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Flutuação Populacional de Spodoptera frugiperda (J. E. Smith), Diatraea saccharalis (Fabricius) e Doru luteipes (Scudder) em Milho Convencional e Transgênico BT

2011; Volume: 10; Issue: 3 Linguagem: Inglês

10.18512/1980-6477/rbms.v10n3p205-214

ISSN

1980-6477

Autores

Laíse Ferreira de Araújo, Alessandro Guerra da Silva, I. Cruz, Eduardo Lima do Carmo, Adalbert Horvath Neto, Maria Mirmes Paiva Goulart, Jurema Fonseca Rattes,

Tópico(s)

Insect Resistance and Genetics

Resumo

New technologies to pests control in maize should be periodically reviewed for adoption in the cereal producing regions.This study aimed to evaluate the population dynamics of Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae), Diatraea saccharalis (Fabricius) (Lepidoptera: Pyralidae) and the predator Doru luteipes (Scudder) (Dermaptera: Forficulidae) in the development of conventional and Bt transgenic maize.The trial was set up in the off-season cultivation in Rio Verde, GO, Brazil.The experimental design was the randomized blocks with 24 repetitions.The hybrids P 3041 and P 3041YG were used, with a population of 50,000 plants.ha - .It were evaluated the number of insects and the damages caused by the caterpillars on the leaves, stems and tassel, quantification and presence of internodes with galleries, plant height and insertion of ear, grain mass per ear and grain yield.The results allowed concluding that the hybrid P 3041YG showed lower damage of S. frugiperda and presented higher grain mass of ear and grain yield compared to the P 3041conventional hybrid.

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