Enzyme activities and microbial population status of soil as influenced by humic acid under doses of nitrogen in Spinach rhizosphere

Abstract

The response of rhizospheric microbial population and enzymes activities to humic acid and N-fertilizer were acquaintly correlated with each other. Sustained level of crop nutrition requires, achieving the potential yield and maximum nutrient use efficiency. Hence through integrated use of fertilizers and humic acid, the microbial population and soil enzymes in rhizosphere soil could be build up for the efficient utilization of nutrients.