Molybdenum

A micronutrient, which is represented by the chemical symbol Mb. Molybdenum is involved with the process of reducing Nitrate to Nitrite within a plant, and also involved with nitrogen fixing soil bacteria, as part of the nitrogenase enzyme. Deficiency results in interveinal chlorosis. Legumes, e.g. clovers, have a high molybdenum requirement to aid fixing nitrogen, so supplementary applications might theoretically be needed where micro-clover swards are being managed, but for most turfgrass situation there is unlikely to be a need for any supplementary addition.