q^ O. M. Scott & Sons Co., Marysville, Ohio sfj 



JCID PHOSPHATE 



^ciD phosphate results from the treatment of phos- 

 -^^phatic rock. It is valuable for its phosphorous content, 

 amounting to from fourteen to sixteen per cent. It has a 

 stimulating effect on grass and is used especially when im- 

 mediate results are desired. 



POTASH 



Ti^uRiATE and sulphate of potash are not recommended 

 1 yjL except for very sandy soils. Clay is likely to contain 

 enough potash. These fertilizers are very stimulating to the 

 clovers. 



SULPHATE OF AMMONIA 



TiyTVCH interest is now being shown in the useof sulphate 

 J VJ. of ammonia. This is a by-product of the manufacture 

 of gas and coke, containing twenty per cent, of nitrogen. 

 Its use is thought to increase the acidity of the soil, and the 

 presumable effect of this acidity in eradicating weeds and 

 undesirable grasses is attracting attention. 



Certain varieties of Bents and Fescues, which are the 

 most desirable plants for the green, are indifferent to acid 

 and thrive under the presence of sulphate of ammonia. 

 Weeds and undesirable grasses, it is supposed, either suc- 

 cumb to the acid condition it produces or are crowded out 

 by the healthily-growing Bent or Fescue. 



A long series of tests carried on at the Rhode Island Ex- 

 periment Station and in other places show some remarkable 

 results and suggest interesting possibilities in the use of this 

 fertilizer. It is claimed that its use on the green for a few 

 years will cause the practical disappearance of the weeds. 



However, the favorable report of efforts to develop acid- 

 ity at the Rhode Island Station, may be attributed par- 



C36} 



