Rice crop variety, Swarna was
C.B. Pandey, D.K. Sharma / Agriculture, Ecosystems and Environment 96 (2003) 133–139 135
transplanted in all the fields in July 1999 with row
to row distance of 20 cm and plant to plant distance,
within a row, 10 cm. Crop management practices
were same in all the fields. Five line transects, each
at 72◦ from the tree stump, were laid randomly.