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Molybdenum

Silver-white, very hard heavy metal or element (Mo), which occurs in nature mainly as molybdenite (molybdenum lustre, water lead) and wulfenite (yellow lead ore) and is categorised as a trace element. In small quantities, it is an important nutrient for the vine as a component of enzymes. It appears to be particularly important during flowering. It is also an important trace element for legumes, as the bacteria that live in symbiosis with them (nodule bacteria) are able to bind atmospheric nitrogen with a molybdenum-containing enzyme (nitrogenase). A molybdenum deficiency is most likely to occur on acidic sandy soils and leads to reduced yields. See also under vineyard care.

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