2021 Vol.27 No.2 PP 231­-238

https://doi.org/10.33451/florafauna.v27i2pp231-238

Screening of Azotobacter strains from rice plant rhizosphere for phosphate solubilizing properties

^*Niharika Dewangan and Shirin Anwar

Swami Shri Swaroopanand Saraswati Mahavidyalaya,
BHILAI (C.G.) INDIA
*Corresponding Author : Email : dewanganniharika081@gmail.com

ABSTRACT

Azotobacter is a plant growth promoting bacteria which solubilize phosphorous and make it available for plants. In the present study the efforts have been taken to fulfill the aim to isolate, characterize and screen Azotobacter for phosphate solubilization from the rice rhizosphere of Durg district. Total 8 strains of Azotobacter were isolated from different rice fields. It was observed that all the strains were found to be phosphate solubilizing but in different quantity. RAZB6 is highest phosphate solubilizer (234.4±1mg/L) and RAZB4 shows minimum (82.09±1mg/L) quantity of phosphate solubilization. Since phosphorous is necessary for the plants proper development and it increases the growth of rice plant and make soil more fertile for other plants growth also so they must be commercialized and used more and more in the crop fields other than the agrochemicals.

Key words : Azotobacter, Rice, Phosphate, Soil fertility.