The present working investigation: Control of Spodoptera frugiperda in Asparagus officinalis L.cv. UC 157 F1 applying Bacillus thuringiensis var. kurstaki and insecticides in Huancaquito Alto - La Libertad it was developed during November and December, 2012. The treatments which were used are: Treatment 1 (B. thuringiensis var. Kurstaki + abamectin + Sulphur), Treatment 2 (B. thuringiensis var. Kurstaki + abamectin + Methomyl), Treatment 3 (B. thuringiensis var. Kurstaki + abamectin); which were applied in a way mechanized trough the sprinkling method .5 evaluations were realized, the first evaluation was realized before the application to know the initial population of larvae, the following control evaluations were realized each 4 days distancing the last one for 6 days to observe if there was some variations into the percentage’s control. These evaluations were realized in four point...