Phytoremediation of soil contaminated with imazapic

The tolerance of Canavalia ensiformis, Mucuna
pruriens and Urochloa brizantha to
imazapic is recognized. Since imazapic has a long residual effect in the soil,
this work was conducted to investigate the capacity of plant species to decontaminate
soils contaminated with imazapic. Four doses of imazapic (0, 87.5, 175 and 350
g ha-1) were applied to soil samples, which were later cultivated
with C. ensiformis, M. pruriens and U. brizantha. The phytotoxicity, height and dry mass of the tested
plants were evaluated. Samples of plant tissue and soil were collected for
chemical analysis of the residue. Sorghum
bicolor was also used to estimate the residual effect of imazapic by
bioassay.