31 



of the field. All through the season it was evident that the growLl 

 was far more benefited by potash than by any other element. 



RESULTS OF MEASUREMENTS. 



of FERT'ZEEUSED 



Plot 



Nothing, 



Nitrate of soda, 

 Dis. bone-black. 



Nothing, 



Mur. of potash, 

 Nit. & bone-bl'k. 

 Nitrate fepot'sh. 



Nothing, 



B'ne-b'k & pot'sh 

 Nit. b.-b. &pot'h 

 Land plaster, . . 



Notliing, 



Barn-y'd manure 



Lime, 



Nothing, 



Average of Measurements. 



July 4 July 14 July 25 Aug. 4 Aug. 14 Aug. 25 Sept. 4 Sept. 14 



17.3 

 19.7 

 17.5 

 15.0 

 19.3 

 21.5 

 32.8 

 23.1 

 32.5 

 34.5 

 22.5 

 22.2 

 34.1 

 20.6 

 19.3 



23. 



24. 



22. 



18.6 



25. 



26.6 



39.2 



28.6 



39.] 



41.6 



28.5 



28.1 



42.8 



25.8 



24.1 



34.8 



34.3 



30.3 



30.5 



37.5 



37.6 



55.3 



39.6 



53.6 



55.1 



31. 



43. 



51.6 



34. 



32. 



54.6 



54.1 



54.5 



52. 



69.6 



53.3 



86.1 



54. 



86.1 



89. 



53.6 



67.5 



86.3 



62.5 



56.8 



59.8 

 62.8 

 58.8 

 61.5 

 84.0 

 60.8 

 93.3 

 62.1 

 89.6 

 92.5 

 56.8 

 67.8 

 89.6 



72.1 



59.8 

 59.6 

 62.6 



52.8 

 76.5 

 65.8 

 91.0 

 57.5 

 89.5 

 94.1 

 57.3 

 78.0 

 88.8 

 63.5 

 70.8 



These figures make evident in a striking manner the beneficial 

 effects of potash. They do not indicate any progressive falling off" 

 where nitrate of soda was used with the advance of the season. 



ANALYSIS OF 



Moisture at 100* C, 

 Potassium oxide, 

 Phosphoric acid, 

 Nitrogen, 

 Insoluble matter, 



MANURE USED. 



78.83 per cent. 



.327 " 



.184 " 



.345 " 



3.139 " 



The 32 cubic feet used weighed 1121 pounds and furnished at the 

 rate, per acre : nitrogen, 77.4 pounds ; phosphoric acid, 41.3 pounds, 

 and potash, 73.3 pounds. The phosphoric acid and potash are in 

 nearly the same proportion as in "complete fertilizer" and but little 

 less in amount, while there is nearly three times as much nitrogen as 

 in the fertilizer ; and yet the total crop, as well as the apparent 

 increase where manure was used was less than with the " complete 

 fertilizer "; less also thati where nitrate of soda and potash were 

 used ; and but little greater in amount and less in apparent increase 

 than where potash alone or potash and bone-black were used. 



