Método de identificação de suscetibilidade à Diatraea saccharalis (ISDS): fatores geográficos e suas influências

Abstract

The Diatraea saccharalis is one of the main pests of sugarcane, being considered in the Center-South region of Brazil the main one. The present research aims at creating a method of identifying areas susceptible to cane drill relating the geographical factors: soil, topography, moisture, temperature, and wind, using geoprocessing tools for modeling and processing of the data. To integrate all these factors we used the Analytic Hierarchy Process (AHP) what consists in a multi-criteria analysis that allows sorting and measuring the relevance between proposed criteria allowing to use their results in map algebra. The method aims at improving the efficiency of biological control, thus reducing usage of chemical pesticides. In the results of Normalized Difference Vegetation Index (NDVI), Intensity of Infestation and Identification of Susceptibility to Diatraea saccharalis, it can be verified that the method presented corresponding results in the validations via remote sensing and field. The results also show that the method can be used for mapping large tracts of planted areas. It should be noted however, that the field sampling is essential for confirmation of generated data and higher assertiveness in decision-making.