78 



CHEMICAL MANURES. 



SUCCESSIONS. 



A Culture Exclusively of Wheat. 



First Year Wheat. 

 Complete fertilizer No. 1, 1066 pounds. 



Composition : Quantity. Price. 



Acid phosphate of lime 355 Ibs. $5.40 



Nitrate of potash 177 " 10.47 



Sulphate of ammonia 222" 9.50 



Sulphate of lime 312 " .59 



Total 1066 Ibs. Cost... $25.96 



Second Year Wheat. 

 Sulphate of ammonia 266 Ibs. $11.40 



Third Year Wheat. 



Acid phosphate of lime 355 Ibs. $5.40 



Nitrate of potash 177 " 5.23 



Sulphate of ammonia 222 " . 9.50 



Sulphate of lime : 312 " .59 



Whole 1066 Ibs. Cost... $20.72 



Fourth Year Wheat. 



Sulphate of ammonia 266 Ibs. $11.40 



Expense for four years $69.48 



Expense the year $18.68 



The exclusive culture results in favoring the multiplication of bad 

 weeds to such a degree that, to maintain the harvests at a mean level, 

 we must have recourse every year to several workings, which occa- 

 sions a great deal of expense. To escape this inconvenience, substi- 

 tute Irish potatoes or clover the third year for wheat. If this is 

 done, employ the following fertilizer : 



Acid phosphate of lime 355 Ibs. $5.40 



Nitrate of potash 266 " 15.70 



Sulphate of lime 266 .50 



Whole 887 Ibs. Cost... $21.60 



This change reduces the expenses of the third year to $4.34, and 

 changes the annual expense from $18.68 to $16.48. 



If we give the preference to clover, we must reduce the quantity 

 of nitrate of potash by 88, which brings the expenses of the third 

 year down to $11.48. 



Alternate Culture of Colza and Wheat. 



First Year Colza. 

 Complete fertilizer No. 6, 1155 Ibs. 

 Composition : 



Acid phosphate of lime 355 Ibs. $5.40 



Nitrate of potash 166 " 7.39 



Sulphate of ammonia 355 " 15.20 



Sulphate of lime 337 " .64 



Whole 1153 Ibs. Cost... $28.63 



