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 ...
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 ...
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, ...
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 ...
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 ...
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. ...
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. ...
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 ...
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 ...
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 ...
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 ...
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 ...
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 ...
Jayaratne, A.H.R.; Siriwardene, D.(Faculty of Agriculture, University of Ruhuna, SriLanka, 2000-04-24)
Introduction of arbuscular mycorrhiza-(Am) to soils in which they are lacking, present in low numbers or to
soils having inefficient species is limited due to the non-availability of a commercially viable proper
inoculum. ...