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22 Cards in this Set
- Front
- Back
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Codling moth
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Introduced apple pest, larvae overwinter in silk cocoons under loose bark, oviposit on tree/fruit, larvae crawl in fruit, 2-3 generations per year
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Codling moth/oriental fruit moth management
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Cover sprays to leave residues when moths are hatching, resistance to organophosphates so using neonicotinoids and Rimon or organic insecticides such as spinosad/Cyd-X, mating disruption, timing is important so catch the males in pheromone traps
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Mating disruption
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Sex pheromone applied through orchard keeps males from finding real females
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Oriental fruit moth
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Similar pest to coddling moth, introduced, more prevalent on peaches instead of apples (coddling moths prefer apples), first gen larvae cause tips to flag, 2nd and later tunnel into fruit
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Apple maggot
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One gen a year, pupae overwinter in soil, lay eggs just under skin of apples then tunnel through
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Plum curculio
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Native pest of stone fruits, blueberries, applies. Females chew slit through skin of fruit and place eggs under, larvae tunnel into fruit
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Plum curculio management
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Routine cover sprays in problem areas after fruits begin to develop
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What happens when plum curculio infest apples?
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Most die due to pressure of rapidly growing fruit, if they survive, fruit drops in early summer
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Apple maggot management
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Cover sprays, traps used to determine timing
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European red mite
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Secondary pest when insecticides have killed its enemies, most problem in apples but also in stone fruits/grapes/berries
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European red mite damage
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Rasp away at leaft epidermis, feed on plant sap, leaves turn yellow/brown and photosynthesis is reduced, smaller fruit size/sunburn of fruit
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European red mite management
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Emulsifiable oils sprayed to suffocate eggs, insecticides not effective against predatory mites, reintroduce predatory mites, avoid pyrethroids and Sevin
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San Jose scale
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Indirect pest of woody plant fruits, waxy covering protects them from pesticides
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San Jose scale damage
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Toxin kills cells, localized discoloration, can kill entire trees, purple-red halos on bark/fruit
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San Jose scale management
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Dormant oil spray to suffocate, insecticides timed to coincide with crawler stage
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Lygus bug
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Pests of many fruits/veggies, insert beat into developing fruits
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Lygus bug damage
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Cells around wound are killed, catfacing
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Lygus bug management
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Weed management, but don't mow weeds if there are already Lygus bugs or they will move to orchard
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Spotted wing Drosophila
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New pest in IL
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SWD damage
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Lays eggs before ready for harvest, invested fruits "melt down" in a few days
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SWD management
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Apply insecticide, remove over-ripe fruit and wild hosts
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Colorado potato beetle
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Pest of potatoes, tomatoes, peppers, eggplant, larvae are most damaging but both feed on plant foliage
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