10 



CONTROL SERIES No. 60 



"New England Standard Nine" Grades. 



The table shows the distribution of tonnage of these grades, also the grades 

 proposed and adopted for New England for 1932, when nitrogen takes the 

 place of ammonia in the statement of grade. 



a Including 247 tons of 8.23 (10)-16-14. 

 b Including 963 tons of 4.12 (5)-10-5. 



Of the ten grades, including the multiple strength mixtures, that have the 

 highest tonnage (31,929 tons), only five, totaling 25,248 tons, were among the 

 "New England Standard Nine." About 59 per cent of the total tonnage of 

 mixed fertilizers was among the grades advocated for New England conditions. 

 In addition, about 22 per cent of the tonnage was from grades varying but one 

 per cent in one or more plant food elements from the grades advocated, so that 

 81 per cent fell within this group or varied from it but one per cent in one or 

 more elements. 



About 17 per cent of the total tonnage of mixed fertilizers was from six grades 

 not among the number advocated for New England conditions. They are 

 2.47 (3)-8-4, fourth largest tonnage sold; 4.12 (5)-3-5, fifth largest; 5.76 

 (7)-3-7, sixth largest; 4 (4.86)-12-4, eighth largest; 4.12 (5)-10-5, ninth 

 largest; 3.29 (4)-8-7, eleventh largest. 



MIXED FERTILIZERS. 

 Guarantees to be Simplified. 



In 1927, on recommendation of the Committee on Definition of Terms and 

 Interpretation of Results on Fertilizers, the Association of Official Agricultural 

 Chemists made official the following interpretation: 



Interpretation of brand name to include the analysis or grade of fertilizer. 

 The Committee recommends and urges the practice of including the 

 analysis or grade of fertilizer with the brand name, both by the manufac- 

 turer on sacks and in printed literature and by the control official in his 

 reports and publications. 

 In 1928, the Association on recommelndation of its Committee adopted as 

 official the following definition of Fertilizer Grade: 



The grade of a fertilizer shall represent the minimum guarantee of its 

 plant food expressed in terms of nitrogen, available phosphoric acid and 

 water soluble potash. 

 In 1930, the Association through the same procedure officially adopted two 

 other interpretations bearing on this subject, as follows: 



Order of Terms. The order of terms in mixed fertilizers shall be nitrogen 

 first, phosphoric acid second, and potash third. 



Statement of Guarantees. The statement of guarantees of mixed fer- 

 tilizers shall be given in whole numbers. 

 In 1927 and 1928, the National Fertilizer Association displayed a fine spirit 

 of cooperation by the adoption of the recommendation that its members 

 throughout the country use the term nitrogen in place of ammonia, and that 



