MANUBDS FOlt SILAOU COBlST l55 



of twelve tons than for a crop of eight tons; 

 proper manurmg will frequently make this differ- 

 ence in yield, other things being equal. It is rec- 

 ommended that manure be applied either in the 

 fall or winter on sod, at the rate of eight to ten 

 tons per acre, or in spring after the land is plow^ed 

 and previous to planting. There is no crop that 

 will utilize to such good advantage the coarse ma- 

 nures as corn; it is a great forager, and at the 

 season of its greatest demands, when it makes its 

 most rapid growth, the coarser organic manures 

 are more readily changed and converted into active 

 substances than would be the case with such crops 

 as wheat or grass, that mature early and require 

 a large proportion of their food before changes 

 in the organic compounds can take place in the 

 soil. 



It is essential, also, in order that the nitrogenous 

 material of the manure may be completely utilized, 

 that abundance of minerals shall be at the disposal 

 of the plant. Therefore, a liberal fertilization with 

 available forms of phosphoric acid and potash, is 

 also recommended. Usually, an application of 

 300 pounds of acid phosphate, or its equivalent 

 of phosphoric acid from ground bone, when there 

 is an abundance of organic matter, and 100 pounds 

 of muriate of potash, broadcasted, will very 

 materially increase the yield. 



An old practice, which has many points in its 



