Dec, 1929] fertilizer inspection, 1929 



cent 



cent 

 cent 

 cent 

 cent 



0.11 per cent 



0.14 per cent 

 0.20 per cent 

 0.22 per cent 



0.11 per cent; 0.12 per cent; 0.13 per 



0.16 per cent; 0.18 per cent; 0.20 per 

 0.20 per cent ; 0.20 per cent ; 0.22 per 

 0.28 per cent ; 0.31 per cent ; 0.50 per 

 0.62 per cent ; 0.68 per cent. One-half of the deficien- 

 cies was less than 0.20 per cent. These deficiencies decrease 

 the commercial valuation of the fertilizers less than $1.00 

 per ton. The greatest deficiency, 0.68 per cent, is equivalent 

 to appi'oximately $3.50 per ton. 



PHOSPHORIC ACID DEFICIENCIES 



One hundred thirteen brands were guaranteed to contain 

 phosphoric acid. Sixteen brands failed to meet their guar- 

 antees. Three were deficient in total phosphoric acid, six 

 in available phosphoric acid and seven in both total and 

 available phosphoric acid. The deficiencies in total phos- 

 phoric acid were 0.16 per cent ; 0.18 per cent ; 0.25 per 

 cent ; 0.28 per cent ; 0.33 per cent ; 0.35 per cent ; 0.49 per 

 cent; 0.68 per cent; 0.81 per cent; 1.36 per cent. The 

 deficiencies in available phosphoric acid were 0.16 per 

 cent; 0.20 per cent; 0.23 per cent; 0.25 per cent; 0.28 per 

 cent ; 0.32 per cent ; 0.42 per cent ; 0.50 per cent ; 0.59 per 

 cent; 0.74 per cent; 1.52 per cent; 1.61 per cent; 3.13 per 

 cent. A deficiency of 3.13 per cent available phosphoric 

 acid is equivalent to approximately $5.00 per ton. 



POTASH DEFICIENCIES 



One hundred samples were guaranteed to contain potash. 

 Seven failed to meet the guarantee. The amounts of the 

 deficiencies were 0.14 per cent ; 0:19 per cent ; 0.19 per cent ; 

 0.31 per cent; 0.39 per cent; 0.66 per cent; 1.56 per cent. 

 The greatest deficiency is equivalent to about $1.50 per ton. 



In the tabulation of the analyses in the following pages 

 deficiencies 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 numerically by 

 formula. 



