Food for W ould be apt to meet the maximum requirements. 



Plants Hence, in practice savings may be effected if the farmer 



116 is careful to study his range of yields for a period of 



years, without manure, as well as the range of yields 



under high fertilization, in order to determine the most 



economical amount of Nitrate to apply. 



The main results, however, lead to the conclusion 

 that Nitrate of Soda is a most useful form of Nitrogen 

 for oat and pea forage, and that it pays directly even on 

 relatively low-priced crops to apply as high as 300 

 pounds per acre, and indirectly in permitting of the 

 sale of a larger quantity of marketable hay at high 

 prices. 



Field Experiments with Nitrate of Soda 

 at Highlands Farms 1908. 



In the spring of 1908, other experiments were 

 planned and carried out for the purpose of studying 

 two fundamental questions: — First, whether it would 

 pay to use Nitrate of Soda; and second, whether it 

 would pay to make more than one dressing. It was also 

 planned that the applications of Nitrate should be such 

 as to encourage the practical farmer to begin its use — 

 that is, not to use a larger dressing than he would be 

 willing to purchase, and thus make the work educa- 

 tional in two directions. 



Six experiments were planned with the following 



crops : — 



Oats and peas Timothy hay 



Oats Field corn 



Barley White potatoes 



and in each experiment six plots, one-tenth of an acre 

 in area, were used; these plots were separated by strips 

 five (5) feet wide, which were cultivated and kept free 

 from weeds. 



In all cases, except for potatoes, the following min- 

 eral fertilizer was applied at the rate of 300 lbs. per 

 acre, spread broadcast and well harrowed into the soil : — 



Ground bone 100 lbs. 



Acid phosphate 200 



Sulphate of potash 100 





