Purchasing Fertilizers in New Hampshire 11 



Table 5-B. — Fertilizer Analyses Guarantees vs. Inspection Determinations 



Complete Fertilizers — X. H., 1936-1943 

 (Based on data from N. H. Agr. Exper. Sta. Reports > 



* Refers to deficiencies in nitrogen, water soluble potash, and available phosphoric acid. 



Table 5-C. — Fertilizer Guarantees vs. Inspection Determinations 



Complete Fertilizers — N. H. — Averages for Two Years Ending 1942-1943 

 Extreme variations of analyses findings from guarantees 



Per cent averages varied from guarantees: 



Nitrogen Avail, phos. acid Water sol. potash 



Number Number Number 



Company with: brands percent brands percent brands percent 



Deficiencies in Chemical Content of Fertilizers 

 Sold in New Hampshire, 1936-1943 



The New Hampshire annual reports on fertihzers have given the 

 number of cases in each year in \\'hich the chemicals found did not meet 

 the guarantees. These were given for nitrogen, available phosphoric 

 acid, and water soluble potash. The average of these deficiencies was 

 given but that analysis with the greatest deficiency was excluded from the 

 average in each case. In Table 6 these were summarized, but averages 

 are given here for all those which were deficient. During this period the 

 average of the deficiencies ranged from .18 to .25 pounds of nitrogen, 

 .29 to .91 pounds of available phosphoric acid, and .36 to 1.14 pounds of 

 water soluble potash per 100 pounds of fertilizer. These figures differ 

 from those in previous tables in that they include only those samples 

 \\ hich were found deficient for all brands analyzed. 



A rather large percentage of the sample did not fully meet the guar- 

 antees. The number of samples showing deficiencies ranged from ap- 

 proximately 27 per cent, in 1943, to 51 per cent, in 1936. For that eight- 

 year period (1936-1943) approximately 19 per cent were deficient in ni- 

 trogen, 15 per cent were deficient in available phosphoric acid, and 15 

 per cent were deficient in water soluble potash. 



