Onion land flies: Alias ​​Garlic, onion flies, green onions. The larvae invaded the pseudo stems of the garlic plants, causing rot, yellow leaves, wilting, and even death.
Control methods:
1 Apply well-fermented organic fertilizer and cover it with mulching.
2 control adult worms, spraying 21% cyanopentane at the beginning of adult emergence. Marathon 6000 times, 90% trichlorfon 800 times.
3 After controlling larvae and finding locust damage, 80% of dichlorvos 1000 times solution or 50% phoxim 1000 times solution can be used for irrigation.
In addition, green onion thrips and aphids also harm garlic. Aphids control thrips with a 40% dimethoate emulsion 1000 times, and then prevent and control once every 15 to 20 days.
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