Assessment of saturated soil paste salinity from 1 : 2.5 and 1 : 5 soil-water extracts for coarse textured soils
Other Title(s)
تقدير ملوحة عجينه التربة المشبعة باستخدام مستخلصات التربة المائية 1 : 2.5 و 1 : 5 للأراضي الخشنة القوام
Joint Authors
Abd al-Ati, Imad Fawzi
Abu Kaylah, Imad Faruq
Source
Alexandria Science Exchange Journal
Issue
Vol. 38, Issue 4 (31 Dec. 2017), pp.722-732, 11 p.
Publisher
Publication Date
2017-12-31
Country of Publication
Egypt
No. of Pages
11
Main Subjects
Abstract EN
It is important to determine soil salinity with an accurate and simple method.
Electrical conductivity (EC) of soil-water extracts is commonly used to assess soil salinity because it is an easier method than the standard saturated paste extract (ECe).
However, it is essential to convert EC of soil-water extracts to ECe because plant response and salinity remediation are based mainly on ECe values.
Our objectives were to develop and validate models to predict ECe from EC of 1:2.5 and 1:5 soil-water extracts (EC1:2.5, EC1:5).
One hundred thirty-six coarse textured soil samples were collected from El Beheira Governorate, Egypt, of which 115 were used to develop models and 21 were used to validate these models.
Electrical conductivity was determined using 1:2.5 and 1:5 soil-water extracts and saturated paste extracts (ECe).
Linear regression models were established for the two methods.
The results showed that ECe was highly significant correlated (R2 = 0.96 to 0.97, P < 0.001) with EC1:2.5 and EC1:5 for ECe values ranging between 0.3 and 18.3 dS m-1.
An independent validation set of 21 soil samples showed that the R2 and slopes of the regressions between predicted ECe from both EC1:2.5 and EC1:5 values and direct ECe values were very close to 1.0.
Additionally, these new models reduced ECe prediction errors by 2.4 to 7 times when compare with 8 predictive models reported in the literature.
Confirming that the regressions developed can reliably assess soil salinity instead of the more time-consuming and expensive saturated paste extraction.
American Psychological Association (APA)
Abu Kaylah, Imad Faruq& Abd al-Ati, Imad Fawzi. 2017. Assessment of saturated soil paste salinity from 1 : 2.5 and 1 : 5 soil-water extracts for coarse textured soils. Alexandria Science Exchange Journal،Vol. 38, no. 4, pp.722-732.
https://search.emarefa.net/detail/BIM-952566
Modern Language Association (MLA)
Abu Kaylah, Imad Faruq& Abd al-Ati, Imad Fawzi. Assessment of saturated soil paste salinity from 1 : 2.5 and 1 : 5 soil-water extracts for coarse textured soils. Alexandria Science Exchange Journal Vol. 38, no. 4 (Oct. / Dec. 2017), pp.722-732.
https://search.emarefa.net/detail/BIM-952566
American Medical Association (AMA)
Abu Kaylah, Imad Faruq& Abd al-Ati, Imad Fawzi. Assessment of saturated soil paste salinity from 1 : 2.5 and 1 : 5 soil-water extracts for coarse textured soils. Alexandria Science Exchange Journal. 2017. Vol. 38, no. 4, pp.722-732.
https://search.emarefa.net/detail/BIM-952566
Data Type
Journal Articles
Language
English
Notes
Record ID
BIM-952566