Effects of different fertilizers on soil-borne DDTs dynamics and its impacts on DDTs uptake by Ipomoea Aquatica

Li, Huashou and Ling, Weifeng and Lin, Chuxia (2010) Effects of different fertilizers on soil-borne DDTs dynamics and its impacts on DDTs uptake by Ipomoea Aquatica. In: WCSS 2010: Soil Solutions for a Changing World, 1-6 Aug 2010, Brisbane, Australia.

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A pot experiment was conducted to examine the effects of various fertilizers on the dynamics of soil-borne DDTs and their subsequent impacts on DDTs uptake by a test plant. The results show that there was a significantly lower soil residual DDTs concentration in the iron-rich fertilizer-treated soil than in other fertilizer-treated soils. However, all the non-iron-rich fertilizers showed no significant effect on the reduction of soil DDTs on the last day of the experiment, as compared to the control. There was a close relationship between the soil residual DDTs and plant tissue DDTs. This suggests that the uptake rate of DDTs by the plant was dependent on the concentration of soil-borne DDTs. Application of iron-rich fertilizer enhanced the degradation of the soil DDTs and subsequently reduced the uptake of DDTs by the test plant. The findings obtained from this study have implications for remediation of DDTs-polluted soils

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Item Type: Conference or Workshop Item (Commonwealth Reporting Category E) (Paper)
Refereed: Yes
Item Status: Live Archive
Additional Information: Authors retain copyright. Published on DVD.
Faculty / Department / School: Historic - Faculty of Sciences - No Department
Date Deposited: 22 Mar 2011 02:12
Last Modified: 03 Jul 2013 00:34
Uncontrolled Keywords: fertilizer; DDT; pesticide; soil contamination; plant uptake
Fields of Research : 05 Environmental Sciences > 0503 Soil Sciences > 050304 Soil Chemistry (excl. Carbon Sequestration Science)
07 Agricultural and Veterinary Sciences > 0703 Crop and Pasture Production > 070308 Crop and Pasture Protection (Pests, Diseases and Weeds)
07 Agricultural and Veterinary Sciences > 0799 Other Agricultural and Veterinary Sciences > 079902 Fertilisers and Agrochemicals (incl. Application)
Socio-Economic Objective: E Expanding Knowledge > 97 Expanding Knowledge > 970107 Expanding Knowledge in the Agricultural and Veterinary Sciences
URI: http://eprints.usq.edu.au/id/eprint/18719

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