Panchenko T. Method of monitoring and ecotoxicological risk of pesticide application in the orchard's agrocenoses

The dissertation is devoted to ecotoxicological monitoring of different in chemical classes pesticides application in the integrated system of orchard crops protection from hazardous organisms. It includes developing methods of determination of heteropolar pesticides in orchard crops, studying the detoxication processes in agrocenosis, estimation of risk of pesticide application according to agroecotoxicological index (AETI). Dipol moment (µ, D) of pesticide compounds is proved to be capable of using for characterizing physical-chemical and ecotoxicological properties thereof. According to the value “µ”, the algorithm has been developed for determination of heteropolar pesticides in cherry and plum which enables modeling the methods of determining pesticide compounds(organic and non organic) in orchard crops as separately as in mixture. Correlation dependence has been stated of detoxication rate constant (k) and compounds polarity (µ). Dipol moment and detoxication rate constant can be used for ecotoxicological screening of pesticides in agrocenosis, substantiation of rules of safe application. Pursuant to the integral classification, according to the 7-marc scale, has been ascertained the danger level of replenished range of pesticides used in orchard crops protection. It was established, that improvement of orchard crops chemical protection may be under decrease of the pesticides load in agrocenoses using low hazardous preparations which effective with little application rates.