The aim of the paper is to analyze the use of pesticides in multicrops farms. To this end, we propose a framework to estimate damage reducing functions based on an extension of the Lichtenberg-Zilberman specification to a vector output. The estimation provides useful insights for farmers about the effectiveness of pesticides application among productions at farm level. Besides, from a perspective of pesticides reduction, our analysis may provide guidance for policymakers since it highlights the effective role of pesticides in production processes.