260 



PESTS OF ORCHARD AND SMALL FRUITS 



Sprajnng with lime sulphur in winter, as for San Jose scale, will 

 control this pest. 



The Rose Scale (Aulacaspis rosce Bouche) 



Roses, blackberries, and raspberries frequently become infested with 

 white scales which cover the canes. The individual scales, when full 

 grown, are about one tenth of an inch long, thin, flat, and snowy white. 

 ^^ There may be three or more generations in a year. 



MM Judicious pruning will help to hold them in 



/^\ check. Lime sulphur may be used as a winter 



-^B spray. Or, spray in winter with whale-oil soap, 



^H 1 pound to 1 gallon of water. 



I 



The Cottony Maple-scale {Pulvinaria vitis Linn.) 



This large and easily recognized scale attacks 

 grape vines and various fruit and shade trees. 

 It is conspicuous in early spring, when the fluffy, 

 cottony secretion containing the eggs is pushed 

 out from under the body of the female. There 

 is one generation annually, the female over- 

 wintering on the bark. 



The means of control is to spray with 10 per 

 cent kerosene emulsion when the young are 

 hatching in the spring. 



The European Fruit Lecanium 



{Lecanium corni Bouche) 



The smaller limbs and twigs of fruit trees are 

 Fig. 355.— Cottony attacked by a species of large scale, one eighth 

 ijj^j ' of an inch long and nearly hemispherical. When 



young, it is yellowish, but when older, is dark 

 and shiny. The upper surface of the insect is hardened, thus pro- 

 tecting the softer parts beneath ; in other words, the scaly covering 



