Pests of Patchouli and Their Control

Pests of Patchouli and Their Control

aphid

The adults and larvae of aphids mainly cluster on tender shoots and leaves to cause damage, affecting plant growth and seriously affecting the germination of new buds and leaves.

Prevention and control methods: You can spray 2000 times diluted 50% anthelmintic wettable powder, or 1500 times diluted 40% dimethoate emulsifiable concentrate for prevention and control. Be sure to stop using the drug about 15 days before harvest to avoid toxin residues.

Red Spider

The peak period of damage is during the high temperature period from June to August. Red spider mites will suck juice from the back of the leaves and rob the plant of nutrients. The specific symptoms are small yellow-white spots that initially appear on the affected parts, which then gradually expand into yellow-brown burnt spots, and finally the entire leaf will turn yellow and fall off.

Prevention and control methods: You can spray 1500 times diluted insect mite like, or you can choose 3000 times diluted 1.8% avermectin for prevention and control.

Silver moth

The larvae of the silver-striped leaf moth cause damage by biting leaves, leaving holes or notches on the leaf surface. The larvae usually lurk on the back of leaves during the day and feed on the leaf surface at night or on cloudy days.

Prevention and control methods: Spray 300-350 times of 25% chlorpyrifos solution, or spray 1000 times of 90% crystal dichlorvos solution.

Leaf folder

The larvae of leaf rollers will spin silk to roll up young shoots and leaves, and then chew the leaves to cause damage.

Prevention and control methods: You can spray 300-400 times dilution of trichlorfon on the leaves for prevention and control, which can achieve good results.

Cutworms, mole crickets

Cutworms and mole crickets will bite off the rhizomes of Patchouli seedlings, resulting in a shortage of seedlings and affecting yield.

Prevention and control methods: You can use 90% crystal dichlorvos as poison bait for trapping and killing, or you can apply 1000 times diluted 50% phoxim mixed with poisoned soil and apply it in strips.