TY  - GEN
AU  - velrajah S.
TI  - Satial variability of soil fertility  characteristics at the kalinga ela in sewagama agrarian service center in the parakrama samudra irrigation scheme in polonnaruwa
U1  - AT044 
PY  - 2008///
KW  - GIS
KW  - SALINITY
KW  - THEMATICMAPS
KW  - SPATIAL VARIABILITY
KW  - SOIL FERTILITY PARAMETERS
KW  - RICE
KW  - GPS
ER  -