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Com o objetivo de verificar a ocorrência de insetos da parte aérea na cultura da soja convencional e geneticamente modificada resistente a glyphosate, realizou-se este trabalho durante a safra agrícola 2004/05, em Cruz Alta, RS, na área experimental da Fundação Centro de Experimentação e Pesquisa (FUNDACEP). A semeadura foi realizada no dia 26/11/2004, no delineamento experimental de blocos ao acaso com parcelas subdivididas e com quatro repetições, em esquema fatorial 2 x 3. O fator A correspondeu à cultivar "CD 214 RR" resistente a glyphosate e à "CD 201" convencional e o fator B correspondeu ao sistema de manejo das plantas daninhas (sem controle, controle mecânico e controle químico tradicional) e com um tratamento adicional (controle químico com glyphosate na cultivar "CD 214 RR"). A utilização da soja geneticamente modificada resistente a glyphosate e a aplicação do herbicida glyphosate alteraram a ocorrência de algumas espécies de insetos-praga e inimigos naturais na parte aérea da soja. The experiment was carried out during the crop season 2004/05, in Cruz Alta, RS, Brazil at Fundação Centro de Experimentação e Pesquisa (FUNDACEP) experimental area. The objective was to study the occurrence of insects in conventional and genetically modified herbicide-tolerant soybean. The seeding was done in November, 2004. The experimental design was randomized blocks and factorial scheme. The factor A was represented by the varieties 'CD 214 RR' (glyphosate-tolerant) and 'CD 201' (conventional). The factor B was composed by weed management systems, were b1- without weed control, b2- mechanical control and b3- chemical control with conventional herbicides. An additional treatment was used, where glyphosate application on 'CD 214 RR' was done. Soybean genetically modified herbicide-tolerant and glyphosate application had effects on some pests and beneficial insects in soybean

ciência rural

Ocorrência de insetos na parte aérea da soja em função do manejo de plantas daninhas em cultivar convencional e geneticamente modificada resistente a glyphosate