{"id":14100,"date":"2010-05-17T00:00:00","date_gmt":"2010-05-17T04:00:00","guid":{"rendered":"http:\/\/www.farmchemicalsinternational.com\/2010\/05\/17\/china-pest-surges-on-bt-cotton\/"},"modified":"2015-12-10T15:40:32","modified_gmt":"2015-12-10T20:40:32","slug":"china-pest-surges-on-bt-cotton","status":"publish","type":"post","link":"https:\/\/www.agribusinessglobal.com\/es\/markets\/asia\/china-pest-surges-on-bt-cotton\/","title":{"rendered":"China La plaga surge en el algod\u00f3n de Bt"},"content":{"rendered":"<p>BEIJING, China - Un estudio de quince a\u00f1os en el norte de China realizado por cient\u00edficos del <a href=\"http:\/\/www.caas.net.cn\/engforcaas\/index.htm\">Academia China de Ciencias Agr\u00edcolas <\/a>y el Centro Nacional de Servicios y Extensi\u00f3n Agrot\u00e9cnica de China, que examin\u00f3 casi tres millones de hect\u00e1reas (ha) de <em>bacilo turingiensico <\/em>(<em>Bt)<\/em> algod\u00f3n y 26 millones de hect\u00e1reas de otros cultivos, muestra que el aumento de la chinche mirid (<em>Heteroptera Miridae<\/em>) se relaciona directamente con el aumento de la plantaci\u00f3n de <em>: Bt<\/em> algod\u00f3n, informes <a href=\"http:\/\/www.scidev.net\/en\/news\/bt-cotton-linked-with-surge-in-crop-pest.html\">SciDev.net<\/a>. La plaga se est\u00e1 extendiendo desde <em>: Bt<\/em> campos de algod\u00f3n y destrucci\u00f3n de cultivos de frutas, verduras y cereales.<\/p>\n<p>En el estudio, se sigui\u00f3 el uso de insecticidas en las granjas de algod\u00f3n durante 15 a\u00f1os. Cinco a\u00f1os despu\u00e9s del estudio, los cient\u00edficos tambi\u00e9n comenzaron a auditar el n\u00famero de insectos mirid en 38 ubicaciones. Consistente con la siembra de gen\u00e9ticamente modificados (GM) <em>: Bt<\/em> algod\u00f3n, los insectos comenzaron a propagarse de los campos de algod\u00f3n a las granjas de frutas, cambiando el estado de una plaga menor a una importante. La culpa, seg\u00fan los cient\u00edficos, es la falta de pesticidas. Los aerosoles que se usaban anteriormente para matar el gusano de la c\u00e1psula del algod\u00f3n (<em>Helicoverpa armigera<\/em>) tambi\u00e9n controlaron los errores de mirid. Ahora se est\u00e1n utilizando diferentes insecticidas para matar el creciente n\u00famero de insectos m\u00edridos.<\/p>\n<p>Los cient\u00edficos instan a realizar evaluaciones de riesgos m\u00e1s exhaustivas para los cultivos transg\u00e9nicos y su efecto sobre las plagas secundarias. El noventa y cinco por ciento del algod\u00f3n plantado en el norte de China es <em>: Bt<\/em> algod\u00f3n.<\/p>\n<p>\u201cNuestro trabajo muestra que una ca\u00edda en el uso de insecticidas en <em>: Bt <\/em>los campos de algod\u00f3n dan lugar a una inversi\u00f3n del papel ecol\u00f3gico del algod\u00f3n; de ser un sumidero de insectos miridos en sistemas convencionales a una fuente real de estas plagas en <em>: Bt<\/em> sistemas de cultivo de algod\u00f3n \u201d, escribieron los autores en su art\u00edculo, que se public\u00f3 el 13 de mayo en la revista <em><a href=\"http:\/\/www.sciencemag.org\/magazine.dtl\">Ciencias<\/a><\/em>.<\/p>","protected":false},"excerpt":{"rendered":"<p>BEIJING, China - Un estudio de quince a\u00f1os en el norte de China realizado por cient\u00edficos de la Academia China de Ciencias Agr\u00edcolas y\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":[28],"tags":[1058],"class_list":["post-14100","post","type-post","status-publish","format-standard","hentry","category-asia","tag-china"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.7 - 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