Browsing by Author "Ramakrishnan Nayar, T.V."

Now showing 1 - 8 of 8
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    Banana varieties for intercropping arecanut gardens
    (2007-02-08) Ramakrishnan Nayar, T.V.; Muralidharan, A.
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    Effect of intercropping with tuber crops in root (wilt) affected coconut garden
    (2007-02-08) Sethumadhava Menon, K.; Ramakrishnan Nayar, T.V.
    The effect of intercropping with tubers like tapioca (Manihot esculenta Crantz), elephant foot yam (Amorphophallus companulatus Blume) and yam (Dioscorea alata Linn.) on the yield and disease intensity of coconut palms (Cocos nucifera Linn.) in root (wilt) disease prevelent area was studied for three years from 1975. Yield of coconut showed an improvement in the plot intercropped with elephant foot yam, followed by .yam to a lesser extent. In the plots with tapioca as intercrop and control, the intensity of root (wilt) disease was on the increase whereas in the plots intercropped with yam and elephant foot yam a slight decline in severity of the disease was observed. Yield of tuber was highest in the case of tapioca. Growing all the three intercrops was found profitable The cost benefit analysis showed that coconut+tapioca combination gave the highest net return per rupee invested.
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    Evaluation of banana varieties for intercropping in arecanut gardens
    (2007-02) Ramakrishnan Nayar, T.V.; Muralidharan, A.; Shama Bhat, K.
    Field experiments were conducted at the Central Plantation Crops Research Institute (CPCRI), Research Centre, Kannarar during the period 1975 to 1981 to identify banana varieties suitable for intercropping in arecanut gardens and to study the effects of intercropping with banana on the yield of arecanut palms. Among- the banana varieties tried. Robusta.Mysore Poovan, Red banana and Karpuravalhy were found suitable for intercropping in arecanut gardens. The variety Red banana gave maximum net returns under intercropping in arecanut gardens. There was no adverse effect on the yield of arecanut palms due to intercropping with banana.
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    Intercropping in Arecanut Gardens
    (2007-02) Muralidharan, A.; Ramakrishnan Nayar, T.V.
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    Mixed Farming in Coconut Gardens Root (Wilt) Affected Tract
    (1979) Ramakrishnan Nayar, T.V.; Sahasranaman, K.N.
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    Mixed Farming in Coconut Gardens Root (Wilt) Affected Tract
    (2007-02) Ramakrishnan Nayar, T.V.; Sahasranaman, K.N.
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    The nature and extent of damage to cocoa pods caused by the striped squirrel funambulus tristriatus tristriatus wroughton(Rodentia:Sciuridae) and the relative efficiency of different management methods
    (2007-02) Abraham, C.C.; Ramakrishnan Nayar, T.V.; Chandrasekhar, P.R.
    Studies on the influence of the stage of ripeness and frequency of harvesting of cocoa pods on the extent of damage by Funambulus tristriatus tristriatus showed that when fully mature and orange-yellow pods alone were harvested at intervals of 20-25 days in 1976-77, the mean percentage damage was 52.23. When the pods were harvested at intervals of 15-18 days, just as these developed bronzing in furrows, there was substantial reduction in damage the mean percentage being only 25.83. In another experiment, it was found that covering the pods with punched poly-bags (150 gauge) or gunny bags smeared with fish oil insecticidal soap was effective in protecting the pods against squirrel infestation.
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    Performance of four Fodder Crops in Coconut Garden Under Rainfed and Irrigated Conditions
    (2007-02) Ramakrishnan Nayar, T.V.; Sahasranaman, K.N.
    A field experiment was conducted at Central Plantation Crops Research Institute, Regional Station, Kayangulam, during 1975-77 to comp-pare the performance of four fodder crops—two genotypes of hybrid Napier, viz. Pusa Giant and NB 21, Guinea grass (Maekuenii) and legume Stylosanthes gracilis, in coconut gardens under rainfed as well as under irrigated conditions. The graminaceous fodders Pusa Giant, NB 21 and Guinea grass were on a par in herbage yield but gave significantly higher yield than the legume Stylosanthes, both under rainfed and irrigated conditions. The increase in yield of green fodder due to irrigation was highest in the case of NB 21 (55%) followed by Pusa Giant (44%). Under rainfed conditions and during dry season highest green fodder yields were obtained from Guinea grass.