Quantification of Nitrogen Savings by Efficient Azotobacter Isolate in Tomato (Lycopersicon esculentum MILL) Cultivation and Evaluation of Biocontrol Efficacy

A pot experiment was conducted to study the selection of effective isolates for tomato ( Mill) in Azotobacter Lycopersicon esculentum terms of nitrogen accumulation, total N uptake, and antifungal activity of isolates.The experiment was carried out during 2022-Azotobacter 2023 at the Department of Agricultural Microbiology, College of Agriculture, Raipur, C.G. Tomato seedlings were transplanted on 28 October 2022.An interaction study with was conducted to determine the nitrogen-fixing efficiency of isolates, as well as the fruit Fusarium Azotobacter and shoot nitrogen content, fruit and shoot nitrogen uptake, and total nitrogen uptake at harvest.The application of the local Azotobacter isolate AZOT-B-32 resulted in the highest values for nitrogen accumulation in tomato, total nitrogen uptake, and the antifungal activity of Azotobacter isolates.