Author(s):

Swamy KR and Suryanarayana V

Abstract: Canes (Calamus spp.,) are high export valued evergreen non timber forest producing species in India fetching high revenue. Its resources are fast depleting in recent past due to disease induced seedling mortality, heavy premature defoliation, growth and vigour impairment keeping over exploitation.The investigation to assess disease spectra, growth lossand diseases management in Canes was done during 2017 to 2018 in 17 rattan nurseries covering 5 districts under 3 bioclimatic zones of Western Ghats part of Karnataka. Disease spectral study revealed fungal diseases viz., leaf spots, leaf blights, sooty mold and root rot disease. Fungal pathogenic spectra included Pestalotiopsis oxyanthi, Alternaria dianthi, Capnodium salicinum and Fusarium solani. Of four diseases, leaf blight was observed to be more damaging to seedling.Among all 17 forest nurseries, Bellanggi nursery had maximum severity (34.05%) followed by Megaravalli (32.48%) and Kallage (29.91%) nurseries and least severity in Sampaje nursery (11.02%). In field evaluations, among the 6 fungitoxicants Propiconazole or Carbendazim @ 0.2 per cent gave effectively control all foliar diseases of rattan.

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