Entomology for beginners; for the use of young folks, fruitgrowers, farmers, and gardeners; . INSECTS INJURIOUS TO AGRICULTURE. 209 has discovered that, like the European individuals, it lays its eggs at the approach of cold weather on plum-trees near by. The Hop-worm (Hypena humuli Harris).—In June, and. FIG. 254.—Hop-worm, pupa, and moth; all natural size. again in July and August, hop-leaves are devoured byactive, slender, grass-green caterpillars, with but four pairsof abdominal legs. REMEDIES.—Hand-picking and vigorously shaking the vines twicea day, as well as spraying the vines with wha
Entomology for beginners; for the use of young folks, fruitgrowers, farmers, and gardeners; . INSECTS INJURIOUS TO AGRICULTURE. 209 has discovered that, like the European individuals, it lays its eggs at the approach of cold weather on plum-trees near by. The Hop-worm (Hypena humuli Harris).—In June, and. FIG. 254.—Hop-worm, pupa, and moth; all natural size. again in July and August, hop-leaves are devoured byactive, slender, grass-green caterpillars, with but four pairsof abdominal legs. REMEDIES.—Hand-picking and vigorously shaking the vines twicea day, as well as spraying the vines with whale-oil soap, are advisable. Injuring the Phylloxera (Phylloxera vastatrix Planchon).—By
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Keywords: ., bookcentury1800, bookdecade1880, bookpublishe, booksubjectinsects
