CORK. 35 



Complete mixture produced 29.1 bushels increase. The largest in- 

 crease of fodder was 1910 lbs. from the complete mixture, and 1330 

 lbs. from the muriate of potash and nitrate of soda. The best financial 

 result came from the plot fertilized with muriate of potash and nitrate 

 of soda, amounting to $4.46 per acre. The next best was from muriate 

 ut potash alone, amounting to $4.34 per acre." ■ vk 



The Permanency of Effect of Potash Fertilizer s^^wW^xXn No. 45^ The 



after effect of potash was studied from the yield of a field to which 



potash was applied in 1888. 



"By a study of these tables it will be seen that potash fertilizers 

 applied in 1888 were of benefit to the crops up to and including 1891, 

 and even to some extent in 1892. - 



"2. That those plots receiving fertilizer in 1889 and subsequently, 

 still show its effect on the crop of 1892. It would seem, therefore, 

 that potash fertilizers supplied to our soil in the quantities given show 

 their effect, not only on the first crop, Jput also on the three subsequent 

 crops, and to some extent on the fourth." 



MAINE, 1886. 



By a. p. Starret, Warren. Report for 1886-87. Soil — Clay loam. 

 The mixed minerals produced an increase of 66.7 bushels of corn. 

 "When bone black was used alone, the crop was very little better 

 than when no fertilizer was.applied, but when this was combined with 

 muriate of potash, the crop increased eight-fold." 



1891. 



By I. O. WiNSLOw, St. Albans. Annual Report for 1891, page 124. 



*'In this experiment nitrate of soda and muriate of potash gave 

 not only the largest yield, but produced the increase in crop at the. 

 least expense for fertilizers." 



MASSACHUSETTS ^Hatch Station), 1889. 



By Bole Bros., Shelburne. Bulletin No. 9, May, 1890. Soil — Good 

 medium loam. 



"These comparisons make it evident that in this soil potash was 

 the ingredient most needed. Alone, and in combination, it produced 

 a profitable increase." 



By W. p. Brooks, Station at Amherst. Bulletin No. 9, May, 1896. 

 Soil — Alluvial. Potash produced a profit of $8.66 per acre. 



"These combinations make it evident that this soil needed potash. 

 Neither alone nor in combination did nitrogen or phosphoric acid 



