Abstract
The investigation was undertaken to test the efficacy of pytoalexin against Fusarium udum , Amongst the eleven concentrations of cajanol tested against F. udum concentrations causing wilt of pigeonpea i.e. 325, 350 and 375 μg/l were found most effective resulting in cent per cent growth inhibition of F. udum . The concentrations of cajanol viz., 350 μg/l and 375 μg/l were found to be most effective against conidial germination of F. udum . Besides the above, a commercial cajanol formulation was also tested against F. udum and the concentrations of 325 μg/l, 350 μg/l and 375 μg/l were againfound to be most effective in inhibiting the conidial growth germination.
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