Assessing Pathogen Presence in an Intensively Tile Drained, Agricultural Watershed
نویسندگان
چکیده
منابع مشابه
Stream transport of herbicides and metabolites in a tile-drained, agricultural watershed.
The occurrence of metabolites of many commonly used herbicides in streams has not been studied extensively in tile-drained watersheds. We collected water samples throughout the Upper Embarras River watershed [92% corn, Zea mays L., and soybean, Glycine max (L.) Merr.] in east-central Illinois from March 1999 through September 2000 to study the occurrence of atrazine (2-chloro-4-ethylamino-6-iso...
متن کاملNitrogen mass balance of a tile-drained agricultural watershed in East-Central Illinois.
Simple nitrogen (N) input/output balance calculations in agricultural systems are used to evaluate performance of nutrient management; however, they generally rely on extensive assumptions that do not consider leaching, denitrification, or annual depletion of soil N. We constructed a relatively complete N mass balance for the Big Ditch watershed, an extensively tile-drained agricultural watersh...
متن کاملKinetics and Modeling of Dissolved Phosphorus Export from a Tile-Drained Agricultural Watershed
Agricultural runoff can be a source of P, a limiting factor for freshwater eutrophication. To develop a simple method to estimate P export from the cropland, we studied 1.2-p.m filtered dissolved phosphorus (DP) output from four tiles draining areas ranging from 8 to 25 ha, and from a river draining a 48 173 ha watershed in eastcentral Illinois during 1993 to 1996. The land was under maize (Zea...
متن کاملPhosphorus transport pathways to streams in tile-drained agricultural watersheds.
Agriculture is a major nonpoint source of phosphorus (P) in the Midwest, but how surface runoff and tile drainage interact to affect temporal concentrations and fluxes of both dissolved and particulate P remains unclear. Our objective was to determine the dominant form of P in streams (dissolved or particulate) and identify the mode of transport of this P from fields to streams in tile-drained ...
متن کاملChloride Sources and Losses in Two Tile-Drained Agricultural Watersheds.
Chloride is a relatively unreactive plant nutrient that has long been used as a biogeochemical tracer but also can be a pollutant causing aquatic biology impacts when concentrations are high, typically from rock salt applications used for deicing roads. Chloride inputs to watersheds are most often from atmospheric deposition, road salt, or agricultural fertilizer, although studies on agricultur...
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ژورنال
عنوان ژورنال: Journal of Environmental Quality
سال: 2018
ISSN: 0047-2425,1537-2537
DOI: 10.2134/jeq2017.12.0500