Apatite Control Of Phosphorus Release To Runoff From Soils O
Welcome to the broken dawn

Apatite Control Of Phosphorus Release To Runoff From Soils O

Apatite Control of Phosphorus Release to Runoff from

2009-1-11  Phosphorus (P) in runoff can pose a water quality risk in phosphate mine reclamation areas. High dissolved P (DP) concentrations (about 0.4–3.0 mg L −1) in runoff from these areas and high equilibrium P concentrations for the soils led us to hypothesize that P release is controlled by dissolution of apatite rather than by desorption mechanisms.

More

Apatite Control of Phosphorus Release to Runoff from

2009-11-30  Apatite Control of Phosphorus Release to Runoff from Soils of Phosphate Mine Reclamation Areas Yi-Ming Kuo Willie G. Harris Rafael Muñoz-Carpena R. Dean Rhue Yuncong Li Received: 20 October 2008 /Accepted: 22 December 2008 / Published online: 11 January 2009

More

Apatite Control of Phosphorus Release to Runoff from

Apatite Control of Phosphorus Release to Runoff from Soils of Phosphate Mine Reclamation Areas. ... and stated that natural apatite in soils is a long-term P source instead of a sink for P. In ...

More

Apatite control of phosphorus release to runoff from soils ...

Phosphorus (P) in runoff can pose a water quality risk in phosphate mine reclamation areas. High dissolved P (DP) concentrations (about 0.4-3.0 mg L-1) in runoff from these areas and high equilibrium P concentrations for the soils led us to hypothesize that P release is controlled by dissolution of apatite rather than by desorption mechanisms.

More

Apatite control of phosphorus release to runoff from soils ...

Abstract. Abstract Phosphorus (P) in runoff can pose a water quality risk in phosphate mine reclamation areas. High dissolved P (DP) concentrations (about 0.4– 3.0 mg L−1) in runoff from these areas and high equilibrium P concentrations for the soils led us to hypothesize that P release is controlled by dissolution of apatite rather than by desorption mechanisms.

More

Apatite Control of Phosphorus Release to Runoff from

2009-1-11  Phosphorus (P) in runoff can pose a water quality risk in phosphate mine reclamation areas. High dissolved P (DP) concentrations (about 0.4–3.0 mg L−1) in runoff from these areas and high equilibrium P concentrations for the soils led us to hypothesize that P release is controlled by dissolution of apatite rather than by desorption mechanisms. Objectives were to (a) verify via chemical ...

More

VEGETATIVE FILTER STRIPS TO CONTROL SURFACE

2013-5-31  VEGETATIVE FILTER STRIPS TO REDUCE SURFACE RUNOFF PHOSPHORUS TRANSPORT FROM MINING SAND TAILINGS IN THE UPPER PEACE RIVER BASIN ... teaching soil chemistry and for his belief in me which helped develop confidence in my abilities ... 3 EVIDENCE FOR APATITE CONTROL OF PHOSPHORUS RELEASE TO RUNOFF FROM SOILS OF PHOSPHATE

More

Project Progress Report Using vegetative filter strips to ...

2010-2-1  • Phosphorus in sand tailings soils at the sites was in the form of apatite, as indicated by x-ray diffraction (XRD) and chemical fractionation. Results of this study supported the hypothesis that release of P from the soil was primarily from apatite dissolution rather than desorption from metal oxides that is more typical of soil of the region.

More

(PDF) Apatite weathering and the Phanerozoic phosphorus

If phosphorus is the ultimate controlling nutrient over geologic time scales, then long-term marine NEP is coupled to the release of phosphorus from apatite weathering.

More

Mechanisms for release of sediment-bound phosphate to ...

Agricultural practices, such as phosphate fertility management and conservation tillage, which affect the levels of phosphate and sediment leaving the land, will determine the partition of sediment-bound P and dissolved P in water draining into lakes, with implications for the availability of that phosphate

More

Kuo et al.(2009)

2009-12-1  『Abstract Phosphorus (P) in runoff can pose a water quality risk in phosphate mine reclamation areas. High dissolved P (DP) concentrations (about 0.4-3.0 mg L-1) in runoff from these areas and high equilibrium P concentrations for the soils led us to hypothesize that P release is controlled by dissolution of apatite rather than by desorption mechanisms.

More

apatite and phosphorus mining - monter-anten

2021-4-1  Apatite Control of Phosphorus Release to . 2009-1-11 Apatite Control of Phosphorus Release to Runoff from Soils of Phosphate Mine Reclamation Areas. ... reconstructed soils on reclaimed mining sites and their ... FreeChat. phosphorus apatite mining - smoothfab.co.

More

Processes controlling soil phosphorus release to runoff ...

Processes controlling soil phosphorus release to runoff and implications ... In this paper, we review the basis of soil P release into solution and transport in surface and sub-surface runoff. Our objectives are to outline the role of soil P and hydrology in P ... As it is impossible to control natural rainfall and difficult to influence soil ...

More

Release of phosphorus and silicon from minerals by soil ...

2020-4-1  Microorganisms release nutrients from minerals. However, this process is not yet well understood despite its importance for soil fertility. The aim of this study was to determine which factors control microbial phosphorus (P) and silicon (Si) release from apatite and weathered rock, and to analyze which microbial-mediated processes cause P and Si solubilization.

More

Sustainable Generation of Phosphate Based Fertilizers by ...

2021-5-12  Diammonium phosphate (DAP) fertilizer is a widely used phosphorus fertilizer applied to soils to address low levels of phosphorus as a result of intense agriculture [15]. It contains nitrogen which is important in promoting rapid vegetative growth and phosphorus which is a component of ATP and chlorophyll that is essential for food production.

More

Global phosphorus shortage will be aggravated by soil ...

2020-9-11  Soil P contents were taken from Ringeval, et al. 33 who combined global data sets from 21,24,36,37,71,72,73,74 (see Supplementary Table 1) in a soil P dynamics model to assess the contributions of ...

More

Soil phosphorus composition, loss risk and contribution to ...

2021-5-1  Phosphorus (P) is the primary limiting nutrient in most surface water, and a P concentration of over 20–35 μg/L will cause an algal bloom in a freshwater system (Ahmad et al. 2016).Non-point sources P in agricultural runoff contribute to a great portion of freshwater inputs, which accelerate eutrophication and arouse global environmental concern (Sharpley et al. 1994).

More

Phosphorus fractions and release potential of ditch ...

2011-11-25  Phosphorus (P) has been identified as a major factor in the degradation of surface water quality through its role in eutrophication (Correll 1998), and there is increasing concern regarding the control of P loss from various sources (Sharpley et al. 1994).As legislation controlling point source inputs has increased worldwide, P lost from non-point sources such as drainage channel (ditch ...

More

Estimating bioavailability of soil particulate phosphorus ...

2012-2-11  Soil sample was collected from a fertilized Chinese cabbage field along the Umeda River, Aichi prefecture, in central Japan. The depth of soil sampled (0–50 mm) represents an average effective depth of surface soil–runoff interaction for a range of soils, rainfall intensities, slopes, and soil management characteristics (Sharpley et al. 1995).

More

Prediction of available phosphorus in soil: Combined use ...

2020-10-2  2.1 Phosphorus extractions. The P-AL test was performed with a mixture of 0.1 M ammonium lactate and 0.4 M acetic acid, at pH 3.75 (Egnér et al., 1960).Water-extractable P (CaCl 2-P) was extracted with 0.0025 M CaCl 2 in a soil-solution ratio of 1:20 (w/v) for 1.5 h. A lower CaCl 2 concentration than the more commonly used 0.01 M CaCl 2 was selected because it gives an ionic

More

apatite and phosphorus mining - monter-anten

2021-4-1  Apatite Control of Phosphorus Release to . 2009-1-11 Apatite Control of Phosphorus Release to Runoff from Soils of Phosphate Mine Reclamation Areas. ... reconstructed soils on reclaimed mining sites and their ... FreeChat. phosphorus apatite mining - smoothfab.co.

More

Mineral Controls on Phosphorus Retention and Release in ...

2020-12-4  Progress 10/01/03 to 09/30/08 Outputs OUTPUTS: The Florida Agricultural Experiment Station contributed 2 phosphorus-rich soils to be shared with the regional scientists for the purpose of comparative analyses related to goals of the project. One soil was heavily influenced by dairy manure (dairy soil) and the other was from a soil forming in phosphate-rich parent materials (phosphatic soil).

More

Release of phosphorus and silicon from minerals by soil ...

Abstract Microorganisms release nutrients from minerals. However, this process is not yet well understood despite its importance for soil fertility. The aim of this study was to determine which factors control microbial phosphorus (P) and silicon (Si) release from apatite and weathered rock, and to analyze which microbial-mediated processes cause P and Si solubilization.

More

Applicability of phosphate amendments to immobilize

2019-12-2  SPLP-P of apatite II amended soils (P/Pb=5) was several times above this standard. However, the SPLP tests employed L/S of 20, which may not be exactly representative of the actual P release in the runoff rain water that merges to the streams. ¾MCP treated samples showed significantly higher P release as compared to apatite II.

More

Phosphorus Basics: Understanding Phosphorus Forms and ...

2021-8-11  Phosphorus is removed from soil by (a) crop/plant uptake, (b) runoff and erosion, and (c) leaching (figure 1). Surface runoff is the major pathway for phosphorus loss from soils. Runoff water carries away both soluble (dissolved) phosphorus and particulate (eroded soil particles) phosphorus from soil

More

Relating soil phosphorus to dissolved phosphorus in

Most models use a constant extraction coefficient (i.e., the slope of the linear regression between filterable reactive phosphorus [FRP] in runoff and soil P) to predict dissolved P release from soil to runoff, yet it is unclear how variations in soil properties, management

More

Phosphorus release from intact soil monoliths of manure ...

Phosphorus release from intact soil monoliths of ... dominant form of runoff, which contributes the most to P transport from agricultural soils (Liu, Elliott, Lobb, Flaten, ... floodwater from unamended (control) and manure-amended soil with different soil P status, and (c) to relate differences ...

More

Reducing phosphorus release from paddy soils by a fly ash ...

Reducing phosphorus release from paddy soils by a fly ash-gypsum mixture. Lee CH(1), Lee YB, Lee H, Kim PJ. Author information: (1)Division of Applied Life Science, Gyeongsang National University, Kaswa-dong, Jinju, 660-701, South Korea.

More

BIOGEOCHEMICAL INDICES OF PHOSPHORUS

2007-10-12  BIOGEOCHEMICAL INDICES OF PHOSPHORUS RETENTION AND RELEASE BY WETLAND SOILS AND ADJACENT STREAM SEDIMENTS Ed J. Dunne, Ramesh Reddy, and Mark W. Clark University of Florida/IFAS Soil and Water Science Department 106 Newell Hall P.O. Box 110510 Gainesville, Florida, USA 32611 E-mail: [email protected]

More

Prediction of available phosphorus in soil: Combined use ...

2020-10-2  2.1 Phosphorus extractions. The P-AL test was performed with a mixture of 0.1 M ammonium lactate and 0.4 M acetic acid, at pH 3.75 (Egnér et al., 1960).Water-extractable P (CaCl 2-P) was extracted with 0.0025 M CaCl 2 in a soil-solution ratio of 1:20 (w/v) for 1.5 h. A lower CaCl 2 concentration than the more commonly used 0.01 M CaCl 2 was selected because it gives an ionic

More
Copyright © 2021.Company name All rights reserved.Dawn Broken
E-mail: