{"id":35606,"date":"2013-08-21T15:59:18","date_gmt":"2013-08-21T19:59:18","guid":{"rendered":"http:\/\/www.farmchemicalsinternational.com\/2013\/08\/21\/mechanical-weeding-the-answer-to-resistance-issues\/"},"modified":"2015-12-08T15:45:59","modified_gmt":"2015-12-08T20:45:59","slug":"mechanical-weeding-the-answer-to-resistance-issues","status":"publish","type":"post","link":"https:\/\/www.agribusinessglobal.com\/pt\/agrochemicals\/herbicides\/mechanical-weeding-the-answer-to-resistance-issues\/","title":{"rendered":"Capina mec\u00e2nica: a resposta para problemas de resist\u00eancia?"},"content":{"rendered":"<p>Um estudo de longo prazo na Austr\u00e1lia est\u00e1 testando m\u00e9todos mec\u00e2nicos de controle de ervas daninhas em combina\u00e7\u00e3o com o uso de herbicidas para atingir sementes de ervas daninhas durante a colheita, reduzindo a quantidade de ervas daninhas que podem crescer em ciclos de cultivo futuros.<\/p>\n<p>Uma vantagem oferecida por essa combina\u00e7\u00e3o \u00e9 que remover a maior parte das sementes de ervas daninhas diminuir\u00e1 sua capacidade de desenvolver resist\u00eancia aos herbicidas. A resist\u00eancia a herbicidas entre esp\u00e9cies de ervas daninhas se tornou generalizada e est\u00e1 afetando negativamente a agricultura, particularmente na Austr\u00e1lia. <\/p>\n<p>Azev\u00e9m e rabanete selvagem que desenvolveram resist\u00eancia a m\u00faltiplos herbicidas agora dominam os campos na produ\u00e7\u00e3o agr\u00edcola australiana. A pr\u00e1tica principal atual de controle de ervas daninhas depende principalmente de herbicidas para controlar ervas daninhas, mas falha em controlar ervas daninhas maduras que foram para sementes.<\/p>\n<p>De acordo com o jornal <em>Tecnologia de Ervas Daninhas<\/em>, o estudo estabeleceu quatro m\u00e9todos para capturar e destruir sementes de ervas daninhas na colheita:<\/p>\n<p>1) Carro\u00e7as de palha, puxadas por uma colheitadeira de gr\u00e3os, coletam sementes de ervas daninhas e outros materiais vegetais descartados. Esses materiais s\u00e3o ent\u00e3o queimados ou usados como ra\u00e7\u00e3o para gado.<\/p>\n<p>2) Uma calha dispersa as sementes da colhedora em leiras estreitas, que s\u00e3o posteriormente queimadas.<\/p>\n<p>3) Uma enfardadeira acoplada \u00e0 colheitadeira cria fardos de palha e res\u00edduos de palha para alimenta\u00e7\u00e3o do gado.<\/p>\n<p>4) Um dispositivo mec\u00e2nico (Harrington Seed Destructor) usa um moinho de gaiola para processar palha de colheita. De acordo com o relat\u00f3rio, o dispositivo poderia destruir 95% da semente de erva daninha contida na palha.<\/p>\n<p>Os efeitos desse sistema foram observados em 25 grandes campos de cultivo comercial no oeste da Austr\u00e1lia ao longo de 10 esta\u00e7\u00f5es de cultivo consecutivas. Os campos que atingiram a meta de baixa densidade de ervas daninhas foram aqueles que empregaram o sistema de colheita de sementes de ervas daninhas em conjunto com herbicidas de in\u00edcio de esta\u00e7\u00e3o. Os autores recomendam uma abordagem integrada, em oposi\u00e7\u00e3o a uma t\u00e9cnica independente.<\/p>","protected":false},"excerpt":{"rendered":"<p>Um estudo de longo prazo na Austr\u00e1lia est\u00e1 testando m\u00e9todos mec\u00e2nicos de controle de ervas daninhas em combina\u00e7\u00e3o com o uso de herbicidas para atingir sementes de ervas daninhas durante\u2026<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[19],"tags":[109],"class_list":["post-35606","post","type-post","status-publish","format-standard","hentry","category-herbicides","tag-herbicide-resistance"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Mechanical Weeding the Answer to Resistance Issues? - AgriBusiness Global<\/title>\n<meta name=\"description\" content=\"A long-term study in Australia is testing mechanical weed-control methods in combination with herbicide use to target weed seeds during harvest, reducing\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.agribusinessglobal.com\/pt\/agrochemicals\/herbicides\/mechanical-weeding-the-answer-to-resistance-issues\/\" \/>\n<meta property=\"og:locale\" content=\"pt_BR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Mechanical Weeding the Answer to Resistance Issues? 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