. Fruit diseases and how to treat them!. FiG. 19.—Black knot. FRUIT DISEASES AND HOW TO TREAT THEM. 223 e^w^;^. .Ml^A^^.:~ .-a;.^ FiC4. 20—Ulack tiou it will be found that the surface is covered by minute eleva-tions. During warm, moist periods, or just before ripening, a closewatch should be kept for an indication of the disease. The firstintimation that it is present should be followed by an immediateapplication of Bordeaux Mixture. The safest plan to follow here, where the Downy Mildew andBlack Kot are both so liable to occur, is to begin treatment withBordeaux Mixture early in the se
. Fruit diseases and how to treat them!. FiG. 19.—Black knot. FRUIT DISEASES AND HOW TO TREAT THEM. 223 e^w^;^. .Ml^A^^.:~ .-a;.^ FiC4. 20—Ulack tiou it will be found that the surface is covered by minute eleva-tions. During warm, moist periods, or just before ripening, a closewatch should be kept for an indication of the disease. The firstintimation that it is present should be followed by an immediateapplication of Bordeaux Mixture. The safest plan to follow here, where the Downy Mildew andBlack Kot are both so liable to occur, is to begin treatment withBordeaux Mixture early in the season as mentioned underDowny Mildew and keep it up until the fruits show indicationsof rii^ening when Ammoniacal Carbonate of Copper should besubstituted for the Bordeaux Mixture to prevent staining of thefruits. 2:24 WEST VIRGINIA EXPERIMENT STATION. Oowny MLildew; Browu Kot. {^Peronospora v it kola De.) Of the two mildews affecting the vine in this country theDowny Mildew is of the greater economic importance. It isanother of the long list of pests of this character which attackboth the fruit and vital
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