Efficacy of drip irrigation in controlling heavy-metal accumulation in soil and crop
Singh, Deepak, Patel, Neelam, Patra, Sridhar, Singh, Nisha, Roy, Trisha, Caucci, Serena and Hettiarachchi, Hiroshan, (2021). Efficacy of drip irrigation in controlling heavy-metal accumulation in soil and crop. Journal of Environmental Engineering and Science, 16(3), 109-121
Document type:
Article
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Sub-type Journal article Author Singh, Deepak
Patel, Neelam
Patra, Sridhar
Singh, Nisha
Roy, Trisha
Caucci, Serena
Hettiarachchi, HiroshanTitle Efficacy of drip irrigation in controlling heavy-metal accumulation in soil and crop Appearing in Journal of Environmental Engineering and Science Check publisher's open access policy Volume 16 Issue No. 3 Publication Date 2021-09-14 Place of Publication UK Publisher Thomas Telford Ltd Start page 109 End page 121 Language eng Abstract This study was aimed at identifying how drip irrigation could be useful in controlling heavy-metal issues, practically and affordably. A vegetable crop (i.e. cauliflower) was the subject of the test. Heavy-metal accumulation in soils and uptake by cauliflower curds were observed for two consecutive years. Municipal wastewater and groundwater were used for irrigation, to make it a comparative study. There were eight treatments: drip irrigation with groundwater through inline (non-pressure-compensating) surface drip (T1), inline subsurface drip (T2), bioline (pressure-compensating) subsurface drip (T3), bioline surface drip (T4) and the same drip systems using primarily treated municipal wastewater (T5 to T8). The results showed that significantly higher concentrations of heavy metals – namely, copper, iron, manganese and zinc – were recorded in cauliflower curds irrigated with wastewater compared with those irrigated with groundwater. Subsurface placement of pressure-compensating drip laterals was found more effective in reducing the heavy-metal concentrations in both cauliflower and soil profile compared with surface-placed non-pressure-compensating drip laterals. This study suggests that drip irrigation systems could be an effective method to reduce heavy-metal concentration in vegetable crops and soils irrigated with treated municipal wastewater. UNBIS Thesaurus GROUNDWATER
POLLUTION
WATER SUPPLYCopyright Holder The Authors Copyright Year 2021 Copyright type All rights reserved ISSN 1496-2551 DOI https://doi.org/10.1680/jenes.20.00056 -
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