34° 



Scurfy scale. 



(Fig. ISO.) 



Leaf 

 blister-mite. 



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

 encrusts the' bark, giving it a scurfy appearance. It hiberr 

 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 

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

 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 eggs 

 Apple tent- are glued in ring-like brownish masses (Fig. 151) 

 caterpillar. around the smaller twigs where they may be 

 easily found and destroyed. The caterpillars 

 appear in early spring, devour the tender leaves, and build un- 

 sightly nests on the smaller branches. This pest is usually con- 

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

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



Fig. I SI ■'Egg- 

 ring of apple 

 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 Fig. 152. Beetle of plum 

 beetles. Cornell Bulletin 235. curculio. Enlarged. 



m^^ 



^* ' mtm .-A. 



CHERRY. 

 Early in the season these dark brown plant-lice curl the term- 

 Aphis ^"^^^ leaves, especially of sweet cherries. Spray with kerosene 



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

 tion if necessary. 

 Plum curculio. See under plum. 



Quince 

 curculio. 



QUINCE. 



This curculio is somewhat larger than that infesting the plum 

 and differs in its life-history. The grubs leave the fruits in the 

 fall and enter the ground where they hibernate and transform 

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



