Nitrogen fixation increased by

A. Phosphorus

B. Calcium

C. Magnesium

D. Potassium

Answer: Option A

Solution(By Examveda Team)

Nitrogen fixation is the phenomenon of converting atmospheric nitrogen into nitrogen compounds which can be absorbed by the legume plants in the presence of microorganisms through a series of biochemical reactions.
The process of nitrogen fixation is increased by the application of phosphorus fertilizer to the soil. It enhances the symbiotic nitrogen fixation process in legume crops.