Molybdenum is an essential micronutrient required by plants and lawns for several vital physiological processes, including nitrogen metabolism, enzyme activation, and sulfite detoxification. Molybdenum is a critical component of the enzyme nitrate reductase, which is essential for the conversion of nitrate into ammonium in plants.

Nitrogen is a crucial macronutrient required by plants and lawns for growth and development, and molybdenum plays a critical role in nitrogen fixation and assimilation. Without sufficient molybdenum, plants and lawns cannot efficiently convert nitrate into ammonium, which can lead to stunted growth, chlorosis (yellowing) of leaves, and reduced plant vigor.

Molybdenum is also involved in the activation of several enzymes required for the metabolism of carbohydrates and proteins, as well as the detoxification of sulfites. Sulfites are toxic byproducts of plant metabolism that can accumulate and cause damage to plant cells and tissues. Molybdenum-containing enzymes such as sulfite oxidase help to neutralize sulfites and protect plants from oxidative stress.


Molybdenum deficiency in plants and lawns can lead to several symptoms, including stunted growth, yellowing or chlorosis of leaves, and reduced plant vigor. In severe cases, the leaves may become distorted or necrotic, and the plant or lawn may eventually die. Molybdenum deficiency is more likely to occur in alkaline soils or soils with high levels of organic matter, which can bind to molybdenum and reduce its availability to plants.