Fixation Nitrogen 6 Enzymes 2 Plants 2 Biochemistry 1 Biofertilizers 1 Biological microtechnique 1 Biology 1 Dissertations, Academic (Ph.D) 1 Dyeing 1 Effect of nitrogen on 1 Enzymology 1 Microorganisms 1 Nitrification 1 Nitrogen content 1 Nitrogen-fixing plants 1 Photosynthesis 1 Plant-soil relationships 1 Soils 1 Synthesis 1 Thesis (Ph.D)-Biochemistry 1