Prote\u00e7\u00e3o de Cultivos BASF<\/a>, mostrou que uma porcentagem semelhante de agricultores est\u00e1 adicionando um herbicida pr\u00e9-emergente com controle residual para combater ervas daninhas resistentes, como ambr\u00f3sia, cavalinha, erva-de-s\u00e3o-jo\u00e3o e erva-de-s\u00e3o-jo\u00e3o.<\/p>\n\u201cLambsquarters est\u00e3o passando por maiores taxas de glifosato, deixando press\u00e3o de ervas daninhas e competi\u00e7\u00e3o nos campos mais tarde na temporada\u201d, diz um produtor na pesquisa nacional.<\/p>\n
Embora apenas 23% dos entrevistados acreditem que a resist\u00eancia ao glifosato afetar\u00e1 sua produtividade nesta esta\u00e7\u00e3o de cultivo, a pesquisa confirma que muitos agricultores acreditam que precisam agir agora para superar a amea\u00e7a de ervas daninhas resistentes ao glifosato que podem prejudicar sua produtividade no futuro.<\/p>\n
Um estudo da Universidade Purdue conduzido em 2005-2006 descobriu que 40 a 47 por cento dos produtores indicaram que misturar glifosato com herbicidas residuais em tanques, ou incluir herbicidas alternativos com diferentes modos de a\u00e7\u00e3o seriam pr\u00e1ticas de manejo eficazes para minimizar a resist\u00eancia de ervas daninhas. Cinco anos depois, a pesquisa da BASF confirma que a maioria dos produtores est\u00e1 colocando essas ideias em pr\u00e1tica.<\/p>\n
\u201cOs produtores est\u00e3o buscando uma nova qu\u00edmica herbicida para preencher a lacuna onde o glifosato est\u00e1 falhando\u201d, diz o Dr. Dan Westberg, gerente t\u00e9cnico de mercado da BASF.<\/p>\n
A BASF oferece solu\u00e7\u00f5es de resist\u00eancia com novos produtos qu\u00edmicos, como a tecnologia de herbicida Kixor, diz Westberg.<\/p>\n
Apesar do amplo reconhecimento entre especialistas agr\u00edcolas sobre a resist\u00eancia a herbicidas, 40% dos agricultores que responderam \u00e0 pesquisa planejam aumentar a taxa de uso de glifosato ou o n\u00famero de aplica\u00e7\u00f5es p\u00f3s-emergentes em rela\u00e7\u00e3o ao ano passado, criando condi\u00e7\u00f5es prop\u00edcias para o desenvolvimento de resist\u00eancia.<\/p>\n
\u201cDepender muito de um modo de a\u00e7\u00e3o, como o glifosato, criar\u00e1 popula\u00e7\u00f5es de ervas daninhas resistentes\u201d, diz Westberg. \u201cSe os produtores continuarem aplicando glifosato repetidamente em taxas cada vez maiores, eles acabar\u00e3o batendo em uma parede. Os produtores podem combater a resist\u00eancia empregando uma diversidade de ferramentas em seu sistema de manejo de ervas daninhas.\u201d<\/p>\n
(Fonte: Prote\u00e7\u00e3o de Cultivos BASF<\/a><\/em>)<\/p>","protected":false},"excerpt":{"rendered":"Quase 60 por cento dos agricultores que responderam a uma pesquisa nacional recente disseram que est\u00e3o mudando seus planos de manejo de ervas daninhas\u2026<\/p>","protected":false},"author":110,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[19],"tags":[157,109],"class_list":["post-6764","post","type-post","status-publish","format-standard","hentry","category-herbicides","tag-glyphosate-resistance","tag-herbicide-resistance"],"yoast_head":"\n
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