1911.] PUBLIC DOCUMENT — No. 31. 13 



tioii with slag- and muriate of potash has produced an increase 

 varying from 730 to 2,2G5 pounds per acre, the average being 

 1,283 pounds per acre. 



The figures above given have all referred to the first cro]3. 

 In years characterized by normal rainfall these fields have al- 

 ways produced a moderate crop of roweu, but the past two sea- 

 sons have been so abnormally deficient in rainfall that the rowen 

 crops have been small, — in some years, indeed, so small that 

 the fields have not been cut. The amount of rowen produced 

 on plots where nitrate of soda is used in connection with the 

 slag and potash has been less than where the slag and potash 

 alone have been used. This difference, it will be readily under- 

 stood, is due to the fact that clover is relatively more abundant 

 on those portions of the field where slag and potash alone are 

 applied. 



2. Slag Meal and Low-grade Sulfate of Potash both 



WITH AND WITirOUT NiTRATE OF SoDA. 



It has so happened that we have but few weights that can be 

 regarded as entirely reliable pertaining to the results on the 

 field where these fertilizers are employed ; but examinations 

 of the fields at various times have shown that the result of the 

 employment of slag and low-grade sulfate of potash alone has 

 been a remarkable increase in the proportion of white clover, 

 which has attained a height and luxuriance that the writer has 

 seldom seen equaled. The increase in crop resulting from the 

 application of this combination of fertilizers has clearly been 

 large. The employment of nitrate of soda in connection with 

 slag and low-grade sulfate of potash in amounts varying from 

 ir»0 to 2.^)0 pounds per acre on. different plots has resulted in a 

 very small increase. 



3. Slag Meal and High-grade Sulfate of Potash both 



WITH and without I^ITRATE OF SoDA. 



In one section of the field the plots top-dressed with slag and 

 high-gTade sulfate of potash have given a yield of hay during 

 the past three years varying from 2,732 to 3,860 pounds per 

 acre, the average being 3,3.51 pounds per acre. 



