. Fig. 1.—Gumming of almonds. hi-anc'hes to shake off the jackets as soon as they can be loosened. Spray- ing for brown rot and shot-hole may help. Bordeaux mixture 3-3-50 (p. 156) during full bloom has been suggested, also oil bordeaux (p. 157) wlien the bulk of the petals have fallen. Little-Leaf.—The foliage of trees affected by little-leaf develops in tufts or rosettes of narrow, yellow leaves, and the tree has a cliaracter- istically weak, sickly appearance. This disease, which affects many dif- ferent kinds of trees, is discussed at more length on page 141. The almond is one of the fruit
. Fig. 1.—Gumming of almonds. hi-anc'hes to shake off the jackets as soon as they can be loosened. Spray- ing for brown rot and shot-hole may help. Bordeaux mixture 3-3-50 (p. 156) during full bloom has been suggested, also oil bordeaux (p. 157) wlien the bulk of the petals have fallen. Little-Leaf.—The foliage of trees affected by little-leaf develops in tufts or rosettes of narrow, yellow leaves, and the tree has a cliaracter- istically weak, sickly appearance. This disease, which affects many dif- ferent kinds of trees, is discussed at more length on page 141. The almond is one of the fruit trees least susceptible to little-leaf, and the disease is not a serious factor in any of the main almond districts in California. Spraying the trees in the dormant season with zinc sulfate, 25 to 50 pounds to 100 gallons of water, gives good control of little-leaf in al- monds. Nonbearing.—When almonds regularly fail to produce crops, it is usually due to lack of a proper combination of varieties for cross-polli- nation. The county farm advisor or experienced local growers should be consulted in this matter. Frost injury must also be guarded against. For further information see Extension Circular 103 (mentioned in foot- note 4, p. 6). Oak-Root-Fungus Disease, Armillaria Root Rot.—When this dis-
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