1Shandong Sino-agri United Biotechnology Co.，Ltd.，Jinan 250100，Shandong，China；2Main Service Station for Rural Economic Management of Shandong Province，Jinan 250000，Shandong，China
Abstract：This experiment measured the toxicity of fosthiazate aginst Meloidogyne incognita at greenhouses in Jiyang District of Jinan City and Daiyue District of Taian City of Shandong Province using indoor insect-dipping method，and discovered that the toxicity of fosthiazate aginst Meloidogyne incognita was between 4.18-5.86 mg · L-1．In the fields，single plant root irrigation method was employed to compare the control effects of 30% fosthiazate microcapsule suspension concentrate and 5% fosthiazate microemulsion on root knot nematodes．It was found that both formulations achieved over 80% control effects 30 days after application．As for control effects 60 days and 90 days after application，the 30% fosthiazate microcapsule suspension was significant or extreme significant suerior to that of 5% fosthiazate microemulsion，indicating that 30% fosthiazate microcapsule suspension could effectively prolong its efficacy duration，thus reducing the application times and dosage，and ensuring the safety of agricultural products．
