Control Efficacy of Five Acaricides Against the Polyphagotarsonemus latus on Cumcumber(PDF)

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Title:: Control Efficacy of Five Acaricides Against the Polyphagotarsonemus latus on Cumcumber

Author(s):: KANG Zong-jiang; WANG Ze-hua; SHI Bao-cai; ZHU Liang; GONG Ya-jun; WEI Shu-jun; (Institute of Plant and Environmental Protection，Beijing Academy of Agriculture and Forestry Sciences，Beijing 100097)

Abstract:: Taking Polyphagotarsonemus latus as material，the control efficiency of five acaracides against the Polyphagotarsonemus latus on cumcumber was studied by field test.The results showed that the 3 000 times dissolution of avermectin (1.8％ EC) had the highest control efficiency against the P.latus，with a value of>93% in 1-14 days after sprayed，followed by the 5 000 times dissolution of emamectin benzoate (2.5％ ME) with a value of 90.60%-99.27％.The 3 000 times dissolution of bifenazate (43％ SC) showed low control efficiency of 73.26% in 1 day after sprayed.However，the efficiency incereased with the time of sparying gradually，and the control efficiency reached above 95% in 7 days and 14 days after sprayed.The 4 000 times dissolution of spirodiclofen (240 g/L SC) of and 5 000 times dissolution of etoxazole (110 g/L SC) showed lower control efficiency among the tested acaracides.In summary，3 000 times dissolution of avermectin (1.8％ EC) and 5 000 times dissolution of benzoate (2.5％ ME) were recommended for the regular usage in field.The 3 000 times dissolution of bifenazate (43％ SC) was recommended in the early time occurance of P.latus.

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Last Update: 2015-07-17