Browsing by Author "Pillai, R.S.N."

Now showing 1 - 20 of 22
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    Altitude and areca cultivation
    (2007-02-08) Pillai, R.S.N.; Murthy, K.N.
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    Arecanut yellow leaf disease : Varietal reaction
    (2007-02-08) Ravindran, P.S.; Nampoothiri, K.U.K.; Pillai, R.S.N.; Chandra Mohanan, R.; Mohammed Sayed, A.A.
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    Botany
    (2007-02-08) Pillai, R.S.N.; Ponnamma, K.N.
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    Botany
    (2007-02-08) Murthy, K.N.; Pillai, R.S.N.
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    Bulk-pollination for increased fruit-set in arecanut
    (2007-02-08) Pillai, R.S.N.; Murthy, K.N.
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    Characterisation of Pisifera parents and its relevance to oil palm improvement
    (2007-02-08) Pillai, R.S.N.; Nampoothiri, K.U.K.
    Twenty eight Pisifera palms were identified from tenera x tenera population. These palms were critically studied for morphological features and individual fruit characters. The percentage of fruits containing kernel and embryo (fertile), those with kernel or mesocarp alone and fruits with half filled kernel or having cavity alone varied highly from palm to palm. Fertility status of Pisifera is known to influence the yield potential of Tenera hybrids (dura x pisifera) which is the only planting material used for commercial cultivation of oil palm. The significance of characterising Pisifera palms for selection as pollen parent for the production of good quality oil palm hybrids is discussed.
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    Crop improvement in oil palm - Present status and future strategies
    (2007-02-08) Nampoothiri, K.U.K.; Pillai, R.S.N.
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    Effect of growth regulators on fruit setting of arecanut (Areca catechu L.) Palms
    (1974-10) Yadava, R.B.R.; Murthy, K.N.; Pillai, R.S.N.
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    Evaluation of certain oil palm hybrids under rainfed conditions
    (2007-02) Nampoothiri, K.U.K.; Pillai, R.S.N.; Ravindran, P.S.
    Results of the first comparative trial of oil palm tenera hybrids (Dura x Pisifera) laid out in 1976 indicated that there are significant differences in performance between various combinations. 65 D x 30.103 P, 120 0 x 30.103 P and 92 D x 30.3154 P out-yielded the other eight combinations. These gave an overall yield of 100 kg fresh fruit bunches (FFB) per palm per year which is equivalent to 3 MT of palm oil per hectare. This is a very encouraging performance under rainfed conditions. The highest average of 164 kg per palm per year (equivalent to 4.6 MT oil) was recorded from the combinations involving 65 D in 1986. The main attribute which contributed to the fresh fruit bunch production was the number of bunches. Though the palms started yielding in the fourth year, appreciable yields were obtained only from the ninth year. There was an abrupt Increase in yield during 1986 fallowed by the declining trend In the subsequent years. Implications of these results are discussed.
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    Flowering behaviour and correlation studies in cashew
    (2007-02-08) Murthy, K.N.; Vijayakumar, K.; Pillai, R.S.N.; Kumaran, P.M.
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    Genetic resources of oil palm
    (2007-02) Pillai, R.S.N.
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    A high yielding selection of black pepper variety : Kottanadan
    (CPCRI Research center, Palode, 1998) Ravindran, P.S.; Nampoothiri, K.U.K.; Pillai, R.S.N.; Nair, M.K.; Florence George
    A critical survey was undertaken in 1982 in the main Kottanadan growing areas of Quilon and Trivandrum districts in Kerala , Based on the general vigour and yield performance, 100 vines were selected preliminarily. Detailed observations were recorded on morphological characters, spike characters as well as Filling percentage. The best 49 selections among the above were multiplied and planted in a completely randomised design (CRD) with two controls viz Panniyur-1 (released variety) and local Kottanadan, with eight replications. The trial was conducted for six years. Among the 49 selections evaluated, selection number 2559 recorded the maximum yield potential of 15200 kg as against 10432 kg by Panniyur-1 and 5552 kg by local Kottanadan green pepper/hectare/year. It also recorded 4.8% essential oil, 15.4% oleoresin and 3.0% pipeline content, Considering the high yield potential and better quality, this selection 2559 (PLD-2) was recommended for release in Trivandrum and Quilon districts of Kerala during 1995.
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    Mass Pedigree Selection in Arecanut (Arecacatechu L). A Case History on the Application of the Method in a Perennial Tree Crop
    (2007-02) Ravindran, P.N.; Bavappa, K.V.A.; Pillai, R.S.N.; Ramachander, P.R.; Nair, M.K.; Nair, B.P.; Vijayakumar, K.
    This paper deals with the results of a mass pedigree selection experiment carried out in the South Kanara cultivar of arecanut. The data collected from the experiment has been utilised for various genetical studies, such as correlated responses, genotypic and phenotypic correlations, path coefficient analysis, heritability, and genetic gain achieved through selection. The results of these analysis are presented and discussed.
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    The Occurrence of Barren Nuts in Arecanut
    (2007-02) Pillai, R.S.N.; Murthy, K.N.
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    Preliminary Investigations on Pisifera with Special Reference to the Genetic Improvement of Oil Palm (Elaeis Guineensis Jacq.) in India
    (2007-02) Pillai, R.S.N.; Nampoothiri, K.U.K.
    Seeds of the oil palm hybrid tenera is being imported for commercial planting in India. However, recent investigations show that suitable mother palms (dura) and the pollen parent (pisifera) are available in the country. In a tenera x tenera plantation, 11 fertile and 11 sterilepisifera palms were identified. Filfy-nine dura palms yielding above 100 kg fresh fruit bunches annually per palm have also been located. Preliminary results on tenera produced by using these dura mother palms are encouraging. Feasibility of indigenous production of genetically superior tenera hybrids is discussed.
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    Seasonal Variation In Oil Palm Yield Under Rainfed Conditions
    (1996) Jacob Mathew; Nampoothiri, K.U.K.; Pillai, R.S.N.; Kesavan Nampoothiri, C.
    Month-wise compilation of the harvest data available from a large oil palm plantation at Palode revealed considerable variation in yield and associated characters between months. Weight of FFB harvested during March to July was found to be generally high. In general, about 45% of the total yield was obtained during the period March to May, and nearly 23% was the share of June- July. The remaining 325 was harvested during the seven months period from August to February. The maximum quantity harvested was during April (18.1% of the total annual production) and lowest share of 3.15 was in December. In real terms, the mean weight of FFB harvested per hectare in a month was 2.0 tons during March to May, compared to 1.5 tons during June-July and 0.6 tons for the rest of the period. The increased share in production during the summer and early monsoon periods was due to the more number of palms and bunches harvested during this period. Mean bunch weight was also comparatively high during this period. In younger palms the seasonal variations were more conspicuous, and as palms grew older, the seasonal differences in yield and yield attributes narrowed down. In the years of bumper yield, the proportion of total yield obtained during yield, the proportion of total yield obtained during March to May was over 53%. The significance of seasonal variation in FFB production in relation to processing requirement is also discussed.
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    Strategies For Self Sufficiency In Indigenous Oil Palm Seed Production
    (1993) Nampoothiri, K.U.K.; Pillai, R.S.N.; Ravindran, P.S.