The effective component of Metarhizium is conidium. Conidia adhere to the pest, then the hyphae invade and grow rapidly in the pest body, invading various tissue through blood and lymph circulation. Toxins are secreted, effecting the pest’s central nervous system and destroying the integrity of the cell structure. Consequently, the pest will die because of tissue dehydration.

The hyphae in dead pests can extend out of the body and produce conidia. Conidia continue to infect other insects through contact infection or wind diffusion, causing repeated infections in pest population.

In general, when some of the pests are infected, more and more their family members and friends will be easily brought under control.

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