Effect of Nitrogen Rates and Split Nitrogen Fertilization on Grain Yield and its Components in Flooded Rice

Nutritional management in rice (Oryza sativa L.) crops is mainly associated with N fertilization, which is difficult to adjust in field conditions due to variations in soil type and climatic conditions. Between 28 000 and 46 000 ha per year is dedicated to rice production in Chile and profits depend...

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Autores principales: Hirzel,Juan, Pedreros,Alberto, Cordero,Karla
Lenguaje:English
Publicado: Instituto de Investigaciones Agropecuarias, INIA 2011
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Acceso en línea:http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000300015
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spelling oai:scielo:S0718-583920110003000152018-10-01Effect of Nitrogen Rates and Split Nitrogen Fertilization on Grain Yield and its Components in Flooded RiceHirzel,JuanPedreros,AlbertoCordero,Karla Irrigated rice nitrogen management rice productivity Nutritional management in rice (Oryza sativa L.) crops is mainly associated with N fertilization, which is difficult to adjust in field conditions due to variations in soil type and climatic conditions. Between 28 000 and 46 000 ha per year is dedicated to rice production in Chile and profits depend on fertilization. A field experiment determine the effect of N rates and split N fertilization on grain yield and its components was carried out in two locations during two consecutive seasons (2007 to 2009), where five N rates and five split N fertilizations were evaluated. The locations were in Parral (36°2’ S; 72°08’ W, Vertisol) and San Carlos (36°19’ S; 71°59’ W, Inceptisol), with N rates of 80, 100, 120, 140, and 160 kg ha-1 applied in different development stages, such as sowing, tillering, panicle initiation, and boot. Results indicate an important seasonal effect on grain yield. Yield increased with N rates higher than 120 and 140 kg ha-1 in San Carlos and Parral, respectively. Moreover, higher productivity with split N fertilization was (1) 33% of N at sowing, 33% at tillering, and 34% at panicle initiation or (2) 50% of N at sowing and 50% at panicle initiation. Yield components with the highest effect on productivity were affected by the evaluated split N. On the other hand, higher N rates increased the percentage of both stained and sterile grains per panicle.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.71 n.3 20112011-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000300015en10.4067/S0718-58392011000300015
institution Scielo Chile
collection Scielo Chile
language English
topic Irrigated rice
nitrogen management
rice productivity
spellingShingle Irrigated rice
nitrogen management
rice productivity
Hirzel,Juan
Pedreros,Alberto
Cordero,Karla
Effect of Nitrogen Rates and Split Nitrogen Fertilization on Grain Yield and its Components in Flooded Rice
description Nutritional management in rice (Oryza sativa L.) crops is mainly associated with N fertilization, which is difficult to adjust in field conditions due to variations in soil type and climatic conditions. Between 28 000 and 46 000 ha per year is dedicated to rice production in Chile and profits depend on fertilization. A field experiment determine the effect of N rates and split N fertilization on grain yield and its components was carried out in two locations during two consecutive seasons (2007 to 2009), where five N rates and five split N fertilizations were evaluated. The locations were in Parral (36°2’ S; 72°08’ W, Vertisol) and San Carlos (36°19’ S; 71°59’ W, Inceptisol), with N rates of 80, 100, 120, 140, and 160 kg ha-1 applied in different development stages, such as sowing, tillering, panicle initiation, and boot. Results indicate an important seasonal effect on grain yield. Yield increased with N rates higher than 120 and 140 kg ha-1 in San Carlos and Parral, respectively. Moreover, higher productivity with split N fertilization was (1) 33% of N at sowing, 33% at tillering, and 34% at panicle initiation or (2) 50% of N at sowing and 50% at panicle initiation. Yield components with the highest effect on productivity were affected by the evaluated split N. On the other hand, higher N rates increased the percentage of both stained and sterile grains per panicle.
author Hirzel,Juan
Pedreros,Alberto
Cordero,Karla
author_facet Hirzel,Juan
Pedreros,Alberto
Cordero,Karla
author_sort Hirzel,Juan
title Effect of Nitrogen Rates and Split Nitrogen Fertilization on Grain Yield and its Components in Flooded Rice
title_short Effect of Nitrogen Rates and Split Nitrogen Fertilization on Grain Yield and its Components in Flooded Rice
title_full Effect of Nitrogen Rates and Split Nitrogen Fertilization on Grain Yield and its Components in Flooded Rice
title_fullStr Effect of Nitrogen Rates and Split Nitrogen Fertilization on Grain Yield and its Components in Flooded Rice
title_full_unstemmed Effect of Nitrogen Rates and Split Nitrogen Fertilization on Grain Yield and its Components in Flooded Rice
title_sort effect of nitrogen rates and split nitrogen fertilization on grain yield and its components in flooded rice
publisher Instituto de Investigaciones Agropecuarias, INIA
publishDate 2011
url http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392011000300015
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AT corderokarla effectofnitrogenratesandsplitnitrogenfertilizationongrainyieldanditscomponentsinfloodedrice
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