1902.] 



PUBLIC DOCUMENT — No. 33. 



23 



crop ; and, even disregarding the lime, as the pound of 

 actual nitrogen at current prices for sulfate of ammonia 

 costs more than the same quantity at current prices for ni- 

 trate of soda, the latter is clearly economically preferable, 

 if simply equally effective. We have found it more so. 



B. — The Relative Value of Sulfate and Muriate of Potash 



for Garden Crops. 



The history of the plots where these two potash salts are 

 under comparison has been given under section A. The 

 crops are of course the same as those which have been named 

 under that section. Each potash salt is used on three plots, 

 i.e., with each of the three nitrogen fertilizers. The results 

 of the past year are shown in the following table : — 



Sulfate and Muriate of Potash compared as Fertilizers for Gar- 

 den Crops. — Yield per Plot (Pounds) . 



In commenting upon the results obtained in comparing 

 these two fertilizers last year, the following tables were pre- 

 sented : — 



Before Manure ivas used, — 1891-97. 



Fertilizer. 



Early Crops 

 (PerCent.). 



Late Crops 

 (PerCent.). 



Sulfate of potash, 

 Muriate of potash, 



100.0 

 91.5 



After Manure was used, — 1898-1900. 



Fertilizer. 



Early Crops 

 (PerCent.). 



Late Crops 

 (PerCent.). 



Sulfate of potash, 

 Muriate of potash, 



100.0 

 86.1 



100.0 



98.8 



