Comparative evaluation of irrigation waters on microbiological safety of spinach in field

Aims Effect of ground water (GW), secondary‐treated wastewater (STWW) and roof‐harvested rainwater (RHW) irrigation on microbiological quality of spinach in field was investigated. Methods and Results Spinach grown at the Fulton farm (Chambersburg, PA) was spray‐irrigated with GW, STWW or RHW once a...

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Bibliographic Details
Published in:Journal of applied microbiology 2019-12, Vol.127 (6), p.1889-1900
Main Authors: Yin, H.‐B., Gu, G., Nou, X., Patel, J.
Format: Article
Language:English
Subjects:
Agricultural Irrigation - methods
Bacteria
Coliforms
Colony Count, Microbial
E coli
Escherichia coli - classification
Escherichia coli - isolation & purification
Feces - microbiology
Food Microbiology
food safety
Groundwater
Indicators
Irrigation
irrigation water
Populations
Rain water
Rainwater recovery systems
Spinach
Spinacia oleracea - microbiology
Wastewater
Wastewater treatment
Water Microbiology
water quality
water source
Water Supply - methods
Water treatment
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Summary:Aims Effect of ground water (GW), secondary‐treated wastewater (STWW) and roof‐harvested rainwater (RHW) irrigation on microbiological quality of spinach in field was investigated. Methods and Results Spinach grown at the Fulton farm (Chambersburg, PA) was spray‐irrigated with GW, STWW or RHW once a week for 2 weeks in summer and fall seasons. Four replicate spinach and soil samples collected from two plots for each group were analysed for indicator and pathogenic bacteria on 0, 1, 2 and 4 days postirrigation (dpi). While total coliforms remained unchanged on spinach regardless of the treatment waters and growing seasons, populations of faecal coliform significantly decreased on RHW‐ and STWW‐irrigated spinach as compared to spinach irrigated with GW at 4 dpi of each week in fall. Irrigation with STWW that contained Escherichia coli population
ISSN:1364-5072
1365-2672
DOI:10.1111/jam.14436