. Economic entomology for the farmer and fruit-grower . The " giant root-borer," Prionus laticollis.— 'V.'^, pupa, and adult. variety of trees and plants, including chestnut, oak, cherry, apple, grape, and blackberry. They require three years to reach maturity, and are sometimes decidedly troublesome. There is no way of reaching the larvae except to dig them out, and in black- berry fields the sudden wilting of part or all of a hill indicates almost infallibly the presence ot one or more, which should then be found and destroyed at once. Grape and apple stand the injury better,
. Economic entomology for the farmer and fruit-grower . The " giant root-borer," Prionus laticollis.— 'V.'^, pupa, and adult. variety of trees and plants, including chestnut, oak, cherry, apple, grape, and blackberry. They require three years to reach maturity, and are sometimes decidedly troublesome. There is no way of reaching the larvae except to dig them out, and in black- berry fields the sudden wilting of part or all of a hill indicates almost infallibly the presence ot one or more, which should then be found and destroyed at once. Grape and apple stand the injury better, but when a tree becomes badly infested nothing remains but to take it out and burn it. Even large trees are
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectbenefic, bookyear1906
