What is the disadvantage of potash?
                                
                                
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                                    4 min read                                
                            
                                Excessive use of potash, or potassium fertilizer, can lead to nutrient antagonism, where it inhibits the uptake of other vital nutrients like magnesium and calcium. While essential for plant health, overapplication can damage soil structure, increase salinity, and create a dependency on chemical fertilizers.