How to control onion fly

Onion flies, also known as onion maggots, are oligophagous pests that only harm lily vegetables, especially onions and garlic.

The combination of agricultural control and chemical control should be adopted to control onion fly. When garlic spoils mother and son, ammonia can be applied once with watering, which can significantly reduce the harm. When maggots are found in the field, they should be watered frequently and flooded if necessary.

Chemical control should be combined with aboveground and underground control, and adults should be controlled mainly on the ground. In the early stage of adult occurrence, 80% dichlorvos EC 1500 times, 5% cypermethrin EC 1500 times, 2.5% cypermethrin EC 2000 times, 2.5% cypermethrin EC 2000 times, spraying soil surface, rhizome and stem, once every 7 to 8 days, twice in a row.

In addition to spraying in the field, the adults on the honey plants at the edge of the field should also be controlled. After the occurrence of larvae in the field, the root can be irrigated with medicine solution. The agents used are: 1000 times of 40% methyl isophos EC, 1000 times of 50% phoxim EC, 1000 times of 40% omethoate EC, 80% dichlorvos EC and so on. When filling the root, the liquid should infiltrate at least 5 cm underground. Where possible, the greater the amount of application, the better the effect.