It lays egg on the stems of the crop and their larvae enters the roots and feed on the plant tissue. Due to this decay micro organisms enter the roots leading to early death of the plant. In order to control manifestation by this pest it is important to maintain high number of natural predators like rove beetle, harvestmen, ants, ground beetle etc in the soil. In order to prevent the plant from flies which lay eggs on the it, the plant should be covered with a cover. The plant can also be grown with any legumes so that the flies are unable to find open ground near its stem.
There are different type of caterpillar pests like cabbage worm, cabbage looper, diamondback moth and purple backed cabbageworm. Cabbage worm are the most common caterpillars on cauliflower plant. Cabbage looper causes more problem during summer season. The diamondback moth is a smaller insect with can bore holes in the cauliflower head and they hardly survive during winters. There are high number of natural predators like ground beetles, damsel bugs, assassin bugs, big eyed bugs, lacewing larvae etc which needs to be maintained in the soil in order to protect the plant against the above pest. Apart from this there are other ways also to prevent attack by these pests like evening overhead sprinkler irrigation, pheromone emitters that disrupt mating and covering the plant to avoid laying off eggs.
These pest attack the seedlings in the plant bed and greenhouse. As a control measure we need to prepare the soil almost 2 weeks prior the cultivation and the plants needs to be checked regularly for any damage.
They are most common pest and are small and slow moving insects, which are found in colonies under leaf surface. Aphids feed by piercing the plants. By maintaining high number of natural predators of aphids in the field, their attack on the plant can be controlled. High pressure sprinkler irrigation is used to kill the insects and also intercropping may also help in preventing pest manifestation. Some of the aphids are green peach aphids and turnip aphids that damage the crop. Generally organophosphate compounds are used as chemical control for aphids.
They puncture the leaves by feeding on them leading to dark warts appearance on the leaves and they also damage the curds by feeding on them. It is important to control thrips population at early stage and if forage surrounding it is cleared heavy migration by thrips can occur.