beta-cyfluthrin (Baythroid XL ) at 0.013 to 0.022 lb ai/A.alpha-cypermethrin (Fastac EC ) at 0.014 to 0.025 lb ai/A.Management-chemical control: COMMERCIAL USE pyrethrins-Some formulations are OMRI-listed for organic use.)-Some formulations are OMRI-listed for organic use. horticultural oil-Some formulations are OMRI-listed for organic use.bifenthrin (as a mix with zeta-cypermethrin ).kurstaki ( Btk ) -Some formulations are OMRI-listed for organic use. azadirachtin (neem oil )-Some formulations are OMRI-listed for organic use.Plow or dig up plants in the fall to prevent overwintering. Generalist predators such as lacewings, minute pirate bugs, and damsel bugs feed on corn earworm eggs and small larvae. Releases of trichogramma wasps may give mixed results. Most parasitized eggs turn black, but there may be a lag period before they do so. Many predators and parasites attack fruitworm eggs, including several species of Trichogramma. Pest monitoring Check leaves for the presence of eggs or larvae and pick these off. There are two to three generations each year. The summer generations overlap, resulting in a regular and gradual build-up of the population from the beginning to the end of the year. Moths move northward and establish infestations in areas where they cannot overwinter. Adults emerge in about 2 weeks and lay eggs on leaves. Larvae feed for 2 to 3 weeks before pupating in the soil. Eggs are white at first but develop a dark red or brown ring within 24 hours. Fruitworm moths are most active during evening and night.įemale moths lay their eggs singly. Egg laying occurs throughout the tomato growing season. Adults emerge in late May and June and begin laying eggs on suitable hosts. This pest also is known as the corn earworm, as it also attacks corn.īiology and life history The tomato fruitworm overwinters as a pupa in the soil except in some areas in the North, where it is unable to survive the winter. Larvae feed on leaves, and burrow into fruit. The tomato fruitworm may be present throughout the season but is most abundant during August and September. They usually are found 2 to 4 inches deep in the soil. Pupae are about 0.75 inch long and mahogany brown. Fully developed worms are about 1.5 inches long and range from pale green or pinkish to brown. Young larvae are greenish with black heads and conspicuous black hairs on the body. Eggs are pale green at first, turning yellowish and finally gray. Pest description and crop damage Tomato fruitworm moths are about 0.75 inch long, robust, with a wingspan of 1 to 1.5 inches, and range from olive green to tan to dark reddish brown.
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