. Cyclopedia of American horticulture, comprising suggestions for cultivation of horticultural plants, descriptions of the species of fruits, vegetables, flowers, and ornamental plants sold in the United States and Canada, together with geographical and biographical sketches. Gardening. 494 DISEASES DISEASES use of remedial measures until after the fungi are in evidence. With many quick-acting diseases it is then too late, and in fact with some the spray pump, when the trees are in full leaf and fruit, is of secondary impor- tance. The fruit-rot or gray mold (Monilia fruetigena) of the cherry,
. Cyclopedia of American horticulture, comprising suggestions for cultivation of horticultural plants, descriptions of the species of fruits, vegetables, flowers, and ornamental plants sold in the United States and Canada, together with geographical and biographical sketches. Gardening. 494 DISEASES DISEASES use of remedial measures until after the fungi are in evidence. With many quick-acting diseases it is then too late, and in fact with some the spray pump, when the trees are in full leaf and fruit, is of secondary impor- tance. The fruit-rot or gray mold (Monilia fruetigena) of the cherry, plum and peach is of this type. To eradi- cate this pest, it is not enough to wait until the disease is in the trees, for then, if the weather is warm and moist, the crop is destroyed. Here, again, the work of prevention should begin the winter before; by destroy- ing all mummy fruit (Fig. 722) and blighted branches the disease is attacked at its weakest point. Another point in this connection that must be kept in mind is the general health of the plant. Every tree or shrub should be well nourished and come to its ap- pointed task in good health. This means the best form of the plant for the purposes intended, obtained by the use of the pruning knife or other means. Fungi do not love the sunshine half as well as the shade, and an open-topped tree needs less spraying than one with the branches crowded. This will also obviate in some measure another point of weakness, namely, overload- ing. A peach tree attempting to carry a double comple- ment of fruit will breed more decayed fruit and foliage than many that are not overloaded. Thinning, in other words, is often as essential to healthfulness as spraying, and a congenial soil and situation are more important than either. Naturally, the question of remedies for fun- gous diseases comes in only after ail the conditions for the best growth of the plants have been met. The number of fungi injurious to the horticulturist is large, an
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