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  1. Home
  2. Browse by Author

Browsing by Author "Jayasankar, N.P."

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    Association of Enterobacter with Coconut Root (Wilt) Disease
    (1976-09) Mathew George; Potty, V.P.; Jayasankar, N.P.
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    A bacterial blight disease of cardamom
    (2007-02-08) Mathew George; Thomas Joseph; Potty, V.P.; Jayasankar, N.P.
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    Coconut root (wilt) disease
    (2007-02-08) Jayasankar, N.P.
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    The coconut root (wilt) disease - A state of the art report
    (2007-02-08) Nayar, N.M.; Jayasankar, N.P.
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    Coconut root (wilt) disease - Survey and eradication
    (2007-02-08) Jayasankar, N.P.
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    Coconut root (wilt) disease past studies, present status and future strategy
    (2007-02-08) Jayasankar, N.P.; Bavappa, K.V.A.
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    Coconut root (wilt) disease past studies, present status and future strategy
    (1986-05) Jayasankar, N.P.; Bavappa, K.V.A.
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    Collateral hosts of Corynebac terium sp. causing chenthal disease of cardamom
    (2007-02-08) Mathew George; Jayasankar, N.P.
    Corynebacterium sp. is reported to be involved in the blight of cardamom and symptoms characteristic of chenthal disease were observed on certain wild species of zinziberaceae. The host range of the bacterium was studied with respect to eight species after spraying the bacterial suspension. Curcuma angusttfoHa did not exhibit any symptoms. Mitd infection was noted on Alpinia galange. Water soaked lesions were observed on Aframomum maJequeta and Zingiber officinale.
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    A colorimetric method for the estimation of Pyrogallol
    (2007-02-08) Joseph, K.V.; Potty, V.P.; Jayasankar, N.P.
    Pyrogallol in the 5-20 jug range has been estimated colorimetrically in acetic acid after treatment with paradimethyl amino benzaldehyde and sulphuiic acid. Some factors affecting the formation of colour have been studied.
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    Combating important diseases of coconut
    (2007-02-08) Jayasankar, N.P.
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    Control of Chenthal (bacterial blight) disease of cardamom with penicillin
    (2007-02-08) Mathew George; Jayasankar, N.P.
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    Current trends on coconut root (wilt) disease
    (2007-02-08) Jayasankar, N.P.
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    Discourse on coconut root (wilt)
    (2007-02-08) Jayasankar, N.P.; Solomon, J.J.; Rawther, T.S.S.; Thomas Joseph; Muraleedharan, A.
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    Distribution and factors influencing chenthal disease of cardamom
    (2007-02-08) Mathew George; Jayasankar, N.P.
    'Chenthal' is a newly reported disease of cardamom caused by Corynebacterium sp. The symptoms of the disease are delineated. Water-soaked lesions appeared on the abaxial surface of the young leaves turn brown to dark in colour and the leaves wither. As withering of the leaves progresses the plants wilt. Affected gardens present a burnt appearance. Report on a comprehensive survey of Chenthal disease reveals that the entire cardamom belt of Kerala is affected and the disease has extended to patches of Tamil Nadu and Karnataka States too. It is noteworthy that pockets of healthy plantation exist within the foci of severe infestation. Occurrence of healthy plantation cut away from the main belt of cardamom growing areas is also observed. Analysis of the survey data reveals a highly significant correlation between manuring and incidence of the disease. Significant correlation is found between shade and intensity of the disease also. Based on these points, the probable chances of arresting the disease by ecological manipulation and suitable management practices is discused. An explanation to the severity of Chenthal disease in red gum tree shade is also attempted.
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    Effect of crop mixing on the coconut Rhizosphere
    (2007-02-08) Potty, V.P.; Mathew George; Jayasankar, N.P.
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    Elimination of Tannins from coconut leaves
    (2007-02-08) Potti, V.P.; Joseph, K.V.; Jayasankar, N.P.; Hariharasubramanian, V.
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    Epilogue
    (1991-01) Jayasankar, N.P.
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    Etiology - Bacteria
    (2007-02) Jayasankar, N.P.; George, M.
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    Etiology and control of Chenthal disease of cardamom
    (2007-02) Mathew George; Jayasankar, N.P.
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    Evaluating root degeneration in coconut in relation to root (wilt) disease
    (1982-08) Thomas Joseph; Jayasankar, N.P.
    Neither root degeneration nor root regeneration in healthy and root (wili)-affected coconut palms was statistically significant, Eight,. 11, and 6% of roots in West Coast Tall palms and 3, 3. and 4% of roots in locally grown Philippine palms were decayed in healthy trees, trees in the middle stage of the disease, and trees in the advanced stage of the disease, respectively. Observations confined to any sector of the root system were not representative of root characteristics
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