PHYTOREMEDIATION OF BORON CONTAMINATED SOILS BY NATURALLY GROWN WEEDS

Although maximum accumulation of boron was found in Water cress but it is not abundant in the rice field; while Joina, Barnyard grass and Chisra are frequently grown. Considering the absorption pattern, biomass and toxicity tolerance Joina and Barnyard grass are the best performer and can be considered as the mitigation of boron contaminated soil due to irrigation water. Water cress and Malancha can be used for remediation of stagnant boron contaminated water as a means of phytoremediation technology. Key words: Phytoremediation, Boron Contamination, stacking and aromatic rice INTRODUCTION Now a day Phytoremediation is an emerging technology. It is a quite novel technique of cleaning polluted sites through the use of plants. Phytoremediation methods are comparatively cheap and ecologically advantageous, compared to common technological approaches. Now, the world is sailing its voyage towards to the green technology. Green plants are being used to remove pollutants from the environment or to render them harmless. There are several species of plants known for their phytoremediative abilities. Two Brassica species Brassica juncea and Brassica carinata are experimentally screened for the remediation of nickel contaminated soil. Between these two species, Brassica juncea has the potential to be hyper accumulator of Ni (Panwar et al., 2002)