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Genetic improvement of the coconut cultivar san Ramon
Get PDFThe tall form of coconut, San Ramon was imported to Sri Lanka from the Philippines and was first established in the North Western province. The open pollinated seed obtained from the first introduction and planted at the Coconut Research Institute (CRI) from the genetic base for SanRamon improvement at present. This cultivar inherits the potential of producing 51%more copra per nut than Sri Lanka tall palms and 50% more copra per nut than the improved tall, CRIC 60. The mean copra yield per nut recorded for San Ramon (selfed), Sri Lanka tall and CRIC 60 was 371g, 240g and 246g respectively. Preliminary investigations have shown that the oil extraction efficiency of copra is 776 ml per Kg of copra for tall x San Ramon whilst for both Sri Lanka tall and CRIC 60, it is 740 ml. The results of this study strongly justify the use of San Ramon and its corsses for copra and oil industry in Sri Lank
Pheromone baited trap for the management of red palm weevil, Rhynchophours ferrugineus F. (Coleoptera:Curculionide) population in coconut plantation
Get PDF4-methyl-5-nonanol (ferrugineol), the major component of the aggregation pheromone of rhynchophorus ferrugineus F. was evaluated as a lure for trapping of this pest in coconut plantations in Sri Lanka. Trap design, longevity of ferrugineol in field conditions, and the effect of trapping on damage incidence of R.ferrugineus were studied. N-pentanol, a known compound present in coconut stem volatiles was used in combination of ferrugineol in all tested traps. Trap designs tested were; an open plastic bucket, a funnel trap, and a modified metal trap. The open plastic bucket (5L) baited with ferrugineol -pentanol, which was hung on coconut palm stem at 1.5m, caught significatly more number of adult weevils than ferrugineol pentanol baited funnel and metal traps. An open plastic bucket trap was six times less expensive than the metal trap currently recommended by the Coconut Research Institute, Sri Lanka. Ferrugineol remained effective as a balt for 12 weeks under field conditions. High capture rates of adult R. ferrugineus were obtained in ferrugineol baited open bucket traps in plantations where the initial damage incidence was high. Monthly surveys of individual palms during pheromone trapping revealed that a sharp reduction of the number of coconut palms demaged by R. ferrugineus in 10 hectare experimental blocks. Continuous trapping of weevils with ferrugineol over a period of time significantly lowered the infestation of this pest
Progress report of the project on enhancing the income andemployment opportunities in the coconut sector throughconservation and sustainable use of special coconut ecotypes.
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A molecular approach to improve the efficiency of breeding ofCocos nucifera by marker assisted selection
No full textHuman resource development for biotechnology in the CoconutResearch Institute of Sri Lanka.
No full textIrrigation in small holder coconut cultivation in Kerala , India - a financial analysis
Get PDFFinancial analysis of irrigation investments in existing as well as new plantations of coconut was conducted. The annualized capital costs and variable costs were included in the cost of irrigation. The levelised annual cost approach was used to compute the pumping cost. The study was conducted in a mixed cropping system. The effective area under each crop was computed and the allocation of irrgation costs was done accordingly. In all the land types the investments in irrigation was found to be highly feasible financially. The financial ratios were found to be higher in midland categories indicating that compated to the other regions, the midland region had higher potential for investment in irrigation
