TY  - GEN
AU  - Zakeeya S. M. S.
TI  - Spatial variation of some soil fertility parameters in rice (oryza sativa) grown soils of karapola irrgation scheme
U1  - AT143 
PY  - 2008///
KW  - GPS
KW  - SPATIAL VARIABILITY
KW  - SOIL FERTILITY
KW  - RICE
KW  - GISMAPS
ER  -