Browsing by Author "Giridharan, M P"

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    Constraints perceived by the task force members in the people's campaign for decentralized planning
    (Kerala Agricultural University, Vellanikara, 2001) Abdul Kareem, K; Giridharan, M P
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    Effect of gamma irradiation In ginger
    (Department of Horticulture (Plantation Crops and Spices), College of Horticulture, Vellanikkara, 1984) Giridharan, M P; Balakrishnan, S
    Investigation was carried out at the College of Horticulture, Vellanikkara, during 1983 – 84, to study the effect of gamma irradiation on germination, vegetative growth, flowering, yield, quality attributes and incidence of soft rot disease in ginger using four doses of gamma rays (0.7, 1, 1.5, 2.k rad). Irradiation treatments produced inhibitory effects on the germination of ginger rhizomes. The plant height, tiller production, leaf production, leaf size and leaf area index decreased with the increase in irradiation dosages. Flowering behaviour of ginger could not be altered by the levels of gamma irradiation tried. Rhizome yield reduced as the irradiation dose increased. The treatments did not differ significantly with regard to essential oil and oleoresin content of both green and dry ginger ; oleoresin of ginger peel and percentage recovery of dry rhizomes. However, the incidence of soft rot disease could be highly reduced by gamma irradiation.
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    Evaluation - cabbage varieties for the high range zone of Kerala
    (Kerala Agricultural University, 1996) Gopalakrishnan, T R; Varghese, C A; Giridharan, M P; Devadas, V S
    Evaluation of cabbage varieties for five years at the Regional Agricultural Research Station, Ambalavayal resulted in the identification of a variety "September" adaptable to high altitude zones of Kerala. September is characterised by flat head with medium lightness having an average weight of 1.12 kg and diameter of 17 cm. Under the mild subtropical climate during winter, the establishment of plants and heading ability of the variety are excellent.
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    Identification and characterization of jackfruit types (Artocarpus heterophyllus Lam. ) In Kasargod district
    (Department of Pomology and Floriculture, College of Agriculture,Padannakkad, 2016) Nimisha, C; Giridharan, M P
    The study entitled “Identification and characterization of jackfruit types (Artocarpus heterophyllus Lam.) in Kasargod district” was undertaken at the College of Agriculture, Padannakkad during 2014-16. The study included survey and identification of jackfruit types in Kasargod district and characterization of selected jackfruit types based on IPGRI descriptor. The data were subjected to statistical analysis to find out the extend of variation among the jackfruit types, to locate the traits correlated with fruit yield and quality and to analyze the genetic divergence by cluster analysis. Wide variability was observed among the jackfruit types studied. In Kasargod district, ripening of jackfruits started by December and extended up to September. However, the main fruit maturing season was from March to May. Seedlessness, gumlessness, flakelessness, high TSS (above 25˚B), fruiting more than thrice in a year, very early ripening (December), high flake percentage and late ripening with good table quality were the important desirable characters observed. Fruit weight exhibited significant positive correlation with number of flakes per fruit, flake percentage and total seed weight per fruit. Perigone percentage showed significant negative correlation with fruit weight, flake thickness, total seed weight, TSS and non-reducing sugar. Cluster analysis resulted in six non-overlapping clusters based on quantitative characters of fruit and four non-overlapping clusters based on qualitative characters of fruit. Among the jackfruit types subjected to characterization, KJ 180, KJ 182, KJ 183, KJ 185, KJ 186, KJ 356 and KJ 397 were the most promising types identified for dessert purpose. KJ 173 (flakeless) was an ideal type for tender jack purpose. Fruiting more than thrice in a year with overlapping fruiting phase was observed in KJ 121. All these promising jackfruit types deserve further research intervention for conservation and popularization.