63 



slug' and potash must varv widolv willi \\w oondition of the 

 soil. Six hundred ])()iiii(ls of a luixhii-c with \\\c different 

 materials in the proportions indicated will ordinarily be 

 sntfieient. All these materials, nitrate, tankage, hone meal, 

 slag meal and potash, mav he mixed after the land is plowed, 

 s]n-ead broadcast aud harrowed in. 



Fertilizers for Clovers in Permanent Mowings. 



To get permanent mowings to produce hay composed 

 largely of clovers, it will he wise to depend chiefly upon the 

 fertilizers which have been nnder consideration. Basic slag- 

 meal or bone meal should be mainly depended npon as sources 

 of phosphoric acid, and lime and either the high-grade sulfate 

 or low-grade sulfate of potash as the source of potash. Ex- 

 cellent crops can be produced by a combination in suitable 

 amounts of these materials alone, and the clover will com- 

 prise a larger proportion of the product if they be used with- 

 out materials which will supply nitrogen. On the college 

 farm at Amherst crojDS of hay rich in clover have been pro- 

 duced year after year by an annual top-dressing composed 

 of a mixture of basic slag meal 500 pounds, aud either high- 

 grade sulfate of potash 150 pounds or low-grade sulfate of 

 potash 300 pounds per acre. The product under this annual 

 system of top-dressing shows fairlj^ good grass, with a bottom 

 full of white clover which grows with remarkable luxuriance 

 and attains unusual size. The fields thus top-dressed contain 

 also many plants of the red clovers. These in the crop of 

 the past year seem to be more abundant where the high-grade 

 sulfate of potash was used than where the low grade had been 

 applied. Basic slag meal is not yet common in our markets. 

 If it be found difficult or impossible to obtain it, bone meal 

 may be substituted for it ; but it is not likely that it will 

 permanently hold the laud in a condition so favorable for 

 clover as the slag meal, for it does not contain lime in so 

 large proportion. The bone meal, however, furnishes a small 

 amount of nitrogen, and this fact may render it somewhat 

 more favorable for grass than is the slag meal. 



It seems ]U'obable that in most cases somewhat more jirofit- 

 able crops of hay will be obtained if in connection with either 



