VALIDATING A SEMI-EMPIRICAL MODEL FOR ESTIMATION OF WETTED BULB AND EMITTER SPACING

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TORABI M.; SADR GHAEINI S.H.

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Journal Paper

Paper Information

Journal: JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH Year:2004 | Volume:4 | Issue:17 Page(s): 15-28

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Information Journal Paper

Title

VALIDATING A SEMI-EMPIRICAL MODEL FOR ESTIMATION OF WETTED BULB AND EMITTER SPACING

Author(s)

TORABI M. | SADR GHAEINI S.H. | Issue Writer Certificate

Keywords

TRICKLE IRRIGATIONQ4

WETTED BULB DIMENSIONSQ4

EMITTER DISCHARGEQ4

Abstract

The semi-empirical model proposed by Schwartzman and Zur for estimating width and depth of the wetted soil volume under a single emitter was tested by field observations. As the model was developed from data resulted from only two EMITTER DISCHARGEs in two soil types, field experiments were conducted in six different soil types and twenty two EMITTER DISCHARGEs. A linear regression with zero intercept was performed to verify the validity of the model. The slope of the line of best fit and its coefficient of determination were 0.99 and 0.98, respectively. Relative error and root of mean squared errors (RMSE) were used to check the discrepancies between observed and estimated values of the maximum diameter of the resulting wetted bulbs. The amount of RMSE, maximum and minimum values of relative errors were 10 cm, 30%, and 0%, respectively. Regarding the statistical results, the validity of the model is confirmed.

Cites

A SEMI-EMPIRICAL MODEL FOR ESTIMATING THE GEOMETRY OF THE WETTING FRONT UNDER POINT SOURCE TRICKLE IRRIGATION

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APA: Copy

TORABI, M., & SADR GHAEINI, S.H.. (2004). VALIDATING A SEMI-EMPIRICAL MODEL FOR ESTIMATION OF WETTED BULB AND EMITTER SPACING. JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH, 4(17), 15-28. SID. https://sid.ir/paper/28198/en

Vancouver: Copy

TORABI M., SADR GHAEINI S.H.. VALIDATING A SEMI-EMPIRICAL MODEL FOR ESTIMATION OF WETTED BULB AND EMITTER SPACING. JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH[Internet]. 2004;4(17):15-28. Available from: https://sid.ir/paper/28198/en

IEEE: Copy

M. TORABI, and S.H. SADR GHAEINI, “VALIDATING A SEMI-EMPIRICAL MODEL FOR ESTIMATION OF WETTED BULB AND EMITTER SPACING,” JOURNAL OF AGRICULTURAL ENGINEERING RESEARCH, vol. 4, no. 17, pp. 15–28, 2004, [Online]. Available: https://sid.ir/paper/28198/en

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