(IPPM) in Vegetables - Vegetableipmasia.org

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Resource Manual on IPPM in Vegetable World Education Philippines, Inc. 21. Bean Leaf Beetle Cerotoma trifurcata Family: Chrysomelidae Plants attacked: Bean, pea, soybean Type of damage: Larvae feed on roots, nodules, and underground portions of the stem. Adults feed on stems of seedlings and chew round holes in leaves and pods. Remember: Plants can usually tolerate a considerable amount of leaf feeding. 22. Mexican Bean Beetle Epilachna varivestis Family:Coccinellidae Plants attacked: Bean, cowpea, soybean Type of damage: Larvae and adults feed on the undersurface of the leaves, giving them a lacy appearance. They may also attack pods when abundant. Remember: Heavy rains help by knocking adults and larvae off the plants. 23. Corn Borer Ostrinia nubilalis Family:Pyralidae Plants attacked: Corn, pepper, bean, tomato Type of damage: Larvae feed on foliage and ears of corn, bore inside pepper and tomato fruit, and feed on or bore into bean pods. Comments: Damage to corn may be serious enough to require insecticide treatments, especially late in the summer. On the other hand, damage to pepper, tomato, and bean can usually be tolerated by home gardeners. 120
Resource Manual on IPPM in Vegetable World Education Philippines, Inc. B. NATURAL ENEMIES OF INSECT PESTS OF VEGETABLES Friendly Insects Assassin bug (Reduviidaye)- Assassin bugs are killer insects that eat other bugs. They lie in wait for insects and then stab the prey with their proboscis (the beak) and inject a toxin that dissolves tissue. The assassin bug then sucks up the other bug's tissues. Sometimes, when other food is not available, assassin bugs even eat each other. Like all insects, they have 6 jointed legs, two antennae, and an exoskeleton made of chitin (a material that also forms our hair and fingernails). Their three-part body consists of a head (with the mouthparts, eyes, and antennae), thorax (where the legs and wings attach), and the abdomen (with the reproductive, and most digestive organs). Damsel Bug (Nabidae) Damsel bugs are important predators that feed on plant pests such as aphids, beetle larvae, caterpillars and other soft-bodied insects. Damsel bugs are dull brown with light and dark markings. They are more elongated than other bugs and have thickened forelegs for grasping prey. They also have fairly long antennae. Big-eyed bug (Lygaedae) Big-eyed bugs have oval bodies and broad heads with distinctive, wide-set, bulging eyes. They have short antennae with an enlarged tip. Adults are usually gray, brown or yellowish in color.They stalk their prey which include caterpillars, lygus eggs and nymphs; aphids, spider mites, flea beetles, caterpillar eggs and larvae; and immature bugs, and leafhoppers. Predacious stink bug (Pentatomidae) Predacios stink bugs feed on Colorado potato beetles and various caterpillar larvae. Syrphid fly larvae (Syrphidae) Fly larvae of this species feed on aphids and other soft-bodied insects, such as mealybugs and spider mites. 121
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Resource Manual on Integrated Produ
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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 Vegetabl
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Resource Manual on IPPM in Rice Wor
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