RRDI_Div_WaterManagement

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RRDI Divisions

Water Management & GIS Division

Studies on rice water management have been initiated at the Agricultural Research Station at Maha Illuppallama in 1966 and carried out until 1994.  After re-structuring of the DOA and establishment of specific research stations in 1994, rice research became the sole responsibility of the RRDI.  However, after establishment of the RRDI, there was no much emphasis given on water management research.  Research on rice water management at RRDI has been initiated by Dr. WMW Weerakoon in 2004 under the Division of Agronomy and then the Division of Water Management and GIS was established in 2006 and started research by Ms. WMUK Rathnayake. 

Water plays an important role in many of the practices in rice cultivation such as weed management, fertilizer application, and pest and diseases control etc. Water is significant in determining quality and yield of rice grain, influences the environmental quality creating conditions such as salinity, alkalinity, iron toxicity etc. and affects the growth of rice plant differently at different phonological stages of the crop. Therefore, water management is crucial in rice cultivation. 

Geo-informatics including GIS (Geographic Information System) can be used in agricultural resource management, rice crop identification, area estimation, assessment of land suitability, identification of cultivation calendar, assessment of inputs and inventory resources, for water use and water availability mapping, water management in rice farming, for efficient use of fertilizer, assessment of crop damage and identification of control measures, forecasting yield and marketing. Therefore, GIS is used as a tool for above in rice cultivation.

Services

  • Identify suitable method and technologies to minimize the impact of climate change on rice cultivation
  • Develop new techniques to increase the water use efficiency on rice
  • Mapping of soil fertility and soil related problems
  • Involvement of water management in rice production training programs for extension officers, farmers, students (university, agricultural schools and schools), other interested groups and TV and radio programs, field visits etc.

Technologies

  • Alternate Wetting and Drying (AWD) technology in water management in rice cultivation
  • Soil map based fertilizer recommendation for rice grown in Anuradhapura, Polonnaruwa and Kurunegala districts (2018)
  • Soil map based soil reclamation for soil pH, salinity and organic matter for Anuradhapura, Polonnaruwa and Kurunegala districts in rice cultivation (2018)

Research & Publications

Variation of soil properties of lowland rainfed and irrigated paddy farming in low country intermediate zone…

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Services

  • Identify suitable method and technologies to minimize the impact of climate change on rice cultivation
  • Develop new techniques to increase the water use efficiency on rice
  • Mapping of soil fertility and soil related problems
  • Involvement of water management in rice production training programs for extension officers, farmers, students (university, agricultural schools and schools), other interested groups and TV and radio programs, field visits etc.

Technologies

  • Alternate Wetting and Drying (AWD) technology in water management in rice cultivation
  • Soil map based fertilizer recommendation for rice grown in Anuradhapura, Polonnaruwa and Kurunegala districts (2018)
  • Soil map based soil reclamation for soil pH, salinity and organic matter for Anuradhapura, Polonnaruwa and Kurunegala districts in rice cultivation (2018)

Research & Publications

Variation of soil properties of lowland rainfed and irrigated paddy farming in low country intermediate zone…

Read More >>

Agronomy Division - Staff

Dr(Ms). W.M.U.K.Rathnayake
Principal Agricultural Scientist