INSPECTION OF COMMERCIAL FERTILIZERS 

 Summary of Deficiencies in Mixed Fertilizers 



Of the 287 brands analyzed, 191, or 66.55 per cent, showed no deficiencies. 

 Out of 851 plant food guarantees made, 88.13 per cent were fully maintained. 

 The deficiency table shows the following statistics: 



Deficiencies not exceeding y^ of one per cent, 53. 



Deficiencies between J^ and Yi of one per cent, 24. 



Deficiencies between }/2 and ^ of one per cent, 12. 



Deficiencies more than 3^ of one per cent, 12. 



Of the total number of guarantees of each element made, 6 per cent of the 

 nitrogen, 14.4 per cent of the available phosphoric acid, and 15.5 per cent of the 

 potash were not met. Six of the 16 nitrogen deficiencies, 19 of the 41 available 

 phosphoric acid deficiencies, and 28 of the 44 potash deficiencies, did not exceed 

 }/i of one per cent. 



There were 2 less shortages in nitrogen, 14 more in available phosphoric acid, 

 and 12 more in potash, than in 1932. 



Mixing Efficiency Table. 



Average Percentage of Plant Food Abo\ 

 Below the Minimum Guarantee. 



