Michigan State University Extension
Soils & Soil Management - Fertilizer - 06209705
07/10/97

Residues from Dry Fertilizers

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                                           

Unlike many dry fertilizers, liquid fertilizers seldom      
show any residues in the soil when band-placed. These       
residues are not an example of poor recovery for dry        
fertilizers, but rather are usually conditioners, inert     
materials, by-products such as gypsum, or impurities.       
Some of these residues may be calcium, magnesium or         
sulfur, which are essential plant nutrients for which no    
claim has been made. If such materials were added to        
liquid fertilizers, they could cause sedimentation.         

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