how soil pH affects the biological nitrogen fixation? how soil salinity affects the biological nitrogen fixation? how mineral defeciency affects the biological nitrogen fixation?
The biological nitrogen fixation occurs due to soil organisms-fixators: bacteria, actinomycetes, and cyanobacteria.They are influenced by mineral nutrient imbalances. Low levels of calcium, phosphate, molybdenum under acidic conditions will limit nitrogen fixation. Under alkaline conditions, phosphate, cobalt, boron, iron, and copper levels become a concern The soil salinity affects the biological nitrogen fixation as well as the mineral defeciency affects through the nitrogen fixation enzyme system of organism-fixators. It influences on their survival, taking into consideration that some of them are symbiotic organisms with the plants. The occurrence of the symbiotic relationship is heavily dependent upon a variety of soil conditions.Mineral plant starvation follows to the death of nitrogen fixator microorganisms.