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- W2289267356 abstract "The study of spatial distribution of the insects is fundamental to elaborate sampling plans with potential for use in integrated pest management. Field experiments were carried out for Bemisa tabaci B biotype in common bean Phaseolus vulagaris L. in a 10,000 m 2 area, divided in 100 equal 10 x 10 m plots, at the November and February plantings. Ten plants per plot were sampled weekly. One foliole per plant was collected and the presence-absence of whitefly nymphs was assessed on the abaxial surface. For adults, the presence-absence of the pest was observed visually on the plants. In all the samplings lower values were obtained than the unit for the variance/mean relationship, indicating a regular placing of the whitefly in the field, which was confirmed by the significant values detected for the ⏐d⏐statistic and by the values lower than the unit presented by the Morisita index. The positive binomial distribution was the most suitable to represent the spatial distribution of B. tabaci biotype B in the bean crop. RESUMO - O estudo distribuicao espacial de pragas e fundamental para elaboracao de planos de amostragem que possam propiciar maior adocao do manejo integrado de pragas. Para Bemisia tabaci (Genn.) biotipo B em feijoeiro Phaseolus vulgaris L., foram conduzidos ensaios de campo em uma area de 10.000 m 2 , dividida em 100 parcelas iguais de 10 x 10 m, nas epocas de semeadura das aguas e da seca. As amostragens foram realizadas semanalmente, em 10 plantas por parcela. Coletou-se um foliolo por planta e avaliou-se a presenca-ausencia de ninfas mosca-branca na pagina abaxial. Para adultos, observou-se visualmente a presenca-ausencia praga nas plantas. Em todas as amostragens obtiveram-se valores menores que a unidade para a relacao variância/media, indicando disposicao regular mosca-branca no campo, confirmada pelos valores significativos estatistica ⏐d⏐, do teste de afastamento aleatoriedade, assim como pelos valores inferiores a unidade do indice de Morisita. A distribuicao binomial positiva foi o modelo mais adequado para representar a distribuicao espacial B. tabaci biotipo B na cultura do feijao. PALAVRAS-CHAVE: Insecta, mosca-branca, distribuicao binomial, amostragem" @default.
- W2289267356 created "2016-06-24" @default.
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- W2289267356 date "2004-01-01" @default.
- W2289267356 modified "2023-09-23" @default.
- W2289267356 title "CROP PROTECTION Distribuição Espacial de Bemisia tabaci (Genn.) Biótipo B (Hemiptera: Aleyrodidae) em Feijoeiro (Phaseolus vulgaris L.)" @default.
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