CONTROL SERIES BULLETIN No. 20 NOVEMBER, 1922 



MASSACHUSETTS AGRICGLTURAL EXPERIMENT STATION 



INSPECTION OF COMMERCIAL FERTILIZERS 



By H. D. Haskins, L. S. Walker and R. W. Swift 



The fertilizer trade in Massachusetts for the 1922 season showed an 8 per 

 cent increase in tonnage over that of the 1921 season. This measures a certain 

 degree of increased activity on the farms of the State. The consumption of 

 low-analysis mixed fertilizers was but 17 per cent of the total consumed in 

 the State, as compared with 28 per cent for the 1921 season. Of the several 

 grades of mixed fertilizer consumed, the " 4-8-4 " is once again the leader, with 

 a tonnage of 10,968, or practically one-sixth of the total fertilizer tonnage used 

 in the State. This is a gain of slightly more than 10 per cent compared with the 

 previous season. The " 5-4-5 " tobacco grade is the second in favor. Of the 

 mixed fertilizer tonnage, 71 per cent v/as confined to 10 grades, which indicates 

 that the Nation-wide movement to eliminate unnecessary, uneconomical and 

 unreasonable grades of mixed fertilizer is having effect. 



Requests for bulletins should be addressed to the 



AGRICULTURAL EXPERIMENT STATION 

 AMHERST, MASS. 



