Molybdenum is among the mineral elements essential for the growth and development of plants. Macronutrient availability often impacts the growth and yield in crop plants, but the efficiency in obtaining micronutrients such as Mo might have also important effects on plant productivity .
Molybdenum is an essential component in two enzymes that convert nitrate into nitrite and then into ammonia before it is used to synthesize amino acids within the plant. It also needed by symbiotic nitrogen fixing bacteria in legumes to fix atmospheric nitrogen.
Background The importance of molybdenum for plant growth is disproportionate with respect to the absolute amounts required by most plants. Apart from Cu, Mo is the least abundant essential micronutrient found in most plant tissues and is often set as the base from which all other nutrients are compared and measured.
Animals and plants require trace amounts of molybdenum. Its importance is vastly disproportionate with regard to the amount required for normal growth. In past years, most farmers and soil scientists were just getting to grips with sulphur and phosphate requirements of crop plants, let alone nitrogen and potash.
Molybdenum in plants and soils Molybdenum is essential to plant growth as a component of the enzymes nitrate reductase and nitrogenase. Legumes need more molybdenum than other crops, such as grass or corn, because the symbiotic bacteria living in the root nodules of legumes require molybdenum for the fixation of atmospheric nitrogen.