Spatiotemporal analysis of distribution of pest and predator in corn crops

• Autor(a) principal: Mello,Marcello Neiva de
• Data de Publicação: 2021
• Outros Autores: Dias,Carlos Tadeu dos Santos, Medeiros,Elias Silva de, Martins,Ivan Carlos Fernandes, Campos,Lourival Dias
• Tipo de documento: Artigo
• Idioma: eng
• Título da fonte: Arquivos do instituto biológico (Online)
• Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S1808-16572021000100207
• topic: insects; statistical methods; ecological management; Rhopalosiphum maidis; Syrphidae flies

ABSTRACT Crop pests have negative impacts on yield. This paper proposes a spatiotemporal geostatistical modeling to compare data of adult Syrphidae fly count and corn leaf aphid Rhopalosiphum maidis (Fitch, 1856) colonies in corn crops. The use of a geostatistical model that allows the space-time variation makes the approach more interesting because it is a more complete model. Multiple regression was used to model the trend component for the variable response adult Syrphidae fly count and corn leaf aphid colonies, with the coordinates serving as covariates and the spatiotemporal variations around the deviation are described by a random spacetime residual field. Finally, the prediction map obtained by kriging may be a biological indicator of possible corn leaf aphid colonies in the corn crop. It was possible to verify that the occurrence of the pest provided a significant increase in adult predators and seminatural habitats may favor populations of natural enemies.