Ext. Cir. 220 Tomatoes for Good Health. 8 pp. 



Sta. Bull. 362 Purchasing Fertilizers in New Hampshire. 31 pp. 



Whil« the word fertilizer does not appear in all the above titles, no publica- 

 tion is includerd which does not discuss some aspect of the use of fertilizer. 



CONFORMITY TO GUARANTEE 



The chemical analyses were made by the methods of the Association of Offi- 

 cial Agricultural Chemists. No sample was drawn from less than 10 bags. Forty- 

 two of the 63 brands analyzed equaled or exceeded the manufacturer's guarantee. 

 No brand failed to meet the guarantee in all of the three constituents, total nitro- 

 gen, available phosphoric acid, and water-soluble potash. Four brands were below 

 guarantee in two of the three constituents, one in nitrogen and available phos- 

 phoric acid, two in nitrogen and potash, and one in available phosphoric acid and 

 potash. Seventeen brands failed to meet the guarantee in only one constituent. 



Including all the brands referred to above, seven brands were found to con- 

 tain less than the guaranteed amount of nitrogen. The greatest deficiency was 

 0.50 per cent. The average of the other six deficiencies was 0.16 per cent. Eight 

 brands failed to meet the guarantee in available phosphoric acid. One brand was 

 deficient 2.56 percent. The average of the other seven deficiencies was 0.46 par cent. 

 Ten brands contained less potash than was guaranteed. One was deficient 1.25 

 per cent. The average of the other nine deficiencies was 0.49 per cent. 



Seven brands were guaranteed to contain magnesium oxide. Only one failed 

 to meet the guarantee. 



In the tabulation of the analyses in the following pages deficiencies of one- 

 fourth of one per cent or more are sho\vn in bold-face type. The manufacturers 

 are arranged alphabetically. The brand name is listed alphabetically, or numeri- 

 cally by formula, under the manufacturer. 



