Chinese scholars have developed a recyclable pesticide.

Original title: Chinese scholars developed a recyclable pesticide
Reporters from the Chinese Academy of Sciences Hefei Institute of Material Sciences was informed that the Institute of Technology and Biology Wu Zhengyan researcher team recently developed a recyclable pH controlled release pesticide, can significantly improve the utilization rate of pesticides, reduce pesticide use, reduce pesticide-induced agricultural surface pollution. The research results have been published in Chemical Engineering, a well-known journal in the international chemical industry.
pesticides are very important to control pests and diseases and promote stable and high grain yield. China's annual pesticide use of millions of tons, but the average utilization rate of only about 30%, most of the pesticides through runoff, leakage, drift and other ways to lose, and cause pollution threats to human and animal health. How to improve the utilization rate of pesticides and reduce the amount of pesticides has become an important problem to be solved in agriculture and environment.
recently, Wu Zhengyan researchers team used diatom soil, iron oxide and other preparation of a composite nanomaterial, and as a carrier to develop a controlled release, recyclable pesticides. The pesticide can regulate the release of pesticides by pH, so that the release speed is synchronized with the demand speed. At the same time, the carrier can effectively improve the adhesion of pesticides on the leaf surface of plants, thereby significantly reducing loss, improving the utilization rate of pesticides, and prolonging the holding period.
addition, the technology uses the magnetic field to recover residual pesticides and carriers, greatly reducing the environmental harm of pesticides, with low cost, high efficiency, environmental friendliness and other advantages. (Xu Haitao)