Browsing by Author "Aruna, K."
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Item Integrated disease management of basal stem rot in coconut(2007-06) Srinivasulu, B.; Vijaya Krishna Kumar, K.; Aruna, K.; Rao, D.V.R.Item Prevalence of Basal Stem Rot Disease of Coconut in Coastal Agro-Ecosystem of Andhra Pradesh(2002-11) Srinivasulu, B.; Aruna, K.; Krishna Prasadji; Rajamannar, M.; Sabitha Doraisamy; Rao, D.V.R.; Khan, H.H.Item Transmission electron microscopy confirms pytoplasmal etiology of Tatipaka disease of coconut(2006) Srinivasulu, B.; Nagamalleswari Devi, Y.; Vijay Krishna Kumar, K.; Aruna, K.; Krishna Prasadji, J.; Rao, D.V.R.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.