SOME STATION INVESTIGATIONS IN FERTILIZERS 285 



The Khode Island Station gives the following list of formulas for the 

 home mixing of fertilizers,, the following being for the Irish potato crop: 



Pounds. Per cent. 



Acid phosphate .. . 85(M Nitrogen 3.5 



Nitrate of soda.. . 150 ( ieldi ( potaBQ 80 



Muriate of potash . . \ Available phosphoric acid . . 6.0 



Cotton seed meal . . 700 J 



Where a higher quality of potatoes was desired, the following was 



advised : 



Pounds. Per cent. 



High grade sulphate of potash 325 ^ 



Nitrate of soda 100 / /- Nitrogen 4.0 



Sulphate of ammonia 100 > yielding -j Potash 8.0 



Dissolved bone black 750 I I Available phosphoric acid 7.0 



Cotton seed meal. . 725 J 



The following formula was designed where a good quality of tubers was 

 desired, and was at the prices then ruling, very cheap : 



Pounds. Per cent. 



Cotton seed meal 800 ^) 



'""!'::::: 2 " { 5=f .:.::::::::::::::::::: 



Acid phosphate 700 J l Available phosphoric acid .... 5.2 



The following formula contains a large amount of .nitrogen in the form 

 of nitrates. The bone comes slowly into use and that makes it best for a 

 long season or successive crops: 



Pounds. Per cent. 



M uriate of potash 400 ^ 



Acid phosphate 500 / , Nitrogen 2.5 



Nitrate of soda 250 > yielding j Potash 10.2 



Hone meal 400 I I Available phosphoric acid .... 7.2 



Cotton seed meal . . . 450 J 



Another Rhode Island potato formula: 



Pound? Per cent. 



Acid phosphate 89< "} 



Tankage 550 f (Nitrogen 2.5 



Muriate of potash . . 450 f yieWlDg Potasb " - 1 



Nitrate of soda . 110 3 Available phosphoric acid ... 7.2 



