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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- 46 | Issue-2 (Apr-Jun) | Year 2014

Paradigm shifts in weed science and challenges they pose to India and weed scientists
V.S. Rao
Review article | DOI: | Volume: 46 Page No:111-116 |
Address & Email | Article preview | View PFD | Download

Abstract:

Inventions are the agents of change and have been the driving force behind the paradigm shifts that occurred throughout human history. There have been several paradigm shifts in the field of weed science too. The first one was the birth of modern weed science seven decades ago in 1944 when 2,4-D became commercially available. Since then, hundreds of newer organic herbicides have been developed and these became the mainstay of weed management in cropping and non-cropping systems around the world. The second paradigm shift was the evolution of herbicide resistance in 1968 when Senicio vulgaris was found resistant to 2,4-D. This was followed with hundreds of reports till today.  The  third paradigm shift in weed science occurred in 1994 when transgenic herbicide resistance crops, beginning with the approval of bromoxynil-resistant BXN cotton developed by Calgene and Rhône-Poulenc and glyphosate resistant soyabean developed by Monsanto, both in USA. These paradigm shifts has led challenges to India and Indian weed scientists too. This paper presents the various research challenges  required to be worked, both directly and indirectly by the Indian scientists.

Email

dr_vs_rao@yahoo.com

Address

International Weed Scientist based in Elk Grove, California, USA 95757
Tillage, crop establishment and weed management in rice under conservation agriculture system
R. Govindan and C. Chinnusamy
Full length articles | DOI: | Volume: 46 Page No:117-122 |
Address & Email | Article preview | View PFD | Download

Abstract:

Field experiments were carried out in wetland farm at Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu during 2012-13 to study the weed density, weed seed bank, yield and economics of rice under rice based conservation agriculture system. The main plot consisted six treatments with two crop establishment methods and three tillage practices over the seasons. Sub-plot treatments were having three weed management practices. Significantly minimum total weed density, weed seed count and higher grain yield, net returns were recorded in transplanted rice with conventional tillage in CT-CT-ZT system with pre-emergence treatment (PE) of butachlor 1.0 kg/ha for Kharif, pretilachlor 1.0 kg/ha PE for Rabi + inter crop with daincha (Sesbania) incorporation and mechanical weeding on 35 DAT during Kharif 2012, Rabi 2012-13 and Kharif 2013.

Email

govindan.agr@gmail.com

Address

Department of Agronomy, Tamil Nadu Agricultural University, Coimbatore 641 003
Effect of herbicides and their combination on weed dynamics in rice-based cropping system
C. Ramachandra, N. Shivakumar and G.K. Ningaraju
Full length articles | DOI: | Volume: 46 Page No:123-125 |
Address & Email | Article preview | View PFD | Download

Abstract:

A field experiment was conducted at Zonal Agricultural Research Station, Mandya, Karnataka to study the shift in weed flora of different weed species due to application of pre-sowing, pre-emergence and post-emergence application of herbicides in comparisons with hand weeding and mechanical weeding. The effect of combination of herbicide bensulfuron-methyl + pretilachlor as well as mono-herbicide butachlor  and their post-planting application were evaluated for their bio-efficacy either alone or combination with pre-planting application of non-selective glyphosate application. The treatment comprised of eight different weed management practices were laid out in randomised complete block design with three replications. The results revealed that application of glyphosate (15 days before transplanting of rice 0.75 kg/ha) in combination with bensulfuron methyl + pretilachlor  applied at 5 DAT recorded higher grain yield of 7.02 t/ha and found significantly superior over other treatments due to reduced weed population and biomass of weeds (10.30 g/m2) and higher weed control efficiency (64.97%) when compared with weedy check. There was more than 36% reduction in the grain yield of rice due to competition with weeds in weedy plots. The rice yield and weed control efficiency of herbicide combination was at par with recommended practice of hand weeding twice at 20 and 40 DAT. Sequential herbicide application is promising and effective in control of weeds as compared to single herbicide application in rice-based cropping system

Email

ramaakhil09@gmail.com

Address

Zonal Agricultural Research Station, V.C. Farm, Mandya, Karnataka 571 405
Management of weeds in direct-seeded rice by bispyribac-sodium
Rohitashav Singh, Ram Pal, Tejpratap Singh, A.P. Singh, Subash Yadaw and Jodhpal Singh
Full length articles | DOI: | Volume: 46 Page No:126-128 |
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Abstract:

A field experiment was conducted during the Kharif season of 2011 and 2012 at G.B.Pant University of Agricultureand Technology, Pantnagar to find out the efficacy of bispyribac-sodium in managing weeds in direct-seeded rice. Among the treatments, bispyribac-sodium 20 and 25 g/ha applied at 1-3 leaf stage or at 4-6 leaf stage of the weeds was found the most efficient having lowest weed density and biomass during both the years. Rice grain yield and yield attributing characters (tillers/m2 and grains/panicle) were influenced by the effectiveness of the treatments. The highest grain yield of rice was recorded with weed free (4.03 t/ha) which was at par with bispyribac-sodium 20 and 25 g/ha.

Email

rohitash_1961@rediffmail.com

Address

G. B. Pant University of Agriculture & Technology, Pantnagar, Uttarakhand 263 145
Residual effect of sulfonylurea herbicides applied to wheat on succeeding maize
Tarundeep Kaur and Lall Singh Brar
Full length articles | DOI: | Volume: 46 Page No:129-131 |
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Abstract:

The field experiment was conducted to assess the residual effects of sulfosulfuron (25, 37.5 and 50 g/ha) and mesosulfuron + iodosulfuron (12, 18 and 24 g/ha) herbicides applied to wheat on maize (Zea mays L.) grown in sequence at Ludhiana, Punjab (India). None of the sulfonylurea herbicides (sulfosulfuron and mesosulfuron + iodosulfuron) applied to wheat at different doses affected the emergence of maize crop during both the years. But the effect was evident on growth characters and yield during 2005 whereas in 2004, plant height and dry matter at all stages of maize was not affected significantly. This might be due to difference in rainfall received at different stages of the crop growth in both the years. The rainfall received from April to June (optimum sowing time) was 137 mm and 54.2 mm in 2004 and 2005, respectively, however, in July rainfall was more in 2005 but the earlier status of rainfall was more responsible for the residual effect in 2005 as the reduced rainfall presumably left the soil dry for long time and might have resulted in slow dissipation rate of the herbicides. Again in August, rainfall was more in 2004 (+45.7 mm departure from normal rainfall in 2004) than 2005 so this might have enhanced the movement of the herbicide to lower surface  and thus no residual effect was observed on the crop. Hence, it is not safe to grow maize in rotation after application of these sulfonylurea herbicides on wheat, as significant effect on the growth and yield of maize was recorded during the years of less rainfall.

Email

tarundhaliwal@pau.edu

Address

Department of Agronomy, Punjab Agricultural Univer
Effect of sowing time and weed management on performance of pigeonpea
R.S. Malik and Ashok Yadav
Full length articles | DOI: | Volume: 46 Page No:132-134 |
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Abstract:

Field studies were conducted at Research Farm of CCS Haryana Agricultural University, Hisar, during Kharif 2006 and 2007 to find out the effect of sowing time (10th May, 25th May, 10th June and 25th June) and weed control measures consisted weedy, weed free, pendimethalin 1.0 kg/ha as pre-emergence (PE) fb  HW at 60 DAS, trifluralin 1.0 kg/ha as pre-plant incorporation (PPI)  fb  HW at 60 DAS and  HW at 30 and 60 DAS), in pigeonpea (Cajanus cajan L.). Results revealed that density and biomass of weeds increased with the corresponding advancement in crop growth and delay in sowing time from 10th May to 25th June. Pendimethalin 1.0 kg/ha as PE and trifluralin 1.0 kg/ha as PPI each followed by (fb) one hand weeding (HW) at 60 days after sowing (DAS) provided better weed control than  HW up to 60 DAS but at 90 DAS, these three treatments were statistically at par. Trifluralin fb HW had an edge over pendimethalin fb HW up to 60 DAS. In general, yield and yield parameters of pigeonpea were superior when crop was sown on 10th and 25th May compared to delay in sowing (10th and 25th June) during both the years. Performance of crop was similar when sown on 10th and 25th May. Among weed control treatments, trifluralin 1.0 kg/ha (PPI) fb 1 HW at 60 DAS, being at par with 2 HW, had an edge over pendimethalin 1.0 kg/ha (PE) fb 1 HW at 60 DAS in respect of yield attributes and ultimately yield of pigeonpea.

Email

aky444@gmail.com

Address

Department of Agronomy, CCS Haryana Agricultural University, Hisar, Haryana 125 004
Promising early post-emergence herbicides for effective weed management in soybean
Dheer Singh, Nazim Hamid Mir, Nipendra Singh and Jitendra Kumar
Full length articles | DOI: | Volume: 46 Page No:135-137 |
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Abstract:

A field experiment was conducted during Kharif season of years 2011 and 2012 at Norman E. Borlaug crop research centre of Govind Ballabh Pant University of Agriculture & Technology, Pantnagar (U.S. Nagar), Uttarakhand. Fluazifop-p-butyl + fomesafen controlled grasses and non-grassy weeds effectively and recorded 29.3 weeds/m2  in 500 g/ha against (171.17/m2) in untreated check. However, the grain yield was highest (2.21 t/ha) in the treatment of weed free followed by fluazifop-p-butyl + fomesafen applied 313 g/ha as post-emergence (2-5 leaf stage of weeds). Biomass of weeds was also lowest in fluazifop-p-butyl + fomesafen  313 g/ha treated plots. However, total weed density was lowest in fluazifop-p-butyl + fomesafen 500 g/ha treated plot but this dose showed toxic effects on crop. Weed index was lowest (7.8%) in the treatment of fluazifop-p-butyl + fomesafen 313 g/ha and highest in untreated (63.5%).

Email

singhdheer2011@gmail.com

Address

College of Agriculture, Govind Ballabh Pant University of Agriculture and Technology, Pantnagar, Uttarakhand 263 145
Productivity of sunflower as influenced by tillage and weed management
R. Baskaran and R. Kavimani
Full length articles | DOI: | Volume: 46 Page No:138-141 |
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Abstract:

Field experiments were conducted during Rabi and Kharif season of 2012 and 2013 at northern block of Cotton Research Station, Veppantattai, Tamilnadu, to study the effect of tillage and weed management methods on weeds dynamics and yield of sunflower under irrigated conditions. The experiments were laid out in strip plot design with three replications. Main plot treatment consisted of three tillage methods, viz. conventional tillage, minimum tillage and zero tillage. Five weed management methods, viz. pre-emergence application of pendimenthalin 1.0 kg/ha followed by hand weeding on 40 DAS, pre-emergence application of pendimethalin 1.0 kg/ha followed by power weeding on 40 DAS, hand weeding twice on 20 and 40 DAS, power weeding on 20 and 40 DAS along with an unweeded check for both the crops were included in the sub-plot treatments. The sunflower hybrid seed ‘Sunbred’ were sown on 60 x 30 cm spacing. The results revealed that conventional tillage combined with pre-emergence herbicide application of pendimethalin 1.0 kg/ha followed by hand weeding on 40 DAS recorded lower weed density, weed biomass and higher yield attributes and yield.

Email

rbaski73@gmail.com

Address

Cotton Research Station, Tamil Nadu Agricultural University, Veppanthattai, Tamil Nadu 621 116
Weed management in onion by pre-planting and post-emergence herbicides for seed production
Aniket Kalhapure, Balasaheb Shete and Madhukar Dhonde
Full length articles | DOI: | Volume: 46 Page No:142-145 |
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Abstract:

A field experiment was conducted at Mahatma Phule Krishi Vidyapeeth, Rahuri, Maharashtra, India  for two consecutive Rabi seasons 2011 and 2012 to find out most suitable and efficient combination of different pre-plant and post-emergence herbicides to control weeds in onion seed production crop. Experiment was conducted in randomized block design with 9 treatments and three replications consisting of pre-plant application of pendimethalin, post-emergence application of oxyfluorfen and quizalofop-ethyl and their different combinations. The pre-plant application of pendimethalin 0.750 kg/ha followed by post-emergence application of oxyfluorfen 0.250 kg/ha mixed with quizalofop-ethyl 0.050 kg/ha resulted in effective control of various broad-leaf and grassy-weeds and recorded lower weed density, weed biomass, weed index and higher weed control efficiency. This treatment also produced higher number of umbels per plant, plant dry matter, number of seeds per umbel, seed weight per umbel, 1000 seed weight and longer flowering stalk, and diameter of umbel. It also produced higher seed yield (439.30 kg/ha), gross return (` 329,475/ha), net return (` 192,450/ha) and B:C ratio (2.40) over all the other chemical weed control treatments. 

Email

aniketmpkv@gmail.com

Address

Seed Cell Unit, Mahatma Phule Krishi Vidyapeeth, Rahuri, Maharashtra 413 722
Chemical weed management in garlic
Sampat, Sandeep Chopra, Anil Kumar and R.K. Samnotra
Full length articles | DOI: | Volume: 46 Page No:146-150 |
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Abstract:

A field experiment was conducted to study the influence of various herbicidal treatments on the growth and productivity of garlic (Allium sativum L.) during 2012-13 and 2013-14 on sandy loam soils of SKUAST, Chatha. The experiment involved two genotypes of garlic replicated thrice in factorial randomized block design. The weed density, weed dry matter accumulation and weed control efficiency varied significantly with the stage of the crop showing a declining trend,  being  highest at 60 days after sowing and lowest at the time of harvesting.  Significantly lower weed density, weed dry matter accumulation, weed index and relatively higher weed control efficiency were recorded in large segmented cultivar (SJKG-01) with weed free plots followed by treatment with pre-emergence application of oxadiargyl 90 g/ha fb post-emergence application of quizalofop-ethyl 50 g/ha, at 2-3 leaf stage of weeds.  The average bulb weight (26.73 g), bulb diameter (3.96 cm.) and bulb yield (4.83 t/ha) were also more in large segemented than the smaller one (SJKG-02).  Among herbicidal treatments, the weed free plots in both the cultivars produced plants with more average bulb weight, bulb diameter and bulb yield followed by the plots with pre-emergence application of oxadiargyl fb post-emergence application of quizalofop-ethyl, applied at 2-3 leaf stage of the weeds.  From  economics point of view, the weed free plots resulted in higher cost of cultivation and net returns followed by the treatment combination of oxadiargyl  90 g/ha pre-emergence  fb quizalofop-ethyl as post-emergence 50 g/ha applied at 2-3 leaf stage of weeds yielding a B: C ratio of 5.70 in small segmented and 6.73 in large segmented garlic respectively.

Email

drsc373@rediffmail.com

Address

Division of Vegetable Science & Floriculture, Sher-e-Kashmir University of Agricultural Science and Technology, Chatha, Jammu & Kashmir 180 009
A new cost-effective method for quantification of seed bank of Orobanche in soil
Aditi Pathak and C. Kannan
Full length articles | DOI: IJWS-2014-46-2-11 | Volume: 46 Page No:151-154 |
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Abstract:

A simple technique to germinate Orobanche in the presence of live host seedlings under controlled conditions was developed. Surface sterilized seeds were preconditioned separately in Petriplates and were transferred on a bed made of sterilized sand, cotton and filter paper kept on a 1000 ml beaker. Host plant (mustard and tomato) seeds were germinated in Petriplates and transferred to the beaker containing the preconditioned Orobanche seeds. The beakers were then incubated at room temperature for 10 days and observed under stereo binocular microscope. This technique may be useful in many ways including quantification of the weed seed bank in the infested fields, screening of contaminated seed lots from infested areas for the purpose of quarantine and seed certification. Use of live host seedlings instead of synthetic stimulants, both reduced the cost and made it possible to use this technique. 

Email

agrikannan@gmail.com

Address

Directorate of Weed Science Research, Jabalpur, Madhya Pradesh 482 004
Mycobiota associated with Parthenium hysterophorus isolated from North India
N.K. Aggarwal, M. Kaur, V. Kumar and A. Saini
Full length articles | DOI: IJWS-2014-46-2-12 | Volume: 46 Page No:155-160 |
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Abstract:

Parthenium hysterophorus, one of the “worst weeds”, is an erect and much branched annual or ephermeral herb causing colossal loss in terms of economic, environmental, animal and human health hazards. A survey on occurrence of the natural enemies of P. hysterophorus L. was conducted in Kurukshetra and its adjoining areas, Haryana, India. The Parthenium population at different places during different seasons were found to have various diseases. The native pathogens of Parthenium hysterophorus were studied and compared on the basis of pathogenicity by Koch’s postulates. A total of twenty six pathogenic fungi, P1-P26 were isolated from different diseased Parthenium plants. All the isolates were preliminarily identified on the basis of cultural and morphological characteristics and it was observed that all of them belongs to the fungi imperfecti except isolates P19, P20 which belongs to Ascomycota. On the basis of pathogenicity, the isolates P2, P5, P7, P9, P12, P17 and P23 were selected and the effect of different media on the growth and sporulation of selected pathogens was tested. This study will help to develop mycoherbicides by using these fungal pathogens in combination or single.

Email

mani7yu@gmail.com

Address

Department of Microbiology, Kurukshetra University, Kurukshetra 136 119
Impact of invasive alien siam weed and congress grass on native flora
Kavitha Sagar, M.D. Rajanna and R.R. Rao
Full length articles | DOI: IJWS-2014-46-2-13 | Volume: 46 Page No:161-165 |
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Abstract:

Study was done on impact of invasive alien weeds Chromolaena odorata and Parthenium hysterophorus on native naturalized flora of few selected sites in Mysore, Karnataka. Total six sites were selected for the study. Of which, at 3 sites C. odorata and P. hysterophorus were present (sites 1, 2 and 3) while at other 3 sites C. odorata and P. hysterophorus were absent (sites 4, 5 and 6). At sites 1, 2 and 3, frequency, density and abundance of the native flora were low than the sites 4, 5 and 6. There was 30, 24 and 12% reduction of native flora at sites 1, 2, and 3, respectively. There was a constant fear of losing many medicinally and economically important plants due to invasion of these weeds.

Email

kavcsa@gmail.com

Address

Botanical Garden, Gandhi Krishi Vigyan Kendra, UAS, Bangalore, Karnataka 560 065
Integrated weed management and crop establishment method for higher yield in direct-seeded rice
R.I. Yadav, M.K. Singh and Ram Kumar Singh
Short communications | DOI: IJWS-2014-46-2-14 | Volume: 46 Page No:166-168 |
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Abstract:

A field trial was conducted during Kharif 2012 at Agricultural Research Farm, Institute of Agricultural sciences, Banaras Hindu University, Varanasi, Uttar Pradesh (India) to study effect of rice establishment and integrated weed management practices on weed growth and grain yield. Pendimethalin 1.0 kg/ha fb azimsulfuron 17.5 g/ha + bispyribac 25 g/ha 15 DAS fb 1 HW significantly reduced weed density and weed biomass in comparison to oxadiagryl 50 g/ha fb metsulfuron-methyl 2 g/ha + chlorimuron-ethyl 2 g/ha 20 DAS fb 1 HW. Rice grain yield in CT paired row was statistically at par with CT normal spacing, CT square planting and RT paired row. It was significantly higher as compared to RT square planting. Amongst weed management practices, pendimethalin 1 kg/ha fb azimsulfuron 17.5 g/ha + bispyribac 25g/ha fb 1HW recorded higher rice grain yield attributing characters viz. number of panicles/m2, number of grains/panicle, test weight and grain yield and it was found significantly better than oxadiagryl 50 g/ha fb metsulfuron methyl 2g/ha+ chlorimuron-ethyl 2g/ha fb 1 HW.

Email

mksingh194.m@gmail.com

Address

Institute of Agricultural Sciences, Banaras Hindu University, Varanasi, Uttar Pradesh 221 005
Weed control in wet-seeded rice by post-emergence herbicides
Syama S. Menon, P. Prameela and C.T. Abraham
Short communications | DOI: 2014-46-2-15 | Volume: 46 Page No:169-171 |
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Abstract:

An experiment was conducted at Kole lands in Thrissur district, Kerala to study the efficacy of various post-emergence herbicides in wet-seeded rice. The results showed that cyhalofop-butyl + chlorimuron-ethyl+ metsulfuron-methyl, fenoxaprop-p-ethyl + chlorimuron-ethyl+ metsulfuron-methyl and bispyribac-sodium were best treatments with a lower weed biomass as well as high grain yield and B:C ratio. Maximum weed control efficiency of 97.1% was obtained in hand weeded plots followed by bispyribac-sodium (93.6%). The highest grain yield of 6.13 t/ha was recorded in hand weeded plot which was at par with cyhalofop-butyl + chlorimuron-ethyl + metsulfuron-methyl and fenoxaprop + chlorimuron ethyl+ metsulfuron-methyl (5.8 t/ha). From this study it can be concluded that, cyhalofop-butyl with a follow up spray of chlorimuron-ethyl + metsulfuron-methyl or fenoxaprop-p-ethyl with a follow up spray of chlorimuron-ethyl + metsulfuron methyl or bispyribac sodium alone can be recommended for effective post emergence weed control and higher yield in wet seeded rice. If grasses are the predominant weeds, cyhalofop-butyl or fenoxaprop-p-ethyl alone without follow up spray of chlorimuron-ethyl + metsulfuron-methyl can also be recommended.

Email

menonsyama105@gmail.com

Address

College of Horticulture, Kerala Agricultural University, Thrissur, Kerala 680 656
Integrated weed management in dry-seeded rice
Zahoor Ahmad Ganie*, Samar Singh and Samunder Singh
Short communications | DOI: 2014-46-2-16 | Volume: 46 Page No:172-173 |
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Abstract:

The present study revealed that weeds cause a rice yield loss of about 90% in dry-seeded rice and the integrated approach to control weeds based on PE application of pendimethalin 1.0 kg/ha  fb  POE bispyribac-sodium 25 g/ha + ready-mix chlorimuron + metsulfuron 4 g/ha 30 DAS fb one HW 60 DAS was found to be best with WCE of 82%. Increase in rice seed rate from 10 to 32.5 kg/ha resulted in decrease in weed density and weed biomass but the rice yield increase beyond 17.5 kg/ha seed rate was non-significant. Therefore, rice seed rate of 17.5 kg/ha was found optimum for DSR, however it needs further investigation and confirmation. 

Email

zahoorganie11@huskers.unl.edu

Address

Department of Agronomy, CCS Haryana Agricultural University, Hisar, Haryana, 125 004
Yield performance of zero-till wheat with herbicides in rice-wheat cropping system
R.K. Singh
Short communications | DOI: 2014-46-2-17 | Volume: 46 Page No:174-175 |
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Abstract:

Ten on-farm trials (OFTs) were carried out at farmers’ fields in participatory mode during the Rabi season of 2007-08 to 2008-09 in selected adjoining villages to the Krishi Vigyan Kendra, Azamgarh of eastern Uttar Pradesh. The main objectives of activities were to evaluate the performance and profitability of zero tillage and herbicides on weed control and productivity of wheat crop under rice-wheat cropping system. Zero till sown wheat was found much effective in suppression of weed density and population of Phalaris minor in comparison to conventional tillage. A drastic reduction in weed density was obtained with the application of sulfosulfuron + metsulfuron methyl 75 WG at 40 g/ha ready-mix under both method of wheat sowing. The higher average grain yield and monitory returns were also achieved under zero tillage sown wheat combined with sulfosulfuron + metsulfuron methyl as post emergence. However, grain yield obtained under zero tillage was almost comparable to conventional tillage with fenoxaprop-p-ethyl 10 EC at 1000 ml/ha.

Email

rksagron@gmail.com

Address

Krishi Vigyan Kendra, Narendra Dev University of Agriculture and Technology, Azamgarh, Uttar Pradesh 276 207
Integrated weed management in transplanted rice
Vimal Raj Yadav, V. Pratap Singh, Abnish, Akshita, Usha and Rekha
Short communications | DOI: 2014-46-2-18 | Volume: 46 Page No:176-179 |
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Abstract:

The present study was conducted to quantify the effect of different weed control treatments alone or in combination with each other on weed growth and grain yield of transplanted rice during Kharif season of 2012 at G.B. Pant university of Agriculture and technology, Pantnagar, Uttarakhand. Different weed species responded variably to tested weed control treatments. The dominant weeds in experimental plots were Echinochloa colona, E. crusgalli, Leptochloa chinensis, Ischeamum rugosum among grasses and Ammania baccifera, Alternanthra sessilis and Ceasulia axillaris among broad-leaf weeds and Cyperus difformis was the only sedge. Pre-emergence application of pretilachlor 750 g/ha without water stagnation in the field up to one week fb post-emergence application of bispyribac-Na 20 g/ha was found superior to rest of the treatments.

Email

vimalrajyadav31990@rediffmail.com

Address

College of Agriculture, G.B. Pant University of Agriculture & Technology Pantnagar, Uttarakhand 263 145
Bioefficacy of some herbicides and their mixtures against complex weed flora in wheat
N.S. Yadav and Anil Dixit
Short communications | DOI: 2014-46-2-19 | Volume: 46 Page No:180-183 |
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Abstract:

The bio-efficacy of clodinafop-p-propargyl 60 g/ha was better against Avena ludoviciana Dur. and Pharalis minor Retz. to that of sulfosulfuron 25 g/ha, penoxsulam + cyhalofop 105 g/ha, penoxsulam + cyhalofop 150 g/ha and carfentrazone 25 g/ha but it was poor against broad leaved weeds. However, the mesosulfuron-methyl + iodosulfuron-methyl sodium 12 g/ha, sulfosulfuron + metsulfuron-methyl 40 g/ha and combined application of clodinafop-p-propargyl + 2,4-D (60+500) g/ha gave effective control of grassy and broad leaved weeds. Use of pinoxaden 60 g/ha or clodinafop 60 g/ha a brought about a reduction in infestation   of grassy weeds. Presently, some new herbicide ready mix combination of mesosulfuron-methyl + iodosulfuron-methyl sodium 12 g/ha, sulfosulfuron + metsulfuron-methyl 40 g/ha and tank mixture herbicides clodinafop + 2,4-D (60+500) g/ha appeared to be more profitable and efficient over other treatments.

Email

ny1977neeraj@gmail.com

Address

Directorate of Weed Science Research, Jabalpur, Madhya Pradesh 482 004
Tillage and weed management for improving productivity and nutrient uptake of soybean
Ali Monsefi, U.K. Behera, Nafiseh Rang Zan, R.N. Pandey and A.R. Sharma
Short communications | DOI: 2014-46-2-20 | Volume: 46 Page No:184-186 |
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Abstract:

In this study the population and dry matter of weeds was significantly more under under ZT than CT. Seed yield of soybean was the highest under CT–raised-bed, followed by ZT-raised-bed, CT–flat-bed and ZT-flat-bed. Application of pendimethalin + HW and pendimethalin + chlorimuron-ethyl resulted in almost similar weed control efficiency and gave equal seed yield. Uptake of N, P and K by grain was maximum under pendimethalin + HW, which was significantly more than rest of treatments. It was concluded that soybean can be grown under permanent raised-bed with pre- and post-emergence herbicides for realizing higher productivity.

Email

ukb2008@gmail.com

Address

Division of Agronomy, Indian Agricultural Research Institute, New Delhi 110012
Weed management in lentil with post-emergence herbicides
Guriqbal Singh, Harpreet Kaur and Veena Khanna
Short communications | DOI: 2014-46-2-21 | Volume: 46 Page No:187-189 |
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Abstract:

A field experiment was conducted at the Punjab Agricultural University, Ludhiana to study the effect of post-emergence herbicides imazethapyr at 25, 40 and 55 g/ha 25 or 35 DAS and quizalofop-ethyl at 30 and 50 g/ha 25 or 35 DAS along with unweeded check and two hand weedings at 30 and 60 DAS on weeds, growth and yield of lentil (Lens culinaris Medikus). Imazethapyr caused phytotoxicity to lentil but with time the crop recovered. Imazethapyr at 25 as well as 40 g/ha and quizalofop-ethyl at 30 g/ha, both at 25 and 35 DAS, did not adversely affect nodulation. Imazethapyr at 25 as well as 40 g/ha at either 25 or 35 DAS showed promise in improving the grain yield of lentil.

Email

singhguriqbal@pau.edu

Address

Department of Plant Breeding and Genetics, Punjab Agricultural University, Ludhiana, Punjab 141 004
Production potential of soybean-wheat cropping system through weed management
A.S. Jadhav
Short communications | DOI: 2014-46-2-22 | Volume: 46 Page No:190-191 |
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Abstract:

The benefits of tillage are multifaceted as it loosens soil, enhance release of nutrients from soil for plant growth, kill weeds and regulates the circulation of water and air through soil which lead to an enhanced nutrient uptake and better yield of crops. Weeds creating competition for nutrients, space, water etc. reduce the crop yield and deteriorate the quality of produce hence, reduce the market value of the turnout (Arif et al. 2006). The response of weed flora to different weed control methods also vary depending upon field situation. Tillage affects the weeds by uprooting, dismembering and burying them deep enough to prevent emergence by changing soil environment and so inhibiting weeds germination and establishment, thereby creating favorable soil environment for plant growth (Sawanton et al. 2000). Soybean is a miracle crop which is mainly grown for oil and is a good source of protein, used in cattle feeds. Weed infestation in soybean results in a loss of yields to the extent of 30-80 per cent (Yaduraju et al. 2002). Hence, an experiment was conducted to identify ideal method of weed management in soybean-wheat cropping system.

Email

asjadhav31@rediffmail.com

Address

Weed Science Research Center, VN Marathwada Krishi Vidyapeeth, Parbhani, Maharashtra 431 402
Weed control in onion with herbicides
B.T. Sinare, R.P. Andhale and M. Gautam
Short communications | DOI: 2014-46-2-23 | Volume: 46 Page No:192-194 |
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Abstract:

A field experiment was conducted at PGI farm, M.P.K.V., Rahuri during Kharif, 2012. The experiment was laid out in randomized block design with three replications and nine treatments consisted of different weed control treatments, viz. weed free, weedy check (control), pendimethalin 1.0 kg/ha (PE) fb 1 HW at 45 DAT, oxyfluorfen 0.150 kg/ha (PE) fb 1 HW at 45 DAT, quizalofop-ethyl 0.05 kg/ha at 21 DAT (POE) fb 1 HW at 45 DAT, pendimethalin 1.0 kg/ha(PE) fb oxyfluorfen 0.25 kg/ha at 45 DAT (POE), pendimethalin 1.0 kg/ha(PE) fb quizalofop-ethyl 0.05 kg/haat 45 DAT  (POE), pendimethalin 1.0 kg/ha(PE) fb quizalofop-ethyl 0.037 kg/ha+ oxyfluorfen 0.18 kg/haat 45 DAT (POE), quizalofop-ethyl 0.037 kg/ha+ oxyfluorfen 0.18 kg/haat 21 DAT (POE) fb 1 HW at 45 DAT. The onion, cv. ‘Baswant-780’, was transplanted on ridges and furrow. The lowest weed population, weed biomass, weed index and higher weed control efficiency were recorded in weed free check and were at par with application of quizalofop-ethyl 0.037 kg/ha+ oxyfluorfen 0.18 kg/ha at 21 DAT (POE) fb 1 HW at 45 DAT which was followed by spraying of pendimethalin1.0 kg/ha (PE)  fb quizalofop-ethyl  0.037 kg/ha + oxyfluorfen 0.18 kg/ha at 45 DAT. Pendimethalin1.0  kg/ha (PE) fb quizalofop-ethyl 0.037 kg/ha + oxyfluorfen 0.18 kg/ha at 45 DAT proved to be the most remunerative weed control treatment, which recorded the highest benefit: cost ratio (3.48). However, the highest net monetary returns (` 1,67,839/ha) was recorded quizalofop-ethyl 0.037 kg/ha + oxyfluorfen 0.18 kg/ha at 21 DAT (POE) fb1 HW 45 DAT with benefit:cost ratio of 3.39.

Email

sinare_babasaheb@rediffmail.com

Address

Mahatma Phule Krishi Vidyapeeth, Rahuri, Ahmednagar, Maharashtra 413 722
Integrated weed management in sweet corn
V.K. Dobariya, R.K. Mathukia, B.S. Gohil and S.K. Chhodavadia
Short communications | DOI: 2014-46-2-24 | Volume: 46 Page No:195-196 |
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Abstract:

Sweet corn (Zea mays L. var. Saccharata Sturt), is a variety of maize with a high sugar content. It is  also called Indian corn, sugar corn and pole corn. Nature of weed problem in Rabi maize is quite different from that of the rainy season maize. In the rainy season, emergence of maize and weed start simultaneously in which first 20-30 days are most critical looking to crop-weed competition while in winter maize, weeds emerge most often after the first irrigation. However, wider row spacing and liberal use of irrigation and fertilizers lead to more growth of weeds (Porwal  2000). Therefore, the study was carried out to find economically effective method of weed control for realizing higher productivity and profitability of sweet corn.

Email

sunilchhodavadia@gmail.com

Address

College of Agriculture, Junagadh Agricultural University, Junagadh, Gujarat 362 001
Production potential of fenugreek as influenced by weed management practices
Narendra Singh, S.L. Mundra and M.K. Kaushik
Short communications | DOI: 2014-46-2-25 | Volume: 46 Page No:197-199 |
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Abstract:

Fenugreek is one of the most important condiment crops of country in general and Rajasthan in particular. The state contributes the major share of India’s production, accounting for almost 80%. The state accounts for 82.35 thousand ha area with production of 87.38 thousand tones and the productivity of 1.06 t/ha (National Horticultural Board 2011-12). It is a winter season crop having multiple uses and its every part is consumed in one or the other form. The crop is used as a spice, as a vegetable for human consumption, as forage for cattle and to some extent for medicinal purposes.Weeds have been identified as a serious drawback in achieving its potential yield. Weeds reduce grain yield of this crop upto an extent of 86% (Tripathi and Singh 2008). Scarcity of labour and their increasing wages compel the farmers to opt the alternative of manual weeding. Therefore, the present investigation was under taken to find out the most effective weed management practice in fenugreek.

Email

nsuryavanshi5@gmail.com

Address

Rajasthan College of Agriculture, Maharana Pratap University of Agriculture & Technology, Udaipur, Rajasthan 313 001
Persistence of oxyfluorfen in acid soil and tea leaves
P. Janaki, C. Chinnusamy and B. Jaya Kumar
Short communications | DOI: 2014-46-2-26 | Volume: 46 Page No:200-202 |
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Abstract:

The present study was undertaken to determine the persistence and residue of oxyfluorfen in tea and sandy clay loam acid soil with a pH of 4.3 and organic carbon content of 4.1%. Results showed that, the application of oxyfluorfen at 200 g /ha persisted in soil up to 10 days while up to 25 days at 400 g/ha and 50 per cent degraded from the soil before 30 days. Within 3 hrs of application, 6.9 to 35.8% of the oxyfluorfen dissipated from the soil. More than 80% of the applied oxyfluorfen degraded from soil before 10 days of its application under 200 g/ha, while it took 25 days at 400 g/ha. Oxyfluorfen residue was not detected in tea leaves upto 50 days. It is concluded that the waiting period of 75 days should be implemented for plucking the tea leaves after the application of oxyfluorfen or else there will be a chances for the herbicide to enter the food chain due to bioma-gnification.

Email

janakibalamurugan@rediffmail.com

Address

Department of Agronomy, Tamil Nadu Agricultural University, Coimbatore, Tamil Nadu 641 003
Enhancing glyphosate translocation by 2,4-D to control purple nutsedge
R. Devendra
Short communications | DOI: 2014-46-2-27 | Volume: 46 Page No:203-204 |
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Abstract:

Lack of glyphosate translocation to the site of action (growing apex) is the limitation for effective control of purple nutsedge (Cyperus rotundus L). Glyphosate is used for weed control in wasteland, zero tillage, directed spray in plantation crops and on quarantine weeds. Senescence of leaf is programmed cell death involving degradation of macromolecules viz. proteins, nucleic acids and lipids and during later stage of this process, essential nutrients are remobilizes to the growing apex. Pre-treatment with ethephon (5000 ppm) induced the leaf senescence and reduced callose accumulation in phloem which enhanced 2,4-D and glyphosate translocation and thus their efficacies (Devendra et al. 1996). Senescence period of 48 h, induced by glyphosate (1.3 kg/ha) enhanced the efficacy more than 24 or 72 h senescence period (Dhanraj et al. 2012). Senescence was found to increase the activity of low affinity (Pht 2,1) phosphate transporter (Daram et al. 1999) and high affinity (PhPT1) phosphate transporter (Chapin and Jones 2009). Glyphosate being phosphate having molecule, compete with phosphate with transporter which led to enhanced phloem mobility.

Email

devendra.wc.uasb@gmail.com

Address

University of Agricultural Sciences, Hebbal, Bangalore, Karnataka 560 024

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