COKN. 37 



considerable increase; with either nitrogen or phosphoric acid the 

 increase due to potash is doubled; with both of them and potash, the 

 increase due to the latter is doubled yet, a gain amounting to .no less 

 than 17 bushels of corn per acre." ..^, 



By Pliny Moore, Worcester. Bulletin No. 14, May, 1891. ^- 

 Soil — Good medium loam. 



*'The striking benefit of potash as compared with nitrogen ,and 

 phosphoric acid is clearly brought out by these comparisons. 



"For corn on this soil I should, .recommend the use of fertilizer 

 rich in potash and phosphoric acid, and with a small percentage of 

 nitrogen.'* , , ^ 



By L. W. West,.Hadley. Bulletin No. 14, May 1891. Soil — A clayey 

 loam, with clayey subsoil. A gain of $40.46 per acre has been pro- 

 duced by fertilizers rich in potash. 



**A1] through the season it was evident that the growth was far 

 more benefited by potash than by any other ejiement. 



"These figures make evident in a striking manner the beneficial 

 effect of potash. 



"Alone, and in every coi;i[^binatiQn, potash produces a remarkable 

 increase; but nitrate of soda, too, seems to have been required, for the 

 combination of this with potash produces a much larger crop than 

 potash alone. , 



"For this soil I am confident that the, most profitable results would 

 be obtained by using light dressing of manure with a little quick-acting 

 nitrogenous fertilizer and a considerable amount of potash." 

 By D. B. Dewey, New Lenon. Bulletin No. 14, May, 1891, 

 Soil — A fine compact loam, inclined clayey and cold. A profit of 

 $8.25 wgs obtained by potash. 



"In July the plots which had received potash appeared to be 

 doing distinctly better than the others. 



"These comparisons make it evident that this soil most needed 

 potash, which alone and in nearly every combination seemed to have 

 produced a profitable increase. 



"For this soil it is evident that for corn, a fertilizer should be rich 

 in potash." 



By W. p. Brooks, Station Grounds, South Acre, Amherst. Bulletin 

 No. 14, May, 1 89 1. Soil^— A fine yellow loam. 



"These comparisons make it evident that this soil. still needs 

 potash in greater amount than either of the other elements of plant- 



