APPI.K (JRoWIXi; IX CALIFORNIA. 91 



almost immediately. At this time they have only six legs, the fourth 

 pair being developed as soon as they moult for the first time, and the 

 color lum^s from red to greenish. There are several generations 

 iliirinir tin- summer season, but usually the mites do not become abund- 

 ant enough t< seriously damage the apple trees. 



Lime-sulphur, applied at the strength of 1 part to 10 parts of water, 

 during the dormant season, just before the buds begin to swell, is an 

 ert'ertive remedy. Either atomic or milled sulphur, during the summer 

 season while feeding is going on, is also valuable in controlling it. 

 Sulphur in any form is a good mite remedy as a general rule. 



Blister Mite. 

 (Eriophyes pyri.) 



While this is primarily a pear pest it is sometimes found injuring 

 apple foliage, also, to a considerable extent. It may be recognized by the 

 blister-like patches on the surface of the leaves. The winter season 

 is spent under the bud scales of both apple and pear. In the early 

 spring the mites leave their hibernating quarters, the females deposit- 

 ing eggs in the leaves, from which hatch the tiny larva?, which im- 

 mediately begin feeding and produce the characteristic appearance 

 already mentioned. This pest may be controlled by an application of 

 lime-sulphur just as the buds are beginning to open in the early spring. 



