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

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  • Sub-type Journal article
    Author Singh, Deepak
    Patel, Neelam
    Patra, Sridhar
    Singh, Nisha
    Roy, Trisha
    Caucci, Serena
    Hettiarachchi, Hiroshan
    Title 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.
    Copyright 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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    Created: Sat, 30 Sep 2023, 05:08:02 JST by Věra Greschner Farkavcová on behalf of UNU FLORES