Farmers' Cyclopedia : Abridged Agricultural Records in Seven Volumes
The book Farmers' Cyclopedia : Abridged Agricultural Records in Seven Volumes was written by author United States Dept of Agriculture Here you can read free online of Farmers' Cyclopedia : Abridged Agricultural Records in Seven Volumes book, rate and share your impressions in comments. If you don't know what to write, just answer the question: Why is Farmers' Cyclopedia : Abridged Agricultural Records in Seven Volumes a good or bad book?
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When it is desired to spray for leaf-spot diseases only, the first application should be made about two or three weeks after the petals have fallen, and a second about seven weeks later. These two applications, if thoroughly made, will usually hold the foliage in good condition. Brown Spot, Frog Eye. — From a commercial standpoint this dis- ease is more injurious to the foliage of the apple than either the blight or scab fungus. The attacks of this enemy are entirely confined to the foliage of ...the tree. But its work is none the less to be dreaded on that account, for anything which lessens or interferes with the leaves or their functions affects the most vital portion of the plant. When seriously affected the trees appear as though the leaves had been parched and blanched by the sun, but close inspection shows that the diseased areas are more or less localized and that the first indi- cations of the disease are small brownish red spots which gradually enlarge, the center becoming lighter in color, and finally two or more DISEASES OF CULTIVATED PLANTS 457 diseased areas may run together forming a large irregular dead patch of tissue.
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