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Information Journal Paper

Title

Investigating the simultaneous effect of irrigation water temperature and pressure on discharge of Irrigation drip tapes of seaming and plaque equipped

Pages

  185-199

Abstract

 Background and Objectives: A drip Tape irrigation system is a new pressurized irrigation system. The performance of this system depends on the choice of irrigation Tape and its hydraulics and lack of attention to it will reduce the irrigation efficiency and water distribution uniformity, increase the system operating time, and Tapes changing constantly. Numerous factors affect the discharge of the drip Tape irrigation, the most important of which are the changes in pressure and temperature of the irrigation water. Changes in field Topography, unsuitable design of the irrigation system, as well as the use of Tapes with long length, cause a pressure difference between the drippers of the irrigation Tapes. Hot water is also considered a freshwater resource in the world and is used directly for irrigation in some countries. Also, the water temperature of the laterals pipes exposed to direct sunlight increases significantly. In some studies, the effect of increasing or decreasing water temperature on the discharge of Tapes of drip irrigation has been studied, but in this study, the effect of water temperature in different operating pressures on the two types of drip irrigation Tapes of seaming and plaque equipped has been studied and was attempted to present the results as applied equations and compared. Materials and Methods: In this study, 10 types of drip irrigation Tapes were selected from two types of seaming and plaque equipped with the codes ID, I, T1, T2, T3, T4, B, S, P, and YD. In each Tape, 25 incisions were tested, which every incision included at least 3 dripper units. The length of each incision was in the range of 100 to 120 cm. In order to investigate the simultaneous effect of pressure and Irrigation water temperature on the discharge of irrigation Tapes, a physical model was designed and built in the Research Laboratory of Water Science and Engineering, University of Kurdistan. 4 different Irrigation water temperatures, including 13, 23, 33, and 43 centigrade, were applied to the irrigation Tapes at operating pressures of 1 meter to 1. 2 times the maximum pressure. All tests were performed according to ISO 9261 and IRISI 6775. General Equations of discharge-Pressure and normalized discharge-Temperature, all Tapes were obtained. To investigate the effect of Irrigation water temperature on the discharge of irrigation Tapes, data analysis was performed by SAS statistical software in the form of a completely randomized block design. Then, if the temperature effect on the irrigation Tape discharge was significant, the mean discharge at different temperatures was compared with the LSD test at a confidence level of α =0. 05. Results: In all drip irrigation Tapes and temperatures studied, the power of the discharge-pressure equation was greater than 0. 2 and less than 0. 8, indicating that all the Tapes were of the pressure-non compensating type and their flexibility is in terms of pressure changes desirable and acceptable. The effect of temperature on the discharge of all irrigation Tapes was significant (P<0. 05) and often increased with increasing temperature. Also, changes in temperature caused changes in the coefficients of the equations, which, of course, did not have a definite trend. The sensitivity of Tape/fa?page=1&sort=1&ftyp=all&fgrp=all&fyrs=all" target="_blank">Plaque equipped drip irrigation Tapes to temperature changes was lower than Tape/fa?page=1&sort=1&ftyp=all&fgrp=all&fyrs=all" target="_blank">Seaming drip irrigation Tapes and had lower discharge changes. Conclusion: All of the drip irrigation Tapes studied are of good quality in terms of sensitivity to pressure changes. Also, due to the fact that increasing the temperature of irrigation water increases the discharge of the Tapes, it is recommended to use the plaque equipped Tapes and normalized discharge equations proposed by the present study in areas where the changes in Irrigation water temperature are significant.

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    APA: Copy

    Gavazi, F., AMANI, SH., & MAROUFPOOR, E.. (2021). Investigating the simultaneous effect of irrigation water temperature and pressure on discharge of Irrigation drip tapes of seaming and plaque equipped. JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES), 27(6 ), 185-199. SID. https://sid.ir/paper/958255/en

    Vancouver: Copy

    Gavazi F., AMANI SH., MAROUFPOOR E.. Investigating the simultaneous effect of irrigation water temperature and pressure on discharge of Irrigation drip tapes of seaming and plaque equipped. JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES)[Internet]. 2021;27(6 ):185-199. Available from: https://sid.ir/paper/958255/en

    IEEE: Copy

    F. Gavazi, SH. AMANI, and E. MAROUFPOOR, “Investigating the simultaneous effect of irrigation water temperature and pressure on discharge of Irrigation drip tapes of seaming and plaque equipped,” JOURNAL OF WATER AND SOIL CONSERVATION (JOURNAL OF AGRICULTURAL SCIENCES AND NATURAL RESOURCES), vol. 27, no. 6 , pp. 185–199, 2021, [Online]. Available: https://sid.ir/paper/958255/en

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