16 



HATCH EXPERIMENT STATION. 



[Jan. 



Pans per 

 Thousand. 



Phosphoric acid, 70 



Potassium oxide, 2.90 



Nitrogen, 2.10 



The relative proportion of phosphoric acid, potassium 

 oxide and nitrogen present, according to this analysis, 

 is : — 



Parts per 

 Thousand. 



Phosphoric acid, 1.00 



Potassium oxide, 4.10 



Nitrogen, .3.00 



In other words, for every pound of phosphoric acid re- 

 moved from the soil by a crop of })otatoes tliere are 4.1 

 pounds of potassium oxide and 3 pounds of nitrogen re- 

 moved. A fertilizer supplying the essential elements of 

 plant food in this proportion would, therefore, under the 

 above-stated conditions, be more suitable to use, as far as 

 potassium oxide and phosphoric acid are concerned, as these 

 elements are supplied only by the soil, while nitrogen is 

 supplied in part by atmospheric sources. 



List of Manufacturers and Dealers lolio have secured Certificates 

 for the Sale of Commercial Fertilizers in the State during the 

 Past Tear [May 1, 1902, to May i, 1903), and the Brands 

 licensed by Each. 



The American Agricultural Chemioal 

 Co., Boston, Mass. : — 

 Nitrate of Soda. 

 Muriate of Potash. 

 High-grade Sulfate of Potash. 

 Double Manure Salt. 

 Dry Ground Fish. 

 Fine-ground Bone. 

 Dissolved Bone-black. 

 Plain Superphosphate. 

 Sulfate of Ammonia. 

 Kainit. 

 High-grade Fertilizer with Ten 



Per Cent. Potash. 

 Tobacco Starter and Grower. 



The American Agricultural Chemical 

 Co. (Bradley Fertilizer Co., branch) , 

 Boston, Mass. : — 



Bradley's X. L. Superphosphate. 



Bradley's Potato Manure. 



Bradley's Potato Fertilizer. 



The American Agricultural Chemi- 

 cal Co. — Con. 



Bradley's Complete Manure for 

 Potatoes and Vegetables. 



Bradley's Corn Phosphate. 



Bradley's Eclipse Phosphate. 



Bradley's Niagara Phosphate. 



Bradley's English Lawn Ferti- 

 lizer. 



Bradley's Complete Manure with 

 Ten Per Cent. Potash. 



Bradley's Complete Manure for 

 Corn and Grain. 



Bradley's Complete Manure for 

 Top-dressing Grass and Grain. 



Bradley's Grass and Lawn Top- 

 dressing. 



Breck's Lawn and Garden Dress- 

 ing. 



Brightman's Fish and Potash. 



Church's Fish and Potash. 



Bradley's Seoding-down Manure. 



