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Basic Entomology for Farmers
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Diamondback Moth
Crops affected: Cruciferous crops like cabbage, broccoli, cauliflower. Control methods: Use of mating disruption pheromones, biocontrol agents like parasites, and resistant crop varieties.
Russian Wheat Aphid
Crops affected: Wheat, barley, and other small grains. Control methods: Use of resistant varieties, application of systemic insecticides, conservation of natural enemy insects.
Aphids
Crops affected: Many, including beans, peas, potatoes. Control methods: Introduce beneficial insects (like lady beetles), apply insecticidal soaps, neem oil applications.
Colorado Potato Beetle
Crops affected: Potatoes, tomatoes, eggplant. Control methods: Manual removal, use of kaolin clay, application of Bacillus thuringiensis var. tenebrionis.
Leafhopper
Crops affected: Grapes, potatoes, beans, and many others. Control methods: Use of insecticide-treated netting, promotion of natural predators, planting trap crops.
Fruit Fly
Crops affected: Various fruits including apricots, peaches, and citrus. Control methods: Use of bait traps, application of GF-120 (a spinosad-based bait), and exclusion with fine netting.
Corn Earworm
Crops affected: Corn, tomato, cotton. Control methods: Use of pheromone traps, timely insecticide application, crop rotation.
European Corn Borer
Crops affected: Corn, pepper, and beans. Control methods: Planting Bt corn, applying beneficial nematodes, mechanical destruction of overwintering sites.
Codling Moth
Crops affected: Apples, pears, and walnuts. Control methods: Pheromone traps for monitoring, timely use of insecticides, sanitation to eliminate overwintering sites.
Japanese Beetle
Crops affected: Over 300 plant species including soybeans, grapes, raspberries. Control methods: Using beetle traps, hand-picking, applying milky spore disease.
Carrot Weevil
Crops affected: Carrots, celery, and parsley. Control methods: Crop rotation, using floating row covers, timely application of insecticides.
Thrips
Crops affected: Many, including onions, beans, and ornamental plants. Control methods: Using reflective mulches, applying insecticidal soaps or spinosad, release of predatory mites.
Squash Vine Borer
Crops affected: Squash, pumpkins, and gourds. Control methods: Timing of insecticides to target larvae, crop rotation, use of resistant varieties.
Red Spider Mite
Crops affected: Strawberries, cucumbers, tomatoes, and ornamental plants. Control methods: Use predatory insects like Phytoseiulus persimilis, spray miticides, increase humidity to deter mites.
Whiteflies
Crops affected: Tomatoes, cabbage, citrus and many ornamental plants. Control methods: Implement yellow sticky traps, release of Encarsia formosa (a parasitic wasp), use horticultural oils.
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