Prof. PLAG Alwis

BSc. Agric (Ruhuna), MSc. Agric Machinery (ENSAM), PhD Agric Machinery (Montpellier)

Professor in Agricultural Engineering
Dept of Agric Engineering
Faculty of Agriculture, University of Ruhuna, Sri Lanka


Phone

:

+94 41 2292200

Fax

:

+94 41 2292382

E-mail

:

aalwis@ageng.ruh.ac.lk

FULL NAME

PLAG Alwis

 

PERSONAL

Born December 21, 1957

Married, One child

 

NATIONALITY

Sri Lankan

 

ACHIEVEMENTS

2001 : Recipient of National Science Foundation Merit awards for scientific research.

 

HIGHER EDUCATION

  • 1987 - 1990 : Ph.D. (Agric. Machinery), University of Montpellier, France.

  • 1985 - 1987 : M.Sc. (Agric. Machinery) E.N.S.A.M C.E.E.M.A.T, University of Montpellier, France.

  • 1978 - 1982 : B.Sc. ( Agric. ) Second Class Honors University of Ruhuna Matara, Sri Lanka.

 

PROFESSIONAL TRAINING

  • 1979.07 - 1979.08 : Two and Four Wheel tractor function, operation and maintenance at Sri Lanka-West German Farm Mechanisation Training Centre (FMTC), Anuradepura, Sri Lanka.

  • 1979.07 : Rice Processing at the Rice Processing and Development Centre (RPDC), Anuradepura, Sri Lanka.

  • 1980.01 : "Workshop Establishment and Management" at F.M.T.C. Anuradepura, Sri Lanka.

  • 1985.08 : "Assembling Testing and Repairing of Water Pumps" conducted by Ceygma Group Colombo, Sri Lanka.

  • 1986.01 - 1987.01 : Deploma (DAT -Diploma d' Agronomic Tropical, option- Machinism Agricol Tropical) on Tropical Agri. Machinery at CNEARC (Centre National D'etudes Agronomiques des Regions Chaudes).

  • 1986.10 : In service training in "Agricultural Research Management and Project Evaluation Methods" (Diagnostic du Projet et evalution) at CNEARC France .

  • 1986.05 : One week training course on "Micro and Macro Irrigation methods , Implements and structures" conducted by Irrifrance company, paulhan, Hevanlt, France.

  • 1987.05 : Two week course on "Repair and Maintenance of Diesel engine and Tractor testing equipment" at CEMAGREF (Centre d'Etudes et d'Experimentation de Machinism Agricole du Genie rural et des Eau et Forets) Paris , France.

 

RESEARCH ENGAGEMENT

  • The evaluation of land preparation methods adapted by the paddy farmers.

  • Development and evaluation of draught animal power equipment and accompanying technology for improved wet zone paddy farming.

  • Reversible 2 bottom ploughs for small and medium power tractor.

  • Production of biomass bricks.

  • Development of fruit harvesting technology.

  • Studies on the draft ability of the ruminant to increases the work efficiency through the use of improved harness and tools.

  • Development of fabrication technology of compost pellets.

  • Highland seeder for gingerly.

  • Development of swinging Lugs reversible Cage wheels for small and medium power Tractors

 

PATENTS

  • Retractable cage wheel for 4 wheel tractor. (Patent no: 13130 )

  • Retractable cage wheel for 2 wheel tractor. .(Patent no:13130 )

  • Folding type cage wheel for 4 wheel tractor. .(Patent no:13129 )

  • Folding type cage wheel for 2wheel tractor. .(Patent no:13129 )

  • Multipurpose cage wheel for 4 wheel tractor.( Patent no:13361)

  • Multipurpose cage wheel for 2 wheel tractor.( Patent no:13361)

  • PLAG Penitrometer.( Patent no:13360 )

  • Non-stop Cultivator with leaf spring safety device. (Patent no:13352)

  • Multi Row Hill Dropping Fertilizer-Seeder. (Patent no:13353)

  • Wetland sludge core sampler (Patent no:13451)

INVENTIONS

  • Low cost Liquid Limit apparatus.

  • Profile Meter for Soil profile studies.

  • Drop penitrometer for heavy soil hardness measurement.

  • Hammer type penitrometer for wet land soil hardness measurement.

  • Highland Seeder for Gingelly kurakkan, menery and Thanahal.

  • A low cost double bottom Mouldboard plough for two-wheel Tractor.

  • Multipurpose tool carrier for Animal drawn Implements.

  • Animal drawn Ground nut harvester.

  • Multipurpose cultivator for four wheel tractor. (With primary ploughing, secondary ploughing and leveling tools.

  • Manually operated nine raw reciprocating type Rice Seeder.

  • Multipurpose Manual fruit harvesters (bended tube, serrated knife and Shearing jaw type).

  • Tractor drawn bund forming machine for paddy soil.

  • Manually operated paddy broadcasting machine.

  • Manually operated paddy weeder with fertilizer distributor.

  • Box type tool/passenger carrier for four wheel tractor (baddy trailer).

 

PARTICIPATION IN INTERNATIONAL CONFERENCES AND SEMINARS

  • 1998 : "Revitalization of cinnamon industry in Sri Lanka ; Constraints and remedies" Organized by the section B of SLAAS (Sri Lanka Association for the Advancement of Science in collaboration with Faculty of Agriculture, University of Ruhuna and Department of Export Agriculture.

  • 1998 : International Workshop on Agricultural Research Management sponsored by NSF and CARF at PGIA Peradeniya, Sri Lanka.

  • 1999 : International Workshop on the design, performance and marketability of biogas systems. Organized by the Dept. of Agricultural Engineering, Faculty of Agriculture, University of Ruhuna, Sri Lanka.

  • 02.07.1999 : "Product diversification and quality improvement of export Agricultural crops" Organized by the section b of SLAAS in collaboration with Faculty of Agriculture, University of Ruhuna.

 

PROFESSIONAL MEMBERSHIP

  • Sri Lanka Association for the Advancement of Science. (SLAAS)

  • Agricultural Engineering Society of Sri Lanka (AESSL)

 

OTHER MEMBERSHIP

  • Life member, Ruhuna Agriculture Faculty ALUMNI Association.

  • Life member, Ruhuna University ALUMNI Association.

DISSERTATIONS

 

Research preliminaires a la modelisation du systeme tracteur-outil-sol. Car de la houe rotative, Ph.D. Montpellier , France (1992) .

 

Method de characterrisation in situ des sols soumis a des contraintes engendrees par Iaction doutils, M.Sc. Montpellier, France (1987) .

 

Physical and Technological Properties of Red yellow Podzolic soils in Mapalana Research Farm, B.Sc. in Agriculture, University of Ruhuna, Sri Lanka (1982).

 

JOURNALS

 

Alwis, P., Retractable Cage wheels for small and medium power tractor, VIDYA ,vol2,no2,April 2000.

 

Alwis, P., Research preliminaires a la modelisation du systeme tracteur-outil-sol. Car de la houe rotative, Bulletin Technique D'information, Ministere de Agriculture et du developpement Rural, Publication Mensuelle, 278-97 Paris, Juillet-Septembre ,7e 555-94.50, 1998.

 

Maniere, G. and Alwis P., Les constituants mineraux du sol , Nature et proprietes en relation avec le travail du sol, Bulletin Technique D'information, Ministere de Agriculture et du developpement Rural, Publication Mensuelle, 278-97 Paris, 7e 555-94.50, p155-169, 1997.

 

Maniere, G. and Alwis P., Proprietes Mecaniques du Systeme sol-air -eau, Bulletin Technique D'information, Ministere de Agriculture et du developpement Rural, Publication Mensuelle, 278-97 Paris, 7e 555-94.50, p155-169,1997.

 

Alwis, P., Methode de caracterisation in situ des sols soumis a des contraintes engendrees par I'action d'outils, Machinisme Agricole Tropical, 1991 Juillet-Septembre, p25 CEEMAT- CIRAD, France.

 

Weerasinghe K.D.N. and Alwis, P., Physical properties of Red Yellow Podzolic soils under Rubber Cinnamon and Coconut cultivation in Mapalana Research Farm, Rohana 1, 55-58 , University of Ruhuna, 1985.

 

PROCEEDINGS AND CONFERENCE PRESENTATIONS

 

Alwis, P., A semi-automatic micro relief meter for seedbed characterization, paper presented at the Symposium on Ninth annual Forestry and environment held in Dept. of Forestry and Environmental Science, University of Sri Jayewardenepura, Nugagoda, 27th - 28th February 2004.

 

Alwis, P., Aberathna K.D.H., Pemasiri L.W.S. and Palliyaguru P., Design and development of a low cost mounted type single leg subsoiler, paper presented at the Symposium on Ninth annual Forestry and environment held in Dept. of Forestry and Environmental Science, University of Sri Jayewardenepura, Nugagoda, 27th - 28th February 2004.

 

Alwis, P., Development and Evaluation of a New Cage Wheel for Power Tiller, Presented at the First Academic Sessions, held in University of Ruhuna' Matara, Sri Lanka, July 4th 2003.

 

Alwis, P., Development and Evaluation of a manual seeder for small seeds, Presented at the Symposium on 'Technologies for Environmental protection and sustainable Agriculture' held in Colombo, Sri Lanka, 19th - 21st November, 2003.

 

Alwis, P., Design and Development of a Low cost reversible Mouldboard plough for Power Tiller, Presented at the Symposium on 'Technologies for Environmental protection and sustainable Agriculture' held in Colombo, Sri Lanka, 19th - 21st November , 2003.

 

Alwis, P., Pushpitha N.P.G. and Ruwansiri I.K., Design and development of a manually operated low cost seeder for small seeds. Presented at the 59th annual sessions of Sri Lanka Association for the Advancement of Science, Nov/Dec. 2003.

 

Alwis, P., Pushpitha N.P.G. and Rathnayaka J.C., Design and development of a low cost double bottom mouldboard plough for power tiller, Presented at the 59th annual sessions of Sri Lanka Association for the Advancement of Science, Nov/Dec. 2003.

 

Alwis, P., A multipurpose cage wheel with floating lugs for four wheel tractors. Presented at the 58th annual sessions of Sri Lanka Association for the Advancement of Science, Nov/Dec. 2002.

 

Alwis, P., A new mud wheel with retractable lugs for power tiller. Presented at the 57th annual sessions of Sri Lanka Association for the Advancement of Science, Nov/Dec. 2001.

 

Alwis, P., Development and Testing of a Cage wheel with retractable lugs for four wheel tractor, Presented at the 56th annual sessions of Sri Lanka Association for the Advancement of Science, Nov/Dec. 2000.

 

Alwis, P., Development and testing of folding type Cage wheel for four wheel tractor, Presented at the 55th annual sessions of Sri Lanka Association for the Advancement of Science, Nov 1999.

 

Alwis, P., Development of swinging Lugs reversible Cage wheels for two wheel tractor (28 November 1997) Proceeding of the progress review seminar , National Science Foundation (NARESA), Colombo , Sri Lanka.

 

Alwis, P., New cage wheels for wet land conditions (1998.02.04 - 1998.02. 12) Abstracts of the two posters submitted to the , National Day festival- Goldan Jubilee Exhibition in B.M.I.C.H. Colombo- Exhibits for National Science Foundation (NARESA) stall, Theme: Science and Technology for development.

 

Alwis, P. and Weerasinghe K.D.N., Comparative study at Mapalana Soils in relation to there Physical properties, Presented at the 38th annual session of Sri Lanka Association for the Advancement of Science, Nov 1986.

 

BOOKS

 

Mahangu Upandina Thagga (Great Birthday Gift) - Sinhala.

 

Lowa Nipadawu Mulma Yanthraya (Firth Machine in the World) - Sinhala.

 

Bim Sekaseeme Thaakshanaya (Soil Preparation Technology) - Sinhala.

 

Stamp News.

 

Farm Machinery Designing, Agricultural Engineering