rrdi_technology_soilscience_MapBasedSoilReclamation

TECHNOLOGIES

Soil Science Division - Map based soil reclamation in rice cultivation

Soil pH level	Lime requirement		Soil Organic matter level	Organic manure (OM) requirement		Soil EC Level (1:5 Soil: water)	Recommended measures
<4.5	1250 kg/ha		<1%	Apply OM @ 10t/ha		< 0.15 dS/m	No need to apply salinity package
4.5 – 7.5	No lime		1-3 %	Apply OM @ 5 t/ha		0.15 – 0.4 dS/m	Use salinity tolerant rice variety
>7.5	Check for alkalinity		>3%	No need to apply OM		>0.4 dS/m	Use salinity package

Select the .kml file on soil pH, EC and OM maps for Kurunegala or Polonnaruwa or Anuradhapura districts

Select the required paddy field by opening it in Google Earth Pro

Click on the place and get the soil pH, EC and OM levels and suitable remedial measures as seen in the table

Benifits

Better management of soil pH, EC and Organic matter to increase

Principal inventor

M.U.K. Rathnayaka, Assistant Director of Agriculture (Research), Rice Research and Development Institute, Bathalagoda

Co-inventors

N. Sirisena, Senior Soil Scientist, Rice Research and Development Institute, Bathalagoda
A. Renuka, Assistant Director of Agriculture (Research), Field Crops Research and Development Institute, Mahailluppallama

Collaborators

M.N. Wanninayake (AI), Rice Research and Development Institute, Bathalagoda
De Silva (RA), Rice Research and Development Institute, Bathalagoda
M. Muthukumara (RA), Rice Research and Development Institute, Bathalagoda
M. Piumika (TA), Rice Research and Development Institute, Bathalagoda
M.R.S. Atapattu (SRA), Rice Research and Development Institute, Bathalagoda