Onion fly
Biological control of onion fly with nematodes Biological control using nematodes can be an effective strategy to manage onion fly ( Delia antiqua ) i [...] on the young leaves, necks of onion seedlings or in the soil close to the base of onion plants. The onion fly larvae that emerge from the eggs tunnel into [...] foliage. This leads to retarded growth, decreased yield, or even death of the plant. For onion growers, onion fly infestations can be a major concern,