100 



QUINCE CULTURE. 



phor. Downing advises to heap ashes or lime about the 

 collar of the tree. He would protect nurseries by wash- 

 ing young trees with a solution of a pound of potash to a 

 gallon of water. 



If the larvae have already got into the trees they should 

 be dug out or destroyed in their holes. Annealed wire 

 or small strips of whalebone have been found useful to 

 run into the holes. Besides the summer examinations, 

 it is well to look over the trees in the fall and winter to 

 make sure the larvae are not in them. 



2. THE QUINCE SCALE (Aspidiotus Cydonice, Corn- 

 stock). This is an enemy found on quince trees in 

 Florida. The scale is gray, and somewhat transparent. 

 The shape is convex and the size only about six hun- 

 dredths of an inch across. The remedy is a strong solu- 

 tion of potash or soft soap, applied with a swab or brush. 



3. THE WOOLLY APHIS (Aphis lanigera or schizoneura, 

 Hausmann). The downy plant lice, now placed in the 



genus Eriosoma, are among the 

 most destructive species. This 

 aphis was imported on fruit trees 

 from Europe, and yet in England 

 it is called the American Blight. 

 It is most commonly found on 

 apple trees in the colder sec- 

 tions. It was on the quince tree 

 in an apple orchard at Northamp- 

 ton, Massachusetts, where it at- 

 tracted my attention some years 

 ago. The tree had numerous 

 shoots like those that spring up around apple trees, and 

 these were abundantly infested. I am thus particular in 

 giving the location, as I have not seen it on quince trees 

 farther south, and have not seen any notice of it on the 

 quince by other writers. It may be readily recognized 

 by the woolly covering from which it takes its name. 



Fig. 70. WOOLLY APHIS. 



