4 X. II. a<;i;. EXPERIMENT STATION [Bulletin 269 



Total phosphoric acid, available phos- 

 phoric acid and potash 



Total phosphoric acid and potash 



Available phosphoric acid and potash .... 



Potash 21 21 



Total phosphoric acid and available phos- 

 phoric acid 2 1 



Total phosphoric acid 2 2 



Available phosphoric acid 2 2 



40 46 



X ITR( )GEN DEFK TEX( ' I ES 



One hundred three brands were guaranteed to contain 

 nitrogen in amounts varying from 1.00 per cent to 20.56 

 per cent. Thirteen brands failed to meet the guarantee. 

 Five of these brands were deficient less than 2 pounds of 

 nitrogen per ton. Six were deficient more than 2 pounds 

 but less than 4.5 pounds per ton. One was deficient 6.2 

 pounds per ton and one 6.6 pounds per ton. The greatest 

 deficiency is equivalent to only about $1.00 per ton, 

 assuming the nitrogen present in the inorganic form. 



PHOSPHORIC ACID DEFICIENCIES 



One hundred seven brands were guaranteed to contain 

 phosphoric acid. Nine brands failed to meet the guaran- 

 tees. Two were deficient in total phosphoric acid, five in 

 available phosphoric acid and two in both total and avail- 

 able phosphoric acid. None of these deficiencies amount 

 to as much as $1.00 per ton. 



POTASH DEFICIENCIES 



Ninety-five samples were guaranteed 1o contain potash. 

 Twenty-four failed to meet the guarantee. None of the 

 deficiencies amount to as much as $1.00 per ton. 



