Horticulture, a text book for high schools and normals, including plant propagation; . codling moth? 2. How can you combat apple tree borers? 3. What remedies are used for canker worm? For tent caterpillars? 4. For what troubles in the orchard are poisons used with lime-sulfur . 5. Give remedies recommended for twig blight? 6. Describe the disease called frog-eye? 7. Describe the effects of curculio attacks on apples? References.—U. S. Farmers Bulletins: 662, Apple Tree Tent Caterpillar;675, Round-headed Apple Tree Borer; 938, Apple Bitter-Rot and Its Control;1056, Fungous and Insect Enemies o
Horticulture, a text book for high schools and normals, including plant propagation; . codling moth? 2. How can you combat apple tree borers? 3. What remedies are used for canker worm? For tent caterpillars? 4. For what troubles in the orchard are poisons used with lime-sulfur . 5. Give remedies recommended for twig blight? 6. Describe the disease called frog-eye? 7. Describe the effects of curculio attacks on apples? References.—U. S. Farmers Bulletins: 662, Apple Tree Tent Caterpillar;675, Round-headed Apple Tree Borer; 938, Apple Bitter-Rot and Its Control;1056, Fungous and Insect Enemies of Pear; 1065, Flat-headed Apple TreeBorer; 1120, Apple Powdery Mildew Control; 1128, Aphid Control; 1160,Diseases of Apples in Storage. CHAPTER XVIII THE PEACH ORCHARD The peach is probably the most popular orchard fruit in America,and yet the regions where it is grown cominercially are muchmore limited than for the apple (Fig. 129). The largest peachorchards are found in the southern states and along the Atlanticand Pacific coasts where the climate is modified by large bodies of. UNITED STATES PEACHES TREES OF BEARING ANDNOT OF BEARING AGE APPROXIMATE ACREAGEEACH DOT REPRESENTS 500 ACRE Fig. 129.—About three-fourths of the peach trees are south of the Ohio and MissouriRivers and in California. Low winter and spring temperatures occur so frequently northof a line from Chicago to Cheyenne that the production of peaches becomes unprofitable. water and along those shores of the Great Lakes where the pre-vailing winds tend to modify the climate enough. The peach isalso grown commercially along the Allegheny Ridges, where theair drainage is sufficient to prevent serious damage to the blossomsfrom late spring frosts. Location and Exposure.—In selecting the location for the peachorchard we must give the utmost attention to the question of airdrainage. The peach tends to blossom so early in the spring thatthe late spring frosts will kill the pistils and ruin the crop for that 203
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