Results 141 to 150 of about 1,631,965 (189)

Metolachlor and chlorothalonil dissipation in gypsum-amended soil

Journal of Environmental Science and Health, Part B, 2010
This work focused on the interactive effects of the fungicide chlorothalonil (2,3,4,6-tetrachloro-1,3-benzendicarbonitrile) and gypsum on the persistence of the soil-residual herbicide metolachlor (2-chloro-N-(6-ethyl-o-tolyl)-N-[(1RS)-2-methoxy-1-methylethyl]acetamide).
Paul M, White, Thomas L, Potter
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Effects of Gypsum on Trace Metals in Soils and Earthworms

Journal of Environmental Quality, 2014
Mined gypsum has been beneficially used for many years as an agricultural amendment. A large amount of flue gas desulfurization (FGD) gypsum is produced by removal of SO from flue gas streams when fuels with high S content are burned. The FGD gypsum, similar to mined gypsum, can enhance crop production.
Liming, Chen, Dave, Kost, Yongqiang, Tian, Xiaolu, Guo, Dexter, Watts, Darrell, Norton, Richard P, Wolkowski, Warren A, Dick   +7 more
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Mechanical properties of gypsum soils

2020
On the basis of many years’ laboratory and in-situ investigations qualitative and quantative magnitudes have been established of strength changes and development of suffusion settlement during base dissolving. Methods of calculation of base suffusion deformations during long-term watering have been developed.
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Impact of Gypsum on Electromagnetic Properties of Desert Soils

IEEE Geoscience and Remote Sensing Letters, 2011
Radar remote sensing of soil requires an understanding about the electromagnetic properties of soils. Propagation velocities and attenuation rates at ground-penetrating radar frequencies (0.25-4 GHz) were measured as a function of soil moisture content for soils from Iraq and Afghanistan.
Gary Koh, Lillian D. Wakeley
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Recognition of gypsum-responsive soils

Australian Journal of Soil Research, 1974
Gypsum response for 53 soils has been measured in terms of air-dry crust strength (resistance to penetrometer, Y1) and subterranean clover seedling emergence (Y2) in three glasshouse experiments. It was also measured in terms of hydraulic conductivity (Y3) of samples taken from the treated and untreated soils at the end of the experiments, and this ...
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Role of gypsum on microstructure and strength of soil

Environmental Geotechnics, 2016
Mineralogical and microstructural changes in montmorillonitic soil blended with variable gypsum contents were carried out using X-ray diffraction analysis, scanning electron microscope and energy dispersive X-ray analysis to understand the alteration in strength behaviour.
Arvind Kumar Jha, Puvvadi V. Sivapullaiah   +1 more
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Gypsum soil amendment in metal-polluted soils—an added environmental hazard

Chemosphere, 2021
Scientists around the world have long been searching for effective strategies to reduce the bioavailability of metals in contaminated soils. In case of metal-spiked soils, some studies have proposed gypsum as a soil amendment to alleviate metal phytotoxicity.
Tatiana A. Dubrovina, Artem A. Losev, Mikhail M. Karpukhin, Evgenii L. Vorobeichik, Elvira A. Dovletyarova, Vasyl A. Brykov, Ramilla A. Brykova, Rosanna Ginocchio, Carolina Yáñez, Alexander Neaman   +9 more
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Use of Gypsum on Soils: A Review

1989
Gypsum is a relatively common mineral that is widely available in agricultural areas and has a number of specialized agronomic uses, principally as a Ca source on legumes and as a soil conditioner on sodic soils. Recent research has suggest that the utility of gypsum may extend to a greater range of soils and crops than previously acknowledged.
I. Shainberg, M. E. Sumner, W. P. Miller, M. P. W. Farina, M. A. Pavan, M. V. Fey   +5 more
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The Reclamation of Sodic Soils by Gypsum Dissolution [PDF]

The application of gypsum to sodic soils is a commonly used agricultural practice to improve soil structure and water infiltration rates. The gypsum provides a major source of calcium, which replaces exchangeable sodium present in soils, and consequently minimises dispersive and swelling effects in sodic soils.
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The role of gypsum in the reactions of phosphate with soils

Geoderma, 2006
Abstract The aim of this study was to examine the mechanisms by which gypsum increases the sorption of fertilizer-P in soils of arid and semi-arid regions. Either gypsum or soil (Usher from the UK; pH 7.8, 7% organic matter, 21% CaCO 3 : Yasouj from Iran; pH 8.2, 1.4% OM, 18% CaCO 3 : Ghanimeh from Saudi Arabia; pH 7.8, 1% OM, 26% CaCO 3 , 13% gypsum)
Mohammed Panahi Kordlaghari, D.L. Rowell
openaire   +1 more source