404 



Report of the Inspection Work of the 



form of mixture No. 2, may be found desirable in the case of 

 crops whose growth covers a comparatively long period, when a 

 portion of the phosphoric acid is not needed at once. 



Mixture No. 3. 



400 pounds nitrate of soda, 



300 pounds cottonseed-meal, 



500 pounds bone-meal, 



500 pounds acid phosphate, 



300 pounds muriate of potash; 

 or, using only acid phosphate, we have the following: 



475 pounds nitrate of soda, 



275 pounds cottonseed-meal, 



950 pounds acid phosphate, 



300 pounds muriate of potash. 



In this mixture we have about 5 per ct. of nitrogen, 7.5 per ct. 

 of available phosphoric acid and 7.5 per ct. of potash; the nitrogen 

 is high in relation to phosphoric acid and potash, and also the 

 three elements of plant-food are in proportions more nearly equal 

 than in the preceding mixtures. This is also a high-grade mix- 

 ture. 



These three mixtures are given chiefly to illustrate different 

 types of plant-food mixtures that may be found in the market. 



GENERAL REVIEW OF RESULTS OF THE WORK 

 OF THE FERTILIZER DEPARTMENT FOR FIVE 

 YEARS. 

 In tabulated form, we present below some of the results that 



have been accomplished during the last five years by this Station 



in its work of collecting and analyzing commercial fertilizers. 



Number of Manufacturers and Brands of Commercial Fertilizers. 



Number of manufacturers. 



Number of different brands offered 

 for sale 



Number of samples collected by 

 Station 



Number of different brands collect- 

 ed and analyzed . 



71 

 590 

 924 

 450 



