THE FRUIT PLANTATION 



Bonne, Anjou, Clairgeau and Lawrence are most popular, 

 but many other varieties thrive on the quince. 



INSECTS AND DISEASES OP THE PEAR. In addition to the 

 attack of the cherry-tree slug, codlin-moth, and various 

 insects common to other fruits, the foliage of the pear is 

 attacked by a leaf -mite (Phytoptus) and the pear tree 

 psylla, although neither are commonly troublesome over a 

 wide range of country. The latter yields readily to a 

 thorough application of kerosene emulsion, applied just 

 before the leaves open in the spring. 



The most common and destructive disease of the pear 

 is fire -blight. This is of a bacterial nature, and may 

 appear upon the trunk, branches, or 

 foliage, and if allowed to spread, 

 will generally kill the trees. A form 

 known as twig-blight attacks the 

 branches, but seldom spreads to the 

 trunk. It is least troublesome upon 

 slow-growing varieties, and where 

 there is not an excess of organic 

 matter in the soil. If an excessive 

 growth can be avoided, the danger 

 will be reduced. The blight mani- 

 fests itself upon the growing shoots 

 by the discoloring of the bark and 

 underlying wood, and by the brown- 

 ish-black color of the foliage. There 

 21;>. Kieffer. 



is no known remedy, but as soon as 



the disease shows itself the affected portions should be 

 removed, taking care to cut several inches below where 

 any signs of the disease appears. 



The foliage of the pear is also attacked by a fungous 

 disease known as leaf-blight, which causes the leaves 

 to drop prematurely; the same disease also affects the 

 fruit, causing it to crack and become misshapen. The 

 use of Bordeaux mixture, as recommended for apple- 



