Field efficacy test of Metarhizium anisopliae CQMa421 against rice planthopper

Release time ：

2021-05-17

8 billion spores/mL of Metarhizium anisopliae CQMa421 dispersible oil suspension agent 1350mL/hm2 has good control effect on rice planthopper. The effective period is long. The average control effect is more than 85% 14 days after the treatment, but it is significantly lower than the corrected control effect of the control agent 25% pirimid suspension agent 450 mL/hm2 91.9%. 8 billion spores/mL of Metarhizium anisopliae CQMa421 dispersible oil suspension agent is safe for the growth of rice, and has no effect on the number of dominant natural enemies such as spiders and cocoon bees in the field.

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