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Effects of potassium, calcium and magnesium ratios in soil on nutrient uptake by pummelo (Citrus maxima Merr.)

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The nutrient uptake processes of K, Mg, and Ca are strongly antagonistic resulting in a deficiency of the depressed nutrient [14]. A deficiency of one element could imply a relative or absolute excess of the others resulting in an imbalance for the plants [3]. A sufficient Ca concentration in soil or nutrient solution is important; however, major cations frequently interfere with Ca uptake [1]. |

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