Damping-off may be controlled by using treated seed, and by delaying planting until the soil warms in the spring. No effective chemical control measures have been developed for chile wilt, but avoiding prolonged periods of excessive soil moisture and cultivating to create deep furrows and high ridges along the plant row are often effective in controlling the disease. Crop rotation with small grain crops, such as barley, reduces the incidence of Verticillium wilt. Curly top and chile mosaic are viral diseases that can infect chile. Weeds that harbor viruses should be removed in and around the fields.
Nematodes are microscopic worms that live in the soil and feed on roots.
Rotating fields and fumigation with nematicides before planting reduces damage. Blossom-end rot can be controlled by maintaining a uniform supply of moisture to the plant. Foliar sprays with certain fungicides at the onset of disease may be effective in controlling pod rots. Bacterial leafspot can affect all above ground parts of the plant including the fruit. Control by using only certified, disease-free seed, and spray plants with bordeaux or copper fungicides at the first sign of the disease.