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Optimization of aviation adjuvants based on wettability analysis for insecticide application on maize using UAV

International Journal of Agricultural and Biological Engineering 2021年第5期14卷 11-18页

作者： Yu Zang Zhiyan Zhou Ying Zang Xiwen Luo Juan Liao Rui Ming Cancan Song Le Zi Rui Jiang Hanxiang Xiao College of Engineering South China Agricultural University/Guangdong Engineering Research Center for Agricultural Aviation Application(ERCAAA)Guangzhou 510642China National Center for International Collaboration Research on Precision Agricultural Aviation Pesticides spraying Technology(NPAAC) Guangzhou 510642China Key Laboratory of Key Technology on Agricultural Machine and Equipment(South China Agricultural University) Ministry of EducationGuangzhou 510642China Institute of Plant Protection Guangdong Academy of Agricultural SciencesGuangzhou 510640China

adjuvants can increase the control efficacy of diseases and insect pests by changing the physico-chemical properties of *** of the aviation spray adjuvants are versions of ground *** insecticide sprays with unmanned aerial vehicles(UAV),have problems such as relatively low droplet deposition rate and poor ***,wettability research and optimization tests for aviation spray adjuvants are *** present study screened 12 spray adjuvants using physico-chemical property *** adjuvants were applied to improve the droplet deposition and control efficacy in maize borers controlling by *** selected spray adjuvants were Po2(a hyperbranched polymer adjuvant)and VO3(a vegetable oil adjuvant).Results showed that,(1)When Po2 was added in water-dispersible granules(WGs)at volume rate of 12 L/hm2,the dynamic surface tension(DST)of WGs was decreased by 37.41%,and the maize leaves were covered by droplets 100%,the droplet deposition was increased by 104%and maize borer control was increased by 46%;(2)VO3 decreased the surface tension of ultra-low-volume(ULV)formulation by 12.02%and the maize leaves were covered by droplets 100%.The effect of VO3 on improving the droplet deposition and control efficacy at 12 L/hm2 with ULV was not ***,the addition of aviation spray adjuvant to improve the wettability of WGs significantly improved the droplet deposition and control efficacy but it had no significant effect on the ULV formulation.

关键词： unmanned aerial vehicles spray adjuvants wettability maize insecticide application

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