MAINE APPLE DISEASES. 39I 



of bordeaux mixture or lime-sulphur may be used. In the case 

 of lime-sulphur it should not be added till it is diluted ready to 

 apply. In experimental work and in the dryer climates of some 

 Western states one pound of lead arsenate has been found to be 

 sufficient for 50 gallons of spray, but in practice with average 

 farm conditions two to three pounds are usually required. 



HOW TO SPRAY. 



To do really good and effective work in orchard spraying 

 requires constant care and watchfulness on the part of the 

 operator, and also requires a certain amount of practice to 

 secure the best results. Thoroughness is very essential, but by 

 thoroughness is not meant drenching the tree. The spray 

 should be delivered with a constant, strong pressure, issuing 

 from the nozzle in a fine mist, the finer the better. The oper- 

 ator after a little experience will find that if he moves the 

 extension rod carrying the nozzles at the proper rate and the 

 right distance removed from the leaves he is enabled to cover 

 them thoroughly with a fine mist-like coating, provided the 

 proper type of nozzle is used, and there is no tendency for the 

 mixture to gather together in large drops on the leaves or drip 

 off from the edges. While avoiding applying enough of the 

 spray to cause dripping care should be taken to reach the foliage 

 and limbs on all parts of the tree. It is impossible to do thor- 

 ough spraying in trees which have not been properly pruned 

 and in which the tops are filled with water-sprouts and inter- 

 locking branches. 



