4 BULLETIN NO. 30 



Two men may apply the spray. They should spray the nearest 

 third of the tree opposite them in the row, then they drive the 

 outfit forward a few feet that they may spray the remainder of 

 the first two trees and the first third of the second two trees. 

 This method is continued until the end of the row is reached 

 when the outfit is turned down the second row. Spray a third 

 of the tree each time even if the sprayings overlap. It is poor 

 economy to miss poisoning any calyx cups. 



Inspection. Somewhat later an examination of the orchard 

 will show whether ten per cent of the apples are wormy. If the 

 spraying is done right there should not be ten per cent of wormy 

 apples in the orchard. If there are more than this number, a 

 third spraying should be applied about fifty days after the 

 first brood of moths are thickest in the orchard, about the first 

 of August. This should be a fine mist spray applied with a much 

 lower pressure than the previous sprayings. Several types of 

 nozzles giving a cone-shaped, whirling spray have been used by 

 this department with entire satisfaction. The object is to cover 

 the fruit with a fine coating of poison. 



Banding: Strips of burlap about twelve inches wide are 

 folded once lengthwise so that the inner fold of the band is about 

 four inches wide, then with the folded edge at the top, wrap the 

 band twice around the tree about a foot above the ground and 

 hold it in place with a tack. These bands should be drawn rather 

 tightly around the upper edge and allowed to hang somewhat 

 looser at the lower edge. The larvae coming down from the tree 

 will crawl over them and up underneath them. The bands 

 should be put on about the time the first few worms begin com- 

 ing down from the tree (July first) . This will be about twenty- 

 five or thirty days after the eggs are laid for the first brood. The 

 bands should be taken off and examined every seven or eight 

 days and the bands should be replaced after each examination. 

 All the first brood of worms come down by the last of August. 

 All the worms under the bands should be killed. After August 

 the bands may be left on until the apples are picked ; then they 

 should be taken off and all the late second brood worms found 

 under them should be killed. The bands can now be put away 

 for the winter. 



Besides these methods of control, the orchardist should ex- 

 amine the rough bark of each tree and into all cracks and 

 crevices to kill the larvae that may be hidden there. Old bark 

 should be scraped from the tree as it will, if left on, afford 

 protection for the worms. Birds, ants, beetles, and some para- 

 sitic bees prey upon the eggs and worms and assist in the natural 

 means of control. 



College Series No. 84 



