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    Variability, heritability and genetic advance for certain quantitative characters in black pepper
    (Kerala Agricultural University, 1985) Ibrahim, K K; Sukumara Pillai, V; Sasikumaran, S
    Data on 28 genotypes of pepper recorded for three seasons, at the Pepper Research Station, Panniyur was utilized to estimate genotypic and phenotypic variability, heritability and genetic advance in certain quantitative characters of pepper. Spike yield and spike number have shown maximum genotypic and phenotypic variability, but lowest values for heritability. Berry weight has shown highest value for heritability and minimum genotypic and phenotypic variability. The character, spike yield was found to produce highest advance in the expression on selection, whereas only a marginal improvement need be expected for berry weight.
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    N, P and K requirement of black pepper
    (Kerala Agricultural University, 1987) Sukumara Pillai, V; Sasikumaran, S; Ibrahim, K K
    An experiment, to identify the optimum levels of N, P and K for black pepper was conducted at the Pepper Research Station, Panniyur, Kerala in 33 factorial design completely confounding NPaK2. Analysis of the data collected for eight seasons showed that the economically optimum level of nutrients was 50, 100 and 150g of N, P205 and K20 respectively per vine per annum.
  • Item
    Standardisation of period of sampling for foliar diagnosis in pepper in relation to nitrogen, phosphorus and potassium
    (Kerala Agricultural University, 1984) Sushama, P K; Jose, A I; Sukumara Pillai, V
    A study was conducted at the College of Horticulture, Vellanikkara to standardise the most suitable season for foliar diagnosis in pepper. The first mature leaf of fruit bearing laterals of Panntyoor 1 pepper vines grown under the NPK fertilizer trial at the Pepper Research Station Panniyoor, Taliparamba. Cannanore district was made use of. The period just before flushing appeared to be the most suitable for the collection of samples intended for foliar diagnosis of nitrogen, phosphorus and potassium.