Productive farming . Fig. 143.—Time for first sum-mer spray on peach and plum, asthe calyx is being shed from youngfruit. (Experiment Station, ) ??2-28 PRODUCTIVE FARMING This disease is prevented by spraying in early springbefore the buds swell, with lime-sulfur preparation. Thisis repeated with a weaker solution just before the blossombuds open, and again just after the petals of the blossomsfall to the FlQ. 144. -Leaf-curl disease. Healthy twig on right, the disease prevented byhrae-sulfur spray. (Experiment Station, N. J.) Exercise.—Studying Apple Scab.—Have some one bringto s
Productive farming . Fig. 143.—Time for first sum-mer spray on peach and plum, asthe calyx is being shed from youngfruit. (Experiment Station, ) ??2-28 PRODUCTIVE FARMING This disease is prevented by spraying in early springbefore the buds swell, with lime-sulfur preparation. Thisis repeated with a weaker solution just before the blossombuds open, and again just after the petals of the blossomsfall to the FlQ. 144. -Leaf-curl disease. Healthy twig on right, the disease prevented byhrae-sulfur spray. (Experiment Station, N. J.) Exercise.—Studying Apple Scab.—Have some one bringto school a few samples of scabby apples from the grocerystore or home orchard. The class should all become familiarwith the ways in which the fruit is affected by the scab. Apple Rust.—Leaves attacked by apple rust appear asthough covered in blotches by a heavy coat of iron whole under surface may present a rusty appearance(Fig. 147). The trouble may spread to tender twigs and DISEASES OF PLANTS—SPRAYING 2^29 even to the fruits in some cases. The hfe of this disease isinteresting, and a knowledge of it leads to the proper apple rust fungus hves a portion of its life upon theapple tree or the quince tree, as already described, but itappears in a very different form upon red cedar trees thatmay be growing near the orchard. The growth on the cedartree is popularly kno^\ai as cedar apple.
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Keywords: ., bookcentury1900, bookdecade1910, bookidcu, booksubjectagriculture
