ESTIMATION OF CROP EVAPOTRANSPIRATION IN DIFFERENT PROBABILITY LEVELS: CASE STUDY IN MARAGHEH, EAST AZARBAIJAN

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NIKBAKHT J.; MOHAMMADI K.; EHTESHAMI MAJID

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Journal: Year:2007 | Volume:13 | Issue:1 Page(s): 95-106

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Information Journal Paper

Title

ESTIMATION OF CROP EVAPOTRANSPIRATION IN DIFFERENT PROBABILITY LEVELS: CASE STUDY IN MARAGHEH, EAST AZARBAIJAN

Author(s)

NIKBAKHT J. | MOHAMMADI K. | EHTESHAMI MAJID | Issue Writer Certificate

Keywords

CROP AND REFERENCE EVAPOTRANSPIRATIONQ3

CROP COEFFICIENTQ3

PROBABILITY LEVELQ3

PEAK WATER REQUIREMENT PERIODQ3

Abstract

It is recommended to use the average daily crop evapotranspiration (ETc) to calculate the peak water requirement with proper PROBABILITY LEVEL. In this case, crop will receive necessary water and it will prevent the water stress. The effecting factors on choosing PROBABILITY LEVEL are soil texture, risk level accepted by farmers, and irrigation method. In this research, starting and ending dates of maximum water requirement period for crop patterns in agricultural lands under Alavian Dam, Maragheh, have been deternlined. Based on these dates, average daily ETc for periods of 1 to 30 day with different PROBABILITY LEVELs have been calculated. The results show that the differences in ETc in different PROBABILITY LEVELs are considerable and it can affect the design of irrigation system, significantly. In addition, it is possible to obtain the average daily ETc for PEAK WATER REQUIREMENT PERIOD with selected PROBABILITY LEVEL from calculated curves. The comparison with 10-day period with 50% PROBABILITY LEVEL, which is a common procedure in irrigation system design, showed that crop can receive up to 25% less water in peak period. This stress for sensitive crops can significantly reduce the crop yield.

Cites

ESTIMATION OF SUGAR BEET IRRIGATION REQUIREMENT IN DIFFERENT REGIONS OF FARS PROVINCE IN CRITICAL CONDITIONS AND DEFINITE PROBABILITY LEVELS

References

تاثیر روش محاسبه ETo ، احتمال وقوع و طول دوره حداکثر مصرف آب بر تبخیر-تعرق پتانسیل گیاه مرجع

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APA: Copy

NIKBAKHT, J., MOHAMMADI, K., & EHTESHAMI, MAJID. (2007). ESTIMATION OF CROP EVAPOTRANSPIRATION IN DIFFERENT PROBABILITY LEVELS: CASE STUDY IN MARAGHEH, EAST AZARBAIJAN. JOURNAL OF AGRICULTURAL SCIENCES, 13(1), 95-106. SID. https://sid.ir/paper/7706/en

Vancouver: Copy

NIKBAKHT J., MOHAMMADI K., EHTESHAMI MAJID. ESTIMATION OF CROP EVAPOTRANSPIRATION IN DIFFERENT PROBABILITY LEVELS: CASE STUDY IN MARAGHEH, EAST AZARBAIJAN. JOURNAL OF AGRICULTURAL SCIENCES[Internet]. 2007;13(1):95-106. Available from: https://sid.ir/paper/7706/en

IEEE: Copy

J. NIKBAKHT, K. MOHAMMADI, and MAJID EHTESHAMI, “ESTIMATION OF CROP EVAPOTRANSPIRATION IN DIFFERENT PROBABILITY LEVELS: CASE STUDY IN MARAGHEH, EAST AZARBAIJAN,” JOURNAL OF AGRICULTURAL SCIENCES, vol. 13, no. 1, pp. 95–106, 2007, [Online]. Available: https://sid.ir/paper/7706/en

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