Food for e ff ec t on foliage growth became more pronounced, and 



the sprayed trees assumed a more vigorous, green appear- 



x 7 8 ance than the check trees. The single tree that re- 

 ceived the 50 pounds of Nitrate of Soda applied to the 

 soil showed no greater vigor than the check trees. 



Both the row sprayed with Nitrate of Soda and 

 the check row received summer sprayings directed 

 toward the control of apple powdery mildew and of 

 codling moth and various other insect pests. While the 

 treatment of the two rows was not the same, there was 

 no essential difference in the results — that is, the crop 

 loss from codling moth and other insect pests did not 

 exceed 1 per cent, on either plat and there was no dam- 

 age to the fruit from summer spraying. It is therefore, 

 evident that the difference which showed up in the crop 

 production of the two rows must be attributed to the 

 winter Nitrate spraying. 



Crop Results 



The check row of seven trees, which received no 

 winter spraying but which was properly protected by 

 summer sprayings, produced 8 loose boxes of fruit at 

 picking time. On the other hand, the adjoining row, 

 sprayed in February with the solution of Nitrate of Soda 

 plus lye, produced a total of a little over 40 boxes. 

 Thus, the winter Nitrate spraying increased the crop 

 production to fully five times that of the unsprayed 

 row. Similar adjacent plats, which were winter- 

 sprayed with various crude-oil emulsions and soap 

 sprays, produced crops varying from 5 to 9 boxes 

 per plat. The single tree which received the 50 pounds 

 of Nitrate of Soda applied as a fertilizer gave no in- 

 creased production, whereas none of the trees in the 

 Nitrate-sprayed row failed to respond. 



Regarding the single, heavily fertilized tree, ^ it 

 might be stated that in addition to its showing no in- 

 crease in production, the tree bloomed no earlier than 

 normal, there was no improvement in the growth and 

 no change in its general appearance throughout the 

 growing season of 1912, and in the spring of 1913 it 

 came out normally and not differently from the other 

 trees in the same row, being one of the trees in a check 



