Uso de extratos de Eucaliptus globulus labil, Cymbopogon citratus stapf, Prosopis juliflora, e Pimpinela anisum l. no controle do Sitophilus zeamais.

Abstract

The alternative control of the Sitophilus zeamais plague was primarily tested by using vegetal extracts of Eucalipto (Eucaliptus globulus labil), Capim Santo (Cymbopogon citratus stapf), Algaroba (Prosopis juliflora) and Erva Doce (Pimpinela anisum l.). Cold extraction was carried out in a ratio of 40g solute (botanic material) to 400ml of solutizer (pure alcohol). The aplication was done with a manual pulverizer in a Petri plate with 10 adult insects by plate. Plates only with insects and plates where insects were pulverized only with pure alcohol were used. Results were obtained by counting the number of insects which died within 24 and 48 hours, respectively. The 24 and 48 hours death rate indicates that the use of such extraction Eucalipto, Capim Santo and Algaroba does not cause a significant death rate. Differently extraction the erva doce what presentation death rate significant