Growers can avoidĭamage from this pest by locating their field at least 1/2 mileįrom any solanaceous crop. Heads and two rows of black spots along the sides of theirīoth adults and larvae feed on leaves. The adults are yellow with 10 black stripes on their wing covers.Įggs are oviposited on the underside of the leaf and are The Colorado potato beetle (CPB) is a pest of any solanaceousĬrop (e.g., tomato, potato, eggplant, and peppers).ĬPB prefer potato and will not feed as extensively on tomato. Return next year to that or neighboring fields. Striped armyworm one year does not necessarily mean it will Growers MUST watch for this pest in their tomatoesĮach year, because its population will fluctuate greatly from The pest is essential to understanding when controls should be Leaves must be insepected in June so that YSA can beįound when small and before it feeds on fruit. Of plants throughout a field show severe feeding, then a treatment However, when feeding isįound, hornworms are small (less than 2 inches), and 2-4%
Watch for hornworms, plants with feeding damage, So, scout fields for hornworms starting in They are best controlled when still small,ġ/2 - 1 3/4 inches. When hornworms are large, 2-4 inches, insecticides may Caterpillars sometimes eat green fruit, but usuallyĬonsume large amounts of foliage in a rather short time. Moths are active in late June toĮarly July. Segment, and have 7-8 white stripes running diagonally along Hornworms can be 3-4 inches in length, are usuallyīlue-green, have a “tail” or horn on their second to last body They are rarely numerous enough to cause any significantĭamage. Of their size and damage to tomato plants. Hornworms can make a big impression on growers because To outbreaks of secondary pests (mites and aphids) that are When trap catches reachħ-8 male moths per week, an insecticide should be applied.Īlso, excessive sprays of many insecticides can lead The presence of silking corn in the area will usuallyĭivert moths from tomato to corn. If moth catches are low (1-4 moths per week), sprays are not Tomato fruitworm moths are being caught in pheromone traps. Sprays are only necessary when tomato fruit are present and Is already present on the fruit, any caterpillars that hatch willĬome into contact with a lethal dose of the insecticide.
Necessary when moth populations are high.
Minor feeding on leaves, protectant insecticide sprays are Prefer to feed on green fruit and will seldom enter ripe fruit.īecause caterpillars damage the fruit directly with only Into the fruit, contaminating the area with feces. When eggs hatch, caterpillars quickly begin to bore deeply
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