274 



NEBRASKA STATE HORTICULTURAL SOCIETY. 



abundant in some of the orchards. In many instances from 50 per cent 

 to 75 per cent of the leaves of unsprayed trees was on the ground early 

 in October, and in some cases trees were at that time almost completely 

 defoliated. A peculiar occurrence was observed in this connection in 

 several of the orchards. The heavy frosts of early October injured the 

 foliage of unsprayed trees much more than that of sprayed ones. In 

 numerous instances the leaves that still remained on the unsprayed trees 



Fie. 1. "VViiu'SMp apple tree in the Tecumseli 

 oichard, sprayed five thiies. Foliage practically 

 uninjured by disease on October 18, 1906. 



were entirely killed by the frosts, while the foliage of adjoining sprayed 

 trees was bright green and practically free from frost of fungus injury. 

 Figures 1 and 2 show adjoining Winesap trees in the Tecumseh orchard, 

 one sprayed and the other not sprayed, as they appeared early in Octo- 

 ber. Figures 3 and 4 show sprayed and unsprayed Ben Davis. Missouri 

 Pippin, and Winesap trees in another part of the same orchard. 



YIELD AND VALUE OF SPRAYED AND UNSPRAYED FRUIT. 



An exact record was made of the yield of a part of the sprayed and 

 unsprayed trees in each of the six orchards. In selecting the trees from 



