, K2O kg/ ha) and three weed management practices (weedy check, one hand weeding (HW) at 35 days after transplanting (DAT) and pre-emergence application of pendimethaline at 1 kg/ha were tested in a randomized block design. SRI method of transplanting recorded higher grain yield than the standard method of transplanting. The yield increased with the increase in fertility levels and was maximum with 120:80:60 kg/ha N, P2O5 and K2O/ha. One hand weeding registered higher grain and straw yields. Weed control efficiency was better with one hand weeding at 35 DAT in comparison to pre–emergence application of pendimethalin at 1 kg/ha.

Email

devendrasingh_aicrpweed@yahoo.co.in

Address

Rice Research Sub-Station, Jhanjharpur, Madhubani, Bihar 847 403
Weed control in forage oat through conservation agriculture
Birendra Kumar*, S. Karmakar, D.K. Choudhary and P. Mahapatra
Full length articles | DOI: | Volume: 47 Page No:117-120 |
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Abstract:

A field experiment was conducted during Rabi season of two consecutive years of 2010-11 and 2011-12 to evaluate the efficacy of different tillage practices in combination with various nutrient levels on productivity and quality along with weed control efficiency in forage oat under plateau region of Jharkhand. Variation in tillage and nutrient level significantly influenced the infestation of crop associated weeds, leaf area index, green forage yield, uptakes of calcium as well as, iron and contents of crude protein as well as crude fiber of forage oat. Population density of narrow, broad-leaved weeds and sedges and its biomass under zero tillage were lesser than conventional and minimal tillage. Application of biofertilizers with 75% recommended dose of fertilizer (RDF) remained at par with 100% RDF. However, maximum forage yield with improved quality was recorded under 125% RDF. Zero tillage practiced in forage oat was equally effective as conventional tillage with regards to productivity and quality of forage oat.

Email

kbirendra1973@gmail.com

Address

Department of Agronomy, Birsa Agricultural University, Kanke, Ranchi, Jharkhand 834 006
Bio-efficacy of ready-mix formulation of clodinafop-propargyl + metsulfuron for control of mixed weed flora in wheat
Tarundeep Kaur*, M.S. Bhullar and U.S. Walia
Full length articles | DOI: | Volume: 47 Page No:121-124 |
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Abstract:

Field efficacy of ready mix formulation of clodinafop-propargyl + metsulfuron-methyl was evaluated against mixed weed flora in wheat during winter seasons of 2010-11 and 2011-12 at Punjab Agricultural University, Ludhiana. The results indicated that ready-mix of clodinafop+ metsulfuron at 75 g/ha + 0.2% surfactant recorded effective control of grass and broadleaf weeds and recorded similar wheat grain yield to sequential application of clodinafop 60 g/ha and metsulfuron 4 g/ha and weed free without any phytotoxicity symptoms on the crop.

Email

tarundhaliwal@pau.edu

Address

Department of Agronomy, Punjab Agricultural University, Ludhiana, Punjab 141004
Herbicide and nitrogen application effects on weeds and yield of wheat
Mahendra Singh*, M.K. Singh, S.P. Singh and Raghuvar Sahu
Full length articles | DOI: | Volume: 47 Page No:125-130 |
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Abstract:

A field experiments was conducted during winter seasons of 2010-12 at Banaras Hindu University, Varanasi to study the effect of herbicides, nitrogen rates and it’s scheduling on associated weeds, crop growth and yield of wheat. Six weed species were common infesting wheat fields were Phalaris minor, Cynodon dactylon, Chenopodium album, Oxalis purpurea, Anagallis arvensis and Cyperus rotundus. Among the herbicidal treatments, post-emergence application (30 DAS) of sulfosulfuron + metsulfuron [32 g/ha] with higher rates 160 kg N/ha and time of application (50% basal + 25% CRI + 25% flowering) performed significantly with respect to reduction in density and biomass of weeds; increased the LAI and SPAD value ultimately enhanced the production of grain yield of wheat. Scheduling of nitrogen (50% basal + 25% CRI + 25% flowering) enhanced the nitrogen uptake efficiency and total nutrient uptake by crop than other scheduling of nitrogen. However, application of herbicide mixtures as a postemergence (30 DAS) with increased dose of nitrogen applied as 1/2 basal and topdressing 1/4 at CRI and 1/4 at flowering is most effective.

Email

mahendraagro@gmail.com

Address

Department of Agronomy, Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh 221 005
Allelopathic potential of canola and sugarbeet to control weeds in chickpea
Alireza Dadkhah* and Gh. Rassam
Full length articles | DOI: | Volume: 47 Page No:131-135 |
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Abstract:

Filed experiment was done to evaluate the allelopathic potential of sugarbeet and canola residues on weeds of chickpea field. Five treatments, viz. 1: Chopped residues of canola, 2: Chopped residues of sugarbeet both were separately incorporated to 25 cm depth soil, 20 days before sowing, 3: Shoot aqueous extract of canola, 4: Shoot aqueous extract of sugarbeet which were separately sprayed at post emergence stage and 5: Without any residues and spraying as control. The weed control treatments reduced the total weed cover, weed density and total dry weigh of weed. The reduction in weed density with canola and sugarbeet residues incorporated with soil were up to 42.7 and 57% respectively, at 45 days after sowing and 41% and 52.4%, respectively, at 90 days after sowing, compared to control. However, post emergence spraying of shoot aqueous extract of canola and sugarbeet, suppressed weed density up to 37.2 and 35.6% at 40 days after sowing and 56.7% and 49.2% at 90 days after sowing respectively, compared to control. Weed control treatments reduced weed cover (%), weed biomass and weeds stem length. Incorporation of canola and sugarbeet residues in soil reduced weed cover (%) by 47.9% and 57.6%, respectively, while spraying of shoot water extract of canola and sugarbeet suppressed weed cover (%) by 31.7% and 42%, respectively at 90 days after sowing. Application of canola residues and spraying shoot aqueous extract of canola increased chickpea yield by 25.4% and 39.5% respectively, while application of sugarbeet residues and shoot aqueous extract of sugarbeet decreased chickpea yield by 22% and 29.8% respectively compared to control. All nutrient elements analyzed in the leaves of weed generally were lower than control for all treatments. Incorporation of crop residue of canola and sugarbeet on weeds were more effective than spraying water extract of these plants.

Email

dadkhah@um.ac.ir

Address

Complex Higher Education of Shirvan, Ferdowsi University of Mashhad, Iran
Weed management effects on yield and economics of blackgram
K.S. Yadav, J.P. Dixit and B.L. Prajapati*
Full length articles | DOI: | Volume: 47 Page No:136-138 |
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Abstract:

A field experiment was conducted during the Kharif season of 2012 and 2013 to evaluate the effect of weed management practices on weed dry weight, yield attributes, yield and economics of blackgram (Vigna mungo L.). All the weed species were controlled effectively by pre-mix herbicides as compared to alone application of pendimethalin as pre-emergance and imazethapyr as post-emergence. The reduction in total dry weight of weeds (6.13g/m2) and maximum weed control efficiency 95.74% was found significantly higher with weed free treatment over all the weed control treatments except pre-mix herbicide imazethapyr + imazamox at 0.05 kg/ha PoE having 12.20g/m2 weed dry weight and 91.53% weed control efficiency at 60 DAS stage of crop growth. The significantly higher seed (0.89 t/ha) and straw (2.91 t/ha) yield was recorded in weed free plot over all the treatments, which was followed by imazethapyr + imazamox (pre-mix) at 0.05 kg/ha as (0.84 and 2.89 t/ha) and pendimethalin + imazethapyr (pre-mix) at 1.0 kg/ha (0.80 and 2.82 t/ha) treatments. However, the maximum net return of ` 17,135/ha and benefit:cost ratio (2.35) was found with imazethapyr + imazamox (pre-mix) at 0.05 kg/ha followed by pendimethalin + imazethapyr (pre-mix) at 1.0 kg/ha (` 16,410 and 2.30) treatment.

Email

bl_rewa@rediffmail.com

Address

College of Agriculture, Rajmata Vijayaraje Scindia Krishi Vishwa Vidyalaya, Gwalior, Madhya Pradesh 474 002
Weed and fertility management effects on grain yield and economics of finger millet following groundnut
G.N. Dhanapal*, M.T. Sanjay, G.R. Hareesh and Vinay B. Patil
Full length articles | DOI: | Volume: 47 Page No:139-143 |
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Abstract:

The field experiment was conducted during Kharif 2010 with finger millet Hebbal, Bengaluru. The finger millet crop was grown followed by groundnut during summer and continued up to 2014. The pooled data of five years of finger millet crop from 2010 to 2014 during Kharif indicated that application of butachlor at 0.75 kg/ha more or less gave similar grain yield (3.12 t/ha) to hand weeding twice (3.52 t/ha) due to good control of weeds. Continuous application of alachlor 1.0 kg /ha in groundnut and 2,4-D sodium salt 0.75 kg/ha in finger millet paved way for dominance of grasses particularly Digitaria marginata, Dactyloctenium aegyptium and Echinochloa colona, whereas pendimethalin treated plots showed higher emergence of Commelina benghalensis. A saving in weeding cost to an extent of ` 6,810 to ` 6,980/ha in finger millet was realized by using herbicides as compared to hand weeding. None of the herbicides affected the establishment, growth and yield of succeeding crops over the past five years, in spite of herbicides being applied continuously on the same piece of land.

Email

dhanapalgn@yahoo.com

Address

Main Research Station, University of Agricultural Sciences, Hebbal, Bengaluru, Karnataka 560 024
Nutrient uptake by weeds and pea as influenced by phosphorus and weed management
Sandeep Kumar Tehria, S.S. Rana, Suresh Kumar* and Ramesh
Full length articles | DOI: | Volume: 47 Page No:144-149 |
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Abstract:

Three P2O5 levels, viz. 0, 30 and 60 kg/ha were evaluated under six weed management practices, viz. weedy check, pendimethalin followed by (fb) hand weeding (HW), stale seedbed (SSB), SSB + pendimethalin fb HW, raised stale seedbed (RSSB) and RSSB + pendimethalin fb HW in pea during Rabi 2006-07 and 2007-08 on a silty clay loam soil at Palampur. Phalaris minor, Vicia sp. and Polygonum alatum were the major weeds found growing in association with peas. Stale seedbed and raised stale seedbed were significantly superior to weedy check in reducing total weed dry weight, weed growth rate, NPK depletion by weeds and increasing crop dry matter, crop growth rate (CGR), relative growth rate (RGR), NPK uptake by crop and subsequent radish yield. Superimposition of pendimethalin + hand weeding further improved the effectiveness of stale seedbed and raised stale seedbed in reducing total growth rate of weeds and NPK depletion by weeds and increasing crop dry matter, CGR, RGR, NPK uptake by crop and subsequent radish yield. Weeds in weedy check removed 39.3 and 53.6 kg N/ha, 16.5 and 16.6 kg P/ha and 24.1 and 27.4 kg K/ha during the first and second year, respectively. All weed control methods being at par resulted in significantly higher available P content after pea harvest. Weed dry weight and growth rate of weeds, NPK uptake by green pods and straw of pea, nodules/plant, available soil N and P after harvest of pea and subsequent radish yield increased with increase in the rate of P. NPK depletion by weeds, crop dry weight, CGR and RGR increased upto 30 kg P2O5/ha.

Email

skg_63@yahoo.com

Address

Department of Agronomy, CSK HP Krishi Vishvavidyalaya, Palampur, Himachal Pradesh 176 062
Integrated weed management in summer sesame
R.K. Mathukia*, B.K. Sagarka and C.N. Jadav
Full length articles | DOI: | Volume: 47 Page No:150-152 |
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Abstract:

A field experiment was conducted during 2010 to 2012 at Junagadh (Gujarat) to study the integrated weed management in sesame. Pendimethalin as pre-emergence, while imazethapyr and quizalofop-ethyl as postemergence were tested alone and in integration with hand weeding and interculturing. The quizalofopethyl 40 g/ha as post-emergence (20-25 DAS) + HW and IC (45 DAS) and pendimethalin 450 g/ha as preemergence + HW and IC (30 DAS) were found equally effective to the weed free check in controlling weeds and improving growth and yield attributes and ultimately seed yield (1.21 and 1.16 t/ha) and stalk yield (2.01 and 1.85 t/ha) of sesame. These treatments also recorded higher net returns (` 44,066 and 42,242/ha) and B:C ratio (3.58 and 3.54), therefore, these integrated weed management practices could become effective and economical under south Saurashtra agro-climatic conditions of Gujarat.

Email

rkmathukia@jau.in

Address

Department of Agronomy, Junagadh Agricultural University, Junagadh, Gujarat 362 001
Post-emergence herbicides on weeds and productivity of garden pea under mid-hill conditions of Himalaya
M.C. Rana*, Manu Nag, S.S. Rana and G.D. Sharma
Full length articles | DOI: | Volume: 47 Page No:153-157 |
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Abstract:

To standardize dose and time of application of post-emergence herbicides in garden pea (Pisum sativum var. hortense) under mid-hills of Himalaya, eleven treatments, viz. imazethapyr 100 and 150 g/ha at 20 and 40 DAS, quizalofop 25 and 37.5 g/ha at 20 DAS, isoproturon 1.0 and 1.25 kg/ha at 40 DAS, pendimethalin 1.5 kg/ha (pre-emergence), hand weeding twice (30 and 60 DAS) and unweeded check were tested during the winter (Rabi) season of 2005-06 and 2006-07 at Palampur. The major weed flora was constituted of Phalaris minor, Avena fatua and Vicia sativa in both the year. Post-emergence application of all the herbicides except quizalofop 25 g/ha at 20 DAS and hand weeding twice resulted in significantly lower dry weight of weeds over pre-emergence pendimethalin 1.5 kg/ha. Higher doses of all the post-emergent herbicides were superior to their lower doses. Significantly lower dry matter accumulation of all the weed species and highest weed control efficiency was obtained with imazethapyr 150 g/ha (40 DAS). Imazethapyr 150 g/ha at 40 DAS resulted in maximum plant height, dry matter accumulation, crop growth rate, relative growth rate nodule count and weight and green pod and haulm yields. Weeds in untreated check reduced pea pod yield by 56.8% over the best post-emergent herbicidal treatment (imazethapyr 150 g/ha at 40 DAS) in 2005-06 and 60.1% in 2006-07.

Email

mc_rana2003@yahoo.com

Address

Department of Agronomy, CSK Himachal Pradesh Krishi Vishvavidyalaya, Palampur, Himachal Pradesh 176 062
Bio-efficacy on tank-mixed propaquizafop and imazethapyr against weeds in soybean
Manoj Kumar Sandil, J.K. Sharma, Pratik Sanodiya* and Alok Pandey
Full length articles | DOI: | Volume: 47 Page No:158-162 |
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Abstract:

Intensive use of agro-chemicals coupled with congenial edaphic and weather conditions during Kharif season aggravate the weed menace, resulting into low yields of soybean. The experiment was conducted on the agricultural farm at Jawaharlal Nehru Krishi Vishwa Vidyalaya at Jabalpur in 2011-12. The rampant weed species identified in the experimental field was monocot weeds Cyperus rotundus (25.8 and 23.6%) followed by Echinochloa colona (23.1 and 23.3%) and Commelina benghalensis (15.6 and 17.8%). Beside these dicot weeds Eclipta alba (19.1 and 20.3%), and Alternanthera philoxeroides (16.4 and 14.9%) were also found in soybean ecosystem at 45 DAS and harvest stage, respectively. The weed menace was minimum under weed free treatment. Among the propaquizafop treatments, activity of propaquizafop at lowest dose 62.5 g/ha and highest dose 75 g/ha as post emergence was not well marked against most of weeds (broad-leaved) but imazethapyr applied at 50, 75, 100 g/ha controlled broadleaved and grassy leaved weeds. Among herbicidal treatments, combined application of propaquizafop + imazethapyr as post-emergence 75 + 100 g/ha was most effective to reduced most of weed flora.

Email

prsanodiya10@gmail.com

Address

Jawaharlal Nehru Krishi Vishwa Vidyalaya, Jabalpur, Madhya Pradesh 482 004
Weed management in soybean with pre- and post-emergence herbicides
Smita Prachand, Aniket Kalhapure* and K.J. Kubde
Full length articles | DOI: | Volume: 47 Page No:163-165 |
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Abstract:

A field experiment was conducted to study the efficacy of different pre- and post-emergence herbicides and their combinations to control the weeds in soybean during Kharif season of the year- 2012. Application of imazethapyr 0.100 kg/ha + quizalofop-ethyl 0.075 kg/ha as post-emergence was found to be more efficient to control monocot and dicot weeds in soybean which recorded lowest weed density, dry matter and weed index. It also found superior in respect of various growth and yield attributes. Highest seed yield (2.45 t/ha) and straw yield of soybean and maximum gross return (` 81,500/-) and net return (` 56,269/-) were also recorded in imazethapyr 0.100 kg/ha + quizalofop-ethyl 0.075 kg/ha as postemergencewith highest B:C ratio of 3.23. It was also found responsible for highest uptake of N, P and K by soybean crop and lowest uptake of these plant nutrients by weed plants.

Email

aniketmpkv@gmail.com

Address

Department of Agronomy, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra 444 104
Residues of imazethapyr in field soil and plant samples following an application to soybean
Shobha Sondhia*
Full length articles | DOI: | Volume: 47 Page No:166-169 |
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Abstract:

Imazethapyr is widely used in pulses and leguminous crops including soybean for control of a broad spectrum of weed species. This has often resulted in carryover effects on several sensitive rotational crops. Therefore field studies were conducted for two consecutive years to evaluate residues of imazethapyr in the soil and the soybean crop produce. Imazethapyr was applied at 100 and 200 g/ha as post-emergence herbicide in soybean field. Residues of imazethapyr were found in the range of 0.011 to 0.063 μg/g in the straw following an application in soybean field at 100 to 200 g/ha in both the years. However in the soil and soybean oil, residues were found below 0.01 μg/g in both the years at two levels of application of imazethapyr. The overall residues were less in the soil as compared to the plant samples. Terminal residues of imazethapyr in soybean plant and soil were found below maximum residue level (MRL) limits. This study demonstrated enrichment of imazethapyr residues in soybean plants after repeated application. Based on this study a pre-harvest interval of 80-90 days for soybean crop after imazethapyr application is suggested.

Email

shobhasondia@yahoo.com

Address

ICAR - Directorate of Weed Research, Jabalpur, Madhya Pradesh 482 004
Control of broomrape in Indian mustard
S.S. Punia*
Full length articles | DOI: | Volume: 47 Page No:170-173 |
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Abstract:

To study the efficacy of pendimethalin alone or in combination with neem cake and castor cake, seed treatment with various herbicides and post-emergence application of glyphosate at very low concentrations, field experiments were conducted during Rabi season of 2008-09 and 2009-10, at village Obera, Distt. Bhiwani and Dry land Research Area of CCS HAU Hisar (Haryana). Feasibility of adoption of results of study was tested by multi location field trials conducted through farmers’ participatory approach in different parts of state during 2010-2013. Pre-emergence, pre-plant incorporation or herbigation of pendimethalin along with hoeing as well as use of organic manures, viz. castor cake and neem cake proved ineffective in minimizing density of this weed. Seed coating of mustard seeds with 1.0 ppm of chlorsulfuron or triasulfuron gave 70-98% control of Orobanche aegyptiaca but efficacy of seed treatment with sulfosulfuron was poor. Post emergence application of glyphosate at 25 and 50 g/ha with 1% solution of (NH4)2SO4 at 25 and 55 DAS showed promise with 63-100% control of this weed not only in experimental fields but in large scale farmers’ fields. Glyphosate dose range is very limited. Over dosing of glyphosate, resulted in 15-35% toxicity to mustard in terms of marginal leaf chlorosis, slow leaf growth and bending of apical stems and stunting with yield penalty. Bleaching of few leaves of mustard occurred with 50 g/ha dose at 55 DAS, which also recovered within 20 days resulting with no loss in yield.

Email

puniasatbir@gmail.com

Address

Department of Agronomy, CCS Haryana Agricultural University, Hisar, Haryana 125 004
Integrated weed management in groundnut
K. Kalaichelvi*, S. Sakthivel and A. Balakrishnan
Full length articles | DOI: | Volume: 47 Page No:174-177 |
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Abstract:

Field experiment was conducted to study the influence of integrated weed management practices on seed pod yield in groundnut at Agricultural Research station, Vaigaidam during Rabi 2011-12. Weed control efficiency was higher with pre-emergence application of oxyfluorfen at 0.25 kg/ha followed by hand weeding on 20 DAS and pendimethalin at 0.75 kg/ha followed by a hand weeding on 20 DAS at different intervals of 10, 25, 40 and 60 DAS. Weed density of sedge was significantly lowered with preemergence application of oxyfluorfen at 0.25 kg/ha on 3 DAS. Number of pods per plant and seed pod yield was significantly higher with pre-emergence application of pendimethalin at 0.75 kg/ha, alachlor 1.0 kg/ha) and oxyfluorfen at 0.25 kg/ha followed by hand weeding at 20 DAS. Layby application of pendimethalin at 0.75 kg/ha at 3 and 45 DAS after earthing up was also at par with pre-mergence herbicide followed by hand weeding. Phytotoxicity symptoms has been observed with layby application of oxyflourfen 0.25 kg/ha on 45 DAS after earthing up and this resulted lower yield even if this treatment has recorded lesser weed density.

Email

kalaiagronomy@gmail.com

Address

Tapioca and Castor Research Station, Yethapur, Tamil Nadu 636 119
Intercropping and weed management effect on soil microbial activities in newly planted mango and citrus orchards
C. Sarathambal*, V.P. Singh, K.K. Barman, M.S. Raghuvanshi1 and R.P. Dubey
Full length articles | DOI: | Volume: 47 Page No:178-182 |
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Abstract:

Application of herbicides and other agro-chemicals used in agriculture affects the vital functions and population dynamics of soil microorganisms. Soil microbial population was assessed in 30 days interval up to 90 days in mango and citrus orchards. Among the treatments, intercropping of greengram-peagreengram recorded higher bacterial population (21.7 x 106cfu/g), was followed by intercropping of cowpea-pea-cowpea (19.5x106 cfu/g) at 90 days after spraying. It was found that the highest fungi population was recorded in intercropping of greengram-pea-greengram combined with herbicide application treatment (14.4 x 103 cfu/g). Similarly, higher actinomycetes population was observed in intercropping of greengram-pea-greengram treatment (8.2 x 103cfu/g) followed by intercropping of cowpea-pea-cowpea (7.3 x 103cfu/g) in mango orchard. In citrus field, highest bacterial population was observed in intercropping of greengram-pea-greengram treatment (21.3 x 106cfu/g).This was followed by intercropping of cowpea-pea-cowpea (18.4 x 106 cfu/g). The maximum fungi population (14.8 x 103cfu/g) was observed in cowpea-pea-cowpea treatment and maximum actinomycetes (8.4 x 103 cfu/g) population was recorded in intercropping of greengram-pea-greengram treatment. Basal respiration was significantly more in treatments of intercropping systems. Among the treatments, intercropping of greengram-pea-greengram treatment (193 mg/kg of CO2-C) had more basal respiration rate during Kharif season in mango orchard. Similar trends were observed in citrus orchard.

Email

saratha6@gmail.com

Address

ICAR - Directorate of Weed Research, Jabalpur Madhya Pradesh 482 004
Lethal soil temperature under plastic mulch on growth and suppression of nutgrass
R. Devendra*, S.B. Manjunatha, N. Naveen Kumar and T.V. Ramachandra Prasad
Full length articles | DOI: | Volume: 47 Page No:183-187 |
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Abstract:

Lethal soil temperature impedes tuber formation, enhances respiration and depletes the tuber’s reserves and reduced size and viability. Attempts were made to increase soil temperature to lethal level by clear plastic mulch (PM), with hot water irrigation (HW), and its effect was assessed on growth of C. rotundus. During June 2010, quantity and frequency of hot water irrigation required to maximize the soil temperature was standardized using rain out shelter, load cell–digital weighing device by gravimetric method (40 liter/m2 and once in 4 days). During September 2011, effect of randomly stitched varied thickness 50, 75, 125 and 175 micron plastic mulch of size 1.25 x 1.25 m2 was spread over C. rotundus infected micro-plot and HW irrigated on soil temperature was assessed. Increased soil temperature under different thickness PM was at par with 175 micron. Further, the mean soil temperature and day/night fluctuation in plastic mulch with hot water (PM + HW) plot was congenial for C. rotundus growth, enhanced spouting and development of new tubers during September. During April 2012, hot water irrigated during 2.00-3.00 PM, soil temperature reached lethal level. Further, woolen blanket cover (WBC) between 4.0 PM to next day 9.0AM, retained warm temperature during night and maintained higher initial soil temperature next day. Thus during April, led soil temperature (58º C) to lethal level during 30 days of integrating PM + HW + WBC and caused drastically reduction of biomass (87%), number of tubers (62%) per 0.025m2 with loss of tuber viability.

Email

dev.cuti@gmail.com

Address

Department of Agronomy. University of Agricultural Sciences, Bengaluru, Karnataka 560 065
Population dynamics and sex ratio of two biocontrol agents of water hyacinth
Puja Ray* and Sushilkumar
Full length articles | DOI: | Volume: 47 Page No:188-192 |
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Abstract:

Population dynamics and sex ratio of two co-existing species of Water hyacinth weevils, Neochetina bruchi Hustache, 1826 and N. eichhorniae Warner, 1970 (Coleoptera: Curculionidae) were studied. The weevil attack on Water hyacinth was investigated monthly for four years in different water bodies. The weevil’s abundance was affected by temperature, humidity and rainfall. The population of the weevils in general was highest (14.97 weevils/plant) in September when the humidity level was very high (88%) with the average of temperature almost 26o C. The lowest abundance (2.49 weevils/plant) was in January when the temperature was the lowest (15.7o C). The abundance of N. bruchi was significantly higher than the population of N. eichhorinae (1:0.04) in Jabalpur, India. Statistical studies revealed that the sex ratio was in favour of female in both the species (1:0.52 and 1:0.70 for N. bruchi and N. eichhorniae, respectively).

Email

puja.ray@gmail.com

Address

ICAR - Directorate of Weed Research, Jabalpur, Madhya Pradesh 482 004
Leaching behaviour of four herbicides in two soils of Kerala
K.M. Durga Devi*, C.T. Abraham and C.N. Upasana
Full length articles | DOI: | Volume: 47 Page No:193-196 |
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Abstract:

The present study was conducted to find out the extent of leaching of butachlor, pretilachlor, 2,4-D and oxyfluorfen in two soil types, viz. Type I [coarse textured low organic matter soil (Mannuthy–Ultisol] and Type II [fine textured high organic matter soil (Alappad-Inceptisol]. Intact soil columns were collected from the paddy fields after the harvest of second crop. Butachlor, pretilachlor, 2,4-D and oxyfluorfen were applied in moist soil columns at the recommended rate of application. Soil samples from different depths up to 10 cm (top 5 segments of 2 cm each) and the leachate at 30 and 60 cm depths were analyzed for herbicide residues using gas chromatography. Among the four herbicides tested, 2,4-D registered highest level of residue in the leachate (0.20 ppm at 60 cm depth). Pretilachlor and butachlor followed the same trend in the pattern of movement of residue through the soil columns. However, the leachate of pretilachlor registered much lower quantity of residue (0.006 ppm). Fine textured organic matter rich soil recorded lower residue levels compared to the soil with coarse texture and poor organic matter. It could be attributed to the high adsorptive power of the soil, especially at the top layers with high organic matter content. Oxyfluorfen residues could not be detected in the leachate, because of its poor water solubility.

Email

durgadevikm@rediffmail.com

Address

College of Horticulture, Kerala Agricultural University, Thrissur, Kerala 680 656
Knowledge based system for weed seed identification
V.S.G.R. Naidu*, H. Ravisankar, Sandeep Dhagat, Virendra Kamalvanshi and A.R. Sharma
Full length articles | DOI: | Volume: 47 Page No:197-200 |
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Abstract:

The term ‘weed’ always has a negative connotation not only by its presence as a plant but as a seed also. The movement of most of the weeds from one location to the other is mainly through their seeds. Correct identification of weed seeds is therefore necessary for strict quarantine to check the spread of weed seeds from one place to another. Accurate identification of weed seeds requires skill and good judgment on the part of the examiner and it is a difficult task for a layman. Therefore, availability of a state of art technology for identification of weed seeds is very much needed. For identification of weed seeds, a Knowledge Based System (KBS) contains information about 120 weed seeds with 11 parameters each has been developed at the Directorate of Weed Research, Jabalpur (India) using Visual Basic. Net as front-end application and MS Access as back-end application with user-friendly menus. In this study, a rule based system for identification of weed seeds was developed that helps the stakeholder in identifying the weed seeds.

Email

vsgrnaidu@gmail.com

Address

ICAR - Directorate of Weed Research, Jabalpur, Madhya Pradesh 482 004
Bio-efficacy of sequential application of herbicides on weed control, growth and yield of wet-seeded rice
K.V. Sairamesh, A.S. Rao*, G. Subbaiah and P. Prasuna Rani
Short communications | DOI: | Volume: 47 Page No:201-202 |
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Abstract:

-

Email

atlurisrao@gmail.com

Address

Department of Agronomy, Agricultural College, Bapatla, Andhra Pradesh 522 101
Weed management under different planting geometry in dry direct-seeded rice
Neeshu Joshi*, V.P. Singh, V.C. Dhyani, Subhash Chandra and S.K. Guru
Short communications | DOI: | Volume: 47 Page No:203-205 |
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neeshu.joshi@gmail.com

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Department of Agronomy College of Agriculture, G.B. Pant University Agriculture & Technology, Pantnagar, Uttarakhand 263 145
Effect of weed management on growth, yield and nutrient uptake of greengram
Komal, S.P. Singh* and R.S. Yadav
Short communications | DOI: | Volume: 47 Page No:206-210 |
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spbhakar2010@gmail.com

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College of Agriculture Bikaner, SK Rajasthan Agriculture University, Bikaner, Rajasthan 334 006
Bioefficacy of herbicides in blackgram and their residual effect on succeeding mustard
Sandeep Kumar, M.S.Bhatto, S.S. Punia* and Rajni Punia
Short communications | DOI: | Volume: 47 Page No:211-213 |
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puniasatbir@gmail.com

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Department of Agronomy, CCS Haryana Agricultural University, Hisar, Haryana 125 004
Weed management in transplanted ragi
B. Krishna Prithvi, A.S. Rao* and K. Srinivasulu
Short communications | DOI: | Volume: 47 Page No:214-215 |
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atlurisrao@gmail.com

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Agricultural College, Bapatla, Andhra Pradesh 522 101

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