1903.] 



PUBLIC DOCUMENT — No. 38. 



121 



Sulfate and Muriate of Potash compared as Fertilizers for Gar- 

 den Cru2)s. — Yield i^er Plot {^Poxinds) . 



In the discussion of the relative standing of these two 

 potash salts, the same crops are included^ respectively under 

 the headings early and late as those specified in section A. 

 The relative standing of these two salts at the beginning 

 of the present year is shown in the following table : — 



Fertilizers. 



Earlj- Crops 

 (Percent.). 



Late Crops 

 (Percent.). 



Sulfate of potash, 

 Muriate of potash, 



100.0 

 92.6 



100.0 

 103.0 



Including the crops of the past year, the relative stand- 

 ing of the two potash salts is as follows : — 



Fertilizers. 



Earlj' Crops 

 (Percent.). 



Late Crops 

 (Percent.). 



Sulfate of potash, 

 Muriate of potash, 



100.0 

 93.2 



100.0 

 102.9 



Attention is called to the fact that the results of this year 

 are in exact accord with those of earlier years. The sulfate 

 of potash proves considerably superior to the muriate for 

 the crops making most of their growth early in the season, 

 while for those making their growth in the latter part of the 

 season the muriate is slightly superior. 



V. — Comparison of Diffekent Potash Salts for Field 

 Crops. (Field G.) 

 Since 1898 the following potash salts have been under 

 comparison for various field crops : kainite, high-grade sul- 

 fate, low-grade sulfate, muriate, nitrate, carbonate, and 



