Density effect and economic threshold of Japanese brome (Bromus japonicus Houtt.) in wheat

Japanese brome (Bromus japonicus Houtt.) is a winter annual weed commonly found in the wheat (Triticum aestivum L.) fields of China. It is prevalent in northern China and produces obvious wheat yield losses. Information on the interference of Japanese brome on wheat density and its economic threshol...

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Autores principales:	Li,Qi, Du,Long, Yuan,Guohui, Guo,Wenlei, Li,Wei, Wang,Jinxin
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2016
Materias:	Economic threshold interference Japanese brome Triticum aestivum weed wheat
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392016000400007
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spelling	oai:scielo:S0718-583920160004000072018-10-01Density effect and economic threshold of Japanese brome (Bromus japonicus Houtt.) in wheatLi,QiDu,LongYuan,GuohuiGuo,WenleiLi,WeiWang,Jinxin Economic threshold interference Japanese brome Triticum aestivum weed wheat Japanese brome (Bromus japonicus Houtt.) is a winter annual weed commonly found in the wheat (Triticum aestivum L.) fields of China. It is prevalent in northern China and produces obvious wheat yield losses. Information on the interference of Japanese brome on wheat density and its economic threshold (ET) is unknown; this information is useful to manage Japanese brome. Two-year field experiments were designed to determine the ET of Japanese brome in wheat. The dry weight of Japanese brome with a density of 320 plants m-2 was similar to the ’natural weeds including Japanese brome’ treatments and higher than other Japanese brome densities, except for the 640 plants m-2 density which had the highest weed dry weight and yield loss. In the absence of Japanese brome, natural weed infestation was less competitive. The ET of Japanese brome in wheat was between 4 and 5 plants m-2 with 80% efficiency for the herbicide flucarbazone. It predicted that 4 plants m-2 of Japanese brome can cause 2.11% to 2.24% yield losses. This information can contribute to decision making for Japanese brome management. Given several production factors, this ET is more precise and reliable than the ET determined with only yield losses and can be used to develop better control strategies.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.76 n.4 20162016-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392016000400007en10.4067/S0718-58392016000400007
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Economic threshold interference Japanese brome Triticum aestivum weed wheat
spellingShingle	Economic threshold interference Japanese brome Triticum aestivum weed wheat Li,Qi Du,Long Yuan,Guohui Guo,Wenlei Li,Wei Wang,Jinxin Density effect and economic threshold of Japanese brome (Bromus japonicus Houtt.) in wheat
description	Japanese brome (Bromus japonicus Houtt.) is a winter annual weed commonly found in the wheat (Triticum aestivum L.) fields of China. It is prevalent in northern China and produces obvious wheat yield losses. Information on the interference of Japanese brome on wheat density and its economic threshold (ET) is unknown; this information is useful to manage Japanese brome. Two-year field experiments were designed to determine the ET of Japanese brome in wheat. The dry weight of Japanese brome with a density of 320 plants m-2 was similar to the ’natural weeds including Japanese brome’ treatments and higher than other Japanese brome densities, except for the 640 plants m-2 density which had the highest weed dry weight and yield loss. In the absence of Japanese brome, natural weed infestation was less competitive. The ET of Japanese brome in wheat was between 4 and 5 plants m-2 with 80% efficiency for the herbicide flucarbazone. It predicted that 4 plants m-2 of Japanese brome can cause 2.11% to 2.24% yield losses. This information can contribute to decision making for Japanese brome management. Given several production factors, this ET is more precise and reliable than the ET determined with only yield losses and can be used to develop better control strategies.
author	Li,Qi Du,Long Yuan,Guohui Guo,Wenlei Li,Wei Wang,Jinxin
author_facet	Li,Qi Du,Long Yuan,Guohui Guo,Wenlei Li,Wei Wang,Jinxin
author_sort	Li,Qi
title	Density effect and economic threshold of Japanese brome (Bromus japonicus Houtt.) in wheat
title_short	Density effect and economic threshold of Japanese brome (Bromus japonicus Houtt.) in wheat
title_full	Density effect and economic threshold of Japanese brome (Bromus japonicus Houtt.) in wheat
title_fullStr	Density effect and economic threshold of Japanese brome (Bromus japonicus Houtt.) in wheat
title_full_unstemmed	Density effect and economic threshold of Japanese brome (Bromus japonicus Houtt.) in wheat
title_sort	density effect and economic threshold of japanese brome (bromus japonicus houtt.) in wheat
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2016
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392016000400007
work_keys_str_mv	AT liqi densityeffectandeconomicthresholdofjapanesebromebromusjaponicushouttinwheat AT dulong densityeffectandeconomicthresholdofjapanesebromebromusjaponicushouttinwheat AT yuanguohui densityeffectandeconomicthresholdofjapanesebromebromusjaponicushouttinwheat AT guowenlei densityeffectandeconomicthresholdofjapanesebromebromusjaponicushouttinwheat AT liwei densityeffectandeconomicthresholdofjapanesebromebromusjaponicushouttinwheat AT wangjinxin densityeffectandeconomicthresholdofjapanesebromebromusjaponicushouttinwheat
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Density effect and economic threshold of Japanese brome (Bromus japonicus Houtt.) in wheat

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