The Phytoattenuation of the Soil Metal Contamination: The Effects of Plant Growth Regulators (GA3 and IAA) by Employing Wetland Macrophyte Vetiver and Energy Plant Sunflower

K F Chen,T Y Yeh,Y.H Hsu

doi:10.4172/2161-0525.1000125

Abstract

The phytoattenuation, a novel green remediation concept, has been successfully demonstrated while employing vetiver and biostimulator (gibberellic acid GA3 and indol-3-acetic acid IAA) to gradually mitigate the soil [1] Cu levels. The effectiveness of stimulator GA3 and IAA was in the descending sequence GA3 > IAA. Biostimulator has been demonstrated plant growth enhancement and been employed for agricultural operation. The on-site tests demonstrated Cu levels were gradually decreasing during 4 months monitoring time periods. The soil metal level reduction achieved a satisfactory level which complied with local environmental standards. After more rounds of planting and harvesting, the soil metal concentration expected to be further dropped while on-site operation was executed. Green remediation concepts such as the phytoattenuation need to be taken as serious concern while the Earth has faced recent unpresdent damage Japan tsunami, Green house effect, unpredicted weather fluctuation worldwide, and serious endangered species issues.

Highlights

The soil and groundwater remediation act has been enacted and executed since year 2000
GA3 generally possessed better propagation upgrade than indol-3-acetic acid (IAA). Both biostimulator could employ for the vetiver growth increase which is the merit for further plant uptake
Biostimulators commonly employed in agricultural amendment to enhance produce propagations (Table 2)

Summary

Introduction

The soil and groundwater remediation act has been enacted and executed since year 2000. It has been ten good years till today where lots of remediation techniques progressively employed to improve Taiwan the soil and groundwater resource quality. Some of technologies were unenvironmental friendly even detrimental and damage to Taiwan precious the soil and groundwater resources. In Article one of the current Taiwan the soil and groundwater Act, it clearly stated which the soil is a precious nature resources. The soil definitely is not a waste, shame on us most of current most commonly employed remediation are unlawful and merely aiming to save time and money consideration without any care to our land.

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Conclusion