Dec, 1931] FERTILIZER INSPECTION, 1931 5 



to 20.56 per cent. Twenty brands failed to meet the guar- 

 antee. Fourteen of these brands were deficient one- 

 fourth per cent or less, the equivalent of 5 lbs. or less of 

 nitrogen per ton. The amounts of the other deficiencies 

 expressed as pounds per ton are as follows : 5.8 lbs., 5.8 

 lbs., 6.0 lbs., 6.0 lbs., 7.4 lbs., 24.2 lbs. The greatest de- 

 ficiency, 24.2 lbs., is equivalent to approximately $2.50 

 per ton, assuming the nitrogen present in the inorganic 

 form. 



PHOSPHORIC ACID DEFICIENCIES 



One hundred five brands were guaranteed to contain 

 phosphoric acid. Eight brands failed to meet the guaran- 

 tees. One was deficient in total phosphoric acid, six in 

 available phosphoric acid and one in both total and, 

 available phosphoric acid. Only one of these deficiencies 

 would amount to as much as $1.00 per ton, 



POTASH DEFICIENCIES 



One hundred nine samples were guaranteed to contain 

 potash. Twenty-five failed to meet the guarantee. Only 

 two of these deficiencies, however, would amount to as 

 much as $1.00 per ton. 



In the tabulation of the analyses in the following pages 

 deficiences of two-tenths of one per cent or more are 

 shown in italics. The names of the manufacturers are 

 arranged alphabetically, and under the manufacturer the 

 different brands are arranged alphabetically or numer- 

 ically by formula. 



