How beneficial nematodes control onion fly
process. The larval stage is the most dangerous stage for the plants, as the larvae feed extensively. Once the initial host plants are damaged, the larvae [...] from the eggs, the larvae crawl behind the leaf sheaths to enter the bulbs, where they feed and cause internal damage. This damage compromises the quality [...] beneficial nematodes. The challenge of onion fly infestation Michiel's primary challenge is the Delia antiqua , female onion flies lay their eggs near the base