Solubility of Gypsum and Its Prediction in Aqueous Solutions of Mixed Electrolytes

Arslan, Andaç; Dutt, Gordon R.

doi:10.1097/00010694-199301000-00006

Cited by 27 publications

(16 citation statements)

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“…The solubility of gypsum is in the order of 1.6-2.0 g/1 in the type of water met with here (Arslan and Dutt, 1993). Less than one litre of water per m2 is required to leach away more than the atmospheric deposition.…”

Section: Discussionmentioning

confidence: 84%

Origin of sulphur in soil and water in a Precambrian terrain, S. India.

et al. 1994

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Section: Discussionmentioning

confidence: 84%

Origin of sulphur in soil and water in a Precambrian terrain, S. India.

et al. 1994

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“…Further, the solubility of gypsum can also be affected by the presence of dominant cations or anions in the soil. For example, NaCl enhances the solubility of gypsum as compared with CaCl 2 or MgSO 4 , because of the common ion effect where the amount of the less soluble salt in solution decreases (Arslan and Dutt 1993). Jayawardane and Chan (1994) reviewed several options including deep ripping or deep ploughing to ameliorate sodic subsoils with gypsum.…”

Section: Gypsummentioning

confidence: 99%

Subsoil constraints to grain production in the cropping soils of the north-eastern region of Australia: an overview

Dang¹,

Dalal²,

Routley³

et al. 2006

Aust. J. Exp. Agric.

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“…Since gypsum is sparingly soluble (30 mmol/L H 2 O), it would make only small contribution to soil solution EC (Shaw 1999). Also, depending upon the presence of other associated cations and anions, the solubility of gypsum is further reduced by the presence of common ions and enhanced by the presence of dissimilar ions (Arslan and Dutt 1993).…”

Section: Relationships Between Cll and Subsoil Constraintsmentioning

confidence: 99%

Subsoil constraints in Vertosols: crop water use, nutrient concentration, and grain yields of bread wheat, durum wheat, barley, chickpea, and canola

Dang¹,

Routley²,

McDonald³

et al. 2006

Aust. J. Agric. Res.

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Abstract. Single or multiple factors implicated in subsoil constraints including salinity, sodicity, and phytotoxic concentrations of chloride (Cl) are present in many Vertosols including those occurring in Queensland, Australia. The variable distribution and the complex interactions that exist between these constraints limit the agronomic or management options available to manage the soil with these subsoil constraints. The identification of crops and cultivars adapted to these adverse subsoil conditions and/or able to exploit subsoil water may be an option to maintain productivity of these soils. We evaluated relative performance of 5 winter crop species, in terms of grain yields, nutrient concentration, and ability to extract soil water, grown on soils with various levels and combinations of subsoil constraints in 19 field experiments over 2 years. Subsoil constraints were measured by levels of soil Cl, electrical conductivity of the saturation extract (EC se ), and exchangeable sodium percentage (ESP). Increasing levels of subsoil constraints significantly decreased maximum depth of water extraction, grain yield, and plant-available water capacity for all the 5 crops and more so for chickpea and durum wheat than bread wheat, barley, or canola. Increasing soil Cl levels had a greater restricting effect on water availability than did EC se and ESP. We developed empirical relationships between soil Cl, EC se , and ESP and crop lower limit (CLL) for estimating subsoil water extraction by 5 winter crops. However, the presence of gypsum influenced the ability to predict CLL based on the levels of EC se . Stronger relationships between apparent unused plant-available water (CLL -LL15; LL15 is lower limit at −1.5 MPa) and soil Cl concentrations than ESP or EC se suggested that the presence of high Cl in these soils most likely inhibited the subsoil water extraction by the crops. This was supported by increased sodium (Na) and Cl concentration with a corresponding decrease in calcium (Ca) and potassium (K) in young mature leaf of bread wheat, durum wheat, and chickpea with increasing levels of subsoil constraints. Of the 2 ions, Na and Cl, the latter appears to be more damaging than the former, resulting in plant dieback and reduced grain yields.

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Solubility of Gypsum and Its Prediction in Aqueous Solutions of Mixed Electrolytes

Cited by 27 publications

References 0 publications

Origin of sulphur in soil and water in a Precambrian terrain, S. India.

Origin of sulphur in soil and water in a Precambrian terrain, S. India.

Subsoil constraints to grain production in the cropping soils of the north-eastern region of Australia: an overview

Subsoil constraints in Vertosols: crop water use, nutrient concentration, and grain yields of bread wheat, durum wheat, barley, chickpea, and canola

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