Effect of Soil Texture on Water Movement of Porous Ceramic Emitters: A Simulation Study

Cai, Yaohui; Zhao, Xiao Dong; Wu, Pute; Zhang, Lin; Zhu, Delan; Chen, Junying

doi:10.3390/w11010022

Cited by 17 publications

(11 citation statements)

References 25 publications

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“…The results of a study using porous ceramic emitters buried in two types of soil (Cai et al 2018) were similar to those found in this study: the flow rate of the emitter dropped rapidly at the beginning of the test and then gradually decreased until it reached a stable value.…”

Section: Resultssupporting

confidence: 85%

Hydraulic characterization of porous pipes

et al. 2021

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Increased anthropic activity in the environment leads to degradation and increased waste generation that includes tires, which can be used for the manufacture of porous pipes by extrusion for irrigation or aeration. There are no defined methodologies for the hydraulic characterization of porous pipes; in addition, their performance is questionable because the permeability of the wall in contact with water seems to decrease with time. Thus, this study aimed to perform the hydraulic characterization of porous pipes. Experiments were performed to assess the variation in permeability over time, the head loss, the friction factor, and the roughness. Statistical tests were performed to investigate possible significant differences between treatments. The results showed that the permeability varies over time and tends to decrease with each application of water. After a certain period, the permeability tends to become constant, and a stable flux can be determined, being the lowest average permeability and flux values found 0.591 × 10−15 m² 0.109 m³·m−2·s−1. There is variability in the permeability between pipe samples from the same batch as well as variability within the same sample, as indicated by the fact that some samples are similar to each other while others differ when performing a pairwise multiple comparison.

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Section: Resultssupporting

confidence: 85%

Hydraulic characterization of porous pipes

et al. 2021

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“…They concluded that the recommended design parameters depended upon soil type, climate condition, irrigation intensity, and plant type. Another paper conducted by Cai et al (2019a) was to test a ceramic patch in a subsurface irrigation line to control the saturated zone in soil profile created by the Pertanika J. Sci. & Technol.…”

Section: Review Of Literature Of 2015-2019mentioning

confidence: 99%

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2021

JST

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The main purpose of this review is to find the diversity in research studies of subsurface irrigation systems in the past two decades. Two periods of five years were selected to reflect the research studies at the beginning and the end of the comparing periods range. A statistical sorting was used to investigate the distribution of papers according to objectives, types of irrigation systems, research methods, and limitations of the studies. Results showed that the measurements and evaluations were the most presented objectives of the selected papers for both periods. Furthermore, almost 90 percent of the recent papers used multiple research methods, unlike the papers published in the former period which only 56 percent of them used multiple methods. Also, more than 90 percent of the recent papers used a single irrigation system. In conclusion, knowledge of subsurface irrigation systems had been advanced in the former studies mostly by analyzing the measurements and evaluations of the traditional irrigation systems. Unlike the former period, the advancement in knowledge has been produced in the current period by introducing new subsurface irrigation systems and more concentration by the order of measurements, evaluation, and designing, respectively.

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“…The irrigation with porous ceramic emitters works best in clayey soils, while in sandy soils with a low water holding capacity, deep percolation may be produced. Cai et al (2019) even suggest the addition of a water retention agent to prevent deep percolation. This appears rather unrealistic to be used in the context of European agricultural practice.…”

Section: Introductionmentioning

confidence: 99%

Response of “Lollo Bionda” lettuce to drip and porous pipe irrigation

Kunze

Spreer

Beck

et al. 2022

Preprint

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Under the impression of changing rainfall patterns, agriculture in Germany faces increasing drought stress problems and water saving irrigation is gaining importance in the agricultural practice. Porous pipes for subsurface irrigation are an innovative method which is promoted as a water-efficient way to apply irrigation water. In the present study “Ecotubes” porous pipe irrigation was used for irrigation of “Lollo Bionda” lettuce at the University of Weihenstephan-Triesdorf in Southern Germany and compared to state-of-the art drip irrigation both at surface and sub-surface installation. Four treatments were compared during three experimental cycles “summer”, “late summer” and “autumn”: (a) drip irrigation in standard surface installation (control), (b) sub-surface drip irrigation, (c) porous pipes at standard operation and (d) porous pipes at very low pressure. The treatments were compared in terms of crop development, irrigation water applied, yield and water use efficiency (WUE). The highest yields were observed at low pressure irrigation with porous pipes (39.4 t/ha) followed by subsurface drip irrigation (36 t/ha). However, it was shown that the total amount of irrigation water applied, rather than the irrigation method determined the overall yield level. Subsurface irrigation methods had the highest WUE with 50.5 and 49.6 kg/m3 for porous pipes and subsurface drip irrigation, respectively. The study shows that subsurface micro irrigation systems are good for water saving horticultural production in Germany. The use of porous pipes is a good option for subsurface irrigation depending on the technological development in terms of installation and recovery, and the durability of the material.

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Effect of Soil Texture on Water Movement of Porous Ceramic Emitters: A Simulation Study

Cited by 17 publications

References 25 publications

Hydraulic characterization of porous pipes

Hydraulic characterization of porous pipes

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Response of “Lollo Bionda” lettuce to drip and porous pipe irrigation

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