Response of direct seeded rice to increasing rates of nitrogen, phosphorus, and potassium in two paddy rice soils

ABSTRACT The rice (Oryza sativa L.) crop is very important worldwide for its contribution to human nutrition. Rice grain yield depends on several agronomic management factors that must also be adjusted to the cropping system such as permanent inundation (anaerobic conditions) or direct seeding (aero...

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Autores principales:	Hirzel,Juan, Paredes,Mario, Becerra,Viviana, Donoso,Gabriel
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2020
Materias:	Direct seeding fertilization grain yield Oryza sativa
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392020000200263
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spelling	oai:scielo:S0718-583920200002002632020-11-30Response of direct seeded rice to increasing rates of nitrogen, phosphorus, and potassium in two paddy rice soilsHirzel,JuanParedes,MarioBecerra,VivianaDonoso,Gabriel Direct seeding fertilization grain yield Oryza sativa ABSTRACT The rice (Oryza sativa L.) crop is very important worldwide for its contribution to human nutrition. Rice grain yield depends on several agronomic management factors that must also be adjusted to the cropping system such as permanent inundation (anaerobic conditions) or direct seeding (aerobic and anaerobic conditions) mainly in response to the application of nutrients such as N. In Chile, the cropping system with direct seeding has limited agronomic and scientific development. The objective was to determine the effect of increasing N (0, 40, 80, 120, and 160 kg ha-1), P (0, 30, 60, and 120 kg P2O5 ha-1), and K (0, 30, 60, and 120 kg K2O ha-1) rates on grain yield and N agronomic efficiency (NAE) (kg grain produced per kg N applied) in two paddy rice soils for two consecutive seasons. Grain yield had a positive response to increasing N rates in the two evaluated soils (grain yield increased from 6.7 to 8.9 Mg ha-1 in the Vertisol and from 7.4 to 11.0 Mg ha-1 in the Alfisol) and a low response to P rates in the Vertisol. The Alfisol showed no response to increasing P rates, and both soils had no response to K application. The N rates that obtained the highest rice grain yield were 120 and 160 kg ha-1 for Alfisol and Vertisol, respectively. The P rate that obtained the highest rice yield in the Vertisol was 30 kg ha-1 P2O5. In addition, NAE values associated to those N rates were 74 and 61, respectively. In conclusion, direct seeding in rice cropping had a response to high rates of applied N, low response to P, and no response to K.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.80 n.2 20202020-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392020000200263en10.4067/S0718-58392020000200263
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Direct seeding fertilization grain yield Oryza sativa
spellingShingle	Direct seeding fertilization grain yield Oryza sativa Hirzel,Juan Paredes,Mario Becerra,Viviana Donoso,Gabriel Response of direct seeded rice to increasing rates of nitrogen, phosphorus, and potassium in two paddy rice soils
description	ABSTRACT The rice (Oryza sativa L.) crop is very important worldwide for its contribution to human nutrition. Rice grain yield depends on several agronomic management factors that must also be adjusted to the cropping system such as permanent inundation (anaerobic conditions) or direct seeding (aerobic and anaerobic conditions) mainly in response to the application of nutrients such as N. In Chile, the cropping system with direct seeding has limited agronomic and scientific development. The objective was to determine the effect of increasing N (0, 40, 80, 120, and 160 kg ha-1), P (0, 30, 60, and 120 kg P2O5 ha-1), and K (0, 30, 60, and 120 kg K2O ha-1) rates on grain yield and N agronomic efficiency (NAE) (kg grain produced per kg N applied) in two paddy rice soils for two consecutive seasons. Grain yield had a positive response to increasing N rates in the two evaluated soils (grain yield increased from 6.7 to 8.9 Mg ha-1 in the Vertisol and from 7.4 to 11.0 Mg ha-1 in the Alfisol) and a low response to P rates in the Vertisol. The Alfisol showed no response to increasing P rates, and both soils had no response to K application. The N rates that obtained the highest rice grain yield were 120 and 160 kg ha-1 for Alfisol and Vertisol, respectively. The P rate that obtained the highest rice yield in the Vertisol was 30 kg ha-1 P2O5. In addition, NAE values associated to those N rates were 74 and 61, respectively. In conclusion, direct seeding in rice cropping had a response to high rates of applied N, low response to P, and no response to K.
author	Hirzel,Juan Paredes,Mario Becerra,Viviana Donoso,Gabriel
author_facet	Hirzel,Juan Paredes,Mario Becerra,Viviana Donoso,Gabriel
author_sort	Hirzel,Juan
title	Response of direct seeded rice to increasing rates of nitrogen, phosphorus, and potassium in two paddy rice soils
title_short	Response of direct seeded rice to increasing rates of nitrogen, phosphorus, and potassium in two paddy rice soils
title_full	Response of direct seeded rice to increasing rates of nitrogen, phosphorus, and potassium in two paddy rice soils
title_fullStr	Response of direct seeded rice to increasing rates of nitrogen, phosphorus, and potassium in two paddy rice soils
title_full_unstemmed	Response of direct seeded rice to increasing rates of nitrogen, phosphorus, and potassium in two paddy rice soils
title_sort	response of direct seeded rice to increasing rates of nitrogen, phosphorus, and potassium in two paddy rice soils
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2020
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392020000200263
work_keys_str_mv	AT hirzeljuan responseofdirectseededricetoincreasingratesofnitrogenphosphorusandpotassiumintwopaddyricesoils AT paredesmario responseofdirectseededricetoincreasingratesofnitrogenphosphorusandpotassiumintwopaddyricesoils AT becerraviviana responseofdirectseededricetoincreasingratesofnitrogenphosphorusandpotassiumintwopaddyricesoils AT donosogabriel responseofdirectseededricetoincreasingratesofnitrogenphosphorusandpotassiumintwopaddyricesoils
_version_	1714205399488397312

Response of direct seeded rice to increasing rates of nitrogen, phosphorus, and potassium in two paddy rice soils

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