Effects of Soil, Cover Crop, and Nutrient Source on Amounts and Forms of Phosphorus Movement Under Simulated Rainfall Conditions

Reddy, G. Y.; Lean, E. O. Mc; Hoyt, Greg D.; Logan, Terry J.

doi:10.2134/jeq1978.00472425000700010010x

Cited by 22 publications

(6 citation statements)

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“…This nutrient tends to be held in the soil and little is transported to groundwaters (Reddy et al ., 1978 ;Conesa et al, 1979) . However, higher phosphate content in groundwater than in surface water has been reported for a desert stream in Arizona (Valett et al, 1990), and a Northern Michigan river (Hendricks & White, 1991) .…”

Section: Comparison Between Gravel Bar and Alluvial Plain Groundwatermentioning

confidence: 99%

Comparison of solutes, nutrients, and bacteria inputs from two types of groundwater to the Rh�ne river during an artificial drought

et al. 1996

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Solute, nutrient and bacterial inputs to the River Rhone from the interstitial habitat of a gravel bar and the floodplain aquifer were investigated during an artificial drought . Eight springs were investigated : four groundwater-fed springs in the floodplain, located at the bottom of the bank ; and four interstitial-fed springs located at the downstream end of a gravel bar. During this period, the inflows of groundwater to the river represented an average input of 0 .77 mg 1-1 of nitrogen (of which 93 .3% were nitrates), 0 .0187 mg 1-1 of total phosphorus (of which 42 .2% was orthophosphate), 3 .56 mg 1 -' of silica, 2 .315 ± 0 .703 mg 1 -1 of dissolved organic carbon (DOC, of which 47% was biodegradable) and 7 .3 x 104 ± 3 .7 x 10 4 bacteria per ml (of which 8 .8% were active) . Silica, DOC, biodegradable DOC, and bacteria concentrations displayed temporal variations during the study, which seem to be linked to the biological activity of the groundwater biofilm. There was a strong heterogeneity between the two types of groundwater that flow to the river : concentrations of calcium and alkalinity were higher in bank springs than in gravel bars springs . In these latters, sulfate, sodium, nitrogen, phosphorus were significantly higher .

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Section: Comparison Between Gravel Bar and Alluvial Plain Groundwatermentioning

confidence: 99%

Comparison of solutes, nutrients, and bacteria inputs from two types of groundwater to the Rh�ne river during an artificial drought

et al. 1996

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“…The 3-years mean PP losses were lower by 69, 58, and 89% from wheat/corn, wheat/cotton, and wheat/soybean, respectively, when compared with wheat/fallow. Reddy et al (1978) also found that their cropped plot decreased PP losses compared with the bare plot. The temporal distribution of PP losses varied across the four treatments (Fig.…”

Section: P Concentrations In Surface Runoffmentioning

confidence: 82%

Phosphorus loss by surface runoff from agricultural field plots with different cropping systems

Jiao

Wang

et al. 2010

Nutr Cycl Agroecosyst

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Phosphorus (P) loss from agricultural fields through surface runoff may contribute to the eutrophication of surface waters. The objective of this study was to evaluate surface runoff and P transport from different cropping systems during 2007-2009. The treatments consisted of a control (wheat/fallow) and three double cropping systems: wheat/corn (Zea mays L.), wheat/cotton (Gossypium hirsutum L.), and wheat/soybean [Glycine max (L.) Merr.]. Wheat/ fallow was not fertilized and had no crop planted during the summer crop growing season. The four treatments were randomly assigned to 12 plots of 5 9 2 m on a silt clay soil. Surface runoff from natural rainfall was sampled for P analysis during the 3 years. Double cropping systems, when compared with wheat/ fallow, reduced runoff volume and losses of total dissolved P (TDP), particular P (PP), and total P (TP). Wheat/soybean was the most beneficial system reducing the 3-years mean runoff volume by 58%, TDP loss by 81%, PP loss by 89%, and TP loss by 85%, compared with wheat/fallow. The 3-years flowweighted mean (FWM) concentrations of TDP, PP, and TP followed the order wheat/fallow [ wheat/ cotton [ wheat/corn [ wheat/soybean. The least temporal variations of the P concentrations and losses were observed from wheat/soybean. Therefore, selecting wheat/soybean as the main double cropping system appears to be a practical method for controlling runoff and associated P loss from farmland under similar weather and soil conditions.

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“…There was also marked similarity between the mean summer EPC of suspended particles in the runoff and the mean, flow-weighted concentration of SRP of the runoff, suggesting equilibrium control of SRP. Reddy et al (1978) also found that manure amendments increased the EPC of soils tremendously.…”

Section: Eight-mile Runmentioning

confidence: 85%

Phosphorus Loading and Compositional Characteristics in Eight-Mile Run Watershed, Wisconsin

James¹,

Eakin²,

Barko³

2004

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The purpose of this research was to describe and quantify biologically labile and refractory phosphorus runoff in Eight-Mile Run, a small watershed in west-central Wisconsin that is impacted by dairy livestock management. BACKGROUND: There is a need to manage eutrophication problems in Corps of Engineers receiving waters by reducing losses of soils and associated soluble nutrients (primarily phosphorus) in intensively managed agricultural land-use settings that are hydrologically sensitive to runoff. In many agricultural watersheds, livestock is contained in relatively small areas for long periods of time, leading to overgrazing and loss of perennial cover, disruption of the soil surface, and the buildup of nutrients in the soil via manure incorporation that can become a source to receiving waters during runoff events. Bank erosion and decimation of adjacent buffer strips by livestock that is allowed to forage along tributaries can further exacerbate soil and nutrient erosion and runoff. To forecast the impacts of watershed rehabilitation and Best Management Practices (BMPs) on hydraulic and nutrient loadings, models need to be refined to address the impacts of various land-use practices such as livestock production and management on concentrations and loads of sediment and important nutrients like nitrogen and phosphorus in rivers and streams draining watersheds.

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Effects of Soil, Cover Crop, and Nutrient Source on Amounts and Forms of Phosphorus Movement Under Simulated Rainfall Conditions

Cited by 22 publications

References 0 publications

Comparison of solutes, nutrients, and bacteria inputs from two types of groundwater to the Rh�ne river during an artificial drought

Comparison of solutes, nutrients, and bacteria inputs from two types of groundwater to the Rh�ne river during an artificial drought

Phosphorus loss by surface runoff from agricultural field plots with different cropping systems

Phosphorus Loading and Compositional Characteristics in Eight-Mile Run Watershed, Wisconsin

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