Effect of Exchangeable Sodium and Phosphogypsum on Crust Structure—Scanning Electron Microscope Observations

Gal, M.; Arcan, Lelia; Shainberg, I.; Keren, R.

doi:10.2136/sssaj1984.03615995004800040035x

Cited by 74 publications

(35 citation statements)

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“…The removal of soluble salts had a beneficial effect on the physico-chemical soil properties. Many research works have proved the beneficial effects of calcium sulphate application on the physico-chemical properties of sodic-saline soils: it increases permeability and leaching (Frenkel et al, 1989;Baumhardt et al, 1992;Ilyas et al, 1997), favours soil flocculation and macroporosity (Chartres et al, 1985;Greene et al, 1988), reduces bulk density (Southard et al, 1988) and surface crusting (Gal et al, 1984).…”

Section: Resultsmentioning

confidence: 99%

Reclamation of Sodic-Saline Soils. Barley Crop Response

Lacolla¹,

Cucci²

2008

Ital J Agronomy

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The research was aimed at assessing the salinity and sodicity effects of two soil types submitted to correction on barley crop. The two soils, contained in cylindrical pots (0.40 m in size and 0.60 m h) supplied with a bottom valve for the collection of drainage water and located under shed to prevent the leaching action of rainfall, were clay-textured and saline and sodic-saline at barley seeding, as they had been cultivated for 4 consecutive years with different herbaceous species irrigated with 9 types of brackish water. In 2002-2003 the 2 salinized and sodium-affected soils (ECe and ESP ranging respectively from 5.84-20.27 dSm -1 to 2.83-11.19%), submitted to correction, were cultivated with barley cv Micuccio, and irrigated with fresh water (ECw = 0.5 dS m -1 and SAR = 0.45) whenever 30% of the maximum soil available moisture was lost by evapotranspiration. Barley was shown to be a salt-tolerant species and did not experience any salt stress when grown in soils with an initial ECe up to 11 dS m -1 . When it was grown in more saline soils (initial ECe of about 20 dS m -1 ), despite the correction, it showed a reduction in shoot biomass and kernel yield by 26% and 36% respectively, as compared to less saline soils.

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Section: Resultsmentioning

confidence: 99%

Reclamation of Sodic-Saline Soils. Barley Crop Response

Lacolla¹,

Cucci²

2008

Ital J Agronomy

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“…Although statistically significant, the differences in surface D b among amendment treatments were considered small and may be vestiges of the reclamation process. Lower D b 45 and D b 75 in gypsum-amended plots than sulfur-amended or control plots was anticipated because the addition of gypsum should have decreased bulk density due to improved soil aggregation (Gal et al 1984). The Ca 2+ displaces exchangeable Na + and may flocculate clay minerals within the minespoil.…”

Section: Bulk Densitymentioning

confidence: 99%

In situ amelioration of sodic minespoil with chemical amendments and crop management: II. Soil physical properties, soil moisture and plant growth

Sansom¹,

Chanasyk²,

Naeth³

et al. 1998

Can. J. Soil. Sci.

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. 1998. In situ amelioration of sodic minespoil with chemical amendments and crop management: II. Soil physical properties, soil moisture and plant growth. Can. J. Soil Sci. 78: 667-674. The effects of sulfur and gypsum amendments in conjunction with crop management (fallow/barley and forage) on soil physical properties, soil moisture and vegetation characteristics were measured on a sodic and calcareous sandy loam minespoil at the Highvale coal mine, west of Edmonton, Alberta.Amendment and crop management had no significant effect on bulk density, plant species composition, canopy cover, ground cover or annual aboveground biomass. Crop management significantly affected penetration resistance (which was generally higher under forage), while amendment treatments did not. Profile soil moisture was lowest within the gypsum-amended plots at all depths, and was similar for sulfur-amended and control plots. Crop management affected profile soil moisture, with significantly less moisture under continuous forage than fallow/barley. As percolation is critical to the effectiveness of amendments in the amelioration process, cereal/fallow rotations are more effective than continuous forage in facilitating that process. rotation jachère-orge, culture fourragère, sur les propriétés physiques et sur le profil hydrique du sol ainsi que sur la végétation. Aucun effet de l'un ou l'autre des traitements n'était observé sur la densité apparente du sol, ni sur la composition botanique, le couvert aérien, la couverture du sol (litière et sol nu) ou la biomasse aéri-enne annuelle. Par ailleurs, seul le système cultural influait sur la résistance du sol à la pénétration, laquelle était généralement supérieure sous culture fourragère. La teneur en eau du profil était particulièrement basse à toutes les profondeurs dans le traitement au gypse, mais dans le cas du soufre il n'y avait pas de différence avec les parcelles témoins. Selon le système cultural utilisé, le bilan hydrique du sol variait, étant significativement moins abondant sous prairie continue que dans l'assolement jachère-orge. Vu que la percolation est essentielle à l'action amélioratrice des amendements, les assolements jachère-céréale sont plus efficaces à cet égard que les cultures fourragères permanentes.

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“…Many research works have proved the beneficial effects of calcium sulphate application on the physicochemical properties of sodic-saline soils, including a rise in permeability and leaching (Ilyas et al, 1997), an increase in soil flocculation and macroporosity (Greene et al, 1988), and a reduction of surface crusting (Gal et al, 1984).…”

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confidence: 99%

Effect of reclamation on the structure of silty-clay soils irrigated with saline-sodic waters

Cucci¹,

Lacolla²,

Pagliai³

et al. 2015

International Agrophysics

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The objective of the work was to evaluate, by using the micromorphometric method, the effects of reclamation on porosity of two different clay loam soils irrigated with saline-sodic waters. Soil samples of the Ap horizon were put in cylindrical containers and irrigated with 9 types of saline-sodic waters (3 levels of salinity combined with 3 levels of sodicity). After a 4-year period, correction treatments were initiated by addition of calcium sulphate and leaching until electrical conductivity and sodium absorption ratio values of the drainage water matched 3 dS m-1 and 9, respectively. After 2 years of correction treatments, undisturbed soil samples were taken from the surface layer and soil thin sections for porosity measurements. Both soils did not show critical macroporosity values (> 10%, below this threshold a soil is classified as compact). Nevertheless, the soils exhibited a different behaviour: total porosity of the Pachic Haploxeroll soil was not affected by difference in water salinity and alkalinity; on the contrary, the Udertic Ustochrept soil showed a lower porosity associated with higher salt concentration in the irrigation waters. This may be due to the different iron and aluminium sesquioxides content and, as a consequence, a different effect on soil aggregate stability.

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Effect of Exchangeable Sodium and Phosphogypsum on Crust Structure—Scanning Electron Microscope Observations

Cited by 74 publications

References 0 publications

Reclamation of Sodic-Saline Soils. Barley Crop Response

Reclamation of Sodic-Saline Soils. Barley Crop Response

In situ amelioration of sodic minespoil with chemical amendments and crop management: II. Soil physical properties, soil moisture and plant growth

Effect of reclamation on the structure of silty-clay soils irrigated with saline-sodic waters

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