Tracing phosphorous transferred from grazing land to water

Nash, David

doi:10.1016/s0043-1354(99)00359-0

Cited by 30 publications

(13 citation statements)

References 61 publications

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“…On the other hand, even though there was less leaching loss from the sand soil in this experiment, that is not to say that growing catch crops on sand soil is the solution. With time, the large inputs of P from plant material combined with the lower outputs could cause a gradual P accumulation within any soil, which could increase the eventual chance of P release to the soil water (Sharpley and Rekolainen, 1997;Nash and Halliwell, 2000).…”

Section: Plant Clay Soil + Plant Sand Soil + Plantmentioning

confidence: 99%

Phosphorus Leaching from Two Soils with Catch Crops Exposed to Freeze–Thaw Cycles

Riddle

Bergström²

2013

Agronomy Journal

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Catch crops have been found to decrease leaching of nitrates into surface water and groundwater, but they also have the potential to increase P loadings to natural waters due to plant destruction during freezing-thawing events. An indoor lysimeter experiment was performed using a clay and a sand soil with four different plant species applied: perennial ryegrass (Lolium perenne L.), honey herb (Phacelia tanacetifolia Benth.), chicory (Cichorium intybus L.), and oilseed radish (Raphanus sativus L.). These plants were exposed to simulated rainfall and freezing events in two separate experiments, one using topsoil columns with plant material added and one with plant material only. The sand and clay soils had significantly different control total-P leaching loads after all freezing events, with a mean of 0.32 kg ha -1 for the clay and 0.88 kg ha -1 (P < 0.001) for the sand. The combined (soil including plant material) total-P leaching loads from the clay soil were in the order: chicory (2.6 kg ha -1 ) > ryegrass (2.3 kg ha -1 ) > oilseed radish (2.2 kg ha -1 ) > honey herb (1.3 kg ha -1 ), with considerably smaller loads from the sand. Phosphorus losses were greater from the plant-only experiment, with chicory (51.7 kg ha -1 ) > oilseed radish (43.2 kg ha -1 ) > honey herb (18.4 kg ha -1 ) > ryegrass (10 kg ha -1 ). The results indicate that soil texture and plant choice can have a large impact on P leaching loads entering natural waters in cold regions and that soils act as an efficient filter for P released from catch crop residues.

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Section: Plant Clay Soil + Plant Sand Soil + Plantmentioning

confidence: 99%

Phosphorus Leaching from Two Soils with Catch Crops Exposed to Freeze–Thaw Cycles

Riddle

Bergström²

2013

Agronomy Journal

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“…Likewise, in agricultural areas, rainfall-driven runoff of phosphorus into streams is problematic (Edwards and Daniel 1992) and occurs both from the erosion of particulate phosphorus and surface or subsurface movement of dissolved phosphorus (Sims et al 1998;Nash and Halliwell 2000). Rural sources of nitrogen subject to surface runoff are chemical fertilizers, manure fertilizers, swine and poultry waste disposal, and settling of ammonia generated by swine and poultry lagoons and sprayfields (Edwards and Daniel 1994;Sims and Wolf 1994;Gangbazo et al 1995;Burkholder et al 2007).…”

Section: Introductionmentioning

confidence: 99%

Comparative impacts of stormwater runoff on water quality of an urban, a suburban, and a rural stream

Mallin

Johnson

Ensign

2008

Environ Monit Assess

207

121

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Water quality data at 12 sites within an urban, a suburban, and a rural stream were collected contemporaneously during four wet and eight dry periods. The urban stream yielded the highest biochemical oxygen demand (BOD), orthophosphate, total suspended sediment (TSS), and surfactant concentrations, while the most rural stream yielded the highest total organic carbon concentrations. Percent watershed development and percent impervious surface coverage were strongly correlated with BOD (biochemical oxygen demand), orthophosphate, and surfactant concentrations but negatively with total organic carbon. Excessive fecal coliform abundance most frequently occurred in the most urbanized catchments. Fecal coliform bacteria, TSS, turbidity, orthophosphate, total phosphorus, and BOD were significantly higher during rain events compared to nonrain periods. Total rainfall preceding sampling was positively correlated with turbidity, TSS, BOD, total phosphorus, and fecal coliform bacteria concentrations. Turbidity and TSS were positively correlated with phosphorus, fecal coliform bacteria, BOD, and chlorophyll a, which argues for better sedimentation controls under all landscape types.

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“…The use of biomarkers is common in geochemistry and marine science [33][34][35], but relatively little work has been done to authenticate a food product's origin or identify the source of pollutants in agricultural runoff [36,37].…”

Section: Biological Marker Compounds and The Re-use Of Dairy Factory mentioning

confidence: 99%

Dairy Factory Wastewaters, Their Use on Land and Possible Environmental Impacts - A Mini Review

Watkins¹,

Nash²

2010

TOASJ

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Dairy factory wastewaters are increasingly being considered a valuable resource. However, these waters may also contain contaminants, natural or artificial, that may adversely affect the land to which they are applied. This review investigates dairy wastewaters, factors affecting their composition, some probable effects on land and compounds that may be used to trace the migration of pollutants.Dairy factory wastewaters differ depending on the types of products made by the factory and the treatment afforded wastewaters. In addition to milk and milk by-products, dairy factory wastewaters contain cleaning chemicals that contribute to the salt load, and synthetic compounds.From the limited studies where the effects on dairy processing wastewaters on land have been measured, the consensus of the literature results acknowledges the utility to agriculture can be highly variable and depends on the land to which it was applied and wastewater characteristics including concentrations of phosphorus, nitrogen, carbon and sodium. Excessive applications of nutrients such as nitrogen and phosphorus have resulted in runoff to nearby watercourses.Even fewer studies have investigated the use of organic marker compounds in the dairy industry. Lipids, terpenes and sterols found in the plants consumed by livestock would be useful for identifying pollutants from the dairy industry. However, a library of biological marker compounds and their likely sources is needed before such a technology could be applied more widely.

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Tracing phosphorous transferred from grazing land to water

Cited by 30 publications

References 61 publications

Phosphorus Leaching from Two Soils with Catch Crops Exposed to Freeze–Thaw Cycles

Phosphorus Leaching from Two Soils with Catch Crops Exposed to Freeze–Thaw Cycles

Comparative impacts of stormwater runoff on water quality of an urban, a suburban, and a rural stream

Dairy Factory Wastewaters, Their Use on Land and Possible Environmental Impacts - A Mini Review

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