Aziz Amoozegar

Transport of Phosphorus from Three Fertilizers Through High- and Low-Phosphorus Soils

Lily DuPlooy, Joshua L. Heitman, Luciano Colpo Gatiboni, Aziz Amoozegar

Chemical fertilizers are commonly used to supply phosphorus and other nutrients to crops, but due to high affinity of soils for P fixation, over-application of P fertilizer is common, which may result in groundwater and surface water pollution. To increase P use …

us (code pays fourni par la source)

Microscale imaging of phosphate mobility under unsaturated flow as affected by a fertilizer enhancing polymer

Aziz Amoozegar, Dean L. Hesterberg, Sarah A. Doydora, Paul Andrew Northrup et autres

Abstract Phosphorus (P) fixation in soil following fertilizer application is a major issue that may be mitigated through a number of methods. Our main objective was to utilize an innovative unsaturated flow system to directly image the mobility of P in soil …

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Analysis of Water Volume Required to Reach Steady Flow in the Constant Head Well Permeameter Method

Aziz Amoozegar, Joshua L. Heitman

The most common method for in situ measurement of saturated hydraulic conductivity (Ksat) of the vadose zone is the constant head well permeameter method. Our general objective is to provide an empirical method for determining volume of water required for measuring Ksat …

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Water vapor transport through bioenergy grass residues and its effects on soil water evaporation

Henrique D. R. Carvalho, Adam M. Howard, Aziz Amoozegar, Carl R. Crozier et autres

Abstract Miscanthus is a productive perennial grass that is suitable as a bioenergy crop in “marginal” lands (e.g., eroded soils) with low water holding capacity. However, little is known about the impact of miscanthus residues on vapor transport and soil water budgets. …

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How Does the Use of Biochar, Phosphate, Calcite, and Biosolids Affect the Kinetics of Cadmium Release in Contaminated Soil?

Frederico Prestes Gomes, Matheus Bortolanza Soares, Aziz Amoozegar, Luís Reynaldo Ferracciú Alleoni

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Subsurface Lateral Solute Transport in Turfgrass

Manuel E. Camacho, Carlos A. Faúndez-Urbina, Aziz Amoozegar, Travis W. Gannon et autres

Turfgrass managers have suspected that runoff-independent movement of herbicides and fertilizers is partially responsible for uneven turfgrass quality in sloped areas. We hypothesized that subsurface lateral solute transport might explain this phenomenon especially in areas with abrupt textural changes between surface and …

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Influence of compost amendment rate and level of compaction on the hydraulic functioning of soils

Christina N. Kranz, Richard A. McLaughlin, Aziz Amoozegar, Joshua L. Heitman

Abstract There has been widespread interest in using compost to improve the hydrologic functions of degraded soils at construction sites for reducing runoff and increasing infiltration. The objective of this study was to determine the effects of compost amendment rate on saturated …

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Comparison of soil particle density determined by a gas pycnometer using helium, nitrogen, and air

Aziz Amoozegar, Joshua L. Heitman, Christina N. Kranz

Abstract Soil particle density (ρ s ) is often assumed as 2.65 g cm −3 (density of quartz). The objectives of this study were to compare the use of different gases for determining ρ s in a gas pycnometer and relate measured …

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Evaluation of imazapic and flumioxazin carryover risk for Carinata (Brassica carinata) establishment

Manuel E. Camacho, Travis W. Gannon, Khalied A. Ahmed, Michael J. Mulvaney et autres

Abstract Carinata (Brassica carinata A. Braun) is a potential crop for biofuel production, but the risk of injury resulting from carryover of soil herbicides used in rotational crops is of concern. The present study evaluated the carryover risk of imazapic and flumioxazin …

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Measurement of skeletal density and porosity of construction materials using a new proposed vacuum pycnometer

Sung‐Woo Park, Min-Chang Kang, Yanchen Oinam, Aziz Amoozegar et autres

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Particle Densities of Horticultural Substrates

Paul C. Bartley, Aziz Amoozegar, William C. Fonteno, Brian E. Jackson

The heterogeneity of horticultural substrates makes basic physical characteristics, such as total porosity and particle density, difficult to estimate. Due to the material source, inclusion of occluded pores, and hydrophobicity, particle density values reported from using liquid pyknometry, vary widely. Gas pycnometry …

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Immobilization of lead by amendments in a mine-waste impacted soil: Assessing Pb retention with desorption kinetic, sequential extraction and XANES spectroscopy

Frederico Prestes Gomes, Matheus Sampaio Carneiro Barreto, Aziz Amoozegar, Luís Reynaldo Ferracciú Alleoni

was formed in soil samples amended with biosolids. Phosphate and lime increased the Pb extracted in the residual fraction, thus showing that more recalcitrant species, such as pyromorphite, were formed. Biosolids and biochar treatments decreased the Pb in the residual fraction, and …

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