Control of aphids injurious to orchard fruits, currant, gooseberry and grape . A phis pomi Bo Goer. Description or Plate Green Apple Aphis: A, Applo twig In spring with healthy young leaves; J5, a leaf yellowedby attack of young aphlds; C, a twig badly Infested, showing sicklyandstuntcdopeninglcavcs; Z>, youngaphid of first generation; E, maturo aphid of first generation, a stom-mothor; F, O, young and maturoaphids of wingloss summor generations; IF, winged aphid of summer generations; /, wingloss summerform, sldo view showing tho sucking boak; J, terminal shoot of young troo with la
Control of aphids injurious to orchard fruits, currant, gooseberry and grape . A phis pomi Bo Goer. Description or Plate Green Apple Aphis: A, Applo twig In spring with healthy young leaves; J5, a leaf yellowedby attack of young aphlds; C, a twig badly Infested, showing sicklyandstuntcdopeninglcavcs; Z>, youngaphid of first generation; E, maturo aphid of first generation, a stom-mothor; F, O, young and maturoaphids of wingloss summor generations; IF, winged aphid of summer generations; /, wingloss summerform, sldo view showing tho sucking boak; J, terminal shoot of young troo with lato summor Infestationof aphlds; K, a loaf from J showing aphids and their shod skins on under surfaco; L, a male aphid, pro-duced only In fall; M, a soxual fomalo, produeod only In fall; N, eggs, yellowish when first laid, turningthrough groon to black. Descbiption of Plate Apple Aphis on Opening Apple Tiuns: Winter eggs and nowly hatched aphlds on opening applODuds; young aphid much enlarged at right. Firm«fs Bulletin 1128, U. S. Dept. ol Aeilcultuie. PLATE THE GREEN APPLE APHIS. Farmers Bulletin 1128, U. S. OeDt. ol Agiculture. PLATE III
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Keywords: ., bookcentury1900, bookdecade1920, booksubjectinsectp, bookyear1920
