Monitoramento da população de percevejos pentatomídeos no arroz irrigado com a aplicação do sistema de informação geográfica

Abstract

The rice (Oryza sativa L.) distinguished as one of the major crops of the Rio Grande do Sul State, in this, many insect pests contribute to lost productivity, among them, the stink bugs pentatomids gain prominence. This study aims to monitor the stink bugs pentatomids population in cultivated rice in a historical series than six years, identify the relationships between area, perimeter, the area perimeter relation of rice fields with the stink bugs population and apply the Geographic Information System as a tool in monitoring the population of insect pests. Developed between the years 2006 to 2012, in the Parada Link, in Santa Maria, Rio Grande do Sul State, during the growing seasons of 2005/2006, 2006/2007, 2007/2008, 2008/2009, 2009/2010, 2010/2011, 2011/2012, 12 farms with irrigated rice cultivation, samples were taken of insects in the post-harvest period. We recorded 11 species Chinavia bellum, Dichelops furcatus, D. melacanthus, Edessa brooding, E. rufomarginata, Euschistus heros, Mayrinia curvidens, O. poecilus O. ypsilongriseus, Piezodorus guildinii, T. limbativentris (Hemiptera: Pentatomidae). T. limbativentris was the species with the highest population sampled. Monitoring of pests associated with the Geographic Information System to create choropleth maps helps in determining the spatial and temporal variability of populations of insects in rice fields.