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Soil ECe Prediction from Different EC Water Ratios and Sample Sizes in Salt-affected Soils |
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| รหัสดีโอไอ | |
| Creator | Porntip Phontusang |
| Title | Soil ECe Prediction from Different EC Water Ratios and Sample Sizes in Salt-affected Soils |
| Contributor | Koddam Rukadi, Anongnat Sriprachote |
| Publisher | Thai Society of Higher Education Institutes on Environment |
| Publication Year | 2568 |
| Journal Title | EnvironmentAsia |
| Journal Vol. | 18 |
| Journal No. | 2 |
| Page no. | 121-130 |
| Keyword | Soil salinization, Electrical conductivity, EC 1:2.5 and EC 1:5, Linear regression, Northeast Thailand |
| URL Website | http://www.tshe.org/ea/index.html |
| Website title | EnvironmentAsia |
| ISSN | 1906-1714 |
| Abstract | Given the environmental hazards worldwide, salt-affected soils present an appealing topicfor discussion. This study investigates (i) the correlation between the electrical conductivityof saturated paste extract (ECe) and the electrical conductivity (EC) of water ratios 1:2.5 and1:5 and (ii) sample size (n = 25, 50, and 100) measurements for the model accuracy by usinglinear regression. In total, 300 topsoil samples (0 - 30 cm) were collected from three study sitesin different classes (class 1, class 2, and class 3) of salt-affected soils in Muang Pia Subdistrict,Ban Phai District, Khon Kaen Province. The results showed there was the highest correlationintensity between ECe and EC water ratio 1:5 from sample size n = 25 (R2 = 0.392), in contrastto weak correlation with the same sample size (R2 = 0.028), and moderate correlation with anincreased sample size n = 50 (R2 = 0.157), for classes 2, 1, and 3, respectively. Finally, it canbe concluded that the most effective approach to assessing the correlation between ECe andEC water ratios is by using EC water ratio 1:5 according to the highest correlation intensity,more diluted extract and technically used than EC 1:2.5. The findings of this study stronglyrecommend the improvement of soil ECe assessment from soil EC water ratios in the futureby the incorporation of further point data and field area utilizing this approach. |
