Dept. of Forest biology and Tree Improvement, College of Forestry, UAS-Dharwad, Sirsi, 581 401, Karnataka
Directorate of Extension, UAS-Dharwad, Sirsi, 581 401, Karnataka
Online published on 13 August, 2012.
Pongamia pinnata a multipurpose tree gained importance for its bio fuel value in recent years. Both seedlings and grown up plants suffer from tar spot caused by Rhitisma pongamiae. Sixty four fungial toxicants were evaluated for their efficacy in inhibiting mycelial growth. Propiconazole (both 500 and 1000ppm) amongst six fungicides, and Trichoderma viride amongst bio-agents showed (90.13%) inhibition over control. Whereas, in the evaluated natural products, maximum inhibition was by 10 per cent neem kernel extract (71.25%). In all the evaluations, higher inhibition with increased concentration was evident. The generated data is first of its kind and helps to plan field performance of best proven ones.
Pongamia pinnata, tar spot, fungi-toxicants, in vitro evaluation, mycelial growth inhibition
