Browsing by Author "Lakshmi, K.M."
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Item Trichoderma Hamatum - A Potential Biocontrol Agent For Basal Stem Rot (Ganoderma Wilt) Disease Of Coconut(2002) Srinivasulu, B.; Aruna, K.; Lakshmi, K.M.; Sabitha Doraisamy; Rao, D.V.R.; Hameed Khan, H.Basal stem rot (Ganodenna wilt) disease caused by Ganoderma spp is one of the major constraints in coconut cultivation, especially in light soils of Andhra Pradesh. Native bio control agents, Trichodenna spp were isolated and were identified as T.viride, T.harzianum and T.hamabim. The compatibility of commonly used agrochemicals with native bioagents and test pathogen was determined. Talc formulations for the three spp of Tnchoderma were developed. Neem cake, wheat grains and farmyard manure were found to be superior over other substrates for mass multiplication as indicated by maximum growth and sporulation of these bio agents. ZnSO, (296) was found inhibitory to Ganoderma spp but not to T.viride, T.hamatum and T.harzianum (1% ZnSO,). Field studies indicate that the talc formulations (50 glpalm) of T.hamatrrm alone and in combination with 5 kg neem cake potentially arrested the spread of the disease (0 to 3%) followed by T.harzianum and T.viride when fortified in neem cake 8 5 kg per palm.