Ảnh hưởng của thuốc trừ dịch hại đến sự sống sót của nhện Pardosa pseudoannulata, thiên địch bắt mồi quan trọng trên ruộng lúa

Abstract

The effects of some insecticides to survival of Pardosa pseudoannulata were investigated in laboratory and screenhouse conditions in Cuu Long University. The results showed that, Kinalux 25 EC, Danitol 10EC, Sec-saigon 50EC and Motox 5EC effected completely toxicity to P. pseudoannulata (killing 100% tested age 5 of larvae and adults), other treatments were lower, 6,67% - 66,67% after 48 hours spread drop in invitro conditions. Although, Score 250EC, Lyrin 480DD and Sofit 30EC were completely safe for P. pseudoannulata adults, Kinalux 25EC and Danitol 10EC effected completely toxicity to P. pseudoannulata (killing 100% tested age 5 of larvae and adults), other treatments showed high toxicity to age 5 of larvae (killing 6,67% - 82, 23% tested age 5 of larvae) and relatively high toxicity to adults (killing 16,00% - 78,23% tested adults) after 72 hours spread drop in screenhouse. The  age 5 of larvae effected toxicity higher than adults of P. pseudoannulata  in the majority tests of insecticides.