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Volume 03 (2000)
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Issue No 01

Issue No 01

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Unknown author (Faculty of Agriculture, University of Ruhuna, SriLanka, 2000)
Contents

Unknown author (Faculty of Agriculture, University of Ruhuna, SriLanka, 2000)
Editorial Board

Unknown author (Faculty of Agriculture, University of Ruhuna, SriLanka, 2000)
Effect of gamma irradiation on micro-organisms, essential oil content and volatile oil component of spice.

Wijeratnam, R.S. Wilson; Sivakumar, D.; Ratnayaka, A. (Faculty of Agriculture, University of Ruhuna, SriLanka, 1999-10-22)

Gamma irradiation at 5 kGy and 7.5 kGy reduced the bacterial and fungal contamination of cardamom, nutmeg and pepper to commercially acceptable levels. Bacillius sp, Aspergillus sp and Penicillium sp were the predominant ...
Use of milk progesterone RSA to determine factors affecting the success rate of artificial insemination services in cattle in mid-country smallholder farms in Sri Lanka

Abeygunawardena, H.; Alexander, P.A.B.D.; Abeygunawardena, I.S.; Perera, B.M.A.O. (Faculty of Agriculture, University of Ruhuna, SriLanka, 2000)

A measurable quantity of progesterone in a blood or milk sample signifies the presence of luteal tissue in the ovary. Thus progesterone concentration in blood or milk samples collected at strategic intervals when interpreted ...
Effect o f some soil moisture conservation practices on soil moisture regime during field establishment o fb la ck pepper {Piper nigrum) in mid country sloping lands of Sri Lanka

Sumanasena, H.A.; Hartmann, R. (Faculty of Agriculture, University of Ruhuna, SriLanka, 2000-02-16)

The high degree of plant mortality and slow growth rate are major problems during the establishment phase of black pepper and other perennial crops in the degraded sloping Sands of mid country in Sri Lanka. Therefore, ...
Soil water dynamics in a grassland of the mid country intermediate zone of Sri Lanka

Nayakakorala, H.B. (Faculty of Agriculture, University of Ruhuna, SriLanka, 1999-09-30)

Temporal and spatial variability off soil water content (SWC) in a catchment affects surface and sub-surface runoff, modulates evapotramspiratiom and determines the degree of ground water recharge. The present understanding ...
Use of neutron moisture meter in soil-pSant-water relation studies of rubber (Hevea brasiliensis)

Samarappuli, Lalani; Yogaratnam, N.; Hettiarachchi, R.; Karunadasa, P.; Mitrasena, U. (Faculty of Agriculture, University of Ruhuna, SriLanka, 1999-09-30)

Volumetric moisture content data obtained from 12 positions in relation to planting points over a period of 12 months indicate that the distances varying from 0-120 cm from the trunk of young rubber tree are suitable for ...
Use of a root bioassay method to determine phosphorous availability and uptake for some crop species

Dissanayake, D.M.A.P.; Atkinson, D.; Edwards, A.C. (Faculty of Agriculture, University of Ruhuna, SriLanka, 1999-09-29)

A 32P root uptake bioassay method was applied both to sand culture and soil culture grown seedlings to test the potential value of this method for determining the P availability and uptake for some selected crop species. ...
N fixation and N transfer in Maize/Cowpea and Sorghum/Cowpea intercropping systems as determined by ISN isotope dilution technique

Dayatilake, G.A.; Subasinghe, S.; Senaratne, R. (Faculty of Agriculture, University of Ruhuna, SriLanka, 1999-09-23)

N fixation and N transfer in maize/cowpea and sorghum/cowpea intercropping systems, as determined by 1SN isotope dilution technique was studied in two field trials conducted at Bata-atha, in the dry zone of Sri Lanka. ...
Use of 15N to study the N fixation, N transfer and yield of intercropped groundnut (A ra ch is h ypogaea L.) as affected by genotype and the root barrier

Subasinghe, S.; Senaratne, R.; Pemadasa, M. A. (Faculty of Agriculture, University of Ruhuna, SriLanka, 2000-09-29)

l5N-aided intercropping studies of maize/groimdsiut (Experiment 1), and sorghum/groundnut (Experiment 2) with and without below-ground barriers were conducted. The results revealed that the groundnut variety X-14 was ...
Biological N2 fixing capacity of Gliricidia septum and Calliandra caiothyrsus under different agroclimatic conditions

Gunaratne, W.D.L.; Heenkenda, A.P.; Premakumara, K.V.S.; Bandara, W.M.S.R. (Faculty of Agriculture, University of Ruhuna, SriLanka, 2000-09-29)

Biological nitrogen fixing capacity of Gliricidia sepium and Callianndra caiothyrsus was investigated under field conditions in two contrasting locations in tlie Mid- country Intermediate and Mid-eountry Wet Zones of Sri ...
Potential of Azoiia as a biofertilizer for rice farming in Sri Lanka: Demonstrated by isotopic techniques

Kulasooriya, S.A. (Faculty of Agriculture, University of Ruhuna, SriLanka, 2000-08-13)

Studies using the stable, heavy isotope of nitrogen (15N) were conducted to: (i) estimate quantitatively nitrogen fixation by Azolla under rice field conditions and (ii) evaluate the uptake offAzolla-N and urea-N by rice ...
Development and release of gamma ray induced sesame mutant ANK-S2 in Sri Lanka

Pathirana, R.; Weerasena, L.A.; Bandara, Priyanthi (Faculty of Agriculture, University of Ruhuna, SriLanka, 2000-12-12)

Epiphytotic conditions and non-availability of resistant germ plasm prompted the use of mutation induction technique to develop a variety resistant to phytophthora blight caused by Phytophthora nicotianae var. parasitica ...
Photosynthesis and assimilate partitioning characteristics of the coconut palm as observed by 14C labelling

Jayasekar, C.; Jayasekar, K.S.; Bowe, G.D. (Faculty of Agriculture, University of Ruhuna, SriLanka, 2000-06-11)

A technique was developed on the use off l4COz rapid labelling of foliage and to ascertain photosynthesis and partitioning characteristics of labelled assimilate into other parts of the coconut palm. An eight-year-old Tall ...
Use of Nuclear Techniques for Improving Livestock Production and Health in Sri Lanka: A Review of Studies Conducted and Strategies for Technology Transfer

Perera, B.M.A.O.; Abeygunawardena, H. (Faculty of Agriculture, University of Ruhuna, SriLanka, 2000-11-07)

The use of nuclear techniques for studies on livestock production in Sri Lanka commenced in the 1970’s with the establishment of a Radioimmunoassay (RIA) technique for measuring reproductive hormones in the blood and ...

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