2. In a large majority of the experiments tried in difterent parts 

 of the state similar results were obtained. 



Our conclusions for corn, then, stated with reference to the ques- 

 tions proposed are : — 



1. This crop profits particularly from an application of potash 

 salts. 



2. The so-called " special " fertilizers for corn offered in Massa- 

 chusetts markets are not rightly compounded. The average of such 

 fertilizers in 1897 was : Nitrogen, 2.80 per cent. ; phosphoric acid, 

 J 1.31 per cent ; potash, 3.57 per cent. The best contained : Nitro- 

 gen, 4.04 per cent; phosphoric acid, 1 1.80 per cent ; potash, 9.94 

 per cent. I would suggest the following proportions : Nitrogen, 

 3 ; phosphoric acid, 4, and potash, 11. 



3. The use of phosphates to supplement natural supplies of man- 

 ures is not wise and does not promise to insure largest crops at least 

 cost. 



With Oats: — Oats occupied the land in 1891, following corn which 

 had been raised the two years previous. 



1. Nitrogen in the form of nitrate of soda much more largely in- 

 creased the oat crop than did either phosphoric acid or potash. 



2. In the majority of the experiments in the different parts of 

 the state similar results have been obtained. 



Our conclusions for oats stated with reference to the questions 

 proposed are : — 



1. The requirements of oats are in a marked degre^ different 

 from those of corn upon the same soil. The latter requires potash ; 

 oats are remarkable for their ability to extract potash from the nat- 

 ural stores of the soil ; and profit from an application of nitrogen. 



2. Fertilizers for oats offered in our markets are not properly 

 compounded. The average of those offered in 1897 contained: 

 Nitrogen, 2.65; phosphoric acid, 11.96, and potash 4.90 per cent. 

 The best contained: Nitrogen, 8.92; phosphoric acid, 18.68, and 

 potash, 10 per cent. I would suggest the following proportions: 

 Nitrogen, 4 ; phosphoric acid, 3, and potash, 5 parts. 



3. The extensive use of phosphates alone for oats does not prom- 

 ise to be profitable. 



With Grass and Clover: — The field reported in detail was seeded 



