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פותח על ידי קלירמאש פתרונות בע"מ -
The fate of pathogens in treated wastewater-soil-crops continuum and the effect of physical barriers
Year:
2019
Source of publication :
Science of the Total Environment
Authors :
אדלשטיין, מנחם
;
.
בן-חור, מני
;
.
ברנשטיין, נירית
;
.
Volume :
681
Co-Authors:

Obayomi, O., Zuckerberg Institute for Water Research, J. Blaustein Institutes for Desert Research, Ben Gurion University of the Negev, Midreshet Ben Gurion, 84990, Israel; Ghazaryan, L., Zuckerberg Institute for Water Research, J. Blaustein Institutes for Desert Research, Ben Gurion University of the Negev, Midreshet Ben Gurion, 84990, Israel; , Israel; Vonshak, A., Zuckerberg Institute for Water Research, J. Blaustein Institutes for Desert Research, Ben Gurion University of the Negev, Midreshet Ben Gurion, 84990, Israel; Safi, J., Environmental Protection and Research Institute-Gaza, POBox 1175, Gaza, Palestine;  Gillor, O., Zuckerberg Institute for Water Research, J. Blaustein Institutes for Desert Research, Ben Gurion University of the Negev, Midreshet Ben Gurion, 84990, Israel

Facilitators :
From page:
339
To page:
349
(
Total pages:
11
)
Abstract:

Secondary treated wastewater (TWW) could provide a cheap and sustainable alternative to potable water (PW) irrigation and ensure food security, especially in arid and semi-arid regions. However, TWW may pose a health risk by introducing pathogens to the irrigated soil and crop, and especially to irrigated vegetables that are eaten raw. To avoid contamination, national and international authorities have mandated the use of physical barriers, such as drip irrigation and plastic mulch, to separate the irrigation water and the crops. Although the barriers are mandated, it is not clear whether they prevent contamination of crops. To evaluate the role of barriers on crop safety, cucumbers and melons were cultivated in a field irrigated with TWW or PW with the application of barriers including surface and subsurface drip irrigation and plastic mulch. Over 500 samples of water, soil and the model crops (surface and tissue) were collected during two growing seasons and used to monitor fecal indicator bacteria and pathogens using culture dependent and independent methods. The results showed that there were no statistically significant differences in both the fecal indicator and the pathogen abundance between treatments in either the soil or the crops, regardless of the water quality or barrier applied, even though TWW supported higher diversity and abundance of indicators and pathogens than PW. Moreover, the microbial communities detected in the irrigated soils and crops could not be linked to the irrigation water. The obtained results suggest that irrigation with TWW does not result in fecal pathogen contamination of the irrigated soil or crops. © 2019

Note:
Related Files :
crop
Cucumis sativus
food supply
soil moisture
soil pollution
subsurface drip irrigation
wastewater treatment
עוד תגיות
תוכן קשור
More details
DOI :
10.1016/j.scitotenv.2019.04.378
Article number:
0
Affiliations:
Database:
סקופוס
Publication Type:
מאמר
;
.
Language:
אנגלית
Editors' remarks:
ID:
41036
Last updated date:
02/03/2022 17:27
Creation date:
28/05/2019 10:43
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Scientific Publication
The fate of pathogens in treated wastewater-soil-crops continuum and the effect of physical barriers
681

Obayomi, O., Zuckerberg Institute for Water Research, J. Blaustein Institutes for Desert Research, Ben Gurion University of the Negev, Midreshet Ben Gurion, 84990, Israel; Ghazaryan, L., Zuckerberg Institute for Water Research, J. Blaustein Institutes for Desert Research, Ben Gurion University of the Negev, Midreshet Ben Gurion, 84990, Israel; , Israel; Vonshak, A., Zuckerberg Institute for Water Research, J. Blaustein Institutes for Desert Research, Ben Gurion University of the Negev, Midreshet Ben Gurion, 84990, Israel; Safi, J., Environmental Protection and Research Institute-Gaza, POBox 1175, Gaza, Palestine;  Gillor, O., Zuckerberg Institute for Water Research, J. Blaustein Institutes for Desert Research, Ben Gurion University of the Negev, Midreshet Ben Gurion, 84990, Israel

The fate of pathogens in treated wastewater-soil-crops continuum and the effect of physical barriers

Secondary treated wastewater (TWW) could provide a cheap and sustainable alternative to potable water (PW) irrigation and ensure food security, especially in arid and semi-arid regions. However, TWW may pose a health risk by introducing pathogens to the irrigated soil and crop, and especially to irrigated vegetables that are eaten raw. To avoid contamination, national and international authorities have mandated the use of physical barriers, such as drip irrigation and plastic mulch, to separate the irrigation water and the crops. Although the barriers are mandated, it is not clear whether they prevent contamination of crops. To evaluate the role of barriers on crop safety, cucumbers and melons were cultivated in a field irrigated with TWW or PW with the application of barriers including surface and subsurface drip irrigation and plastic mulch. Over 500 samples of water, soil and the model crops (surface and tissue) were collected during two growing seasons and used to monitor fecal indicator bacteria and pathogens using culture dependent and independent methods. The results showed that there were no statistically significant differences in both the fecal indicator and the pathogen abundance between treatments in either the soil or the crops, regardless of the water quality or barrier applied, even though TWW supported higher diversity and abundance of indicators and pathogens than PW. Moreover, the microbial communities detected in the irrigated soils and crops could not be linked to the irrigation water. The obtained results suggest that irrigation with TWW does not result in fecal pathogen contamination of the irrigated soil or crops. © 2019

Scientific Publication
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