Selection of effective Azotobacter isolates for tomato (Lycopersicon esculentum Mill)

Abstract

A pot experiment to study the selection of effective Azotobacter isolates for tomato (Lycopersicon esculentum Mill) on yield and biomass accumulation study of tomato, nitrogen fixing efficiency of Azotobacter isolates and biochemical parameter of soil was conducted during 2022-2023 at the Department of Agricultural Microbiology, College of Agriculture, Raipur, C.G. Seedlings were transplanted on 28 October 2022. Plant height, number of fruits per plant, total weight of fruits per plant, fruit yield and dehydrogenase activity were determined. Dry matter of fruits per plant and dry matter of shoots per plant at harvest were recorded. It was found that application of local Azotobacter isolate AZOT-B-32 was best for obtaining higher values with respect to yield, biomass accumulation study, and nitrogen fixing efficiency and biochemical parameters of soil.