FERTILIZER CONTROL STATION. 



303 



As before, the average rate of yield of the plots per acre is cal- 

 culated. The results follow. 



Kind of Fertilizer. 



Nothing 



Dissolved bone black. 



u 



O 

 >> O 



So© 



400 



5 Dissolved bone black i 400 



I Muriate of potash 



Dissolved bone black.. 

 Muriate of potash — 

 Sulphate of ammonia. 



Dissolved bone black. 

 Muriate of potash.. .. 



Sulphate of ammonia 



Dissolved bone black.. 

 Muriate of potash .. ,. 

 Sulphate of ammonia 



100 



200 

 50 

 60 



300 

 100 

 120 



400 

 150 



180 



Yield Per Acre. Gain Over Plots 

 Average of Three Receiving no 

 Plots. Fertilizer. 



Grain. 



bush. 



52.5 

 55.2 



54.3 

 57.5 



09. 



68. 



Straw, 

 lbs 



2,394 



2,856 



3,276 

 3,006 



3,570 



3,994 



Grain, 

 bush. 



2.7 

 1.8 



5.0 

 16.8 

 15.8 



Straw, 

 lbs. 



462 

 882 



612 

 1,176 

 1,600 



(1). The complete fertilizer gives the largest yield, so also does 

 the largest quantity of the complete fertilizer. The increase in yield 

 is not in proportion, however, to the increase in the quantity- of fer- 

 tilizer. 



Field Experiments with Fertilizers by Farmers. 



In the spring of 1886, the Station sent to farmers located in dif- 

 ferent parts of the State experimental sets of fertilizers, which were 

 to be used according to certain directions given by the Station, the 

 results of the experiments to be reported to the Station. 



The objects in view in cooperating with farmers in this sort of ex- 

 perimental work were the following : 



(1). To stimulate habits of inquiry and observation. 



(2). To render farmers more familiar with the composition of fer- 

 tilizers. 



(3). To add something, if possible, to our stock of knowledge in 

 regard to the profitable use of commercial fertilizers. 



It was hoped to secure these results not only through the observa- 

 tions and experience of the farmers conducting the experiments, but 

 also through the interest that the experiments might excite among 



