Your idear paterner of Organic fertilizer for crop
Look at above those pictures , An good and higher content leonardite mineral must easily be crushed with man-hand . That's the reason why we called weathering (decomposed coal) .
There have five points that an good leonardite must have :
Which kind of leonardite mineral we must choose when need 100% water solubility potassium humate flake ? Let's see the picture on the right .
Now there have many kinds of leonadite in China market , 50% and 70% are the most popular items we factory used , but only 70% high humate content can be shiny when set at sunlight , with 98-100% water solubility . But for 50% , we most used for Humic acid 50% ball and powder , which is not water soluble in water , but for alkline sandy soil .