The electronic version of the Tropical Agricultural Research Volume 25, Number 4, 2014

ISSN: 1016.1422


 
 

Research Articles

 

 

1 Leaf Development and Expansion in Tea [Camellia sinensis (L.) Kuntze] and their Relationships with Thermal Time: A Case Study 350
H.A.S.L. Jayasinghe, L.D.B. Suriyagoda, A.S. Karunaratne and M.A. Wijeratne

 

2 Use of Information and Communication Technology (ICT) by Extension Officers of the Tea Small Holdings Development Authority of Sri Lanka 360
B.A.D. Samansiri and W.A.D.P. Wanigasundera

 

3 Tariff Endogeneity: Effects of Export Price of Desiccated Coconuts on  Edible Oil Market in Sri Lanka 376
K.V.N.N. Jayalath and J. Weerahewa

 

4 Rice Grain Cooling Using Intermittent Adsorption and Desorption of Water Vapour: Development of a Mathematical Model 387

H.K.P.P. Kariyawasam, K.S.P. Amaratunga, B.F.A. Basnayake, L.B.M.D.L. Priyadarshana, D.D.K. Galahitiyawa and K.G.W.U. Karunasinghe

 

5 A Comparative Phylogenic Analysis of Exacum spp. of Sri Lanka with Osbeckia octandra (L.) DC 402
S. Maheswaran, V.A. Sumanasinghe, and P. Samaraweera

 

6 Concentrations of Trace Metals in Selected Land Uses of a Dry Zone Soil Catena of Sri Lanka 412
F. Rosemary, U.W.A. Vitharana, S.P. Indraratne and S.V.R.Weerasooriya

 

7 Use of Unobserved Components Model for Forecasting Non-stationary Time Series: A Case of Annual National Coconut Production in Sri Lanka 423
N.K.K. Brintha, S. Samita, N.R. Abeynayake,I.M.S.K. Idirisinghe and A.M.D.P. Kumarathunga

 

8 Effect of Cadmium on Growth Parameters and Plant Accumulation in Different Rice (Oryzasativa L.)Varieties in Sri Lanka 432
H.M.D.A.K. Herath, D. C. Bandara, P.A. Weerasinghe,M.C.M. Iqbal and H.C.D. Wijayawardhana

 

9

Potential of Pre-harvest Application of Burkholderia spinosa for Biological Control of Epiphytic and Pathogenic Microorganisms on the Phyllosphere of

Banana (Musa spp.)

443
Y.M.U.K. Yapa Silva and D.M. De Costa

 

10

Response of Potato (Solanum tuberosum L.) to Increasing Growing Season Temperature Under Different Soil Management and Crop Protection Regimes in the Upcountry of Sri Lanka

455
K.M.R.D. Abhayapala, W.A.J.M. De Costa, R.M. Fonseka, K. Prasannath,D.M. De Costa, L.D.B. Suriyagoda, P.D. Abeythilakeratne and M.M. Nugaliyadde

 

11 Diversity of Grain Quality Characteristics of Traditional Rice (Oryza sativa L.) Varieties in SriLanka 470
S.P. Rebeira, H.A.M. Wickramasinghe, W.L.G. Samarasinghe and B.D.R. Prashantha

 

12

Who Makes it Click? Understanding the Stakeholders in Agricultural Innovation Systems in Tripura State of India

479
Suchiradipta Bhattacharjee and R. Saravanan
Short Communications
     
13 The status of Diversity and Species Composition of Crabs in Navanthurai Coastal Area in Jaffna Peninsula of Sri Lanka 495
  N. Tharmine, U. Edrisinghe and K. Sivashanthini  
14 Study of Longevity, Fecundity and Oviposition of Trichogrammatoidea bactrae Nagaraja (Hymenoptera: Trichogrammatidae) to Facilitate Mass Rearing 502
  M.C.D. Perera and K.S. Hemachandra