	Research Articles	Page

1	Typhlocybine Leafhoppers (Hemiptera: Auchenorrhyncha: Cicadellidae) Associated with Horticultural Crops in Sri Lanka	1
	R. Gnaneswaran, C.A. Viraktamath, K.S. Hemachandra, D. Ahangama, H.N.P. Wijayagunasekara and I. Wahundeniya.
2	Lethal and Sub-lethal Interactive Toxicity of Endosulfan and Lindane on Black Tiger Shrimp (Penaeus monodon Fabricius)	12
	J.A. Sumith, N. Leadprathom and P. Parkpian
3	Assessment of Dimethoate Toxicity on Compost Worm (Eisenia andrei) Using Earthworm Avoidance Test	25
	P.M.C.S. De Silva and N.J.De S. Amarasinghe
4	Predatory Insects of Pest Insects in Vegetable Eco System of Mid Country Region of Sri Lanka	34
	S. Mayadunnage, H.N.P. Wijayagunasekara, K.S. Hemachandra and L. Nugaliyadda

II	Agricultural Economics

5	Trade Liberalisation and Export Demand Function: The Case of South Asia	42
	D. Sajeewani and A. Wijeweera
6	Modelling Tourism Demand using Cointegration Analysis: A Case Study for Tourists Arriving from United Kingdom to Sri Lanka	50
	E. Lelwala and L.H.P. Gunaratne
7	Impact of Different Tariff structures on Residential Water Demand: A Case Study from Kandy, Sri Lanka	60
	S. Thrikawala, L.H.P. Gunaratne and E.R.N. Gunawardena
8	Transaction Costs and Household Participation in Community-based Village Tank Aquaculture in Dry Zone	73
	A. Senaratne, L.H.P. Gunaratne and K. Karunanayake

III	Postharvest Physiology and Technology

9	Site Specific Nutrient Application on Yield, Quality and Postharvest Life of Cauliflower (Brassica oleracea L.)	89
	J.P. Kirthisinghe, K.H. Sarananda and D.Kumaragamage
10	Effect of Hermetic-Storage on Milling Characteristics of Six Different Varieties of Paddy	102
	R.F. Hafeel, B.D.R. Prasantha and D.M.N. Dissanayake
11	A Comparative Study of Postharvest Processing Methods for Little Millet (Panicum miliare L.)	115
	U. Ravindra, J. Vijayakumari, S. Sharan, K.P. Raghuprasad and R. Kavaloor
12	Maturity Indices for Harvesting of Beans (Phaseolous vulgaris L.) Variety Kentucky
	Wonder Green in Dry Zone Cultivations in Sri Lanka	123
	W.A.H. Champa, W.A.P. Weerakkody and K.B. Palipane
13	Evaluation of Finger-Feel Firmness as a Subjective Measurement of Tomato Quality Degradation at the Retail Market	139
	C.L. Ranatunga, H.H.E. Jayaweera and T.R. Ariyaratne

IV	Food, Nutrition and Animal Science

14	Calcium Intake and Bone Mineral Variables among Adolescent Schoolgirls in Rural and Urban Areas of Sri Lanka	143
	R.M.T.K. Ranatunga, K.D.R.R. Silva, K.N. Balasuriya, R. Sivakanesan and S.T.C. Mahawithanage
15	Total Antioxidant Capacity of Selected Grades of Black Tea Grown in Different Geographical Elevations in Sri Lanka	155
	R.J. Kamal, A.W.M.R. Wadood and K.D.R.R. Silva
16	Effect of potential Prebiotics on the survival of Probiotic Lactobacillus acidophilus	162
	S. Jayatilake, A. Chandrasekara and T.Madhujith
17	Cooking and Eating Quality Traits of Some Sri Lankan Traditional Rice Varieties across Yala and Maha Seasons	168
	W.K.S.M. Abeysekera, H.P.P.S. Somasiri, G.A.S. Premakumara, A.P. Bentota, D. Rajapakse and N. Ediriweera
18	Production of Genetically Superior Goats through Embryo Transfer Technology in Sri Lanka	177
	G.D.R.K. Perera, P.G.A. Pushpakumara, L.N.A. De Silva and A.B.D. Alexander
19	Effect of the Colour of Light on Growth Performance, Behaviour and Bone Parameters of Broiler Chicken	185
	D. Senaratna, T. Samarakone, N.S.B.M. Atapattu and H.A.D. Nayanarasi

V	Plant Breeding and Biotechnology

20	Identification of Discriminating Morphological Descriptors for Characterization of Tea (Camellia sinensis L.) Germplasm in Sri Lanka	193
	J.H.N. Piyasundara, M.T.K. Gunasekare and I.P. Wickramasinghe
21	Production of New Varieties of Tomatoes Based on Yield and Fruit Quality Characters Using Molecular and Classical Breeding Techniques	200
	L.M.H.R. Alwis, A.L.T. Perera and W.L.G. Samarasinghe
22	Direct Shoot Organogenesis from Nodal and Leaf Explants of Munronia pinnata (Wall.) Theob: a Valuable Medicinal Plant	213
	P. M.P.C. Gunathilake, A.G.N.I. Abayagunawardhana, S. Wimalasiri, U.R. Sangakkara and J.P. Eeswara
23	Somatic Embryogenesis and Plant Regeneration from Unfertilised Ovary Explants of Coconut (Cocos nucifera L.)	226
	P.I.P. Perera, D.M.D. Yakandawala, J.L. Verdeil, V. Hocher and L.K. Weerakoon
24	Modification of Plant Architecture of Hemidesmus indicus (L.) R.Br. (Iramusu) by In vitro Colchicine Treatment	234
	D.S.K. Nagahatenna and S.E. Peiris
25	The Effect of Plant Growth Regulators on Anther Culture Response and Plant Regeneration in Selected Sri Lankan Indica Rice Varieties, Japonica Varieties and Their Inter-Sub Specific Hybrids	243
	H.M.I. Herath, D.C. Bandara, P.K. Samarajeewa and D.S.A. Wijesundara

VI	Business Management and Extension

26	An Assessment of Health Service Quality: A Case Study of a Teaching Hospital in Central Province of Sri Lanka	251
	M.H.M. Rishard and S.S. Kodithuwakku
27	Influence of Marketing Mix in Prescribing Pharmaceutical Products by Ophthalmologists in Sri Lanka	260
	T. Sayandhan, S.S. Kodithuwakku and L.H.P. Gunaratne
28	An Analysis of the Effects of the Scale of Irrigation on Paddy Production in Anuradhapura District	269
	T. Kemah and S. Thiruchelvam

29	Development of Sustainable Ecological Vegetable Production Systems in Matara District, Sri Lanka: an Intervention Approach	279
	K.M.C. Fernando, G. Lieblein, C. Francis, S. Subasinghe and L.Weerakoon

VII	Water Resources Development and Management

30	Assessment of Non-Revenue Water in Hantana Water Supply Scheme	290
	L.L.A. Peiris, N.D.K. Dayawansa and R. P. De Silva
31	Vulnerability Assessment for Shallow Aquifers Using Chemical Quality of Groundwater: A Case Study from Thirunelvely and Kondavil in Jaffna District	303
	T. Mikunthan and C.S. De Silva
32	Microbial Water Quality Variations in Different Water Sources in the Pussalla Oya Catchment and Pollution Contributions by Communities	313
	I.H. Rajapakshe, L.W. Galagedara and M.M.M. Najim
33	Modeling the Influences of Unnichchai Irrigation Tank on the Batticaloa Lagoon	326
	S. Thayananth, S. Santharooban, M. Manobavan and G.W.A.R. Fernando

VIII	Agronomy and Forestry

34	Effect of Plant Spacing on Yield and Fruit Characteristics of Okra (Abelmoschus esculentus)	336
	S.S. Paththinige, P.S.G. Upashantha, R.M. Ranaweera Banda and R.M. Fonseka
35	Effect of Nutrient Levels and Biofertilizer on Growth and Yield of Paddy under System of Rice Intensification (SRI) and Conventional Methods of Cultivation	343
	D.M.D.I. Wijebandara, G.S. Dasog, P.L. Patil and M. Hebbar
36	Identification of Tree Resources Outside Forest in Up Country of Sri Lanka Using Medium Resolution Satellite Imagery	354
	K.T. Premakantha, D.K.N.G. Puspakumara and N.K.D. Dayawansa
37	Effects of Some Agronomic Practices on Dry Matter Partitioning of Boerhavia diffusa L	366
	S. Arulmageswaran, D.K.N.G. Pushpakumara and S.P. Nissanka
38	Impact of Long Term Shade on Physiological, Anatomical and Biochemical Changes in Tea (Camellia sinensis (L.) O. Kuntz)	376
	T.L. Wijeratne, A.J. Mohotti and S.P. Nissanka

	Short Communications

39	Effects of Type and Size of Stem Cutting and Propagation Media for Rapid Multiplication of Pineapple (Ananas comosus)	388
	S.R.W.M.C.J.K. Ranawana and J.P. Eeswara
40	Impact of Soil Moisture on Growth, Yield and Nodulation of Mung Bean (Vigna radiata) Growing in the Yala Season on Non Calcic Brown Soils	395
	M.R.D.L. Kulathunga, S.H.S.A De Silva and U.R. Sangakkara
41	Development of a Low Cost and Productive New Nutrient Formulation for Simplified Hydroponics Using Commercial Grade Chemicals	400
	M.D.J.S. Saparamadu, W.A.P. Weerakkody, H.D. Gunawardhana and R.D. Wijesekera
42	Low Cost Particle Matrices: Alternatives for Agar in In vitro Sub-Culturing of Anthurium andreanum	405
	K.A.C.N. Seneviratne, D.S.A. Wijesundara, A. Yogarajah, V.A. Sumanasinghe, K.G.R.A. Kandagolla, L.G. Shu and Z. Jinyu
43	Potential of Dentro-Thermal Energy Use In Organic Tea Industry: An Extended Benefit Cost Analysis	409
	V.M.B.A. Priyantha and S.Thiruchelvam
44	Species of Nephotettix Matsumura (Hemiptera: Auchenorhyncha: Cicadellidae) in Sri Lanka	414
	R. Gnaneswaran, K.S. Hemachandra, D. Ahangama, H.N.P. Wijayagunasekara and I. Wahundeniya
45	An Analysis of Margins of Preferences for Food and Agricultural Products Provided by South Asian Regional Trade Agreements: Sri Lankan Perspective	419
	D. Hemachandra, B. Wijerathne and J. Weerahewa