. The encyclopedia of practical horticulture; a reference system of commercial horticulture, covering the practical and scientific phases of horticulture, with special reference to fruits and vegetables;. Gardening; Fruit-culture; Vegetable gardening. 2016 ENCYCLOPEDIA OP PRACTICAL HORTICULTURE. Fig. 2. Adults of the Walnut Caterpillar. Female above, Male below. (Original.) nut caterpillar to do serious damage in the same place two successive years. E. M. Bentley, Knoxville, Tenn. Walnut Mealy Bug Pseudococcus hakeri Essig General Appearance Slightly larger than the citrus and long-tailed spec
. The encyclopedia of practical horticulture; a reference system of commercial horticulture, covering the practical and scientific phases of horticulture, with special reference to fruits and vegetables;. Gardening; Fruit-culture; Vegetable gardening. 2016 ENCYCLOPEDIA OP PRACTICAL HORTICULTURE. Fig. 2. Adults of the Walnut Caterpillar. Female above, Male below. (Original.) nut caterpillar to do serious damage in the same place two successive years. E. M. Bentley, Knoxville, Tenn. Walnut Mealy Bug Pseudococcus hakeri Essig General Appearance Slightly larger than the citrus and long-tailed species. Does not secrete as much cottony covering and has tails half as long as the body. Life History Eggs are deposited in loose masses sim- ilar to those of the citrus mealy bug. Does not multiply nearly as rapidly as the other species. Food Plants Walnut, apple, pear and lemon. Works under the bark and in crevices upon the tender cambium layer. Control Spray with carbolic acid emulsion under 200 pound pressure. Walnut Moth Ephestia elutella Hubn. This insect is recorded as being cosmo- politan in distribution, but so far we have no account of its being established in this country, but it is likely to be imported from Asia. It is a serious pest in its na- tive haunts. Walnut Scale Aspidiotus juglans-regiae Com. H. P. Wilson This insect is found in two or three lo- calities of Oregon, but as it has never been a serious pest in other sections of the United States where walnuts are grown, we do not believe that spraying will be necessary for some time. The scale of the female is circular, flat, with the nipple slightly out of the center. The major part of the scale is pale grayish brown, with the nipple reddish brown, diameter of scale .13 inch. The scale of the male resembles that of the female in color, but is elongated and is narrower. Length of scale .05 inch. Kemedy Lime-sulphur as used for San Jose scale may be used with success when trees are dormant. Weevil. See Pecan Pest
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