AGRICULTURAL EXPERIMENT STATION. 135 



Tables D and E show that all of the fertilizers have had an 

 effect on the oat crop of the present year, and that the complete 

 fertilizers have produced the largest yields. 



An examination of the total crops of the entire period, as shown 

 in Table F, reveals the fact that what has been found true of this 

 year's oat crop is also true of the combined oat crop and hay crop, 

 i. e. that the largest yields have been produced by complete ferti- 

 lizers. 



Examining the results furnished by the crop of peas, we find 

 that muriate of potash and sulphate of ammonia produced practi- 

 cally no effect ; that dissolved bone black alone caused an increase 

 of nearly 13 per cent; and that dissolved bone black and muriate 

 of potash caused an increase of 28 per cent, in the crop, which 

 was not added to by the complete fertilizers. The results obtained 

 from these experiments add weight to the prevailing idea that on 

 an ordinary soil peas do not require nitrogenous manures. 



SUMMARY. 



The experiment brings out strongly the fact3: 

 (1.) That for the soil on which it was conducted, phosphoric 

 acid and nitrogen are of value as manures. 



(2 ) That phosphoric acid and potash are the most impor- 

 tant fertilizing elements for peas. 



The Comparative Effect of Different Amounts of Fertilizers. 



The object of this experiment is to study the limitations of the 

 profitable use of commercial fertilizers. It must be remembered, 

 however, that the work carried out on the college farm does not 

 necessarily have a general application. But in view of the 

 fact of the increasing use of commercial fertilizers, not only 

 in this State but throughout the whole country, it is desirable to 

 point out the existence of limitations, if there are any, that farmers 

 may, in making their plans for carrying on their business, take 

 them into consideration. 



Tables G and H give the results of this year's cropping of the 

 plots devoted to this purpose. Table I gives the results for the 

 entire period together with the total value of crop, oats reckoned 

 at 45 cents per bushel, hay at $10.00 per ton and peas at SI. 25 

 per bushel. These values for the crop are liberal. The fer- 

 tilizers have been reckoned at wholesale prices, dissolved bone 





