Nutrient Expert for High Yield and Use Efficiency in Rainfed Bt Cotton Hybrids

Low cotton productivity in the rainfed cotton grown in central India is attributed to abiotic (water and nutrients) and biotic (insect pests and diseases) stress. Nutrient stress can be overcome by providing nutrients in right amounts and at the right time when the plant needs the most. Field studie...

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Autores principales:	Angamuthu Manikandan, Desouza Blaise, Sudarshan Dutta, T. Satyanarayana, Bhargavi Bussa
Formato:	article
Lenguaje:	EN
Publicado:	Frontiers Media S.A. 2021
Materias:	fertilizer use efficiency Gossypium hirsutum nitrogen semi-arid tropics soil test crop response urea Agriculture S Plant culture SB1-1110
Acceso en línea:	https://doaj.org/article/7c2eabfabdb24fe7ac41be34f4b89b2f
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spelling	oai:doaj.org-article:7c2eabfabdb24fe7ac41be34f4b89b2f2021-11-16T07:05:59ZNutrient Expert for High Yield and Use Efficiency in Rainfed Bt Cotton Hybrids2673-321810.3389/fagro.2021.777300https://doaj.org/article/7c2eabfabdb24fe7ac41be34f4b89b2f2021-11-01T00:00:00Zhttps://www.frontiersin.org/articles/10.3389/fagro.2021.777300/fullhttps://doaj.org/toc/2673-3218Low cotton productivity in the rainfed cotton grown in central India is attributed to abiotic (water and nutrients) and biotic (insect pests and diseases) stress. Nutrient stress can be overcome by providing nutrients in right amounts and at the right time when the plant needs the most. Field studies in cereal crops have demonstrated fertilizer recommendations by using the Nutrient Expert® (NE) decision support system to improve crop yields. However, such information in the case of the commercial crop, cotton, is scarce. Therefore, on-farm trials were conducted in three districts of Maharashtra, India during 2018–2020 with the hypothesis that the NE-based fertilizer recommendation would lead to higher cotton productivity and savings in fertilizer. Averaged over two seasons and locations, lint yield was significantly greater in the NE based than the recommended dose of fertilizer (RDF), soil test crop response (STCR), and farmers' practice (FP). Internal utilization efficiency (IE) did not differ among treatments for N (4.8 to 5.9 kg lint kg−1 nutrient uptake) and K (6.7 to 7.2 kg lint kg−1 nutrient uptake). With regard to the fertilizer P applied, the FP treatment had the least IE (17.0 kg lint kg−1 nutrient uptake) and was significantly lower than the other treatments. Partial nutrient balance (PNB) did not vary among treatments for applied fertilizer N. The FP treatment had PNB < 1 in case of fertilizer P and ~20 in the case of fertilizer K. This indicates farmers applied excess of P fertilizers. On the other hand, farmers in the region applied very small amount of K. Although the NE treatment had the highest cost of cultivation, net returns were the greatest followed by the STCR and RDF treatments. Our studies demonstrate that the NE-based fertilizer recommendation is not only productive, but also profitable.Angamuthu ManikandanDesouza BlaiseSudarshan DuttaT. SatyanarayanaBhargavi BussaFrontiers Media S.A.articlefertilizer use efficiencyGossypium hirsutumnitrogensemi-arid tropicssoil test crop responseureaAgricultureSPlant cultureSB1-1110ENFrontiers in Agronomy, Vol 3 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	fertilizer use efficiency Gossypium hirsutum nitrogen semi-arid tropics soil test crop response urea Agriculture S Plant culture SB1-1110
spellingShingle	fertilizer use efficiency Gossypium hirsutum nitrogen semi-arid tropics soil test crop response urea Agriculture S Plant culture SB1-1110 Angamuthu Manikandan Desouza Blaise Sudarshan Dutta T. Satyanarayana Bhargavi Bussa Nutrient Expert for High Yield and Use Efficiency in Rainfed Bt Cotton Hybrids
description	Low cotton productivity in the rainfed cotton grown in central India is attributed to abiotic (water and nutrients) and biotic (insect pests and diseases) stress. Nutrient stress can be overcome by providing nutrients in right amounts and at the right time when the plant needs the most. Field studies in cereal crops have demonstrated fertilizer recommendations by using the Nutrient Expert® (NE) decision support system to improve crop yields. However, such information in the case of the commercial crop, cotton, is scarce. Therefore, on-farm trials were conducted in three districts of Maharashtra, India during 2018–2020 with the hypothesis that the NE-based fertilizer recommendation would lead to higher cotton productivity and savings in fertilizer. Averaged over two seasons and locations, lint yield was significantly greater in the NE based than the recommended dose of fertilizer (RDF), soil test crop response (STCR), and farmers' practice (FP). Internal utilization efficiency (IE) did not differ among treatments for N (4.8 to 5.9 kg lint kg−1 nutrient uptake) and K (6.7 to 7.2 kg lint kg−1 nutrient uptake). With regard to the fertilizer P applied, the FP treatment had the least IE (17.0 kg lint kg−1 nutrient uptake) and was significantly lower than the other treatments. Partial nutrient balance (PNB) did not vary among treatments for applied fertilizer N. The FP treatment had PNB < 1 in case of fertilizer P and ~20 in the case of fertilizer K. This indicates farmers applied excess of P fertilizers. On the other hand, farmers in the region applied very small amount of K. Although the NE treatment had the highest cost of cultivation, net returns were the greatest followed by the STCR and RDF treatments. Our studies demonstrate that the NE-based fertilizer recommendation is not only productive, but also profitable.
format	article
author	Angamuthu Manikandan Desouza Blaise Sudarshan Dutta T. Satyanarayana Bhargavi Bussa
author_facet	Angamuthu Manikandan Desouza Blaise Sudarshan Dutta T. Satyanarayana Bhargavi Bussa
author_sort	Angamuthu Manikandan
title	Nutrient Expert for High Yield and Use Efficiency in Rainfed Bt Cotton Hybrids
title_short	Nutrient Expert for High Yield and Use Efficiency in Rainfed Bt Cotton Hybrids
title_full	Nutrient Expert for High Yield and Use Efficiency in Rainfed Bt Cotton Hybrids
title_fullStr	Nutrient Expert for High Yield and Use Efficiency in Rainfed Bt Cotton Hybrids
title_full_unstemmed	Nutrient Expert for High Yield and Use Efficiency in Rainfed Bt Cotton Hybrids
title_sort	nutrient expert for high yield and use efficiency in rainfed bt cotton hybrids
publisher	Frontiers Media S.A.
publishDate	2021
url	https://doaj.org/article/7c2eabfabdb24fe7ac41be34f4b89b2f
work_keys_str_mv	AT angamuthumanikandan nutrientexpertforhighyieldanduseefficiencyinrainfedbtcottonhybrids AT desouzablaise nutrientexpertforhighyieldanduseefficiencyinrainfedbtcottonhybrids AT sudarshandutta nutrientexpertforhighyieldanduseefficiencyinrainfedbtcottonhybrids AT tsatyanarayana nutrientexpertforhighyieldanduseefficiencyinrainfedbtcottonhybrids AT bhargavibussa nutrientexpertforhighyieldanduseefficiencyinrainfedbtcottonhybrids
_version_	1718426675517063168

Nutrient Expert for High Yield and Use Efficiency in Rainfed Bt Cotton Hybrids

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