19 



of potash. From 125 to 150 pounds of a high-grade potash 

 salt per acre, applied in connection with manure to the pre- 

 vious crop, will almost invariably largely increase the pro- 

 portion of clover in the hay crop when the land is seeded. 

 If fertilizers alone are used for the preceding hoed crops, 

 these must be rich in potash if clover is to thrive w^hen the 

 land is seeded. 



Upon the college farm at Amherst we have for about thir- 

 teen years applied potash to two plots of one-quarter acre 



Clover on Muriate of Potash makes a Poor Growth. 



each at the rate of about 250 pounds per acre of a high- 

 grade potash salt. To two other plots the same salt has 

 been applied at the rate of about 150 pounds per acre. 

 When this land is seeded, the hay crop where the larger 

 amount of potash is used is considerably larger and contains 

 a much greater proportion of clover than where the smaller 

 quantity of potash is used. In 1902 the larger application 

 of potash gave a yield at the rate of 6,772 pounds per acre; 

 the smaller application of potash yielded at the rate of 5,252 

 pounds per acre. For a full understanding of the conditions 

 in this experiment, it should be further stated that the 



