These results almost without exception seem to warrant 

 the conclusion already expressed that potash and not phos- 

 phoric acid is the controling factor. 



Experiments made in other parts of the state, on soils dif- 

 fering greatly from the Connecticut river land show even more 

 marked results. 



In the preceding cut I have represented the value of the 

 three crops from each group of fertilizer as given in table on 

 page 17. The lines represent dollars, one inch equaling $40, or 

 ^ inch $5.00 



Value of nitrogen from different sources. 



The three acre experiment, the plan of which is given on 

 page 12 was planned primarily to test manure applied in spring 

 and fallj'but'each acre was divided into four sections, and these 

 were fertilized as follows : 



Table G. 



Section i, 800 hills, \ Krugit. 



( Sulphate of ammonia, 



5th acre. < 



Section 2, 800 hills, 



Section 3, 800 hills, 



Section 4, 800 hills, 



Dissolved bone-black, 



Krugit 



Dried blood. 



Dissolved bone-black, 



Krugit, 



Nitrate of soda, 



Dissolved bone-black, 



Krugit, 



Sulphate of potash, 



lbs. 



{ Dissolved bone-black, 25 



s 



25 

 zz 



25 



33 

 7 



25 

 ZZ 

 10 



ao 



