Sta. Bull. 324 — Experiment with Potatoes. 38 pp. 



Ext. Cir. 99 — Asparagus Culture. 4 pp. 



Ext. Cir. 170 — The Home Vegetable Garden. 20 pp. 



Ext. Cir. 212— Cabbage. 4 pp. 



Ext. Cir. 213— Squash. 4 pp. 



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



While the word fertilizer does not appear in all the above titles, 

 no publication is included which does not discuss some aspect of the 

 use of fertilizer. 



Conformity to Guarantee 



The chemical analyses were made by the methods of the Asso- 

 ciation of Official Agricultural Chemists. Twenty-six of the 40 brands 

 analyzed equaled or exceeded the manufacturer's guarantee. No 

 brand failed to meet the guarantee in all of the three constituents, 

 total nitrogen, available phosphoric acid, and water-soluble potash. 

 Three brands were below guarantee in two of the three constituents, 

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

 and potash. Eleven brands failed to meet the guarantee in only one 

 constituent. 



Including all the brands referred to above, six brands were found 

 to contain less than the guaranteed amount of nitrogen. The greatest 

 deficiency was 0.96 per cent. The average of the other five deficien- 

 cies was 0.20 per cent. Nine brands failed to meet the guarantee in 

 available phosphoric acid. One brand was deficient 0.64 per cent. 

 The average of the other eight deficiencies was 0.37 per cent. Two 

 brands contained less potash than was guaranteed. One, a muriate 

 of potash, guaranteed 60.00 per cent, was deficient 1.60 per cent. The 

 other deficiency was 0.36 per cent. 



Four brands were guaranteed to contain magnesium oxide. All 

 exceeded the guarantee. 



In the tabulation of the analyses in the following pages deficiencies 

 of one-fourth of one per cent or more are shown in italic type. The 

 manufacturers are arranged alphabetically. The brand name is listed 

 alphabetically or numerically by formula under the manufacturer. 



