48 CHEMICAL MANURES. 



With 355 pounds of sulphate of ammonia the profit was $5.47. 



With 444 pounds of sulphate of ammonia the profit was $7.13. 



With 578 pounds of sulphate of ammonia the profit was $20.57. 



These results, which I borrowed from one of the most distinguished 

 departments of the Somme, show 



1st. That the beet requires much azotic matter ; 



2d. That up to 117 pounds of azote the acre the benefit is propor- 

 tioned to the amount of sulphate of ammonia employed. 



A succession of six years, comprehending flax, beets, wheat, colza, 

 wheat, oats, barley or rye : 



First Year Flax. 

 Incomplete fertilizer, No. 2, 888 pounds. 



/-> , The acre. 



Composition : Quantity. Price. 



Acid phosphate of lime 355 Ibs. $ 5.40 



Nitrate of potash 177 " 10.47 



Sulphate of lime 355 " __.67 



Expense $16.54 



Second Year Beets. 

 Complete fertilizer, 1066 pounds. 

 Composition : 



Acid phosphate of lime 355 Ibs. $ 5.40 



Nitrate of potash 177 " 10.47 



Nitrate of soda 266 " 8.86 



Sulphate of lime 266 " .50 



Expense $25.23 



Third Year Wheat. 



Sulphate of ammonia 266 Ibs. $11.40 



Expense $11.40 



Fourth Year Colza. 

 Complete fertilizer, 1152 pounds. 

 Composition : 



Acid phosphate of lime 355 Ibs. $ 5.40 



Nitrate of potash 106 " 6.24 



Sulphate of ammonia 355 " 15.27 



Sulphate of lime 338 " _.59 



Expense $27.50 



' Fifth Year Wheat. 

 Ashes of the straw and husk of the colza 



turned in by the plough 266 Ibs. $11.40 



Expense $11.40 



Sixth Year Oats, Rye or Barley. 



Sulphate of ammonia 177 Ibs. _S_7.CO 



Expense $ 7.60 



Total expense $99.67 



Annual expense $16.60 



