Potassium: nm Potassium is an essential element for vine growth which is found (as compounds) in most soils. Potassium deficiency is uncommon in vineyards. It is especially encountered when creating new vines on soils that have received little or no manure (extensive meadows or wasteland). Potassium deficiencies can also occur in heavy, very clayey soils, the clays of which adsorb potassium.
The pota ...
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