. Diseases of fruits and nuts. Fruit; Nuts. 34 California Agricultural Extension Service [Cir. 120 hole disease is given in table 3. Lime-sulfur or (to prevent fruit rot) plain sulfur, is efficient in control of brown rot but has frequently caused "sulfur sickness" in apricot trees, and is not safe to use. Sulfur sickness of apricots appears as yellowing of foliage, stunting of fruit, and fail- ure of trees to bloom normally the following year. Control of brown rot in apricots is mainly a matter of complete removal of mummies and blighted twigs of the preceding year and thorough spra
. Diseases of fruits and nuts. Fruit; Nuts. 34 California Agricultural Extension Service [Cir. 120 hole disease is given in table 3. Lime-sulfur or (to prevent fruit rot) plain sulfur, is efficient in control of brown rot but has frequently caused "sulfur sickness" in apricot trees, and is not safe to use. Sulfur sickness of apricots appears as yellowing of foliage, stunting of fruit, and fail- ure of trees to bloom normally the following year. Control of brown rot in apricots is mainly a matter of complete removal of mummies and blighted twigs of the preceding year and thorough spraying at just the. Fig. 18.—A, Powdery-mildew effect on green apricots. B, Apricots showing effect of frost or weather injury when fruit Avas young. right time in spring, especially when the fruit buds are almost showing white color. Too early and too late spraying are equally useless. In rainy seasons, blossom and twig blight, especially on susceptible varieties like the Blenheim, can only be prevented by two or more thorough spray- ings before the blossoms are fully open, beginning when the buds are swelling. If control methods are properly carried out every year, there will be less trouble in wet years when it is difficult to spray at the right time. Crown Gall, Root Knot.—See discussion under "Almond" (p. 7). The apricot root is very susceptible to this bacterial disease, caused by. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Smith, Ralph E. (Ralph Eliot), 1874-1953. Berkeley, Calif. : The College of Agriculture, University of California
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