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K.K.N. Nambiar
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AN IMPROVED METHOD FOR ISOLATION OF THIELAVIOPSIS PARADOXA FROM STEM BLEEDING AFFECTED COCONUT PALMS Anil Kumar; K.K.N. Nambiar
International Coconut Community Journal Vol 7 No 01 (1991): CORD
Publisher : International Coconut Community

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37833/cord.v7i01.243

Abstract

Stem bleeding of coconut caused by Thielaviopsis paradoxa (de Seynes) Von Hohnel is an important disease affecting coconut in many countries (Menon and Pandalai, 1958; Ohler, 1966, Nambiar and Sastry, 1988). lsolation of the pathogen from diseased tissues on different agar based media has given inconsistent results (Anon., 1976; Anon., 1986), None of the selective media reported for certain related fungi viz., T. basicola (Berk and Br.) Ferr. (David, 1978;Tsao and Bricker, 1966) and Ceratocystis wagnerii Goheen and Cobb (Hicks et al., 1980) proved useful for the isolation of T. paradoxa Since, standardization of an isolation method is a basic necessity for any study on plant pathogens, an attempt was made to improve upon existing methods.
UPTAKE, TRANSLOCATION AND PERSISTANCE OF CARBENDAZIM IN COCONUT IN RELATION TO CONTROL OF STEM BLEEDING DISEASE ANIL KUMAR; K.K.N. Nambiar; S.R. VOLETI
International Coconut Community Journal Vol 8 No 02 (1992): CORD
Publisher : International Coconut Community

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37833/cord.v8i02.262

Abstract

Uptake, translocation and persistance of carbendazim in coconut in relation to control of stem bleeding caused by Thielaviopsis paradoxa was studied. The fungicide when applied through a single root @ 10g Bavistin/palm, was detected up to 2m height in the trunk of treged palms on feeding side, whereas no fungicide was detected from remaining three sides. In the former case, the furigicide accumulated in sufficient concentrations to arrest the internal decay for six months. The residues detected in nut water from nuts of different maturity from treated adult palms (20 ‑ 25 yrs.) were within safe limits.
Co-Authors Anil Kumar S.R. VOLETI