ارزیابی کارآیی فرمولاسیون میکروکپسول ایمیداکلوپرید+ سولفور با ویژگی رهاسازی کنترل شده در جهت کنترل آفات مکنده پنبه

The use of controlled release and encapsulation technologies in the formulation of pesticides is a strategy that successfully and purposefully delivers their active ingredient to the target site in order to increase performance and reduce the use of pesticides. However, due to the compatible mixing of the mineral and biocompatible composition of sulfur and the chemical pesticide imidacloprid, in addition to increasing the effectiveness of insecticides, the amount of chemical pesticide consumption and thus its environmental pollution will be reduced. The aim of this project is to evaluate the efficiency of two biocompatible formulations with controlled release property of imidacloprid, imidacloprid + sulfur, prepared by using linear-dendritic copolymers based on polycitric acid and in the form of capsule suspension (CS) in comparison with the commercial formulation of imidacloprid (SC) to control important sucking pests of cotton. The three sucking pests studied in the efficacy of these three formulations were: Aphis gossypii Glover, Bemisia tabaci Gennadius and Thrips tabaci Lindeman. The effectiveness of the formulations was assessed under field conditions within 21 days from the time of spraying. Data analysis showed: CS formulation of imidacloprid, CS formulation of imidacloprid+sulfur and SC formulation of imidacloprid after 21 days, 65.75, 84.22 and 55.44 percent efficiency for aphid control, respectively; They showed 83.86, 86.31 and 75.28 percent efficiency for whitefly control and 85.55, 93.07 and 51.25 percent efficiency for cotton thrips control, respectively. Therefore, CS formulation of imidacloprid+sulfur has the highest insecticide efficiency in the longest time after treatment to control all three investigated pests. The results obtained from the successful synthesis and efficiency of micro-imidacloprid+sulfur formulation confirm that by using new technologies to optimize pesticide formulations and prepare a compatible mixture of chemical and mineral pesticides, not only the insecticide efficiency of the pesticide can be improved, but also by reducing the amount of essential chemical pesticides, we can reduce the costs and environmental pollution for pest management as much as possible. In addition, it has the ability to provide and advise active producers in the field of pesticide production in order to reduce the use of chemical pesticides and optimize pest control, due to the biocompatibility of the accompanying materials used in the formulation and the competitive price with commercial samples and no need to ultra-advanced devices and the possibility of converting the volume of laboratory production to semi-industrial and industrial, the application of this technology in the field of plant protection and food health. In this way, by introducing such a product, the indiscriminate use of pesticides can be prevented, which will reduce the cost of control in addition to reducing environmental risks.