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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- 52 | Issue-3 (Jul-Sep) | Year 2020

Parthenium weed spread in Andaman & Nicobar and Lakshadweep Islands of India: Lurking invasion needs attention for its eradication
B. Gangaiah, T. Subramani, Sanjeev Kumar Singh, A.K.O. Ratheesh and Sushilkumar
Review article | DOI: http://dx.doi.org/10.5958/0974-8164.2020.00038.6 | Volume: 52 Page No:200-203 |
Address & Email | Article preview | View PFD | Download

Abstract:

Parthenium (Parthenium hysterophorus L.) has traversed the oceans to reach Andaman & Nicobar and Lakshadweep Islands of India in early 21st century, nearly half a century after its first report in Maharashtra state in 1955. Its entry might be on account of contaminated movement of food grains and other materials with Parthenium seeds from mainland through ships and airplanes. The weed has established in wastelands and community lands in some of the islands, hence there is lurking threat of its further invasion in other islands and into croplands. Public were less aware of its harmful effects due its new occurrence in the region. Competitive plant Senna tora was noticed in the islands during survey, and was recommended for Parthenium management on the road side. Physical removal was done involving people participation and was recommended for its management due to ban on using of chemicals. Bioagent Zygogramma bicolorata was not found in Andaman & Nicobar Islands in spite of its introduction in 2005 and 2006 for its biological control.

Email

bandlagangaiah1167@gmail.com

Address

Division of Natural Resource Management, ICAR-Central Island Agricultural Research Institute, Port Blair, Andaman and Nicobar Islands 744 105, India
Diversity is the key for successful agroecological weed management
Stéphane Cordeau, Guillaume Adeux and Violaine Deytieux
Review article | DOI: http://dx.doi.org/10.5958/0974-8164.2020.00039.8 | Volume: 52 Page No:204-210 |
Address & Email | Article preview | View PFD | Download

Abstract:

Reconciling crop productivity and biodiversity maintenance is one of the main challenges of agriculture worldwide. Weed management is recognized to be a key point for ecological intensification in agriculture because weeds can generate severe yield losses but also represent the base of agricultural trophic networks. Research in weed science has often opposed two different perceptions of weeds. Low within-field weed diversity and abundance has either been considered as a sign of efficient weed management or an erosion of the agroecosystem services provided by weeds. However, a recent study in grain-based systems in France highlighted the potential benefits of weed diversity in mitigating crop yield losses. Major yield losses may simply arise from the dominance of a few competitive species. A higher diversity of traits (characteristics) within the weed community should induce complementarity in resource use (light, water, nitrogen etc.) and alleviate weed:crop competition. Thus, weed scientists should try to confirm this relationship in different production situations (e.g. floristic contexts, pedoclimates, cropping systems) and then identify cropping systems which promote weed evenness, either from a taxonomic or functional point of view. Weeding operations should exclusively target competitive and dominant species. However, current weed control practices do not allow to target a specific species in a complex community. Therefore, future studies need to identify if weed diversity could rather be indirectly promoted by diversifying weed management tools, which ought to limit weed density/biomass. The CA-SYS platform (INRAE, Dijon, France) is a unique site in Europe to experiment biodiversity-based forms of agriculture, including a diversity of weed management strategies. The overarching objective of the CA-SYS platform is to design and test the feasibility and performances of pesticide-free agriculture which resorts to (cropped and wild) biodiversity in support of production.

Email

stephane.cordeau@inrae.fr

Address

Agroécologie, AgroSup Dijon, INRAE, University Bourgogne, University Bourgogne Franche-Comté, F-21000 Dijon, France
Herbicides and herbicide combinations for management of Leptochloa chinensis in wet-seeded rice
Lekshmi Sekhar, M. Ameena and Nimmy Jose
Research article | DOI: http://dx.doi.org/10.5958/0974-8164.2020.00040.4 | Volume: 52 Page No:211-216 |
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Abstract:

An experiment was conducted to evaluate the efficiency of various herbicides for the management of chinese sprangletop (Leptochloa chinensis) at Integrated Farming System Research Station, Karamana, Thiruvananthapuram of Kerala Agricultural University, India during Kharif (rainy season) 2018 and 2019. Grass weeds were the most dominant weed species followed by broad-leaf weeds and sedges during both the crop seasons. The present study revealed that fenoxaprop-p-ethyl at 60 g/ha was the most effective herbicide against L. chinensis followed by cyhalofop-butyl at 80 g/ha. Dry matter production of L. chinensis was lower in sole application of fenoxaprop-p-ethyl at 60 g/ha and cyhalofop-butyl at 80 g/ha compared to their tank mix combination with bispyribac-sodium at 25 g/ha during both the years. Ready-mix combination of penoxsulam + cyhalofop-butyl (6% OD) at 150 g/ha was very effective in managing the complex spectrum of weeds however, it was not effective in managing L. chinensis compared to other herbicidal treatments. Application of bispyribac-sodium alone at 25 g/ha was not effective in controlling L. chinensis resulted in lower weed control efficiency of 37 and 48% during 2018 and 2019, respectively. Tank mix application of bispyribac-sodium with fenoxaprop-p-ethyl (at 25 + 60 g/ha) or cyhalofop-butyl (at 25 + 80 g/ha) recorded the least total dry matter production of weeds. All the tested herbicides and the herbicide combinations increased the grain yield compared to unweeded control during both the years.

Email

lekshmisekhar1@gmail.com

Address

Department of Agronomy, College of Agriculture, Vellayani, Thiruvananthapuram, Kerala 695522, India
Crop establishment and weed management effect on weed parameters and rice yield under temperate zone of Kashmir
Aijaz Nazir, M. Anwar Bhat, Tauseef A. Bhat, Zahida Rashid, Rehana Mohi-ud-din, Suhail Fayaz and Sheraz Ahmad Wani
Research article | DOI: http://dx.doi.org/10.5958/0974-8164.2020.00041.6 | Volume: 52 Page No:217-221 |
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Abstract:

A field experiment was conducted during Kharif (rainy) seasons of 2017 and 2018 at Sher-e-Kashmir University of Agricultural Sciences and Technology of Kashmir, Wadura, Jammu and Kashmir. The treatments comprised of three crop establishment methods, viz. transplanting, direct seeding (DSR), System of Rice Intensification (SRI) in main plots and seven weed management practices, viz. butachlor (1500 g/ha), penoxsulam (22.5g/ha), pyrazosulfuron-ethyl + pretilachlor (15 and 600g/ha), bensulfuron methyl + pretilachlor (60 and 600         g/ha), twice conoweeding/hand weeding, weed free and weedy check in sub-plots replicated thrice in a split plot design. The results revealed that significantly lowest weed density and weed dry weight were recorded with transplanted method as compared to SRI and DSR. Application of penoxsulam 22.5 g/ha recorded significantly the lowest weed population and weed dry matter depicting higher weed control efficiency. SRI had resulted in significantly higher yields over DSR and transplanted rice. Penoxsulam (22.5      g/ha) produced significantly higher grain and straw yields. SRI proved to be better method of crop establishment than transplanting and DSR whereas, application of penoxsulam 22.5 g/ha proved superior to other herbicide treatments used.

Email

magreyaijaz357@gmail.com

Address

Sher-e-Kashmir University of Agricultural sciences and Technology of Kashmir, Sopore, Jammu & Kashmir 193201, India
Efficacy of herbicides in managing weeds in direct-seeded rice
R.K. Satyaraj Guru*, Sanjay K. Dwivedi, S.N. Khajanji and S.K. Jha
Research article | DOI: http://dx.doi.org/10.5958/0974-8164.2020.00042.8 | Volume: 52 Page No:222-226 |
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Abstract:

A field experiment was conducted during Kharif 2017 and 2018 at I.G.K.V, Raipur, Chhattisgarh to study the effect of existing herbicides in managing weeds in direct-seeded rice (Oryza sativa L.) and to assess their residual effect on succeeding crops. Application of bispyribac-sodium 2% (BS) + 2,4-D sodium salt 54.3% SP (DSS) with adjuvant (WA) (30.0 + 814.5 g/ha), BS + 2,4-DSS (WA) (25.0 + 678.75 g/ha), BS+ 2,4-DSS (30.0 + 814.5 g/ha) and BS + 2,4-DSS (WA) (20.0 + 543.0 g/ha) was at par to weed free in terms of grain yield. BS + 2,4- DSS (WA) (30.0 + 814.5 g/ha) controlled the weeds more effectively throughout the crop growth period and recorded higher weed control efficiency (97.5% at 30 DAS and 92.4% at 60 DAS), herbicide efficiency index (47.1 and 13.2), reduction of weed density (88.1 and 80.6%) and weed biomass (97.5 and 92.4%) and lower weed persistence index (0.2 and 0.4) during both the years. The phytotoxicity effect was observed with higher doses of BS + 2,4-DSS, alone and with adjuvant at 25.0 + 678.8 g/ha and 30.0 + 814.5 g/ha, however it was recovered quickly. There was no phytotoxicity and carryover effect of these herbicides tested on chickpea + linseed intercrop, grown as succeeding crop. Application of BS + 2,4-DSS (WA) (30.0 + 814.5 g/ha) recorded highest net returns ( 65444 and 76762/ha) and B:C ratio (2.2 and 2.6) during 2017 and 2018, respectively

Email

rksatyaraj34@gmail.com

Address

Department of Agronomy, Indira Gandhi Krishi Vishwavidyalaya, Raipur Chhattisgarh 492 012, India
Efficacy of pyribenzoxim herbicide in dry direct-seeded rice
Rajul Soni, Triptesh Mondal1*, Shobha Sondhia2, Rajendra Prasad Sahu and Hradesh Patel
Research article | DOI: http://dx.doi.org/10.5958/0974-8164.2020.00043.X | Volume: 52 Page No:227-231 |
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Abstract:

A study was conducted at Jawaharlal Nehru Krishi Vishwa Vidyalaya, Jabalpur, Madhya Pradesh during Kharif 2017 and 2018 to evaluate the efficacy of pyribenzoxim herbicide in dry direct-seeded rice. Among the herbicidal treatments, pyribenzoxim 5% EC 60 g/ha was the most suitable for controlling weeds, followed by oxadiargyl 80% WP 100 g/ha, though hand weeding treatment showed lowest weed infestation and maximum grain yield (4.55 t/ha). Weed density and weed dry weight had strong negative correlation with grain yield (r = -0.982** and -0.983**, respectively). Total weed population and biomass was the lowest in manually weeded plots followed by pyribenzoxim 5% EC 60     g/ha. The highest weed control efficiency (70.0, 86.7 and 88.3% at 30, 45 and 60 DAS, respectively), weed control index (82.9, 85.5 and 86.4% at 30, 45 and 60 DAS, respectively) and herbicide efficiency index (43.4%) were found with pyribenzoxim 5% EC 60 g/ha. The pyribenzoxim 5% EC 60 g/ha at 15 DAS was found the most remunerative with benefit-cost ratio of 2.42.

Email

mtriptesh@gmail.com

Address

Department of Agronomy, College of Agriculture, Jawaharlal Nehru Krishi Vishwa Vidyalaya, Jabalpur, Madhya Pradesh 482 004, India
Assessing bio-efficacy potential of herbicide combinations for broad-spectrum weed control in late-sown wheat
Vasudev Meena, M.K. Kaushik, M.L. Dotaniya and H. Das
Research article | DOI: http://dx.doi.org/10.5958/0974-8164. | Volume: 52 Page No:232-236 |
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Abstract:

A field experiment was conducted during 2015-16 and 2016-17 at Rajasthan College of Agriculture, Udaipur, India with the objective to assess bio-efficacy potential of the ready-mix herbicides against complex weed flora in wheat. The experiment consisting of fifteen treatments, was laid out in a randomized block design with four replications. The results indicated significant reduction in population and growth of weeds by ready-mix application of sulfosulfuron + metsulfuron (32.0 g/ha) and mesosulfuron + iodosulfuron (14.4 g/ha) followed by clodinafop + metsulfuron (64.0 g/ha), pinoxaden + metsulfuron (64.0 g/ha) over other weed control treatments. However, two hand weeding (30 and 45 DAS) registered maximum decline in density and dry biomass of all the weeds. Moreover, herbicides combination sulfosulfuron + metsulfuron and mesosulfuron + iodosulfuron attributed to greater value of weed control index (WCI) with maximum reduction of weed density and dry biomass. At 60 DAS, the array of WCI ranged from 9.19 to 95.01 and 57.48 to 97.01% for monocots and dicots, respectively and resulted into higher grain yield (34.3 and 20.5% more), net returns (49.1 and 47.7% more) and B-C ratio (2.34 and 2.32) over the unweeded control. The study concluded that the use of sulfosulfuron + metsulfuron (32.0 g/ha) and mesosulfuron + iodosulfuron (14.4 g/ha) as post-emergence at 5 WAS provided efficacious control of all sorts of weeds in wheat with higher yield and net returns.

Email

vasu_maheshin84@rediffmail.com

Address

ICAR-Indian Institute of Soil Science, Bhopal, Madhya Pradesh 462 038, India
Management of herbicide resistant Phalaris minor in wheat
S.S. Punia*, Jitender Soni, Manjeet, Sushil Kumar Singh and Paras Kamboj
Research article | DOI: http://dx.doi.org10.5958/0974-8164.2020.00045.3 | Volume: 52 Page No:237-240 |
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Abstract:

Field experiment was conducted at CCS Haryana Agricultural University during Rabi 206-17 and 2017-18 to evaluate bio-efficacy of different herbicides and their combination against cross resistant P. minor in wheat, and to study the phytotoxic effects on the crop, if any. The treatments included application pre-emergence herbicides pendimethalin 1500 g/ha and its mixture with metribuzin 175 g/ha alone, pendimethalin + pyroxasulfone  Tank mix (TM) at 1500 + 102 g/ha alone and their sequential application with post-emergence herbicides application (PoE) of mesosulfuron + iodosulfuron ready mix (RM) 14.4 g/ha and pinoxaden 60 g/ha along with weedy check treatment. The minimum density of P. minor, weed biomass and the highest wheat grain yield was observed with pendimethalin + pyroxasulfone TM fb mesosulfuron+ iodosulfuron RM (1500 + 102 fb 14.4 g/ha). All the herbicides significantly reduced the weed biomass as compared with the control but maximum reduction in the weed biomass was achieved with pendimethalin + pyroxasulfone TM fb mesosulfuron+ iodosulfuron RM. Pinoxaden at 60 g/ha did not control Rumex dentatus and Chenopodium album. Only pre-emergence application of metribuzin, pendimethalin + metribuzin (before sowing), pinoxaden + metribuzin TM caused toxicity of up to 5% at 10 days after treatment (DAT). The wheat recovered from toxicity by 20 DAT without any yield penalty. On-farm demonstrations of pyroxasulfone at 127.5 g/ha PE in Haryana revealed 88.3 % control of multiple herbicide resistant P. minor. Its integration with pendimethalin at 1.5 kg/ha (PE) and post-emergence herbicides at 35 DAS has improved control of P. minor to 92.1%.

Email

puniasatbir@gmail.com

Address

Department of Agronomy, CCS Haryana Agricultural University, Hisar, Haryana 125 004, India
Effect of nitrogen levels and weed control methods on yield and economics of wheat under zero-tillage conditions
Manoj Kumar, Ram Pratap Singh, Deepak Pandey and Gajendra Singh
Research article | DOI: http://dx.doi.org/10.5958/0974-8164.2020.00046.5 | Volume: 52 Page No:241-244 |
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Abstract:

A field experiment was conducted during Rabi seasons of 2015-16 and 2016-17 to study the effect of nitrogen and weed control on wheat yield, nitrogen uptake and economics of wheat. The treatments comprised of 4 levels of nitrogen, viz. 90, 120, 150 and 180 kg/ha, and 5 weed control methods, viz. weedy check, hand weedings at 30 and 60 days after seeding (DAS), clodinafop + metsulfuron (60 + 4 g/ha), fenoxaprop + metsulfuron (120 + 4 g/ha) and sulfosulfuron + metsulfuron (25 + 4 g/ha). Weed density was reduced with increased rate of nitrogen from 90 to 180 kg/ha. Crop fertilized with180 kg N/ha was at par with 150 kg N/ha but produced significantly higher weeds biomass than the rest of the nitrogen levels. The uptake of nitrogen by weeds was significantly higher with 180 kg/ha than the other N-levels. Post-emergence spray of clodinafop + metsulfuron (60 + 4 g/ha) recorded significantly the lowest weed population followed by sulfosulfuron + metsulfuron (25 + 4 g/ha) and fenoxaprop + metsulfuron (120 + 4 g/ha). Hand weeding twice (30 and 60 DAS) recorded the significantly lowest weeds biomass, followed by clodinafop + metsulfuron (60 + 4 g/ha). Weedy check recorded significantly maximum amount of nitrogen uptake by weeds. Nitrogen applied at 180 kg/ha recorded the highest wheat grain yield (3.82 and 3.98 t/ha), crop nitrogen uptake (96.81 and 99.69 kg/ha), gross returns ( 73700/ha), net returns ( 49600/ha) and B:C ratio (2.06).

Email

manojbu123@gmail.com

Address

Krishi Vigyan Kendra,Ganiwan, Chitrakoot Utter Padesh210206, India
Effect of organic weed management practices on weed control and yield of soybean-gram cropping system under irrigated condition
A.A. Chavan*, W.N. Narkhede and A.S. Karle
Research article | DOI: http://dx.doi.org/10.5958/0974-8164.2020.00047.7 | Volume: 52 Page No:245-249 |
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Abstract:

The significantly lower weed density and biomass, at 40 days after seeding (DAS) was recorded in weed free plots followed by soil solarization with 25 μ polythene mulch during summer + one hand weeding at 25 DAS in soybean and gram during both the years. Among the weed management practices, combination of stale seedbed + reduced spacing + mulching with wheat straw (2 t/ha) + one HW at 25 DAS recorded higher soybean equivalent yield. Higher net returns and benefit: cost ratio was observed in soybean + sun hemp incorporation after 35-40 DAS in Kharif and gram + safflower (2:1) intercropping in Rabi season, followed by stale seedbed + reduced spacing + mulching with wheat straw (2 t/ha) + one HW at 25 DAS. Application of two hand weeding (20-25 and 45-50 DAS) recorded higher values of yield attributes.

Email

ashachavan1992@gmail.com

Address

Department of Agronomy, College of Agriculture, Vasantrao Naik Marathwada Krishi Vidyapeeth, Parbhani, Maharashtra 431 402, India
Effectiveness of herbicide mixture on weeds and yield of summer groundnut
B.D. Patel*, D.D. Chaudhari, V.B. Mor, V.J. Patel, and H.K. Patel
Research article | DOI: http://dx.doi.org/10.5958/0974-8164.2020.00048.9 | Volume: 52 Page No:250-253 |
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Abstract:

A field experiment was conducted during two consecutive summer season of 2018 and 2019 in loamy sand soil at  B. A. College of Agriculture, Anand Agricultural University, Anand to study the effect of integrated weed management in summer groundnut. Results indicated that pre-emergence application of oxyfluorfen 180 g/ha PE fb interculturing (IC) + hand weeding (HW) at 40 DAS found to be effective for controlling weeds, and higher pod yield (3.99 t/ha) of groundnut, followed by oxyfluorfen 180 g/ha PE fb imazethapyr 100 g/ha PoE, IC fb HW at 20 and 40 DAS, oxyfluorfen 180 g/ha PE fb imazethapyr + imazamox 70 g/ha PoE (pre-mix) and fluazifop-p-butyl  + fomesafen 250 g/ha ePoE (pre-mix) fb IC + HW at 40 DAS.

Email

bdpatel62@yahoo.com

Address

B.A. College of Agriculture, Anand Agricultural University, Anand, Gujarat 388 110, India
Weed flora dynamics and yield of mustard as influenced by tillage and weed management in pearlmillet-mustard-cowpea cropping system
Varsha Gupta, D.S. Sasode, Ekta Joshi, Sushma Tiwari and Y.K. Singh
Research article | DOI: http://dx.doi.org/10.5958/0974-8164.2020.00049.0 | Volume: 52 Page No:254-258 |
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Abstract:

The effects of tillage and weed management practices were evaluated for four years (2014-15 to 2017-18) in pearlmillet-mustard-cowpea cropping system. The results revealed that conventional tillage during Kharif (rainy) and Rabi (winter) seasons and zero tillage with previous crop residue application significantly increased the grain yield by 36 and 15% and reduced the total weed biomass by 57 and 26%, respectively compared to zero tillage without residue application. Among different weed flora, conventional tillage during Kharif and Rabi season fb the zero tillage with previous crop residue reduced the population of P. minor by 24.6 and 16%, C. arvensis and M. hispida by 50 and 29% and C. rotundus  by 42 and 10% with weed control efficiency of 79 and 65%, respectively at 60 DAS over zero tillage without residue application. However, among different weed management practices, the pre-emergence application of oxyfluorfen 0.23 kg/ha with one hand weeding at 30-35 DAS resulted in significant reduction of total weed biomass, highest grain yield, weed control efficiency and net returns. The integrated weed management approach reduced the narrow-leaved weeds by 75%, broad-leaved weeds by 86% and sedges by 90% as compared to the weedy check.

Email

drvarshagupta11@gmail.com

Address

Rajmata Vijyaraje Scindia Krishi Vishva Vidyalaya, Gwalior, Madhya Pradesh 474 002, India
Herbicide resistance in Rumex dentatus against metsulfuron herbicide in Punjab and Haryana, India
Sachin Dhanda, Ankur Chaudhary, Simerjeet Kaur and Makhan S. Bhullar
Research article | DOI: http://dx.doi.org/10.5958/0974-8164.2020.00050.7 | Volume: 52 Page No:259-264 |
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Abstract:

Over-reliance and continuous use of similar mode of herbicides lead to increase in selection pressure which resulted in evolution of herbicide resistance in weeds. Metsulfuron-methyl is used for the control of broad-leaf weeds in wheat since 1990s. There are reports of failure of control of Rumex dentatus with metsulfuron from farmers’ fields in North-Western India. Pot studies were conducted at Punjab Agricultural University, Ludhiana during winter (Rabi) 2018-19 and 2019-20 to quantify the status and level of herbicide resistance in R. dentatus in Punjab and Haryana. Rumex populations were collected from farmers’ fields in both years. Fifty six and 33 biotypes of R. dentatus from farmers’ fields of Haryana and 6 and 19 biotypes from Punjab were collected in first and second year, respectively. Biotypes were screened using recommended dose of metsulfuron-methyl (5 g/ha) along with unsprayed in pot study. Results revealed that 38 out of 56 biotypes of R. dentatus collected from Haryana in first year were found resistant to metsulfuron whereas only one biotype showed resistance from Punjab. Further, 23 biotypes out of 33 biotypes collected in second year were found resistant from Haryana whereas 14 biotypes out of 19 were found resistant in Punjab. This indicated that R. dentatus has evolved resistance against metsulfuron-methyl in different regions of Punjab and Haryana.

Email

sachin-agr@pau.edu

Address

Department of Agronomy, Punjab Agricultural University, Ludhiana, Punjab 141 004, India
Evaluation of multiple herbicide resistance in littleseed canarygrass (Phalaris minor) populations from Haryana in India
Maninder Kaur*, Satbir Singh Punia, Jagdev Singh and Samunder Singh
Research article | DOI: http://dx.doi.org/10.5958/0974-8164.2020.00051.9 | Volume: 52 Page No:265-269 |
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Abstract:

Phalaris minor is seriously affecting wheat productivity and profitability in Haryana. The menace of P. minor has worsened after it evolved resistance to herbicides. For rational recommendation and implementation of management strategies, it is imperative to assess and quantify the level of resistance in P. minor populations. In dose-response assay, it was found that P. minor populations ‘Naggal’ and ‘Kalvehri’ exhibited multiple resistance to herbicides from different chemical families. ‘Naggal’ was 13-, 18-, 26- and 22-fold resistant to clodinafop, pinoxaden, sulfosulfuron and mesosulfuron + iodosulfuron, respectively and ‘Kalvehri’ was 15-, 29- and 16-fold resistant to pinoxaden, sulfosulfuron and mesosulfuron + iodosulfuron, respectively. All tested populations were resistant to ACCase inhibitors with more number of populations being highly resistant to clodinafop than pinoxaden. However, majority of the populations were susceptible to ALS inhibitors particularly mesosulfuron + iodosulfuron. The evolution of multiple herbicide resistance in P. minor is a big challenge for scientists and farmers alike.

Email

maninder.sindhu@yahoo.com

Address

Department of Agronomy, CCS Haryana Agricultural University, Hisar 125004, India
Physiological response of rice to herbicide application
C. Linu* and T. Girija
Research note | DOI: http://dx.doi.org/10.5958/0974-8164.2020.00052.0 | Volume: 52 Page No:270-275 |
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Abstract:

The experiment was conducted at Agricultural Research Station, Mannuthy in the year 2018 with the rice variety ‘Jyothi’. The experiment was laid out in RBD with three replications. Treatments included recommended and double the recommended doses of 2,4-D, metsulfuron-methyl + chlorimuron-ethyl and penoxsualm and two controls (hand weeded and unweeded). Herbicides were sprayed at 20 days after sowing (DAS). Biochemical parameters were estimated at one week after herbicidal application and at the time of flowering. Biochemical parameters such as soluble protein, total amino acid and nitrate reductase enzyme activity showed a decline in herbicide treatments compared to hand weeded control. Proline content and catalase enzyme activity showed an increase with herbicide application while other physiological parameters like Indole acetic acid (IAA) content, chlorophyll content, stomatal conductance and net photosynthesis showed a decline. Double the recommended dose of herbicides affected these parameters more adversely as compared to the recommended dose of herbicides. Even though double the recommended dose of herbicide exhibited higher weed control efficiency, it reduced the yield of rice plant.

Email

linu797@gmail.com

Address

College of Horticulture, Vellanikkara, KAU P.O, Thrissur, Kerala 680 656, India
Integrated weed management with brown manuring and herbicides in dry-seeded rice
Sneha Kumari*, Tarundeep Kaur and Makhan S. Bhullar
Research note | DOI: http://dx.doi.org/10.5958/0974-8164.2020.00053.2 | Volume: 52 Page No:276-279 |
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Abstract:

The study was carried out in rainy season in 2015 at Ludhiana, India. Present study evaluated the effect of timing of brown manuring with Sesbania aculeata alone and its integration with herbicides on weed incidence and rice grain yield. Sesbania seed was broadcasted at time of rice sowing and brown manured using 2,4-D at 580 g/ha at 4- and 5-weeks age. BM plots had significantly lower weed density and biomass than without BM (sole rice). BM at 4 weeks was more effective in suppressing weeds than BM at 5 weeks age. Among weed control methods, sequential application of pendimethalin and bispyribac gave best weed control and highest rice grain yield. Combination treatments of BM (4 weeks) with pendimethalin and, sole rice with pendimethalin and bispyribac gave similar rice grain yield. It was concluded that BM has weed control potential equivalent to one post-emergence herbicide, however, for getting the highest rice productivity it must be used in combination with pre- and post-emergence herbicides.

Email

snehak723@gmail.com

Address

Department of Agronomy, Punjab Agricultural University, Ludhiana, Punjab 141 001, India
Biochar and herbicide application effect on weed dynamics and yield of dry direct-seeded rice
Suprava Nath*, V.C. Dhyani, V. Pratap Singh, Sumit Chaturvedi, Subhashisa Praharaj and Arya Kumar Sarvadamana
Research note | DOI: http://dx.doi.org/10.5958/0974-8164.2020.00054.4 | Volume: 52 Page No:280-282 |
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Abstract:

Field experiment was conducted during rainy season (Kharif) 2018 to study the bio-efficacy of pre-emergence herbicides in dry direct-seeded rice. The treatments were weedy check, weed free, pendimethalin applied as pre-emergence at 1.0, 1.5 and 2.0 kg/ha fb post-emergence application of bispyribac-sodium at 0.025 kg/ha with amendment of biochar at 4.0 t/ha and without amendment of biochar. Total weed dry matter accumulation was maximum at 60 DAS. The highest grain yield was obtained in weed free treatment which was 7.38% higher than pendimethalin as pre-emergence at 1.5 kg/ha followed by bispyribac-sodium at 25 g/ha under biochar condition. Recommended dose of pendimethalin (1.0 kg/ha) along with biochar had 7.5% less yield compared to 1.0 kg/ha pendimethalin without biochar amendment. Higher dose of pendimethalin reduced grain, straw and biological yield, setback on yield was more pronounced in non-biochar amended soil. Addition of biochar decreased the B:C compared to without biochar treatments.

Email

supravanath96@gmail.com

Address

G.B. Pant University of Agriculture & Technology, Pantnagar, Uttarakhand 263 145, India
Crop-weed competition in blackgram in coastal deltaic eco-system
P. Saravanane*, R. Poonguzhalan, S. Vijayakumar1 and K. Pooja
Research note | DOI: http://dx.doi.org/10.5958/0974-8164.2020.00055.6 | Volume: 52 Page No:283-285 |
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Abstract:

A field experiment was carried out at Pandit Jawaharlal Nehru College of Agriculture and Research Institute, Karaikal, U.T. of Puducherry, India during rainy season (Kharif) of 2019 with ten treatments replicated thrice in a randomized block design to study the critical period of crop-weed competition in irrigated blackgram in deltaic coastal ecosystem. The weed spectrum comprised of Echinochloa colona (L), Dactyloctenium aegyptium (L.), Trianthema portulacastrum (L.), Cleome viscosa (L.), Eclipta prostrata (L.) and Cyperus rotundus (L.). The density and dry weight of weeds significantly increased when crop-weed competition was prolonged from 15 days after sowing (DAS) to the maturity of the crop. The highest seed yield (706.5 kg/ in coastaha) was obtained when blackgram was maintained weed free till harvest closely followed by weed free till 60 DAS (652.1 kg/ha) and weedy condition till 15 DAS (608.6 kg/ha). The critical period of crop-weed competition was found to be 17 to 50 DAS. Weedy condition upto 15, 30, 45, 60 DAS and throughout crop growth resulted in a yield loss of 9.66, 39.19, 59.13, 75.87 and 86.30%, respectively.

Email

psaravanane@rediffmail.com

Address

Department of Agronomy, Pandit Jawaharlal Nehru College of Agriculture & Research Institute, Karaikal, Puducherry U.T. 609 603, India
Management of Trianthema portulacastrum through herbicides in greengram
T. Ramesh* and S. Rathika
Research note | DOI: http://dx.doi.org/10.5958/0974-8164.2020.00056.8 | Volume: 52 Page No:286-289 |
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Abstract:

Field experiments were conducted to select suitable pre- and post-emergence herbicides for the control of Trianthema portulacastrum in greengram. Treatments were consisted of pre-emergence (PE) herbicides, viz. pendimethalin (1.0 kg/ha), oxyfluorfen (100 and 200 g/ha) with one hand weeding at 30 days after sowing (DAS), post-emergence (PoE) imazethapyr 50 g/ha at 15 DAS, combinations of PE and PoE herbicides and hand weeding (HW) twice at 15 and 30 DAS and control. Significantly lesser weed density (137/m2) and dry weight (30.4 g/m2) and higher weed control efficiency (89.6%) were recorded with application of pendimethalin 1.0 kg/ha at 3 DAS + imazethapyr 50 g/ha at 30 DAS than other treatments at 45 DAS. Significantly higher dry matter production (1.34 t/ha), more number of pods per plant (38.4) and seeds per pod (9.8) were recorded with application of pendimethalin1.0       kg/ha + imazethapyr 50 g/ha 30 DAS than other treatments. Application of pendimethalin 1.0 kg/ha on 3 DAS followed by imazethapyr 50 g/ha on 30 DAS recorded significantly higher mean grain yield of 461 kg/ha, mean net returns (  14443/ha) and benefit cost ratio (2.09) over other treatments. Thus, it could be concluded that application of PE herbicide pendimethalin 1.0 kg/ha on 3 DAS followed by PoE herbicide imazethapyr 50g/ha on 30 DAS controlled the Trianthema portulacastrum effectively and produced higher productivity and profitability of greengram in irrigated condition.

Email

agronramesh@gmail.com

Address

Department of Agronomy, Anbil Dharmalingam Agricultural College and Research Institute, Tamil Nadu Agricultural University, Tiruchirappalli, Tamil Nadu 620 009, India
Integrated weed management in blackgram
R.P.S. Shaktawat
Research note | DOI: http://dx.doi.org/10.5958/0974-8164.2020.00057.X | Volume: 52 Page No:290-291 |
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Abstract:

An on farm testing (OFT) was conducted in the farmer’s field of Daloda Rail village, Mandsaur district, Madhya Pradesh in kharif season of 2014, 2015 and 2016 to assess the effect of integrated weed management treatments on weed management and yield of blackgram (Vigna mungo L.). Application of imazethapyr 75 g/ha at 18 days after seeding (DAS) and hand weeding at 40 DAS gave 36.91% mean higher blackgram grain yield as compare to farmer’s practice (0.88 t/ha). Further, this treatment also resulted in significantly higher blackgram plant height, pods/plant, net return and B:C ratio as compared to all other tested treatments and significantly reduced the weed density and biomass as recorded at 45 DAS as compared to all other treatments tested.

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rpssbkn@yahoo.co.in

Address

Krishi Vigyan Kendra, Agar Malwa, Madhya Pradesh 465 441, India
Effect of plant extracts and rice straw mulch on weed growth and yield of groundnut
N. Sai Geethika, D. Subramanyam*, S. Tirumala Reddy and V. Umamahesh
Research note | DOI: http://dx.doi.org/10.5958/0974-8164.2020.00058.1 | Volume: 52 Page No:292-295 |
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Abstract:

Sorghum (NJ-2647), sunflower (NDSH-1012) and rice (NLR-34449) were grown up to physiological maturity and harvested for preparing plant extracts during Kharif 2017 at Sri Venkateswara Agricultural College, Tirupati, Andhra Pradesh. Plant parts of Parthenium hysterophorus, Lantana camera and Cyperus rotundus were collected from the non-cropped area at flowering. The chopped material of above plants were soaked separately in distilled water for 24 hours at room temperature of 210C at a ratio of 1:10 (w/v) and the same was filtered through 10 and 60 mesh sieve separately. A field experiment was conducted during Rabi 2017-18 in a randomized block design with 10 treatments to evaluate the performance of different plant extracts each applied at 15 L/ha at 15 and 30 DAS and rice straw mulch 5 t/ha for weed management in groundnut. The application of rice straw mulch 5 t/ha was found to be the best followed by sunflower extract spray for obtaining higher pod yield and maximum net returns, besides effective control of weeds in groundnut in view of sustainability and reduce the load of herbicides in the soil, however pre-emergence application of pendimethalin 1.0 kg/ha + HW at 30 DAS produced higher pod yield and net returns.

Email

subbuagro37@gmail.com

Address

Sri Venkateswara Agricultural College, Tirupati, Andhra Pradesh 517 502, India
Integrated weed management impact on soil biological indicators in cowpea
J.K. Sinchana and Sheeja K Raj
Research note | DOI: http://dx.doi.org/10.5958/0974-8164.2020.00059.3 | Volume: 52 Page No:296-299 |
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Abstract:

Impact of integrated weed management practices involving stale seedbed, mulching with dried banana leaves, herbicides, viz. pre-emergence (PE) diclosulam, post-emergence (PoE) quizalofop-p-ethyl and imazethapyr and manual weeding on nodulation in bush cowpea and enzyme activity in soil was studied. Stale seedbed recorded significantly higher number of total nodules per plant. Dehydrogenase enzyme activity was also higher in stale seedbed however, urease enzyme activity did not have any significant effect at 15 and 30 DAS. Treatments with imazethapyr recorded lesser number of total nodules than treatments with diclosulam and quizalofop-p-ethyl. Among the herbicide treatments at 15 DAS, PE diclosulam registered significantly higher urease and dehydrogenase enzyme activity than weedy check and comparable activity with hand weeding treatment. Post-emergence imazethapyr showed a reduction in dehydrogenase and urease enzyme activity at 30 DAS compared to 15 DAS. However, PoE quizalofop-p-ethyl registered higher dehydrogenase and urease enzyme activity at 30 DAS compared to 15 DAS and values were comparable or higher than that of hand weeding treatment.

Email

sheejakraj70@gmail.com

Address

College of Agriculture, Vellayani, Kerala Agricultural University, Thiruvananthapuram, Kerala 695 522, India

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