Contribution of legumes to the availability of soil nitrogen and its uptake by wheat in Mediterranean environments of central Chile

The absorption and partitioning of N is determined by its availability and demand during the various phenological stages of the crop. In two experiments conducted in rainfed areas of the Mediterranean climate region of central Chile, legume-wheat (Triticum aestivum L.) rotations were compared to oat...

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Autores principales:	Espinoza,Soledad, Ovalle,Carlos, Zagal,Erick, Matus,Iván, del Pozo,Alejandro
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2015
Materias:	Alfisol Andisol crop rotation field peas lupins N uptake oat Triticum aestivum vetch
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392015000100016
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spelling	oai:scielo:S0718-583920150001000162018-10-01Contribution of legumes to the availability of soil nitrogen and its uptake by wheat in Mediterranean environments of central ChileEspinoza,SoledadOvalle,CarlosZagal,ErickMatus,Ivándel Pozo,Alejandro Alfisol Andisol crop rotation field peas lupins N uptake oat Triticum aestivum vetch The absorption and partitioning of N is determined by its availability and demand during the various phenological stages of the crop. In two experiments conducted in rainfed areas of the Mediterranean climate region of central Chile, legume-wheat (Triticum aestivum L.) rotations were compared to oat (Avena sativa L.)-wheat systems (with and without applications of N fertilizer). The objective was to assess the contribution of legumes to the availability of soil N and N uptake by the wheat crop following grain legumes. N mineralization and uptake, N use efficiency (NUE), and N uptake efficiency (NUpE) by wheat were evaluated at different phenological stages in 2010. Synchronization existed between accumulated soil N mineralization and N uptake by the wheat. N uptake by wheat was higher in Experiment II (Andean foothill) than in Experiment I (interior dryland). Grain yields after legumes ranged 60-110% and 72-103% of yields in the fertilized cereal rotation (oat-wheat) in Experiments I and II, respectively. There was high correlation between soil N availability vs. grain yield (R² = 0.84 and 0.64) and N uptake vs. grain yield (R² = 0.55 and 0.64) for Experiments I and II, respectively. Rotations with lupine (Lupinus spp.) and field peas (Pisum sativum L.) showed high NUE and NUpE in Experiment I, and Experiment II in pea. The lowest NUE was after oats with N fertilizers. It is concluded that wheat cultivated in both agro-ecological areas after grain legumes or green manure was more efficient in N uptake and use than cereal, especially when the latter was fertilized.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.75 n.1 20152015-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392015000100016en10.4067/S0718-58392015000100016
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Alfisol Andisol crop rotation field peas lupins N uptake oat Triticum aestivum vetch
spellingShingle	Alfisol Andisol crop rotation field peas lupins N uptake oat Triticum aestivum vetch Espinoza,Soledad Ovalle,Carlos Zagal,Erick Matus,Iván del Pozo,Alejandro Contribution of legumes to the availability of soil nitrogen and its uptake by wheat in Mediterranean environments of central Chile
description	The absorption and partitioning of N is determined by its availability and demand during the various phenological stages of the crop. In two experiments conducted in rainfed areas of the Mediterranean climate region of central Chile, legume-wheat (Triticum aestivum L.) rotations were compared to oat (Avena sativa L.)-wheat systems (with and without applications of N fertilizer). The objective was to assess the contribution of legumes to the availability of soil N and N uptake by the wheat crop following grain legumes. N mineralization and uptake, N use efficiency (NUE), and N uptake efficiency (NUpE) by wheat were evaluated at different phenological stages in 2010. Synchronization existed between accumulated soil N mineralization and N uptake by the wheat. N uptake by wheat was higher in Experiment II (Andean foothill) than in Experiment I (interior dryland). Grain yields after legumes ranged 60-110% and 72-103% of yields in the fertilized cereal rotation (oat-wheat) in Experiments I and II, respectively. There was high correlation between soil N availability vs. grain yield (R² = 0.84 and 0.64) and N uptake vs. grain yield (R² = 0.55 and 0.64) for Experiments I and II, respectively. Rotations with lupine (Lupinus spp.) and field peas (Pisum sativum L.) showed high NUE and NUpE in Experiment I, and Experiment II in pea. The lowest NUE was after oats with N fertilizers. It is concluded that wheat cultivated in both agro-ecological areas after grain legumes or green manure was more efficient in N uptake and use than cereal, especially when the latter was fertilized.
author	Espinoza,Soledad Ovalle,Carlos Zagal,Erick Matus,Iván del Pozo,Alejandro
author_facet	Espinoza,Soledad Ovalle,Carlos Zagal,Erick Matus,Iván del Pozo,Alejandro
author_sort	Espinoza,Soledad
title	Contribution of legumes to the availability of soil nitrogen and its uptake by wheat in Mediterranean environments of central Chile
title_short	Contribution of legumes to the availability of soil nitrogen and its uptake by wheat in Mediterranean environments of central Chile
title_full	Contribution of legumes to the availability of soil nitrogen and its uptake by wheat in Mediterranean environments of central Chile
title_fullStr	Contribution of legumes to the availability of soil nitrogen and its uptake by wheat in Mediterranean environments of central Chile
title_full_unstemmed	Contribution of legumes to the availability of soil nitrogen and its uptake by wheat in Mediterranean environments of central Chile
title_sort	contribution of legumes to the availability of soil nitrogen and its uptake by wheat in mediterranean environments of central chile
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2015
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392015000100016
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Contribution of legumes to the availability of soil nitrogen and its uptake by wheat in Mediterranean environments of central Chile

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