Effect of nitrogen and water deficit type on the yield gap between the potential and attainable wheat yield

Water deficit and N fertilizer are the two primary limiting factors for wheat yield in the North China plain, the most important winter wheat (Triticum aestivum L.) production area in China. Analyzing the yield gap between the potential yield and the attainable yield can quantify the potential for i...

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Autores principales:	Liu,Jiangang, Wang,Guangyao, Kelly,Thorp, Zhang,Yaoyao, Yang,Meng, Chu,Qingquan
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2015
Materias:	DSSAT household farm N availability potential yield Triticum aestivum yield gap
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392015000500011
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spelling	oai:scielo:S0718-583920150005000112018-10-01Effect of nitrogen and water deficit type on the yield gap between the potential and attainable wheat yieldLiu,JiangangWang,GuangyaoKelly,ThorpZhang,YaoyaoYang,MengChu,Qingquan DSSAT household farm N availability potential yield Triticum aestivum yield gap Water deficit and N fertilizer are the two primary limiting factors for wheat yield in the North China plain, the most important winter wheat (Triticum aestivum L.) production area in China. Analyzing the yield gap between the potential yield and the attainable yield can quantify the potential for increasing wheat production and exploring the limiting factors to yield gap in the high-yielding farming region of North China Plain. The Decision Support System for Agrotechnology Transfer (DSSAT) model was used to identify methods to increase the grain yield and decrease the gap. In order to explore the impact of N and cultivars on wheat yield in the different drought types, the climate conditions during 1981 to 2011 growing seasons was categorized into low, moderate, and severe water deficit classes according to the anomaly percentage of the water deficit rate during the entire wheat growing season. There are differences (P < 0.0001) in the variations of the potential yields among three cultivars over 30 yr. For all three water deficit types, the more recent cultivars Jimai22 and Shijiazhuang8 had higher yields compared to the older ’Jinan17’. As the N fertilizer rate increased, the yield gap decreased more substantially during the low water deficit years because of the significant increase in attainable yield. Overall, the yield gaps were smaller with less water stress. Replacement of cultivars and appropriate N fertilizer application based on the forecasted drought types can narrow the yield gap effectively.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.75 n.4 20152015-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392015000500011en10.4067/S0718-58392015000500011
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	DSSAT household farm N availability potential yield Triticum aestivum yield gap
spellingShingle	DSSAT household farm N availability potential yield Triticum aestivum yield gap Liu,Jiangang Wang,Guangyao Kelly,Thorp Zhang,Yaoyao Yang,Meng Chu,Qingquan Effect of nitrogen and water deficit type on the yield gap between the potential and attainable wheat yield
description	Water deficit and N fertilizer are the two primary limiting factors for wheat yield in the North China plain, the most important winter wheat (Triticum aestivum L.) production area in China. Analyzing the yield gap between the potential yield and the attainable yield can quantify the potential for increasing wheat production and exploring the limiting factors to yield gap in the high-yielding farming region of North China Plain. The Decision Support System for Agrotechnology Transfer (DSSAT) model was used to identify methods to increase the grain yield and decrease the gap. In order to explore the impact of N and cultivars on wheat yield in the different drought types, the climate conditions during 1981 to 2011 growing seasons was categorized into low, moderate, and severe water deficit classes according to the anomaly percentage of the water deficit rate during the entire wheat growing season. There are differences (P < 0.0001) in the variations of the potential yields among three cultivars over 30 yr. For all three water deficit types, the more recent cultivars Jimai22 and Shijiazhuang8 had higher yields compared to the older ’Jinan17’. As the N fertilizer rate increased, the yield gap decreased more substantially during the low water deficit years because of the significant increase in attainable yield. Overall, the yield gaps were smaller with less water stress. Replacement of cultivars and appropriate N fertilizer application based on the forecasted drought types can narrow the yield gap effectively.
author	Liu,Jiangang Wang,Guangyao Kelly,Thorp Zhang,Yaoyao Yang,Meng Chu,Qingquan
author_facet	Liu,Jiangang Wang,Guangyao Kelly,Thorp Zhang,Yaoyao Yang,Meng Chu,Qingquan
author_sort	Liu,Jiangang
title	Effect of nitrogen and water deficit type on the yield gap between the potential and attainable wheat yield
title_short	Effect of nitrogen and water deficit type on the yield gap between the potential and attainable wheat yield
title_full	Effect of nitrogen and water deficit type on the yield gap between the potential and attainable wheat yield
title_fullStr	Effect of nitrogen and water deficit type on the yield gap between the potential and attainable wheat yield
title_full_unstemmed	Effect of nitrogen and water deficit type on the yield gap between the potential and attainable wheat yield
title_sort	effect of nitrogen and water deficit type on the yield gap between the potential and attainable wheat yield
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2015
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392015000500011
work_keys_str_mv	AT liujiangang effectofnitrogenandwaterdeficittypeontheyieldgapbetweenthepotentialandattainablewheatyield AT wangguangyao effectofnitrogenandwaterdeficittypeontheyieldgapbetweenthepotentialandattainablewheatyield AT kellythorp effectofnitrogenandwaterdeficittypeontheyieldgapbetweenthepotentialandattainablewheatyield AT zhangyaoyao effectofnitrogenandwaterdeficittypeontheyieldgapbetweenthepotentialandattainablewheatyield AT yangmeng effectofnitrogenandwaterdeficittypeontheyieldgapbetweenthepotentialandattainablewheatyield AT chuqingquan effectofnitrogenandwaterdeficittypeontheyieldgapbetweenthepotentialandattainablewheatyield
_version_	1714205353829203968

Effect of nitrogen and water deficit type on the yield gap between the potential and attainable wheat yield

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