Cabbage root fly
white in colour. The larvae are white or whitish-yellow, 7-10 mm in size, legless, with a wreath of appendages at the end of the body. The pupa is about 5-6 [...] generations. The cabbage fly lays about 120 eggs on the soil surface close to the host stem, or sometimes on the plant. Cabbage fly - Delia radicum on the leaf [...] larvae. The nematodes are applied by spraying or via the irrigation system. After application, the nematodes go in search of larvae, penetrate the larvae