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International Symposium on Agriculture and Environment (ISAE): Recent submissions

Now showing items 381-400 of 1226

Evaluation of Level of Drought Tolerance in Traditional Rice Cultivars in Sri Lanka at the Seedling Stage

Madurangi, S.A.P.; Ranawake, A.L.; Dahanayake, N. (Faculty of Agriculture, University of Ruhuna, Sri Lanka, 2012-11-29)

Rice consumes more water than any other commercially valuable crop. In the phase of increasing water shortage, introduction of rice cultivars with less water consumption is needed. Sri Lankan traditional rice cultivars ...
Development of a Novel Plant Transformation Method for Selected Crops

Rathnathunga, E.U.U.; Warakagoda, P.S.; Geekiyanage, S. (Faculty of Agriculture, University of Ruhuna, Sri Lanka, 2012-11-29)

Genetic transformation of crops is a straight forward method in crop improvement. Agrobacterium is the unique cellular organism which is capable of transferring genetic material to plants. Callus or explant transformation ...
Detection of Phytoplasma in Selected Agricultural Crops using Antiserum Seveloped Against Phytoplasma Causing Weligama Coconut Leaf Wilt (WCLW) Disease

Ranasinghe, C.; Dassanayaka, M.; Salim, N.; Perera, A.A.K. (Faculty of Agriculture, University of Ruhuna, Sri Lanka, 2012-11-29)

Phytoplasmas are specialized bacteria that are obligate parasites of plant phloem tissues, which are found, associated with numerous plant diseases worldwide. There were no any remedial measures after infection of ...
Potential Applicability of Post Mushroom Substrate as an Alternative Nutrient Media for Oyster Mushroom (Pleurotus Spp) Cultivation

Karunathilaka, H.K.A.; Kariyawasam, J.C. (Faculty of Agriculture, University of Ruhuna, Sri Lanka, 2012-11-29)

The substrate released after mushroom crop harvest, better known as 'post mushroom substrate '(PMs) has shown multifaceted utility in integrated farming which includes recycling for the cultivation of subsequent crops. ...
Effects of Various Gelling Agents on Growth and Development of Adventitious Buds of Purple Coneflower (Echinacea purpurea)

Dahanayake, N.; Sheng, Y.Y. (Faculty of Agriculture, University of Ruhuna, Sri Lanka, 2012-11-29)

Purple coneflower is a perennial medicinal herbaceous plant belongs to family Asteraceae, native to Midwestern and Southeastern United States. In addition to medicinal value, it has received considerable attention in ...
Potential of Alternative Cheap Gelling Agents for in vitro Micro-Propagation of Rice (Oryza sativa L)

Dahanayake, N.; Ranawake, A.L.; Wanitunga, U. (Faculty of Agriculture, University of Ruhuna, Sri Lanka, 2012-11-29)

Plant tissue culture techniques often require optimizing cost reduction by substituting the culture medium with alternative gelling agents. This study was conducted to investigate various commercial products; agar, ...
Germplasm Collection Evaluation and Selection of Promising Suwandel Banana (Musa acum inata ) Accessions

Warusavitharana, A.J.; Perera, M.A.R.L. (Faculty of Agriculture, University of Ruhuna, Sri Lanka, 2012-11-29)

A field experiment of germplasm collection, evaluation and selection of promising Suwandel banana accessions was conducted at the Fruit Crop Research and Development Centre, Horana, Sri Lanka from 2003 to 2010 with the ...
Optimization of the Conditions for Acclimatization of Micro-Propagated Pineapple Propagules

Jayasinghe, A.P.; Weerahewa, H.L.D.; Dassanayake, E. Manel (Faculty of Agriculture, University of Ruhuna, Sri Lanka, 2012-11-29)

Pineapple is one of the major tropical fruit crop in Sri Lanka which has high demand in both local and export market. However, growers are unable to supply fresh pineapples to meet the current demand in the country due ...
Effect of Harvesting Time after Irrigation on Soil Loss due to Cassava Tubers

Sumithra, R.; Srivaratharasan, T.; Thushyanthy, M. (Faculty of Agriculture, University of Ruhuna, Sri Lanka, 2012-11-29)

Impact of land use and land use changes on soil erosion process have received attention and still alarming. Land use changes mainly affect water, wind and tillage erosion. Soil loss due to crop harvesting (SLCH) which ...
Direct Extraction of Microbial DNA from Wastewater using Optimized Treatment Method

Rajapaksha, R.W.P.M.; Vivehananthan, K. (Faculty of Agriculture, University of Ruhuna, Sri Lanka, 2012-11-29)

Microbes that can be cultivated under standard laboratory conditions were detected as limited to only 1-4%. Culture independent direct microbial DNA extraction methods from environmental samples were identified as effective ...
Effect of Substrate pH on Yield Performance of Oyster Mushrooms (Pleurotus ostreatus)

Lokuge, K.S.; Kariyawasam, J.C. (Faculty of Agriculture, University of Ruhuna, Sri Lanka, 2012-11-29)

A research was carried out to investigate optimum pH values for the cultivation of oyster mushrooms(P/eurotus ostreatus). Accordingly, initial pH values of the nine different growth substrates were adjusted as ...
Behavior of Trichoderma viride on Coco - Pith Based Planting Media

Randeni, R.K.B.N.R.; Kelaniyangoda, D.B.; Salgadoe, A.S.A.; Samarakoon, S.M.D.S.B. (Faculty of Agriculture, University of Ruhuna, Sri Lanka, 2012-11-29)

Trichoderma spp. are economically important fungus as a bio agent for controlling disease causing organisms in plants. The fungus is widely found in soil in all climatic zones and incorporation of inocula in to planting ...
Effect of Sodium and Ammonium Bicarbonate in Managing Soft Rot Pathogen (Erwiaia carotovora ) of Carrot (Daucus carota )

Aslam, H.D.M.; Ratnayak, R.M.R.N.K.; Jayawardana, N.W.I.A.; Thilakarathne, B.M.K.S.; Ginigaddara, G.A.S. (Faculty of Agriculture, University of Ruhuna, Sri Lanka, 2012-11-29)

Soft rot in carrot (Daucus carota) caused by Erwinia carotovora is one of the most serious and economically important postharvest diseases in Sri Lanka which causes severe loss especially during storage and transit. ...
Distribution of Soil Water Repellency along Different Particle Sizes of Coastal Sand Dunes in Sri Lanka

Leelamanie, D.A.L.; Samarawickrama, U.I. (Faculty of Agriculture, University of Ruhuna, Sri Lanka, 2012-11-29)

Water repellent soils do not wet spontaneously when a drop of water placed on the soil surfaces. Although water repellency has been reported for all major soil types in the world, occurrence of water repellency in Sri ...
Assessment of Infiltration Rate of Water Repellent Dune Sand

Leelamanie, D.A.L.; Nilangi, G.K.A. (Faculty of Agriculture, University of Ruhuna, Sri Lanka, 2012-11-29)

A water-repellent or a hydrophobic soil does not wet up spontaneously when a drop of water is placed on the surface. The primary effect of water repellency is the reduction of infiltration rates. The purpose of this study ...
Use of Transect Walk and Diversity Fair to Identify Natural Resources, Crop Diversity, Constraints and Requirements for Rainfed Farming: A study at Thanamalwila

Millawithanachchi, M.C.; Liyanage, D.P.P.; Bentota, A.P.; Samarthunge, H.; Prathapasinghe, N.T. (Faculty of Agriculture, University of Ruhuna, Sri Lanka, 2012-11-29)

Village transect walk and diversity fair are two rapid information collection methods within shorter time period. Three transect walks were conducted with the participation of farmers of three villages (Mahawewa, Sooriyaara ...
Genetic Diversity Assessment of Local Finger Millet Accessions Based on Morphological Characteristics

Millawithanachchi, M.C.; Liyanage, D.P.P.; Bentota, A.P.; Samarthunge, H.; Prathapasinghe, N.T. (Faculty of Agriculture, University of Ruhuna, Sri Lanka, 2012-11-29)

Diversity of thirty three local finger millet accessions was assessed using eleven morphological characteristics in hierarchical cluster analysis with Euclidian distance using average linkage method based on the field ...
Farmer Participatory Varital Evaluation of Finger Millets in the Monaragala District of Sri Lanka

Millawithanachchi, M.C.; Liyanage, D.P.P.; Bentota, A.P.; Samarathunge, H.; Prathapasinghe, N.T. (Faculty of Agriculture, University of Ruhuna, Sri Lanka, 2012-11-29)

Farmer participatory varietal evaluations are important to select varieties with more adaptable characteristics for a given environment. Ten varieties including three DOA recommended varieties namely Ravi, Rawana and ...
A Feasibility Study on Sex Reversal of Nile Tilapia (Oreochromis niloticus) Fry using Different Doses of 17- Methyl Testosterone at Different Protein Levels

Amaraweera, K.W.R.R.; Hirimuthugoda, N.Y. (Faculty of Agriculture, University of Ruhuna, Sri Lanka, 2012-11-29)

This research was undertaken to investigate the effect of two protein diets (30% and 40%) and two hormonal doses 40 and 60 mg 17- methyl testosterone (MT)/ 1 kg diet on the sex reversal of Nile tilapia, Orechromis niloticus ...
Performance of Broiler Chicken's Fed Diets Containing Different Inclusion Levels of Black Cumin (Nigella sativa L) seed powder

Rameskaran, N.; Subalini, E. (Faculty of Agriculture, University of Ruhuna, Sri Lanka, 2012-11-29)

Broiler meat is one of the major protein sources in Sri Lanka. The broiler farming in Sri Lanka is becoming non-profitable among small holders mainly due to high feed cost. To utilize the feed efficiently some plant-based ...

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