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      Influência da rotação de culturas na infestação e danos causados por Sternechus Subsignatus (Boheman) (Coleoptera: Curculionidae) em plantio direto Translated title: Influence of crop rotation on Sternechus Subsignatus (Boheman) (Coleoptera: Curculionidae) infestation and damage under no-tillage

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          Abstract

          Avaliou-se, a campo, a influência da rotação de culturas com milho e soja na infestação e nos danos causados pelo tamanduâ-da-soja, Sternechus subsignatus (Boheman, 1836), em solos manejados no sistema de plantio direto. no município de Cruz Alta, RS. Os resultados indicaram que a infestação de adultos, larvas olivas e larvas hibernantes e os danos de percentagem de plantas de soja atacadas e mortas foram significativamente inferiores na rotação com milho e soja do que o verificado no monocultivo de soja. A soja em rotação com o milho produziu significativamente mais grãos do que a soja em monocultivo. Concluiu-se que a rotação com milho e soja constitui-se numa prática importante a ser usada no manejo de S. subsignatus em áreas infestadas, pelo fato do inseto não se alimentar e nem ovipositar nas plantas de milho, o que propicia a diminuição da sua população.

          Translated abstract

          The corn and soybean crop rotation on Sternechus subsignatus (Boheman. 1836) infestation and damage under notillage was evaluated in the field in the county of Cruz Alta, Rio Grande do Sul State. Brazil. The results indicated that adult infestation. active larvae and hibernating larvae, and that the percent damage of soybean plants attacked and dead, were significantiy lower in the corn-soybean crop rotation in relation to soybean under monocultural system. Soybean in rotation with corn showes significant more grain productivity than soybean under monocultural system. It was concluded that the corn-soybean rotation is an important tool for the management of S. subsignatus in infested areas due to the fact that the insect neither feed nor perform oviposition on corn plants, thus reducing its population.

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          Most cited references7

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          O feijão em cultivos consorciados

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            Dimorfismo sexual e distribuição geográfica de Sternechus subsignatus Boheman, 1836 (Coleoptera: Curculionidae) no Brasil

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              Levantamento de reconhecimendo de solos do Estado do Rio Grande do Sul

              (1973)
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                Author and article information

                Journal
                cr
                Ciência Rural
                Cienc. Rural
                Universidade Federal de Santa Maria (Santa Maria, RS, Brazil )
                0103-8478
                1678-4596
                April 1996
                : 26
                : 1
                : 1-5
                Affiliations
                [01] Cruz Alta RS orgnameFundação Centro de Experimentação e Pesquisa Fecotrigo
                Article
                S0103-84781996000100001 S0103-8478(96)02600101
                6e07c63c-fbb3-4a80-b0db-449915d9b50e

                This work is licensed under a Creative Commons Attribution 4.0 International License.

                History
                : 01 November 1995
                : 13 September 1995
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 8, Pages: 5
                Product

                SciELO Brazil

                Categories
                Defesa Fitossanitária

                soja,soybean,corn,crop systems,cultural control,insecta,milho,sistemas de culturas,controle cultural

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