250 



THE POME FRUITS 



with Black Leaf 40 should be given in the spring. The 

 first spray should be applied just as the buds begin to open 



Fig. 110. — The pear showing injury to the blossom clusters due to the work of 

 the thrips. (After Parrott, New York Agricultural Experiment Station.) 



and the second just after the petals fall. Black leaf 40 

 at the rate of 1 pint to 100 gallons of water to which has 

 been added 5 pounds of soap is the proper spray material. 



