into the food chain can be controlled by selecting crops
with low Se absorbing capacity and application of gypsum
(Bawa et al., 1992; Dhillon and Dhillon, 2000); but these
measures do not allow simultaneous reduction in the
amount of soil Se. Regular cultivation of Se accumulating
plants has been suggested (Ban˜uelos, 2001) for lowering Se
levels in the contaminated soil. It is economically more feasible
than physically removing contaminated soil or taking
seleniferous soils out of crop production. While evaluating
the efficacy of phytoremediation technology by growing
mustard in rotation with arhar/cotton/sunn hemp under
field conditions, it was possible to remove 0.5–2.1 kg Se
ha1 yr1 compared to 0.3 to 1.0 kg Se ha1 yr1 by rice–
wheat rotation (Dhillon 2004, unpublished data) depending
upon the level of Se in the soil. Pla