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 Pests, 



White Peach Scale. See Peach Pests. 



Washington 



Washington is divided into two distinct 

 sections by the Cascade range of moun- 

 tains, and these sections are as different 

 in their general characteristics as if they 

 belonged to different zones. On the west 

 of the mountains the state is heavily tim- 

 bered for the most part, with plenty of 

 rainfall for the growing of crops, a cli- 

 mate charged with moisture during most 

 of the year, and a glacial soil formation. 

 East of this range the soil is a volcanic 

 ash, or disintegrated basaltic rock, arid 

 or semi-arid in the eastern part, covered 

 with sage brush and bunch grass, and 

 crops cannot be grown without irrigation, 

 except along the streams and on the high 

 elevations, as in the extreme eastern part 

 of the state, where the rainfall is suffi- 

 cient for the growing of wheat, certain 

 kinds of fruits, potatoes and other crops. 

 For greater convenience the state, has 

 sometimes been divided into four parts. 

 The first, along the coast between Puget 

 sound and the Pacific ocean, including the 

 Olympic mountains. This is rough and 



