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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 4 Documents
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Search results for , issue "Vol 14 No 2 (1998): CORD" : 4 Documents clear
An Evaluation of Different Mulches Used in Soil Moisture Conservation of Coconut Lands Arachchi, L. P. Vidhana
International Coconut Community Journal Vol 14 No 2 (1998): CORD
Publisher : International Coconut Community

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37833/cord.v14i02.317

Abstract

An investigation on the ability ofdifferent types of mulches to conserve soil moisture and their effect on coconutpalm (Dwarfx Tall; CRIC 65) was carried out in Madampe soil series at Bandirripuwa Estate, Lunuwila located in agro ecological region of IL3 of Sri Lanka. Different types ofmulches compared in this study were dried coconut fronds and leaves, cover crop with Pueraria phasioloides and Brachiaria milliformis versus bare soil (Control). Soil moisture status was monitored using the neutron scattering technique. Leaf water potential of coconut with respect to different treatments was also monitored during dryperiod. Results showed that Brachiaria milliformis and Pueraria phasioloides extracted significantly (p<0.001) more waterfrom soils than diied mulch and the control. The amount of water extracted in the above treatments were 74.4Yo, 62.5Yo, 59.79yo and 61.3% respectively. However, the extraction was not significantly different when the rainfall was greater than 100 mm. About 33 mm of water retained in Brachiaria milliformis introduced soil profiles even by the end of dry period Water losses by Pueraria phasioloides grown plots, specially through evapotranspiration, were 1higher in initial stages of the dry period, but later stage losses were lower than that of Brachiaria due to defoliation of Pueraria leaves during severe dry period Leaf water potential of coconut with respect to stress conditions of different treatments revealed that Pueraria phasioloides and Brachiaria milliformis did not adversely affect coconut palm grown in Madampe series, although those live materials extracted more waterfrom soilprofile compared to the other treatments. In general, dry mulching wasfound to be the most efficient moisture conservative practice that can be adopted for coconut lands.
EFFECT OF DIFFERENT BRANDS OF ACTIVATED CARBON ON GROWTH AND DEVELOPMENT OF COCONUT (Cocos Nucifera L) EMBRYOS IN VITRO Zosimo S. Bonaobra III; Erlinda P. Rillo; Osmundo D. Orense
International Coconut Community Journal Vol 14 No 2 (1998): CORD
Publisher : International Coconut Community

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37833/cord.v14i02.318

Abstract

The effect of different brands of activated charcoal [Merck GR (Art. 2186), Sigma acid washed (C‑4386), Sigma neutralized (C‑3790), and Duchefa neutralized (C‑1302)] on growth and development ofcoconut zygotic embryos in vitro was evaluated. Analysis of data noted after one month revealed that there was no significant difference on percentage germination, shoot length, and number ofprimary root of cv. Laguna Tall embryos cultured in Y3 liquid medium supplemented with 2.5gll AC of different brands. Length of primary root of embryos cultured in Duchefa neutralized AC was significantly different from those in Sigma neutralized AC only after one month from initial culture. For the succeeding periods (2‑4 months), no significant difiference was observed among the treatments in terms of increment in plant height, number of scale and true leaves and length ofprimary root. Statistical analysis revealed thatpercentage ofseedlings with primary, secondary and tertiary roots did not differ significantly among the treatments 1‑4 months from initial culture. Results suggest that any brand (even alternately) can be used satisfactorily in the in vitro culture of coconut embryos.
GENETIC AND SEASONAL VARIATION IN COCONUT PRODUCTION K. SATYABALAN
International Coconut Community Journal Vol 14 No 2 (1998): CORD
Publisher : International Coconut Community

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37833/cord.v14i02.319

Abstract

Variation in the yield of nuts in the coconut palms due to genetic differences of the palms and seasonal effects in the West Coast Tall cultivarpalms grown in a well‑maintained estate in Kerala on the west coast of India was studied every month continuously for a period offive years. The varying yield capacity and bearing tendency noticed in the palms may be attributed to the genetic differences between the palms. The marked fluctuations in the yield of palms classified as high yielders‑ those which yield 80 nuts and above per palm per year and low yielders ‑ those which yield 10 nuts and above per palm per year, do not follow a specific trend as in the case of seasonal variations. The yield of nuts in 66 palms in the estate which comprised of all the three yield groups during the different seasons of the year identified in Kerala as Hot Weather Season during the months of March, April and May, Southwest Monsoon Season during the months of June, July and August, Northeast Monsoon Season during the months of September, October and November and Cold Weather Season during the months of December, January and February showed that high yields of the palms in all the three yield groups were obtained mainly during the Hot Weather Season of the year. This pattern of production due to seasonal influence is seen to persist year afteryear irrespective of the magnitude of the yield obtained, with minor variations. This is attributed to the cyclic influence of varying seasons in a year on the different critical stages of initiation and development of the inflorescence which takes about 32 months from its initiation to open ing and during the development of the nut which takes about 12 months to develop from a fertilized female flower. The palms in the high yield group exhibit only slight variation and maintain their high yields than those in the medium and low yield groups. Data on the yield of palms during a period of five years indicate that those palms which continuously yield 80 nuts and above per year regularly for at least four years turn out to be regular bearers and high yielders. They should, as far as possible be selected as mother palms for propagation.
TODDY PRODUCTION MODELS OF PB 121 AND KHINA 1 COCONUT HYBRIDS Margaretha M.M. Rumokoi; Rusthampin H. Akuba
International Coconut Community Journal Vol 14 No 2 (1998): CORD
Publisher : International Coconut Community

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37833/cord.v14i02.320

Abstract

Tapping PB‑121 for coconut toddy can possibly reduce the loss ofproduction due to Phytophora infection and increasesfarmers income. Experiment was conducted in order to know the potential production of toddy of PB‑121 hybrid compared to KHINA‑1. The experiment was carried out at Pandu Experimental Garden of Research Institute for Coconut and Palmae Manado, North Sulawesi. Fourteen spathes of sixty palms or each hybrid was tappedfrom May 1991 to May 1992. Observations were made on toddy volume and its sucrose content measured daily in the morning (07:00‑09:00) and afternoon (14:00‑18:00). Multiple regression models were used to fit the production and sucrose content pattern of toddy. The result showed that coconut toddy production of PB‑121 was higher than KHINA‑1 from each spathe. Ae average toddy production of PB‑121 was 52.99 litre per spathe and KHINA‑1 was 46 65 litre per spathe. The sucrose contents of KHINA‑1 and PB‑121 were not significantly different. Model of the toddy production of KHINA‑l and PB‑121 differed but there was no difference between the model ofsucrose content of those two hybrid coconut varieties.

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