Successful farming : a ready reference on all phases of agriculture for farmers of the United States and Canada . Wingless Progeny of Winged Hop Aphids from Alternate Treatment.—When aphids appear spray thoroughly with 40 per centnicotine solution diluted 1 part to 800 parts water. Bur. Ent. Bull. 111. The Hop Plant Borer (Hydroecia immanis, Get.).—The hop plant isattacked in three places by this borer during the period of development ofthe insect. Early in the season it bores into the tender tips, causing themto droop; after a short time it falls to the ground and bores into the stemat
Successful farming : a ready reference on all phases of agriculture for farmers of the United States and Canada . Wingless Progeny of Winged Hop Aphids from Alternate Treatment.—When aphids appear spray thoroughly with 40 per centnicotine solution diluted 1 part to 800 parts water. Bur. Ent. Bull. 111. The Hop Plant Borer (Hydroecia immanis, Get.).—The hop plant isattacked in three places by this borer during the period of development ofthe insect. Early in the season it bores into the tender tips, causing themto droop; after a short time it falls to the ground and bores into the stemat the crown. Later it bores out of the stem and goes below the ground,feeding just above the old roots, where it nearly severs the plant. Treatment.—In the spring search for the affected tips and crush theinsects in the stem. Bur. Ent Bull. 7, p. 40. iBur. Ent. Bull. Potato Tuber Moth {Phthorim&a operculella).- Imported Cabbage Web Worm A-Moth. B-Larva, lat- (Hellula undahs).1 erai view. C—Larva, dorsal A—Mature moth. B—Larva, lateral view. view. D—Pupa. E. F—Seg- C—Larva, dorsal view. D—Pupa. times natural size. All three merits of larva, enlarged. (Re-drawn from Riley and Howard.)
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectagriculture, bookyear
