A Comparison of Uniformity Measures for Drip Irrigation Systems

Camp, C. R.; Sadler, E. J.; Busscher, W. J.

doi:10.13031/2013.21353

Cited by 57 publications

(12 citation statements)

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“…The values of the heterogeneity differed according to the different droppers used, where it reached its highest values when using Turbo compared to the type of Spiral and GR and for any operating pressures used. The reason for the decrease in the values of the coefficient of variation with an increase in the operating pressure is due to the increase in the rate of water flow inside the field pipes, which leads to a decrease in the effect of adhesion between water molecules and the inner surface in contact with them of the pipe, and thus the decrease in the operating pressure slope along the length of the field pipe, and this in turn works on Reducing the chance of a variation in the discharge of drippers along the tube carrying drippers, and this is consistent with what was found [20,18] Table3. Emission consistency and discharge variance for both types of drips under different operating pressures.…”

Section: The Covariance Ratio Of the Dischargesupporting

confidence: 84%

Hydraulic Performance of a Solar-Powered Drip Irrigation System

Hameed

Jebur

2023

IOP Conf. Ser.: Earth Environ. Sci.

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The effect of emitter type and operating pressure on some hydraulic properties of a solar-powered drip irrigation system, under three types of dots, Turbo, Spiral, and GR, and three operating pressures100, 150 and 200 cm piezo meters were used. The results showed an increase in the values of the emitters discharge rate, emission consistency, and the decrease in the values of the variance ratio in the discharge and the coefficient of manufacturing variation by increasing the operating pressure for the Turbo, Spiral and GR emitters, respectively. The highest values of the droplet discharge rate were 4.98 and 5.56 L.hr-1 for GR and Spiral compared to 7.31L.hr-1 for Turbo type. The results showed that the operational pressures had a significant effect on increasing the rate of discharge and the consistency of the emission and decreasing the values of the rate of synthetic variation and the percentage of variation in the discharge, as the lowest coefficient of variation was 0.0260, 0.0393 and 0.0436 for the Turbo, Spiral and GR emitter, respectively. The use of different operating pressures led to an increase in the rate of discharge as well as the values of consistency of the flow and reduced the percentages of variation in expenses and the coefficient of manufacturing variation of the drippers. The average expenditure values were 3.732, 4.679 and 5.952 liters.hour-1 for operating pressures 100, 150 and 200 cm, respectively. The emission consistency values were also increased and were 91.11, 93.78 and 95.53%, and the coefficient of variation ratios were reduced by 32.13, 17.08 and 8.89% for the aforementioned operating pressures.

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Section: The Covariance Ratio Of the Dischargesupporting

confidence: 84%

Hydraulic Performance of a Solar-Powered Drip Irrigation System

Hameed

Jebur

2023

IOP Conf. Ser.: Earth Environ. Sci.

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“…2.5. Variation of Drainage (Drip Irrigation) [11,12] an equation for calculating the percentage variation in discharge along the lateral line is:-…”

Section: Distribution Uniformitymentioning

confidence: 99%

Effect of Irrigation Systems, Bio-Fertilizers and Polymers on some Growth Characteristics and Potato Production in Desert Soils, Karbala Governorate

Salim

Ati

Ali

2023

IOP Conf. Ser.: Earth Environ. Sci.

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Two field experiments were conducted during the spring season 2020 in Karbala governorate to study the effect of irrigation systems, irrigation intervals, biofertilizers and polymers on some characteristics of vegetative growth and potato production. The results showed that there were significant differences in the values of the average plant height due to the effect of the double interference between the irrigation system and the improvers, The height of potato plant under any irrigation system was superior when adding conditioners compared to the control treatment, as it reached 48.56, 58.00 and 64.33cm when adding polymer, biofertilizer, and polymers+ biofertilizers, respectively compared with the control treatment of 44.64cm in the surface drip irrigation system. While it was 51.74, 58.19 and 64.67cm in the treatments of adding polymer, biofertilizers and polymers+ biofertilizers, respectively, compared with the control treatment 41.51cm under the sprinkler irrigation system, Also, there were significant differences in the values of average root lengths as a result of the effect of the double interference between the irrigation system and the improvers, as the potato root lengths under any irrigation system excelled when adding the improvers compared to the control treatment, It reached 36.29, 41.94 and 49.37cm when adding polymer, biofertilizers and polymers+ biofertilizers, respectively, compared with the control treatment 31.28cm at surface drip irrigation system. While it was 35.94, 40.69 and 48.14cm when adding polymer, biofertilizer, and polymers + biofertilizer, respectively, compared with the control treatment of 30.33cm at the sprinkler irrigation system, There were significant differences in the values of the total yield as a result of the effect of the double interference between the irrigation system and the conditioners, as the total yield of potato tubers under the two irrigation systems exceeded when adding the improvers compared to the control treatment, It reached 25.31, 28.86 and 36.90 μg ha-1 when adding polymer, biofertilizers and polymers + biofertilizers, respectively, compared with the control treatment 17.21 μg ha-1 at the surface drip irrigation system.

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“…In addition to corn, previous research found that increasing the uniformity of irrigation systems direct correlates with the growth of alfalfa and hay yield. The study discussed that the highest alfalfa yield was found in the highest uniformity condition [15]. Therefore, it is important to maintain good uniformity to maximize yield and growth, save water, and reduce nutrient loss to percolation [16] [17].…”

Section: Introductionmentioning

confidence: 99%

Demonstration of Center Pivot Uniformity Evaluation and Retrofit to Improve Water Use Efficiency

Dong¹,

Kelley²,

Anderson³

2023

JWARP

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Agricultural irrigation is a primary user for freshwater withdrawal. Irrigation plays an important role in crop production, as it provides the benefit of reducing the effects of prolonged dryness and erratic precipitation. Center pivot irrigation system is the most common irrigation system in agriculture. As the center pivot irrigation system ages, the system could develop a leaking joint, clogged sprinklers, and physical damage. This can cause areas of non-uniformity that can lead to under-or over-irrigated in some areas of the land, resulting in excess energy use and cost, wasting resources, and environmental impacts. Thus, it is important to evaluate the performance of a center pivot irrigation system regularly to maximize return on investments and minimize wasting resources. This study focuses on evaluating the impacts and benefits of improved center pivot irrigation distribution uniformity by performing distribution uniformity evaluations pre-and post-retrofit. This study also focused on demonstrating an unmanned aerial vehicle (UAV) to assess the performance of the center pivot irrigation system in two irrigated farmlands. The Coefficient of Uniformity (CU), Distribution Uniformity (DU), and Scheduling Coefficient (SC) were calculated based on the catch can test data. The values were utilized to evaluate water and energy savings from the improved coefficients. The team has found that replacing sprinkler packages increased the CU from 78 to 89 and the DU from 77 to 82, and reduced the SC from 1.3 to 1.2 in Field A.

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A Comparison of Uniformity Measures for Drip Irrigation Systems

Cited by 57 publications

References 0 publications

Hydraulic Performance of a Solar-Powered Drip Irrigation System

Hydraulic Performance of a Solar-Powered Drip Irrigation System

Effect of Irrigation Systems, Bio-Fertilizers and Polymers on some Growth Characteristics and Potato Production in Desert Soils, Karbala Governorate

Demonstration of Center Pivot Uniformity Evaluation and Retrofit to Improve Water Use Efficiency

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