Bright, Kelly R.
Reynolds, Kelly A.
Verhougstraete, Marc P.
AffiliationUniv Arizona, Mel & Enid Zuckerman Coll Publ Hlth
KeywordsFood crop safety
Irrigation water quality
MetadataShow full item record
PublisherELSEVIER SCIENCE BV
CitationLothrop, N., Bright, K. R., Sexton, J., Pearce-Walker, J., Reynolds, K. A., & Verhougstraete, M. P. (2018). Optimal strategies for monitoring irrigation water quality. Agricultural Water Management, 199, 86-92, https://doi.org/10.1016/j.agwat.2017.12.018
JournalAGRICULTURAL WATER MANAGEMENT
Rights© 2017 Elsevier B.V. All rights reserved.
Collection InformationThis item from the UA Faculty Publications collection is made available by the University of Arizona with support from the University of Arizona Libraries. If you have questions, please contact us at firstname.lastname@example.org.
AbstractThe quality of irrigation water drawn from surface water sources varies greatly. This is particularly true for waters that are subject to intermittent contamination events such as runoff from rainfall or direct entry of livestock upstream of use. Such pollution in irrigation systems increases the risk of food crop contamination and require adoption of best monitoring practices. Therefore, this study aimed to define optimal strategies for monitoring irrigation water quality. Following the analysis of 1357 irrigation water samples for Escherichia coil, total coliforms, and physical and chemical parameters, the following key irrigation water collection approaches are suggested: 1) explore up to 950m upstream to ensure no major contamination or outfalls exists; 2) collect samples before 12:00 p.m. local time; 3) collect samples at the surface of the water at any point across the canal where safe access is available; and 4) composite five samples and perform a single E. coil assay. These recommendations comprehensively consider the results as well as sampling costs, personnel effort, and current scientific knowledge of water quality characterization. These strategies will help to better characterize risks from microbial pathogen contamination in irrigation waters in the Southwest United States and aid in risk reduction practices for agricultural water use in regions with similar water quality, climate, and canal construction. (C) 2017 Elsevier B.V. All rights reserved.
Note24 month embargo; published online: 27 December 2017
VersionFinal accepted manuscript
SponsorsCenter for Produce Safety [2015CPS05]; Arizona Department of Agriculture's Specialty Crop Block Grant Program [SCBGP-FB14-01]