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CORD
Published by International Coconut Community
ISSN : 02151162     EISSN : 27218856     DOI : 10.37833/cord
Core Subject : Science, Agriculture,
Agriculture, Biological Sciences & Forestry Library & Information Science
Aims CORD aims to publish original research results and reviews on research and development. While encouraging those involved in research and developments to disseminate their finding it also assists policy makers and planners to be aware of the latest developments in the sector Scope CORD encompasses a broad range of research topics in animal sciences: seedlings and genetics, farming, harvesting, production, health, biotechnology, and production, socio-economic, and policy.
Arjuna Subject : Ilmu Pertanian dan Biologi (Semua) - Ilmu Pertanian dan Biologi (Lain-Lain)
Articles 480 Documents
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SHORT TERM in vitro PRESERVATION OF COCONUT SEED MATERIAL: A METHOD TO FACILITATE FIELD COLLECTION AND TRANSPORT OF COCONUT GERMPLASM S.M. Karunaratne
International Coconut Community Journal Vol 4 No 02 (1988): CORD
Publisher : International Coconut Community

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37833/cord.v4i02.217

Abstract

High cost of transport and the short storage fife of recalcitrant seednuts are two major obstacles to the effective field collection and exchange of coconut germplasm. An in vitro method invol­ving the culture of zygotic embryos of coconut was developed to overcome these problems. The excised embryos were initially subjected to a slow growth phase by culturing in an agar based medium containing nutrients barely sufficient for their survival. After 2, 3 and 5 months in this medium, the embryos were trans­ferred to the gerinination or the development medium for resumption of growth and plant development. 53% of the zygotic embryos preserved in this manner for a period of 2 months produced nor­mal plants when transferred to the gennination medium. The percentage germination dropped to 32 after 5 months storage in the survival medium. The prolonged low temperature storage of cultures (100 and 40C for three months), caused irreversible damage to the coconut embryos and no plants were formed when transferred to the germination medium. The advantages of the technique are that a large number of 'seednuts' can be transported free of pests in a small container and requires no change in the culture medium during the preser­vation period. Unlike the germination medium, the survival me­dium is agar based and hence the risk of containination is low. The non gerridnators can be identified and rejected prior to the germination phase.
VARIATIONS IN THE YIELD OF COCONUTS, AS INFLUENCED BY THE PATTERN OF RAINFALL AND DURATION OF DRYSPELL Jacob Mathew; Amarnath C.H.; Vijaya Kumar K; Mohamed Yusuf; Balakrishnan T K.
International Coconut Community Journal Vol 4 No 02 (1988): CORD
Publisher : International Coconut Community

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37833/cord.v4i02.219

Abstract

Study of the variations in the yield of coconuts in the West Coast of India, in relation to the pattern of rainfall and duration of dryspell revealed that the yield obtained in any year is not directly related with the total rainfall received in the same year or in the preceeding years. Summer rains were having positive correlation with the yield in the succeeding year. About 60% of the variations in the annual yield were due to the changes in the duration of dryspell in the preceeding two years.
COCONUT STEM UTILIZATION IN INDONESIA Hastjarjo Sumardjan
International Coconut Community Journal Vol 5 No 01 (1989): CORD
Publisher : International Coconut Community

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37833/cord.v5i01.220

Abstract

Coconut stem has been utilized in every coconut producing country in some form or other. Its utiliza­tion varies widely from small bridges to houses, furnitures and works of art. In Indonesia it is used mainly in Java, the most densely populated island. In other islands it is rarely used except for foot bridges because of two reasons. First, the farmers are reluctant to fell their coconut trees for its yield, however, small it is. Second, there is still enough supply of forest wood.
COCONUT STEM UTILIZATION IN SRI LANKA Ranjith Mahindapala
International Coconut Community Journal Vol 5 No 01 (1989): CORD
Publisher : International Coconut Community

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37833/cord.v5i01.221

Abstract

In the plantation agriculture in Sri Lanka, coconut occupies the highest area of nearly 420,000 ha. It is distributed in all 24 districts. The estate sector (8 ha or more) comprises 104,000 ha (24.7%) of the area while the balance, 316,000 ha (75.3%) is categorized as small holdings
DESIGN AND DEVELOPMENT OF COCONUT PALM (Cocos nucifera L.) ROOF SHINGLES A.R. Floresca; F.R. Siriban; A.P. Gesmundo
International Coconut Community Journal Vol 5 No 01 (1989): CORD
Publisher : International Coconut Community

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37833/cord.v5i01.222

Abstract

Tapered roof shingles from coconut wood were fabricated and treated separately with four preservatives, namely: copper‑chromearsenate, pentachlorophenol, copper sulfate and copper sulfate + potassium dichromate. Untreated and treated shingles were installed side in roof framed structures and exposed outdoor in the FPRDI "graveyard" area for weather and durability tests. Fabrication, treatment and installation costs of shingles were evaluated. Performance ratings on the different degradations such as splitting/checking and twisting of shingles, retention of original colour/appearance, and protection from weathering and fungal infection in relation to thickness, nailing patterns and treatments of coconut wood roof shingles after 11 months of weather exposure tests were evaluated and statistically analysed. Cost comparison between coconut wood roof shingles and G.I. corrugated sheet gauge #26 are also presented in this report.
EVALUATION OF SOME CHEMICALS FOR THE CONTROL OF BLUE STAIN FUNGUS AND PINHOLE BORER ON FRESHLY SAWN COCONUT TIMBER R. N. Palomar
International Coconut Community Journal Vol 5 No 01 (1989): CORD
Publisher : International Coconut Community

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37833/cord.v5i01.223

Abstract

An investigation was made to determine the relative performance of some chemicals against growth of blue stain fungus and attack of pinhole borer on freshly‑sawn coconut timber during the drying process. The fungicides used were Farmay Plus, Azaconazole and the standard chemical combination of Sodium Pentachlorophenate, BHC and Borax Pentahydrate. Cislin, an insecticide, was mixed with either Farmay Plus or Azaconazole solution. Results after 12 weeks of air drying showed that all fungicides failed to give the desired protection against blue staining. Performance ratings of planed wood samples were within the range of heavy to severe stain infection. Although none of the fungicides was able to effectively control the blue stain fungus, their respective performance have been to some extent ascertained. On the other hand, Cislin showed an acceptable level of protection from pinhole borer infestation on coconut lumber.
EXPOSURE TESTS OF SURFACE TREATED SAWN COCONUT TIMBER R.N. Palomar; P. Jensen; V.K. Sulc
International Coconut Community Journal Vol 5 No 01 (1989): CORD
Publisher : International Coconut Community

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37833/cord.v5i01.224

Abstract

An investigation was made to determine the relative performance of three readily available inorganic chemicals containing either copper or chromium when applied singly or in combination to sawn coconut timber surfaces. The treating solutions, consisting of chromic acid (H2CrO4) sodium chromate (Na2CrO4) and copper sulphate (CuSO4), were applied by trush to wood surfaces with one coating at the rate of approximately 155 grams per square meter. The specimens were exposed outdoors on racks inclined at 450 angle and facing south. Results after 3 years of test showed that treatments with mixture of H2CrO4 and CuSO4 or combination of Na2CrO4 and CO4 performed better than single application of either H2Cr4 or Na2CrO4. The former treatments still showed uniform and pleasing appearance after the exposure period.
THE PRODUCTION AND PROPERTIES OF COCONUT STEM CHARCOAL IN THAILAND J. Dootson; Peyanoot Naka; Maliwan Rattanapruk; Panit Ngangoranatigar
International Coconut Community Journal Vol 5 No 01 (1989): CORD
Publisher : International Coconut Community

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37833/cord.v5i01.225

Abstract

A programme of experimentation and training on the production of charcoal from coconut stems in transportable metal k.ilns was carried out. Comparisons were made between different timber densities, preparation methods and kiln loading systems. Other timber sources and traditional kilns were used. The highest density coconut wood produced the best charcoal and extensive preparation was found to be necessary. Local clay kilns produced excellent charcoal, but were slow and needed considerable fuel. Coconut stem charcoal. production was markedly different from carbonisation of wood from dicotyledonous trees. The charcoal produced was found to have similar calorific value to that from other woods, but was faster‑burning and easier to ignite. Content of volatile matter was low and little ash was produced. The charcoal was often rather wet. A sample of consurners found that the charcoal was better than they had expected. The main complaint was the speed of burning.
FORECASTING THE CROP YIELD OF A COCONUT ESTATE T. S. G. Peiris
International Coconut Community Journal Vol 5 No 02 (1989): CORD
Publisher : International Coconut Community

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37833/cord.v5i02.226

Abstract

Seasonal Autoregressive Integrated Moving Average (ARIMA) process of (0,1,2) x (0,1,1) x 6 that best fits a set of crop‑wise coconut yield data, in Bandirippuwa, Lunuwila is identified with­out using variance stabilization transformation. In this process the present value of the series may be described as a linear function of the past observation of the series and past disturbances. The physical factors such as rainfall, temperature, day length etc. are not required for this method, however the past crop figures in the estate is needed. While such model is useful for short term fore­casting, it also gives the upper and lower limits of the forecasts at a given probability. These intervals would provide the quantified information on the degree of duration of the forecasts.
IDENTIFICATION OF ROOT (WILT) DISEASED COCONUT PALMS BEFORE VISUAL SYMPTOM EXPRESSION V. Rajagoval; B. Sumathykuttyamma
International Coconut Community Journal Vol 5 No 02 (1989): CORD
Publisher : International Coconut Community

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37833/cord.v5i02.227

Abstract

Determination of stomatal resistance (rs) and leaf water potential (ψ) were employed as techniques to distinguish coconut palms (Cocos nucifera L.) devoid of foliar symptoms ('apparently healthy') from those with symptorns of wilt disease viz. flaccidity, yellowing and necrosis ('wilt diseased'). Infected palms are characterized by low stomatal diffusive resistance and reduction in leaf water potential. Among the apparently healthy palms, some exhibited high rs and high ψ, characteristic of truly healthy palms, while others had the trend similar to the 'wilt' diseased palms. The latter group of palms was considered as disease 'suspects' and was closely monitored for the symptom expression. In about 10 to 14 months, all the palms 'suspected' to be diseased had the visual symptoms of the disease.

Page 25 of 48 | Total Record : 480

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