New York Agricultural Experiment Station. 381 



many of the seedlings die before winter sets in, and those that sur- 

 vive the winter, are mostly too small to work the next season. On 

 pear stocks in particular, where the blight has been severe, it attacks 

 the green tips of the twigs. Here it forms small dark pits where 

 the disease lives over winter and spreads the infection to the first 

 leaves that appear in the spring. 



Remedy. — Encouraging results in treating this trouble on pear 

 stock have been obtained in experiments at this Station. Bordeaux 

 mixture, 1 to 11 formula, thus far has given best results. This 

 treatment has also given good results in some of the Geneva, N. Y.y 

 nurseries. It is suggested that treatranet be given as soon as the 

 first leaves become fully expanded, following with other treatments 

 at intervals of from ten to fourteen days, making five or six treat- 

 ments in all. Similar treatment is recommended for pear seedlings, 

 beginning as soon as the first leaves unfold. 



Bud Moth. — This insect, described as attacking apples also, is 

 treated as described under apples. 



Slug. — This insect attacks the leaves, sometimes doing considera- 

 ble injury. It may be fought by dusting with air slaked lime or 

 spraying with Paris green at the rate of one pound to from one hun- 

 dred and fifty to two hundred gallons of water. 



Pluvi. 



Leaf Blight. — This is caused by the same fungus which causes 

 cherry leaf blight above described. The remedies there advocated 

 have given good results in treating plums. In 1893 trees making 

 their second season's growth from the bud were successfully treated 

 with two applications of Bordeaux mixture, 1 to 1 1 formula, one given 

 about the middle of June the other about the middle of July.^® 

 Directions for using this mixture are given in article 4 on Fun- 

 gicides and Insecticides. 



Aphis, Plant Lice. — Give same treatment as for plant lice on 

 cherry as advocated above, 



Qidnce. 



Leaf Blight. — This is caused by the fungus that causes pear leaf 

 blight, the treatment of which is given above, on this page. 



16 Annual Report of this Station. 1893 ; 688. 



