1Institute of Vegetables and Flowers,Chinese Academy of Agricultural Sciences,Beijing 100081,China;2College of Plant Protection,Nanjing Agricultural University,Nanjing 210095,Jiangsu,China
Abstract：The efficacy of 50 % cyromazine SP to Liriomyza sativae in the kidney bean field were investigated in 2007 and 2008.The results showed that control effects of 50 % cyromazine SP were 85.34 %-88.02 %,91.00 %-92.01 % and 92.59 %-95.06 % 3-10 days after spraying 75.0 g,112.5 g,150.0 g effective insecticide per hectare,respectively.Control effects of 50 % cyromazine WP were 90.01 %-93.71 % 3-10 days after spraying 150.0 g effective insecticide per hectare.There were no significant differences in control effects between high dosage of 50 % cyromazine SP and 50 % cyromazine WP.The results of 2007 and 2008 didn’t find significant differences in control effect,and basically identical with those of four years and eight years ago.It confirmed that 50 % cyromazine SP was excellent for effective control of Liriomyza sativae in the fields.
