CHEMICAL MANURES. 45 



Third Year. 

 Complete fertilizer No. 1, 1066 pounds. 



Composition: Q^my 1 "" ""Vice. 



Acid phosphate of lime 355 Ibs. $5.40 



Nitrate of potash 177 " 10.47 



Sulphate of ammonia 222 " 9.50 



Sulphate of lime 311 " .59 



Cost $25.96 



Total , $63.32 



Fourth Year Wheat. 



Brought down $63.32 



Sulphate of ammonia 266 Ibs. $11.40 1.1.40 



Expense for 4 years 74.72 



Mean expense per year $18.68 



Thus, from an expense each year of $18.68 a mean return of from 

 43 to 60 bushels of wheat is obtained. 



I would advise you to use the following for an alternate culture of 

 wheat and colza : 



First Year Colza. 



Complete fertilizer No. 6, 1155 pounds. 

 Composition : 



Phosphate of lime 355 Ibs. $5.40 



Nitrate of potash 106 " 6.28 



Sulphate of ammonia 355 " 15.20 



Sulphate of lime 333 " .64 



Expense $27. 52 



Second Year Wheat. 



Sulphate of ammonia 266 Ibs. $11.40 



Ashes of straw and husk of colza 



Total expense $38.92 



Total expense per year $19.46 



In this case we open the fallow with the colza, which is a weedy 

 plant, and by cultivating it clear the soil' of bad weeds. After the 

 harvest, burn the husk and straw of the colza on the ground, and 

 turn it in with the plough, so as to reduce as much as possible the 

 quantity of potash and phosphate of lime lost by the soil. Spread 

 the sulphate of ammonia broadcast in the spring. 



I pass to a succession of four years, much appreciated in practice, 

 and which recommends itself by the facility with which it permits 

 the triennial succession to be replaced by the alternate and continued 

 successions. It comprehends the following succession of harvests : 

 First year, Irish potatoes. 

 Second year, wheat- 

 Third year, clover. 

 Fourth year, wheat. 

 These are the fertilizers to be used : 



