Evaluación de alternativas de control de gorgojo (Pagiocerus frontalis Mill) en postcosecha de maíz (Zea mays L.)

Abstract

The evaluation of insect control alternatives using plant sprays has become a practice that has shown great potential, in order to reduce the use of certain extremely toxic substances such as aluminium phosphide, generally used to control weevils (Pagiocerus frontalis) in maize (Zea mays) at the storage stage. In the present study, sage (Salvia sp), wormwood (Artemisia absiticum L) and altamisa (Ambrosia arborescens Mill) were used in sprayed form. The design used was completely randomized (DCA), consisting of 3 doses (1 g, 2g, 3g) plus 1 control and 4 replicates respectively constituting (40) experimental units consisting of 100 g of Zhima maize with 20 insects. The variables to be evaluated were: The results obtained were analysed by means of ANOVA and Tuckey's significance tests, which indicate that treatment 6 of altamisa (Ambrosia arborescens Mill) in a concentration of 3 g was efficient in the control of weevils (Pagiocerus frontalis Mill), obtaining results of 63% in insect mortality, For the variable infested grains, no statistically significant differences were found, and for the variable weight loss, treatment 6 altamisa (Ambrosia arborescens Mill) at a concentration of 3 g was the best for controlling weight loss maize. Furthermore, in terms of cost analysis, it was determined that the altamisa spray had a lower application cost.