Estimation of Saturated Soil Paste Salinity From Soil-Water Extracts

Aboukila, Emad; Norton, Jay B.

doi:10.1097/ss.0000000000000197

Cited by 42 publications

(43 citation statements)

References 13 publications

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“…Our expression for the relationship ECe = f(EC1:1) are almost identical to those of Sonmez et al [4] and of Zhang et al [14] who reported approximately twofold dilution when they compared the SP result with 1:1 soil/water extract. For the relationship ECe = f(EC1:5) our results are almost the same with those of Aboukila and Norton [7] who reported that mean ECe value was 5.7 times larger than EC1:5 while Sonmez et al [4] reported that mean ECe value was 8 times larger.…”

Section: Resultssupporting

confidence: 89%

“…The value of the slope when it is imposed the line to pass from the origin is practically unaffected, becoming e 1 : 5 EC 6.47 EC = . These findings are similar to the findings of other researchers [3,4,7,8,15] who also found strong linearity for the relationship ECe = f(EC1: 5). It is to be mentioned that our results do not match exactly with the other researchers' findings but lie in between them.…”

Section: Range Of Ec (Dsm −1 )supporting

confidence: 92%

“…It is to be mentioned that our results do not match exactly with the other researchers' findings but lie in between them. To be more specific the slope is less than the one found by [4] but it is larger than the one obtained by [3] or [7]. These differences may be attributed to the clay content and the clay type of the soils examined, but most seriously to the methodologies applied for the EC1:5 measurements.…”

Section: Range Of Ec (Dsm −1 )mentioning

confidence: 60%

“…Sonmez et al [4], Franzen [5], and Hogg and Henry [6] studied the above relationship in three different soil types and they proposed three different equations corresponding to each separate soil type. The possibility of the ECe prediction from measurements of the EC1:5 has been investigated in a number of regions world-wise [3,4,[7][8][9][10]. In Table 2 these ECe = f(EC1:5) expressions together with the appropriate references are given.…”

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations

An Investigation of the Relationship between the Electrical Conductivity of the Soil Saturated Paste Extract ECe with the Respective Values of the Mass Soil/Water Ratios 1:1 and 1:5 (EC1:1 and EC1:5)

et al. 2018

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The standard methodology for the soil salinity assessment is provided through the determination of the electrical conductivity (EC) of the soil saturated paste extract, ECe. This approach is cumbersome and tedious. Instead of this, it appears easier to measure the EC of various soil over water mass ratios, (soil:water), such as 1:1, 1:5. In the present study an attempt is made to compare the ECe methodology with the methods providing the EC1:1 and EC1:5. ECe, and EC1:1 or EC1:5 values were obtained from 198 soil samples from 5 different locations in Greece. It was shown that the methods providing EC1:1 and EC1:5 values are linearly correlated to the ECe methodology with a high correlation coefficient (R 2 > 0.93).

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Section: Resultssupporting

confidence: 89%

Section: Range Of Ec (Dsm −1 )supporting

confidence: 92%

Section: Range Of Ec (Dsm −1 )mentioning

confidence: 60%

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

An Investigation of the Relationship between the Electrical Conductivity of the Soil Saturated Paste Extract ECe with the Respective Values of the Mass Soil/Water Ratios 1:1 and 1:5 (EC1:1 and EC1:5)

et al. 2018

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“…Khorsandi and Yazdi [4] EC e = 7.94 (EC 1:5 ) + 0.27 d EC e = 9.14 (EC 1:5 ) − 15.72 e Sonmez et al [8] EC e = 2.03 (EC 1:1 ) − 0.41 c EC e = 7.36 (EC 1:5 ) − 0.24 c Frazen [10] EC e = 2.96 (EC 1:1 ) − 0.95 Aboukila and Norton [11] EC e = 5.04 (EC 1:5 ) + 0.37 c Chi and Wang [12] EC e = 11.74 (EC 1:5 ) − 6.15 EC e = 11.04 (EC 1:5 ) − 2.41 EC e = 11.68 (EC 1:5 ) − 5.77 Slavich and Petterson [13] EC e = f (EC 1:5 )…”

Section: References Regression Equationmentioning

confidence: 99%

Soil Salinity Assessment Using Saturated Paste and Mass Soil:Water 1:1 and 1:5 Ratios Extracts

Kargas

Chatzigiakoumis

Kollias

et al. 2018

Water

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Soil salinization is directly related to the quantity and quality of food production, and often, to increased energy demands for high-quality irrigation water. Reliable monitoring of soil salinity based on a less laborious method than the soil saturated paste (SP) extract methodology is required. In the present study, an attempt is made to relate the electrical conductivity (EC) of the soil saturated paste (SP) extract (ECe) with the EC determined in the 1:1 and 1:5 soil over water mass ratios, (soil:water) extracts (EC1:1 and EC1:5). ECe, EC1:1, and EC1:5 values were obtained for 198 soil samples from five different locations in Greece. The results have shown that strong linear relationships exist between the ECe and the EC1:1 and EC1:5 values (R2 > 0.93), and that the slopes of these linear relationships decreased from coarse to fine soil types. For 123 soil samples, the concentrations of Κ+, Νa+, Ca2+, Mg2+, and Cl− were also determined in the extracts of the three applied methodologies. Ion concentrations in the 1:1 and 1:5 extracts were highly correlated with the respective ion concentrations in the SP extracts. These findings strongly suggest that EC1:1 and EC1:5 values can be safely used for the estimation of ECe.

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Evaluation and analysis of different regression models for estimation of ECe from EC_1:5—With a case study from Buin‐Zahra, Iran*

Hassannia

Nazari

Kaviani

et al. 2020

Irrigation and Drainage

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Soil salinity is an important parameter in irrigation, drainage, and environmental studies. Determining the electrical conductivity of soil saturated paste extract (ECe) is a well-known method, but its use is limited because its production process is time-consuming and difficult. The 1:5 solution electrical conductivity (EC 1:5) is an alternative simplified method. The aim of this study was to evaluate ECe-from-EC 1:5 conversion models. A total of 123 samples from 3 soil layers were analysed. The research was planned in two phases: 1) model evaluation in soil layers, 2) model evaluation in ECe categorized data. Results show that the linear model was the best model in the second layer (R 2 = .66, mean absolute percentage error [MAPE] = 0.058), and the exponential model was the best in the other layers (R 2 = .65 to 0.67, MAPE = 0.085 to 0.060). Also, exponential and linear regressions were the best ECe estimation models in the ECe < 4 and ECe > 4 categories, respectively. In addition, the conversion factor (f) for converting ECe and EC 1:5 was obtained as 3.7-13.9, 2.8-5.0, and 3.4-5.8 for three soil layers, respectively. Results show that the use of general recommendation tables for f will lead to considerable error, and the factor must be determined specifically for each region.

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Estimation of Saturated Soil Paste Salinity From Soil-Water Extracts

Cited by 42 publications

References 13 publications

An Investigation of the Relationship between the Electrical Conductivity of the Soil Saturated Paste Extract ECe with the Respective Values of the Mass Soil/Water Ratios 1:1 and 1:5 (EC1:1 and EC1:5)

An Investigation of the Relationship between the Electrical Conductivity of the Soil Saturated Paste Extract ECe with the Respective Values of the Mass Soil/Water Ratios 1:1 and 1:5 (EC1:1 and EC1:5)

Soil Salinity Assessment Using Saturated Paste and Mass Soil:Water 1:1 and 1:5 Ratios Extracts

Evaluation and analysis of different regression models for estimation of ECe from EC_1:5—With a case study from Buin‐Zahra, Iran*

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Estimation of Saturated Soil Paste Salinity From Soil-Water Extracts

Cited by 42 publications

References 13 publications

An Investigation of the Relationship between the Electrical Conductivity of the Soil Saturated Paste Extract ECe with the Respective Values of the Mass Soil/Water Ratios 1:1 and 1:5 (EC1:1 and EC1:5)

An Investigation of the Relationship between the Electrical Conductivity of the Soil Saturated Paste Extract ECe with the Respective Values of the Mass Soil/Water Ratios 1:1 and 1:5 (EC1:1 and EC1:5)

Soil Salinity Assessment Using Saturated Paste and Mass Soil:Water 1:1 and 1:5 Ratios Extracts

Evaluation and analysis of different regression models for estimation of ECe from EC1:5—With a case study from Buin‐Zahra, Iran*

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Evaluation and analysis of different regression models for estimation of ECe from EC_1:5—With a case study from Buin‐Zahra, Iran*