A Model to Estimate Soil Water Depletion Coefficient using Plant and Soil Properties

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MESKINI VISHKAEI FATMEH; MOHAMMADI MOHAMMAD HOSEIN; NEISHABOURI MOHAMMAD REZA; SHEKARI FARID

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Paper Information

Journal: Iranian Journal of Soil and Water Research Year:2017 | Volume:48 | Issue:4 Page(s): 749-758

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Title

A Model to Estimate Soil Water Depletion Coefficient using Plant and Soil Properties

Author(s)

MESKINI VISHKAEI FATMEH | MOHAMMADI MOHAMMAD HOSEIN | NEISHABOURI MOHAMMAD REZA | SHEKARI FARID | Issue Writer Certificate

Keywords

Soil available waterQ1

Plant response factorQ1

Soil critical moistureQ1

canolaQ1

wheatQ1

Abstract

Within the present study, a conceptual mathematical model is developed to determine the relationship between plant response to water factor (ky) and Soil critical moisture ( c) below which the plant is under stress. The evaluation of model performance carried out using a set of experimental data from a green-house trial. The results showed that for a given Ky, relative plant yield (Yr) is linearly reduced by decreasing the differences of soil moisture from  c ( c- ). The greater sensitivity of plant type or growth stage to water deficit (higher Ky values) caused more slope of the linear relationship between Yr and ( c- ). In other words, more allowable depletion coefficients can be assigned to the plants with low Ky values. Moreover, for a given Yr, plant sensitivity is exponentially increased by the reduction of soil moisture. In addition to confirming the model results, experimental observations indicated that the critical moisture of clay loam soil for either soil was 0. 28 cm3 cm-3, while the  c values for sandy loam soil for wheat and canola were 0. 21 and 0. 195 cm3 cm-3, respectively. Soil allowable depletion coefficient for wheat in either soil was obtained about 0. 35. This was when, soil allowable depletion coefficient for canola in sandy loam soil (F=0. 44) was more than clay loam soil (F=0. 38).

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APA: Copy

MESKINI VISHKAEI, FATMEH, MOHAMMADI, MOHAMMAD HOSEIN, NEISHABOURI, MOHAMMAD REZA, & SHEKARI, FARID. (2017). A Model to Estimate Soil Water Depletion Coefficient using Plant and Soil Properties. IRANIAN JOURNAL OF SOIL AND WATER RESEARCH, 48(4 ), 749-758. SID. https://sid.ir/paper/225717/en

Vancouver: Copy

MESKINI VISHKAEI FATMEH, MOHAMMADI MOHAMMAD HOSEIN, NEISHABOURI MOHAMMAD REZA, SHEKARI FARID. A Model to Estimate Soil Water Depletion Coefficient using Plant and Soil Properties. IRANIAN JOURNAL OF SOIL AND WATER RESEARCH[Internet]. 2017;48(4 ):749-758. Available from: https://sid.ir/paper/225717/en

IEEE: Copy

FATMEH MESKINI VISHKAEI, MOHAMMAD HOSEIN MOHAMMADI, MOHAMMAD REZA NEISHABOURI, and FARID SHEKARI, “A Model to Estimate Soil Water Depletion Coefficient using Plant and Soil Properties,” IRANIAN JOURNAL OF SOIL AND WATER RESEARCH, vol. 48, no. 4 , pp. 749–758, 2017, [Online]. Available: https://sid.ir/paper/225717/en

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