Bacteria found in root nodules of legumes are
Nitrobacter
Nitrosomonas
Rhizobium
Azotobacter
Assertion : Nitrogen-fixing enzyme in legume root nodules function at low oxygen concentration.
Reason : Low oxygen concentration is provided by leghaemoglobin.
The organisms which are used to enrich the nutrient quality of the soil are called
Nitrogen fixation is
The chemical fertilizer required for better rhizobial nitrogen fixation is
Which one of the following is not used in organic farming?