Lepidopteran pests associated with the soybean cultivars phenology = Lepidopteros-praga associados com estágios fenológicos de cultivares de soja

Eliane Carneiro, Luciana Barboza Silva, Alexandre Faria da Silva, Gleidyane Novais Lopes, Bruno Ettore Pavan, Raimundo Henrique Ferreira Rodrigues, Diego Tavares Carvalhinho, Diego Fabio Mielezrski

Abstract


Lepidopteran pests are one of the major constraints to the soybean production potential, whose defoliating caterpillars can occur throughout the crop cycle causing serious damage. Therefore, the objective was to study the population fluctuation of lepidopteran pests and the association of species with the growth stages of soybean cultivars in the Cerrado of Piaui State, Brazil, in order to obtain data to support integrated pest management in the crop. The experiments had as a source of variation thirteen cultivars with fourteen evaluations. The design used was completely randomized in split plots being the cultivars plots and subplots the cultivars phenological stages. The monitoring was conducted by shake-cloth method at random points. Weekly samplings were performed. Generally, species of lepidopteran pests occurred in all soybean phenological stages, especially Chrysodeixis includens and Anticarsia gemmatalis that were present from the beginning to the end of the crop.


Keywords


Lepidoptera. Monitoring. Sampling. Infestation.

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DOI: http://dx.doi.org/10.14393/BJ-v34n1a2018-37172

Bioscience Journal
ISSN 1981-3163 - Online Journal

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