نتایج جستجو برای: water retention in soil

تعداد نتایج: 17126844  

پایان نامه :وزارت علوم، تحقیقات و فناوری - دانشگاه یزد - دانشکده جغرافیا 1392

the west of esfahan province, iran, is one of the most important agricultural areas throughout the country due to the climate variability and life-giving water of zayanderood river. rice is one of the major and economic crops in this area. the most important climatic elements in agricultural activities which should be considered include temperature, relative humidity, precipitation and wind. so...

2013
Paolo Nasta Nunzio Romano Shmuel Assouline Jasper A. Vrugt Jan W. Hopmans

[1] Simultaneous scaling of soil water retention and hydraulic conductivity functions provides an effective means to characterize the heterogeneity and spatial variability of soil hydraulic properties in a given study area. The statistical significance of this approach largely depends on the number of soil samples collected. Unfortunately, direct measurement of the soil hydraulic functions is t...

Journal: :Pest management science 2004
John E Thomas L Hartwell Allen Leslie A McCormack Joseph C Vu Donald W Dickson Li-Tse Ou

The main objective of this study was to determine the influence of soil moisture, organic matter amendment and plastic cover (a virtually impermeable film, VIF) on diffusion and emissions of (Z)- and (E)-1,3-dichloropropene (1,3-D) in microplots of Florida sandy soil (Arredondo fine sand). Upward diffusion of the two isomers in the Arredondo soil without a plastic cover was greatly influenced b...

Journal: :Environmental pollution 2013
Daniela Kasel Scott A Bradford Jiří Simůnek Thomas Pütz Harry Vereecken Erwin Klumpp

Column experiments were conducted in undisturbed and in repacked soil columns at water contents close to saturation (85-96%) to investigate the transport and retention of functionalized (14)C-labeled multi-walled carbon nanotubes (MWCNT) in two natural soils. Additionally, a field lysimeter experiment was performed to provide long-term information at a larger scale. In all experiments, no break...

2017
Humberto Blanco-Canqui Robert B. Mitchell Virginia L. Jin Marty R. Schmer Kent M. Eskridge ROBERT B. MITCHELL

Perennial warm-season grasses for producing biofuel and enhancing soil properties: An alternative to corn residue removal" (2017). Faculty Publications, Department of Statistics. 45. This article has been accepted for publication and undergone full peer review but has not been through the copyediting, typesetting, pagination and proofreading process, which may lead to differences between this v...

Journal: :Soil & Tillage Research 2021

Measurement of soil water retention curves (SWRCs) is time consuming, and there no single laboratory device available to measure a SWRC over an entire range relevant pressures. The van Genuchten (vG) model commonly used characterize the shape SWRC. Bulk electrical conductivity as function content, σ(θ), has been estimate hydraulic properties unsaturated soils, thus making it possible relate σ(θ...

Journal: :تحقیقات آب و خاک ایران 0
محمدعلی محمودی مهدی شرفا غلامرضا ثواقبی

for preventing groundwater and soil from heavy metal contamination and/or to decrease contamination, and to clean up the former disposal sites from these metals, one must be beforehand able to predict the movement of these pollutants in soils. in this research in order to describe cadmium [cd (ii)] transport in soils, we incorporated an equilibrium-kinetic two-site model into the convection-dis...

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