Try to minimize as much as possible toxic effects of pesticides on the environment, especially in the agricultural sector could be a very promising alternative. Find a product that meets this expectation becomes crucial. This research aimed to know in a first step, the reactions in some experiments used for this purpose, a large number of insecticides products existing on the market; then in a second step, to identify the product whose effects are less toxic. The use of traditional methods based on comparisons between the effects of each product might prove tedious especially with the complexity of the number of products tested. The use of computational approaches suited to this type of research could be a great contribution in this area. This is the solution that we adopted for our study through an adaptation to our problem of computers 'SysPL' that is based on an optimization of reuse in the product line approach and a generic predictive model.