Browsing by Author "Brahma, R.N."
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Item Basal wilt of black pepper and its control(2007-02-08) Brahma, R.N.; Nambiar, K.K.N.; Sarma, Y.R.Item Basal Wilt of Black Pepper and its Control(1980-12) Brahma, R.N.; Nambiar, K.K.N.; Sarma, Y.R.Item Estimates on the extent of loss due to quick wilt disease of black pepper (Piper nigrum L.) in Calicut district of Kerala(2007-02) Balakrishnan, R.; Anandaraj, M.; Nambiar, K.K.N.; Sarma, Y.R.; Brahma, R.N.; George, M.V.A survey was conducted in Calicut district of Kerala State (India) to assess the extent of loss in yield due to quick wilt disease of black pepper. The study was conducted for a period of three years (1982-1984) and it was estimated that on an average about 1,88,900 vines perish due to quick wilt disease per year and the consequent yield loss amounting to about 119 metric tonnes of black pepper per year. It was also estimated that a total of 11 % of plants were lost due to the disease during the course of three years (1982-1984)Item Field Reaction of Turmeric Types to Leaf Blotch Disease(2007) Nambiar, K.K.N.; Sarma, Y.R.; Brahma, R.N.Item Field reaction of turmeric types to leaf blotch disease(2007-02) Nambiar, K.K.N.; Sarma, Y.R.; Brahma, R.N.Item Green manure crops for arecanut gardens(2007-02) Mohapatra, A.R.; Sannamarappa, M.; Brahma, R.N.; Bhat, N.T.Item Important Diseases of Cashew and their Control(2007-02) Nambiar, K.K.N.; Brahma, R.N.Item Leaf Rot of Cashew Caused by Cylindrocladium quinquiseptatum, Boedijin and Reitsma(2007-02) Sarma, Y.R.; Nambiar, K.K.N.; Brahma, R.N.Leaf rot of cashew caused by C. quinquiseptatum was noticed both in plains as well as in hilly tracts of Cannanore and Calicut districts of Kerala during August-October period. Among the 19 hosts belonging to 8 families, 13 hosts belonging to 7 families were found to be infective. The isolates of C. quinquiseptatum from cashew, clove and eucalyptus are cross inoculable. This fungus is recorded on cashew for the first time in India.Item Spore Release And Dispersal In Ginger Leaf Spot Pathogen-Phyllosticia Zingiberi(1982) Brahma, R.N.; Nambiar, K.K.N.Spore release from the pycnidium depends upon its contact with water drops. Pycnidtospores were released in the form of cirrus through ostioles. Rain spalsh has a vital role in the dispersal of spores. Multidirectional traps were used for collecting spores carried by rain splash. Though pyclndiospores could be trapped at distances upto 120cm horizontally and upto 75cm vertically from the infection foci, the number of spores caught was higher at closer distance. Spores could also be collected from the dew-drops daring morning hours. The importance of this phenomenon in disease incidence is discussed.Item Spore Release and Dispersal in Ginger Leaf Spot Pathogen-Phyllosticia Zingiberi(1982) Brahma, R.N.; Nambiar, K.K.N.Spore release from the pycnidium depends upon its contact with water drops. Pycnidiospores were released in the form of cirrus through ostioles. Rain spalsh has a vital role in the dispersal of spores. Multidirectional traps were used for collecting spores carried by rain splash. Though pycindiospores could be trapped at distances upto 120cm horizontally and upto 75cm vertically from the infection foci, the number of spores caught was higher at closer distance. Spores could also be collected from the dew-drops during morning hours. The importance of this phenomenon hi disease incidence is discussed.Item Studies on leaf spot disease of ginger caused by Phyllosticta zingiberi RAMAKR(1985) Brahma, R.N.Item Studies On Rhizome Rot Of Ginger And Its Control(1980) Sarma, Y.R.; Nambiar, K.K.N.; Brahma, R.N.In the germ plasm collection none of the types showed reasonable tal trance-to diseases. Field control trials, with different fungicides showed, different degrees of protection, which varied from year to year. Dexon,. Methoxy ethyl mercuric chloride gave better protection as compared toothers. The cultural practices viz. flat bed method and ridges and furrow method VS with and without dolomite application, did not show significant difference in disease reduction. The results are discussed and future line of work suggested.