Magnesium: nm Magnesium (Mg) is an essential trace element for the vine. To ensure its entire vegetative cycle, it is estimated that the bulk vine needs 5 to 15 kg of magnesium per hectare. Magnesium deficiency appears most frequently following a potassium / magnesium imbalance, particularly during wet years in June and July; in fact, the antagonism between these two elements means that a high concentration of potassium in the soil can block ...
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