Wheat Yield Loss in a Two Species Competition with Emex australis and Emex spinosa
Autor(a) principal: | |
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Data de Publicação: | 2016 |
Outros Autores: | , , , , |
Tipo de documento: | Artigo |
Idioma: | eng |
Título da fonte: | Planta daninha (Online) |
Texto Completo: | http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000100035 |
Resumo: | Emex australis and E. spinosa are significant weed species in wheat and other crops. Information on the extent of competition of the Emex species will be helpful to access yield losses in wheat. Field experiments were conducted to quantify the interference of tested weed densities each as single or mixture of both at 1:1 on their growth and yield, wheat yield components and wheat grain yield losses in two consecutive years. Dry weight of both weed species increased from 3-6 g m-2 with every additional plant of weed, whereas seed number and weight per plant decreased with increasing density of either weed. Both weed species caused considerable decrease in yield components like spike bearing tillers, number of grains per spike, 1000-grain weight of wheat with increasing density population of the weeds. Based on non-linear hyperbolic regression model equation, maximum yield loss at asymptotic weed density was estimated to be 44 and 62% with E. australis, 56 and 70% with E. spinosa and 63 and 72% with mixture of both species at 1:1 during both year of study, respectively. It was concluded that E. spinosa has more competition effects on wheat crop as compared to E. australis. |
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Wheat Yield Loss in a Two Species Competition with Emex australis and Emex spinosaTriticum aestivumyield lossweed competitionEmex australisEmex spinosaEmex australis and E. spinosa are significant weed species in wheat and other crops. Information on the extent of competition of the Emex species will be helpful to access yield losses in wheat. Field experiments were conducted to quantify the interference of tested weed densities each as single or mixture of both at 1:1 on their growth and yield, wheat yield components and wheat grain yield losses in two consecutive years. Dry weight of both weed species increased from 3-6 g m-2 with every additional plant of weed, whereas seed number and weight per plant decreased with increasing density of either weed. Both weed species caused considerable decrease in yield components like spike bearing tillers, number of grains per spike, 1000-grain weight of wheat with increasing density population of the weeds. Based on non-linear hyperbolic regression model equation, maximum yield loss at asymptotic weed density was estimated to be 44 and 62% with E. australis, 56 and 70% with E. spinosa and 63 and 72% with mixture of both species at 1:1 during both year of study, respectively. It was concluded that E. spinosa has more competition effects on wheat crop as compared to E. australis.Sociedade Brasileira da Ciência das Plantas Daninhas 2016-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000100035Planta Daninha v.34 n.1 2016reponame:Planta daninha (Online)instname:Sociedade Brasileira da Ciência das Plantas Daninhas (SBCPD)instacron:SBCPD10.1590/S0100-83582016340100004info:eu-repo/semantics/openAccessJAVAID,M.M.TANVEER,A.ALI,H.H.SHAHID,M.A.BALAL,R.M.AQEEL,M.A.eng2016-03-28T00:00:00Zoai:scielo:S0100-83582016000100035Revistahttp://revistas.cpd.ufv.br/pdaninhaweb/https://old.scielo.br/oai/scielo-oai.php||rpdaninha@gmail.com1806-96810100-8358opendoar:2016-03-28T00:00Planta daninha (Online) - Sociedade Brasileira da Ciência das Plantas Daninhas (SBCPD)false |
dc.title.none.fl_str_mv |
Wheat Yield Loss in a Two Species Competition with Emex australis and Emex spinosa |
title |
Wheat Yield Loss in a Two Species Competition with Emex australis and Emex spinosa |
spellingShingle |
Wheat Yield Loss in a Two Species Competition with Emex australis and Emex spinosa JAVAID,M.M. Triticum aestivum yield loss weed competition Emex australis Emex spinosa |
title_short |
Wheat Yield Loss in a Two Species Competition with Emex australis and Emex spinosa |
title_full |
Wheat Yield Loss in a Two Species Competition with Emex australis and Emex spinosa |
title_fullStr |
Wheat Yield Loss in a Two Species Competition with Emex australis and Emex spinosa |
title_full_unstemmed |
Wheat Yield Loss in a Two Species Competition with Emex australis and Emex spinosa |
title_sort |
Wheat Yield Loss in a Two Species Competition with Emex australis and Emex spinosa |
author |
JAVAID,M.M. |
author_facet |
JAVAID,M.M. TANVEER,A. ALI,H.H. SHAHID,M.A. BALAL,R.M. AQEEL,M.A. |
author_role |
author |
author2 |
TANVEER,A. ALI,H.H. SHAHID,M.A. BALAL,R.M. AQEEL,M.A. |
author2_role |
author author author author author |
dc.contributor.author.fl_str_mv |
JAVAID,M.M. TANVEER,A. ALI,H.H. SHAHID,M.A. BALAL,R.M. AQEEL,M.A. |
dc.subject.por.fl_str_mv |
Triticum aestivum yield loss weed competition Emex australis Emex spinosa |
topic |
Triticum aestivum yield loss weed competition Emex australis Emex spinosa |
description |
Emex australis and E. spinosa are significant weed species in wheat and other crops. Information on the extent of competition of the Emex species will be helpful to access yield losses in wheat. Field experiments were conducted to quantify the interference of tested weed densities each as single or mixture of both at 1:1 on their growth and yield, wheat yield components and wheat grain yield losses in two consecutive years. Dry weight of both weed species increased from 3-6 g m-2 with every additional plant of weed, whereas seed number and weight per plant decreased with increasing density of either weed. Both weed species caused considerable decrease in yield components like spike bearing tillers, number of grains per spike, 1000-grain weight of wheat with increasing density population of the weeds. Based on non-linear hyperbolic regression model equation, maximum yield loss at asymptotic weed density was estimated to be 44 and 62% with E. australis, 56 and 70% with E. spinosa and 63 and 72% with mixture of both species at 1:1 during both year of study, respectively. It was concluded that E. spinosa has more competition effects on wheat crop as compared to E. australis. |
publishDate |
2016 |
dc.date.none.fl_str_mv |
2016-03-01 |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/article |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
format |
article |
status_str |
publishedVersion |
dc.identifier.uri.fl_str_mv |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000100035 |
url |
http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582016000100035 |
dc.language.iso.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
10.1590/S0100-83582016340100004 |
dc.rights.driver.fl_str_mv |
info:eu-repo/semantics/openAccess |
eu_rights_str_mv |
openAccess |
dc.format.none.fl_str_mv |
text/html |
dc.publisher.none.fl_str_mv |
Sociedade Brasileira da Ciência das Plantas Daninhas |
publisher.none.fl_str_mv |
Sociedade Brasileira da Ciência das Plantas Daninhas |
dc.source.none.fl_str_mv |
Planta Daninha v.34 n.1 2016 reponame:Planta daninha (Online) instname:Sociedade Brasileira da Ciência das Plantas Daninhas (SBCPD) instacron:SBCPD |
instname_str |
Sociedade Brasileira da Ciência das Plantas Daninhas (SBCPD) |
instacron_str |
SBCPD |
institution |
SBCPD |
reponame_str |
Planta daninha (Online) |
collection |
Planta daninha (Online) |
repository.name.fl_str_mv |
Planta daninha (Online) - Sociedade Brasileira da Ciência das Plantas Daninhas (SBCPD) |
repository.mail.fl_str_mv |
||rpdaninha@gmail.com |
_version_ |
1752126494835998720 |