(IPPM) in Vegetables - Vegetableipmasia.org

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Resource Manual on IPPM in Vegetable World Education Philippines, Inc. 15. Hornworms Manduca spp. Family: Sphingidae Plants attacked: Tomato, potato, pepper, eggplant Type of damage: The tomato and tobacco hornworms consume large amounts of green foliage and sometimes fruit. Comments: Easily detected through presence of droppings resembling those produced by rabbits. Can be controlled in home gardens by hand picking. Many hornworms are killed by parasites that pupate on the hornworms body. 16. Corn Earworm or Tomato Fruitworm Helicoverpa zea Family: Noctuidae Plants attacked: Many, including corn, tomato, bean, pepper, okra, eggplant Type of damage: Corn earworms feed on the marketable portion of each vegetable crop that it attacks, often making them unusable. Remember: Home gardeners may wish to cut the damaged tips off sweet corn ears or plant extra to compensate for losses. 17. Striped Cucumber Beetle Acalymma vittatum Family: Chrysomelidae Plants attacked: Cucurbits (cucumber, cantaloupe, squash, gourd, pumpkin, watermelon) Type of damage: Larvae feed on roots and underground stems. Adults may destroy newly emerged plants. On older plants, beetles feed on leaves, shoots, and stems. The beetles transmit a bacterium that causes bacterial wilt to cucumber and cantaloupe. Remember: Only a short period of feeding is necessary to transmit the bacterium, so plants must be protected from beetle feeding. Protecting plants with row covers before 118
Resource Manual on IPPM in Vegetable World Education Philippines, Inc. bloom will prevent beetle feeding and disease transmission, but be sure to remove them when flowers appear. 18. Spotted Cucumber Beetle Diabrotica undecimpunctata howardi Family: Chrysomelidae Plants attacked: Cucurbits, bean, pea, potato, beet, asparagus, eggplant, tomato, corn, cabbage Type of damage: Larvae feed on roots of corn, beans, alfalfa, and many grasses. Adults feed on foliage and also transmit bacterial wilt of cucurbits to cucumber and cantaloupe. 19. Squash Bug Anasa tristis Family: Coreidae Plants attacked: All cucurbits, but especially squash and pumpkin Type of attack: Nymphs and adults suck plant juices causing leaves to wilt and die. They also feed on developing fruit and may also transmit a disease organism that causes yellow vine. Remember: Squash bugs are usually found in colonies. Destroying crop refuse may reduce the number of squash bugs over winter and lessen problems the following year. 20. Squash Vine Borer Melittia cucurbitae Family: Sesiidae Plants attacked: Squash, pumpkin, gourd, cucumber Type of damage: Larvae bore into the vine, causing a sudden wilting of a vine or an entire plant. Remember: Plants need to be protected with insecticides or screens when vines begin to run. Once inside the vine, the borers are impervious to insecticides. 119
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Compiled and published by: World Ed
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ACKNOWLEDGM ENT World Education (IN
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1. Leaves 48 2. Flower 49 3. Fruit
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Sources 203 Part XII: Farm Record K
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Resource Manual on IPPM in Rice Wor
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