. Economic entomology for the . May-beetle.—i, pupa in earthen cell ; 2, larva or white grub ; 3, 4, beetle, from side and above. and pears, causing the fruit to wilt and drop. The larvae live on grass and other roots, and are typical '' white-grubs.'' Culti- vated crops are frequently attacked and much injury is some- times caused. The larval period has not yet been satisfactorily determined for all species, and varies, as does also the time for changing to the adult condition. Frequent rotation and fall ploughing are to be recommended, and where grass lands are infested, heavy top-d
. Economic entomology for the . May-beetle.—i, pupa in earthen cell ; 2, larva or white grub ; 3, 4, beetle, from side and above. and pears, causing the fruit to wilt and drop. The larvae live on grass and other roots, and are typical '' white-grubs.'' Culti- vated crops are frequently attacked and much injury is some- times caused. The larval period has not yet been satisfactorily determined for all species, and varies, as does also the time for changing to the adult condition. Frequent rotation and fall ploughing are to be recommended, and where grass lands are infested, heavy top-dressings of kainit and nitrate of soda have proved beneficial. Wherever ploughing is done in infested fields, chickens should be encouraged to follow in the furrow to pick up the grubs. Where young trees are to be protected from the beetles, jarring them into an umbrella two or three times early in the evening
Size: 2328px × 2146px
Photo credit: © The Bookworm Collection / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bo, bookcentury1800, bookdecade1890, bookpublishernp, bookyear1896
