i8o Bulletin 252. 



This whitish pear-shaped scale, about I inch in length, often 

 Scurfy scale, encrusts the bark, giving it a scurfy appearance. It hiber- 

 (Fig. 150.) nates as purplish eggs under the old scales. Spray as recom- 

 mended for oyster-shell scale. 



The presence of this minute mite is indicated by small irregular 



Leaf brownish blisters on the leaves. Spray in late fall or early 



blister-mite, spring with kerosene emulsion, diluted with 5 



parts of water, or miscible oil, i gal. in 10 gals. 



of water. Geneva Bulletin 283. 



Round-headed The only practicable method of control is to dig 



borer, out the borers or to kill them with a wire. 



The insect hibernates in the egg stage. The 

 Apple tent- eggs are glued in ring-like brownish masses 

 caterpillar. (Fig- 151) around the smaller twigs where they 

 may be easily found and destroyed. . The cater- 

 pillars appear in early spring, devour the tender leaves, and build Fig. 151. Egg- 

 unsightly nests on the smaller branches. This pest is usually con- ringof apple 

 trolled by the treatment recommended for the codling-moth. De- 

 stroy the nests by burning or by wiping out when small. 



tent -cater- 

 pillar. 



PLUM AND PRUNE. 



The adult is a small snout-beetle (Fig. 152) that inserts its eggs 

 Plum under the skin of the fruit and then makes a characteristic 



CUrculio. crescent-shaped cut beneath it. The 

 grub feeds within the fruit and 

 causes it to drop. When full grown it enters the 

 ground, changes in late summer to the beetle, which 

 finally goes into hibernation in sheltered places. Spray 

 just after blossoms fall with arsenate of lead, 6 to 8 lbs. 

 in 100 gals, of water, and repeat the application in 

 about a week. After the fruit has set, jar the trees 

 daily over a sheet or curculio-catcher and destroy the pjg. jr2 Beetle of plum 

 beetles. Cornell Bulletin 235. curculio. Enlarged. 



CHERRY. 



Early in the season these dark brown plant-lie*^ curl the term- 

 inal leaves, especially of sweet cherries. Spray with kerosene 

 ApniS. emulsion diluted with 6 parts of water. Repeat the applica- 



tion if necessary. 

 Plum curculio. See under plum. 



QUINCE. 



This curculio is somewhat larger than that infesting the plum 



Quince and differs is its life-historj-. The grul^s leave the fruits in the 



curculio. f^ll <i"<:l enter the ground where they hibernate and transform 



to adults the next May, June or July, depending on the season. 



