Correlation between electrical conductivity in saturated paste (ECe) and 1:2, 1:5 soil water ratio in selected Yazd soils with different Gypsum
2011
Alaei Yazdi, Fatemeh | Khorsandi, Farhad
Salinity is a major problem in most of agricultural lands of iran and yazd province. Adequate knowledge of the amount and distribution of soluble salts in soil is required for proper management of saline soils.Soil salinity is conventionally measured in aqueous extracts of saturated soil pastes and all standard tables for salinity managements and reclamation and plant cultivation are based on ECe.The conventional method requires extensive time and labor, which makes it expensive and difficult for monitoring and mapping purposes.but we can use other soil:water ratio extracts for ECe prediction. The main objective of this study was to develop relationships between ECe and EC of two extraction ratios (1:2 and 1:5) for the soils in Yazd Province. Another objective of this study was to validate the conversion factors and formulas developed here, and recommend the most reliable relationships. Soil texture and type of salts present in soil has been shown to affect the relationships between ECe and conductivity values of other soil/water ratio extracts hence soils data. Based on the results, 1:2 soil/water ratio extraction method can be used to accurately assess salinity of soils in Yazd Province.Since gypsum is commonly present in soils of Yazd, it is strongly recommended to separate the soils into soils with and without gypsum, and then use the appropriate corresponding relationships.
اظهر المزيد [+] اقل [-]الكلمات المفتاحية الخاصة بالمكنز الزراعي (أجروفوك)
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