Michigan State University Extension
Soils & Soil Management - Fertilizer - 06209707
07/10/97

By the Gallon or by Weight?

Fluid Fertilizers--Liquids and Suspensions                  
MSU Ag Facts                                                
Extension Bulletin E-933, December 1984, Revised,           
destroy previous editions                                   

by R. E. Lucas and M. L. Vitosh, Department of Crop         
and Soil Sciences                                           

Most fluid fertilizer concentrates weigh 10 to 12 pounds    
per gallon. Therefore, about 9 gallons of liquid are        
required to provide the same quantities of nutrients as     
100 pounds of dry fertilizer of the same formulation. If    
the dry fertilizer costs $12 per hundred ($240 per ton),    
the liquid fertilizer of the same formulation shouldn't     
cost more than $ 1.33 per gallon. Fertilizers of the same   
grade, formulation, placement and rates give nearly         
identical response, whether liquid or dry.                  

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