Effect of Different Surfactants on Deposition of Difenoconazole on Vegetable Leaves

FENG Jianyong; DAI Longtao; XIONG Yong; LIU Yingchao

doi:10.15933/j.cnki.1004-3268.2018.04.015

Abstract：In order to improve the effective utilization rate and achieve reduction and efficiency of pesticides,pepper and eggplant were used as test plants,and the deposition of difenoconazole by using four kinds of surfactants,such as JFC,Nongru 500#,Hensmaid 2500 and Langtai D97,on vegetable leaves was analyzed and compared.The results showed that the four surfactants could increase the maximum retention,the ability of rain resistance and the permeability of the pesticide on the leaves of pepper and eggplant in different degrees.JFC could significantly improve the maximum retention of difenoconazole on the leaves,which was 2.09 times and 2.54 times the maximum retention of the control treatment without surfactant in pepper and eggplant leaves respectively;Langtai D97 and Nongru 500# obviously improved the rain resistance ability of difenoconazole,after simulated rainfall,the retention amount of difenoconazole added Langtai D97 was 86.40％ of the original retention amount on the leaves of pepper,and the retention amount of difenoconazole added Nongru 500# was 92.81％ of the original retention amount on the leaves of eggplant;Langtai D97 could enhance the permeability of difenoconazole on the leaves of two crops,and the permeability was 47.31％ and 52.02％ respectively in the leaves of pepper and eggplant.The results demonstrate that reasonable use of JFC could improve the utilization rate and decrease the dose of pesticides;Langtai D97 can be added to enhance the rain resistance ability and permeability of pesticides during rainy season to improve the control effect.