Ecophysiology of drill-seeded rice under reduced nitrogen fertilizer and reduced irrigation during El Niño in Central Colombia

Improvement of efficiencies of N fertilizer and irrigation water is needed for large-scale market-oriented rice cultivation without puddling practice as in American continents. Effects of reductions of N fertilizer and irrigation water on grain yield of drill-seeded rice on zero-leveled fields were...

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Autores principales:	Vivek Deshmukh, Akihiko Kamoshita, Lorena Lopez-Galvis, Dario Pineda
Formato:	article
Lenguaje:	EN
Publicado:	Taylor & Francis Group 2021
Materias:	rice direct seeding n uptake grain yield water-saving seasonal effect Plant culture SB1-1110
Acceso en línea:	https://doaj.org/article/9f1cffc828f04e519db5e89a119cf393
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spelling	oai:doaj.org-article:9f1cffc828f04e519db5e89a119cf3932021-11-26T11:19:47ZEcophysiology of drill-seeded rice under reduced nitrogen fertilizer and reduced irrigation during El Niño in Central Colombia1343-943X1349-100810.1080/1343943X.2021.1881407https://doaj.org/article/9f1cffc828f04e519db5e89a119cf3932021-10-01T00:00:00Zhttp://dx.doi.org/10.1080/1343943X.2021.1881407https://doaj.org/toc/1343-943Xhttps://doaj.org/toc/1349-1008Improvement of efficiencies of N fertilizer and irrigation water is needed for large-scale market-oriented rice cultivation without puddling practice as in American continents. Effects of reductions of N fertilizer and irrigation water on grain yield of drill-seeded rice on zero-leveled fields were quantified across five N levels (220, 180 [two sources with 5 or 3 splits], 140, and 0 kg N ha−1) and three irrigation strategies (irrigating every 3, 6, or 8 days; W1, W2, and W3, respectively) in dry and wet seasons during an El Niño event in Central Colombia. Reducing the N application rate from 180 kg N ha−1 to 140 kg N ha−1 (22% reduction) did not reduce yield in either season in spite of slightly reduced N uptake, owing to increased N use efficiency in all irrigation strategies. Three split of N fertilizer with slow release urea (180 kg N ha−1) and with basal organic amendment did not reduce yield compared with the conventional 5 split method. Yield in dry season reduced under the 2 water-saving strategies (W2, W3) almost proportionally to the reduced water supply (irrigation + rainfall) by flowering. In wet season, yield in mild water saving (W2, with 26% water saving) was similar to conventional irrigation management (W1), leading to its highest water productivity. Physiological parameters (e.g. stomatal conductance, total N uptake) were greater in wet season than in dry season. This study showed potential reduction of N fertilizer and conditions of climate for water-saving in drill-seeded rice production in Colombia.Vivek DeshmukhAkihiko KamoshitaLorena Lopez-GalvisDario PinedaTaylor & Francis Grouparticlericedirect seedingn uptakegrain yieldwater-savingseasonal effectPlant cultureSB1-1110ENPlant Production Science, Vol 24, Iss 4, Pp 418-432 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	rice direct seeding n uptake grain yield water-saving seasonal effect Plant culture SB1-1110
spellingShingle	rice direct seeding n uptake grain yield water-saving seasonal effect Plant culture SB1-1110 Vivek Deshmukh Akihiko Kamoshita Lorena Lopez-Galvis Dario Pineda Ecophysiology of drill-seeded rice under reduced nitrogen fertilizer and reduced irrigation during El Niño in Central Colombia
description	Improvement of efficiencies of N fertilizer and irrigation water is needed for large-scale market-oriented rice cultivation without puddling practice as in American continents. Effects of reductions of N fertilizer and irrigation water on grain yield of drill-seeded rice on zero-leveled fields were quantified across five N levels (220, 180 [two sources with 5 or 3 splits], 140, and 0 kg N ha−1) and three irrigation strategies (irrigating every 3, 6, or 8 days; W1, W2, and W3, respectively) in dry and wet seasons during an El Niño event in Central Colombia. Reducing the N application rate from 180 kg N ha−1 to 140 kg N ha−1 (22% reduction) did not reduce yield in either season in spite of slightly reduced N uptake, owing to increased N use efficiency in all irrigation strategies. Three split of N fertilizer with slow release urea (180 kg N ha−1) and with basal organic amendment did not reduce yield compared with the conventional 5 split method. Yield in dry season reduced under the 2 water-saving strategies (W2, W3) almost proportionally to the reduced water supply (irrigation + rainfall) by flowering. In wet season, yield in mild water saving (W2, with 26% water saving) was similar to conventional irrigation management (W1), leading to its highest water productivity. Physiological parameters (e.g. stomatal conductance, total N uptake) were greater in wet season than in dry season. This study showed potential reduction of N fertilizer and conditions of climate for water-saving in drill-seeded rice production in Colombia.
format	article
author	Vivek Deshmukh Akihiko Kamoshita Lorena Lopez-Galvis Dario Pineda
author_facet	Vivek Deshmukh Akihiko Kamoshita Lorena Lopez-Galvis Dario Pineda
author_sort	Vivek Deshmukh
title	Ecophysiology of drill-seeded rice under reduced nitrogen fertilizer and reduced irrigation during El Niño in Central Colombia
title_short	Ecophysiology of drill-seeded rice under reduced nitrogen fertilizer and reduced irrigation during El Niño in Central Colombia
title_full	Ecophysiology of drill-seeded rice under reduced nitrogen fertilizer and reduced irrigation during El Niño in Central Colombia
title_fullStr	Ecophysiology of drill-seeded rice under reduced nitrogen fertilizer and reduced irrigation during El Niño in Central Colombia
title_full_unstemmed	Ecophysiology of drill-seeded rice under reduced nitrogen fertilizer and reduced irrigation during El Niño in Central Colombia
title_sort	ecophysiology of drill-seeded rice under reduced nitrogen fertilizer and reduced irrigation during el niño in central colombia
publisher	Taylor & Francis Group
publishDate	2021
url	https://doaj.org/article/9f1cffc828f04e519db5e89a119cf393
work_keys_str_mv	AT vivekdeshmukh ecophysiologyofdrillseededriceunderreducednitrogenfertilizerandreducedirrigationduringelninoincentralcolombia AT akihikokamoshita ecophysiologyofdrillseededriceunderreducednitrogenfertilizerandreducedirrigationduringelninoincentralcolombia AT lorenalopezgalvis ecophysiologyofdrillseededriceunderreducednitrogenfertilizerandreducedirrigationduringelninoincentralcolombia AT dariopineda ecophysiologyofdrillseededriceunderreducednitrogenfertilizerandreducedirrigationduringelninoincentralcolombia
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Ecophysiology of drill-seeded rice under reduced nitrogen fertilizer and reduced irrigation during El Niño in Central Colombia

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