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Impact of sequential herbicides application on crop productivity, weed and nutrient dynamics in soybean under conservation agriculture in Vertisols of Central India

Adoption of conservation agriculture (CA) is very slow due to weed infestations. The application of herbicides is the only viable option to deal with problem of weed management to adhere with basic principles of CA. A field experiment was carried out for three years to evaluate the expediency of dif...

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Autores principales: Vishwakarma, A. K., Meena, Bharat Prakash, Das, Hiranmoy, Jha, Pramod, Biswas, A. K., Bharati, K., Hati, K. M., Chaudhary, R. S., Shirale, A. O., Lakaria, B. L., Gurav, Priya P., Patra, Ashok K.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9857987/
https://www.ncbi.nlm.nih.gov/pubmed/36662725
http://dx.doi.org/10.1371/journal.pone.0279434
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author Vishwakarma, A. K.
Meena, Bharat Prakash
Das, Hiranmoy
Jha, Pramod
Biswas, A. K.
Bharati, K.
Hati, K. M.
Chaudhary, R. S.
Shirale, A. O.
Lakaria, B. L.
Gurav, Priya P.
Patra, Ashok K.
author_facet Vishwakarma, A. K.
Meena, Bharat Prakash
Das, Hiranmoy
Jha, Pramod
Biswas, A. K.
Bharati, K.
Hati, K. M.
Chaudhary, R. S.
Shirale, A. O.
Lakaria, B. L.
Gurav, Priya P.
Patra, Ashok K.
author_sort Vishwakarma, A. K.
collection PubMed
description Adoption of conservation agriculture (CA) is very slow due to weed infestations. The application of herbicides is the only viable option to deal with problem of weed management to adhere with basic principles of CA. A field experiment was carried out for three years to evaluate the expediency of different herbicides and their sequential applications under CA. In this study, seven treatments comprised of either alone or sequential application of pre-emergence (PE) and post-emergence (PoE) herbicides, hand weeding and weedy check were tested in soybean. Result indicated that sequential application of glyphosate at 1 kg ai ha(-1) + pendimethalin at 1 kg ai ha(-1)as PE followed by PoE application of imazethapyr at 100 g ai ha(-1) at 30 days after sowing (DAS) proved to be the best economical option in terms of plant growth parameters, crop biomass, seed yield, weed index and carbon and nutrient recycling. Pearson’s correlation coefficients matrix revealed that grain yield was significantly (P<0.0001) related to weed density at harvest (r = -0.84), (WDH) (r = -0.63), weed dry biomass (WDB) (r = -0.52), weed nitrogen (N), phosphorus (P) and potassium (K) uptake (r = -0.56, r = -0.59 and r = -0.66), respectively and weed index (WI) (r = -0.96). The bivariate linear regression study of grain yield on weed control efficiency (WCI) biomass, N, P and K uptake by grain showed a clear significant (P<0.0001) dependence with R(2) value of 0.53, 0.99, 0.95 and 0.98, respectively. The fitted stepwise multiple regression model also revealed that N and P uptake in grain, weed density at 20 DAS and K uptake in weed were actual predictor for grain yield. We concluded that, effective and economical weed control under CA in soybean can be achieved through sequential application of glyphosate along with pendimethalin at 1 kg ai ha(-1) each PE followed by PoE use of imazethapyr at 100 g ai ha(-1) at 30 DAS.
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spelling pubmed-98579872023-01-21 Impact of sequential herbicides application on crop productivity, weed and nutrient dynamics in soybean under conservation agriculture in Vertisols of Central India Vishwakarma, A. K. Meena, Bharat Prakash Das, Hiranmoy Jha, Pramod Biswas, A. K. Bharati, K. Hati, K. M. Chaudhary, R. S. Shirale, A. O. Lakaria, B. L. Gurav, Priya P. Patra, Ashok K. PLoS One Research Article Adoption of conservation agriculture (CA) is very slow due to weed infestations. The application of herbicides is the only viable option to deal with problem of weed management to adhere with basic principles of CA. A field experiment was carried out for three years to evaluate the expediency of different herbicides and their sequential applications under CA. In this study, seven treatments comprised of either alone or sequential application of pre-emergence (PE) and post-emergence (PoE) herbicides, hand weeding and weedy check were tested in soybean. Result indicated that sequential application of glyphosate at 1 kg ai ha(-1) + pendimethalin at 1 kg ai ha(-1)as PE followed by PoE application of imazethapyr at 100 g ai ha(-1) at 30 days after sowing (DAS) proved to be the best economical option in terms of plant growth parameters, crop biomass, seed yield, weed index and carbon and nutrient recycling. Pearson’s correlation coefficients matrix revealed that grain yield was significantly (P<0.0001) related to weed density at harvest (r = -0.84), (WDH) (r = -0.63), weed dry biomass (WDB) (r = -0.52), weed nitrogen (N), phosphorus (P) and potassium (K) uptake (r = -0.56, r = -0.59 and r = -0.66), respectively and weed index (WI) (r = -0.96). The bivariate linear regression study of grain yield on weed control efficiency (WCI) biomass, N, P and K uptake by grain showed a clear significant (P<0.0001) dependence with R(2) value of 0.53, 0.99, 0.95 and 0.98, respectively. The fitted stepwise multiple regression model also revealed that N and P uptake in grain, weed density at 20 DAS and K uptake in weed were actual predictor for grain yield. We concluded that, effective and economical weed control under CA in soybean can be achieved through sequential application of glyphosate along with pendimethalin at 1 kg ai ha(-1) each PE followed by PoE use of imazethapyr at 100 g ai ha(-1) at 30 DAS. Public Library of Science 2023-01-20 /pmc/articles/PMC9857987/ /pubmed/36662725 http://dx.doi.org/10.1371/journal.pone.0279434 Text en © 2023 Vishwakarma et al https://creativecommons.org/licenses/by/4.0/This is an open access article distributed under the terms of the Creative Commons Attribution License (https://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Vishwakarma, A. K.
Meena, Bharat Prakash
Das, Hiranmoy
Jha, Pramod
Biswas, A. K.
Bharati, K.
Hati, K. M.
Chaudhary, R. S.
Shirale, A. O.
Lakaria, B. L.
Gurav, Priya P.
Patra, Ashok K.
Impact of sequential herbicides application on crop productivity, weed and nutrient dynamics in soybean under conservation agriculture in Vertisols of Central India
title Impact of sequential herbicides application on crop productivity, weed and nutrient dynamics in soybean under conservation agriculture in Vertisols of Central India
title_full Impact of sequential herbicides application on crop productivity, weed and nutrient dynamics in soybean under conservation agriculture in Vertisols of Central India
title_fullStr Impact of sequential herbicides application on crop productivity, weed and nutrient dynamics in soybean under conservation agriculture in Vertisols of Central India
title_full_unstemmed Impact of sequential herbicides application on crop productivity, weed and nutrient dynamics in soybean under conservation agriculture in Vertisols of Central India
title_short Impact of sequential herbicides application on crop productivity, weed and nutrient dynamics in soybean under conservation agriculture in Vertisols of Central India
title_sort impact of sequential herbicides application on crop productivity, weed and nutrient dynamics in soybean under conservation agriculture in vertisols of central india
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9857987/
https://www.ncbi.nlm.nih.gov/pubmed/36662725
http://dx.doi.org/10.1371/journal.pone.0279434
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