Vol. 11, Issue 4 (2022)

Author(s):
Avinash SH, MN Sreenivasa, P Jones Nirmalnath, Yashoda Hegde and RV Hegde

Abstract:
In the present study, 125 fluorescent pseudomonads were isolated from rhizosphere soils of brinjal grown in 10 different locations of Gadag and Haveri districts of Karnataka, India. Out of 125 fluorescent pseudomonad isolates, only seven isolates significantly inhibited the mycelial growth of the S. rolfsii Sacc. Among which, APF110 recorded significantly higher inhibition of 51.08 per cent followed by APF91 and APF121. The efficient isolates were further evaluated for beneficial traits and the results were found to be positive for IAA and siderophore production; P, K and Zn solubilization. The IAR screening indicated that all the isolates showed resistance to chloramphenicol, nalidixic acid and ampicillin whereas, found sensitive to kanamycin. The study of antifungal activity of the pseudomonads in association with plant growth promotion focuses significant assessment on the behavior, which probably brings out a competent biocontrol agent in a sustainable agriculture.