Fuzzy Modeling of Soil Water Distribution Using Buried Porous Clay Capsule Irrigation from a Subsurface Point Source

2022

Preprint

Self Cite

Clay capsule is one of the porous pipes in sub irrigation system that can release water in near root zone. This paper has attempted to improve the physical and hydraulic properties of clay capsules based on organic matter percent changes in the raw materials. Raw material used for making clay capsules is obtained from calcareous soil of Nasr Abad village of Gorgan, Iran. The ratio of rice bran to calcareous soil as improving hydraulic properties was 1:2, 1:5, 1: 10, 1:15 and 1:20 (kg of rice bran to kg of air-dried soil). The produced clay capsules were named G2, G5, G10, G15 and G20 respectively. The water discharge and soil water distribution of clay capsules were measured at 10, 25, 50, 80, 100 kPa of hydrostatic pressures by discharge-pressure automation instrument. The results showed that a significant relationship between discharges of porous clay capsules and organic matter mixed in raw material. Also, the results show that with increasing organic matter percentage in clay capsule component, the discharge of clay capsules increased. The relationship between discharges of G20 with hydrostatic pressure is linear and in G2, G5, G10, and G15, this relationship becomes non-linear. Meanwhile, soil wetting shape followed a spherical trend due to the slow seepage of clay capsules. But the soil wetting shapes in G15 and G20 was completely spherical, and in G10, G5 and G2 trend to ellipsoid vertically. Finally this is of significance for irrigating plants in arid and semi-arid regions.

Section: Measurement Of Clay Capsule Discharge In Laboratorymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Optimizing the Hydraulic Properties of Porous Clay Capsules for Providing Soil Moisture in Subsurface Irrigation System

2022

Preprint

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“…As well, it is one of the most important e cient traditional methods for small farms in many arid and semi-arid regions. This system has been used for the sub-irrigation of fruits and vegetables for the last 1000 years in many small-scale dry lands of the world (Bainbridge, 2001;; Bahrami et al, 2010;Ghorbani Vaghei et al, 2015) and also this method of irrigation is becoming increasingly common especially in the developed nations as a way of watering and fertilizing greenhouse crops (Das Gupta et al, 2009). Buried clay pot irrigation is infrequently used in dry lands of India, Iran, Pakistan, the Middle East and Latin America where the rainfall is less than 500 mm per year (Bainbridge, 2001;Ashra et al, 2002;Qiasheng et al, 2007: Bahrami et reported that in sub irrigation with porous clay pipe, the radius of the wetted zone increased as a result of increased system water pressure.…”

Section: Introductionmentioning

confidence: 99%

Optimizing Soil Moisture in Subsurface Irrigation System Based on Porous Clay Capsule Technique

2023

Water Resour Manage

Self Cite

A clay capsule is one of the porous pipes in a sub-irrigation system that can release water near the root zone. This paper has attempted to improve the physical and hydraulic properties of clay capsules based on changing the percentage of organic matter in the raw materials. The raw material used for making clay capsules is obtained from the calcareous soil of Nasr Abad village of Gorgan, Iran. The ratio of rice bran to calcareous soil as improving hydraulic properties was 1:2, 1:5, 1: 10, 1:15, and 1:20 (kg of rice bran to kg of air-dried soil). The produced clay capsules were named G2, G5, G10, G15, and G20 respectively. The water discharge and soil water distribution of clay capsules were measured at 10, 25, 50, 80, and 100 kPa of hydrostatic pressures by a discharge-pressure automation instrument. The results showed a signi cant relationship between discharges of porous clay capsules and organic matter mixed with raw material. Also, the results show that with increasing organic matter percentage in the clay capsule component, the discharge of clay capsules increased. The relationship between discharges of G10, G15, and G20 with hydrostatic pressure is linear, and in G2, and G5, this relationship becomes nonlinear. Meanwhile, the soil wetting shape followed a spherical trend due to the slow seepage of clay capsules. But the soil wetting shapes in G10, G15, and G20 were completely spherical, and in G5 and G2 trended to ellipsoid vertically. Finally, this is of signi cance for irrigating plants in arid and semi-arid regions. Highlights-Introduction of sub-irrigation method that apply for irrigating plants in arid and semi-arid regions.-Introduction of buried porous clay capsule that can release water in near root zone.-Introduction of a solution to reduce water losses for many orchards at arid and semi-arid regions -Introduction of the soil wetness by clay capsule types for installing into the soil.

Optimizing soil moisture in subsurface irrigation system based on porous clay capsule technique

2022

Preprint

Self Cite

A clay capsule is one of the porous pipes in a sub-irrigation system that can release water near the root zone. This paper has attempted to improve the physical and hydraulic properties of clay capsules based on changing the percentage of organic matter in the raw materials. The raw material used for making clay capsules is obtained from the calcareous soil of Nasr Abad village of Gorgan, Iran. The ratio of rice bran to calcareous soil as improving hydraulic properties was 1:2, 1:5, 1: 10, 1:15, and 1:20 (kg of rice bran to kg of air-dried soil). The produced clay capsules were named G2, G5, G10, G15, and G20 respectively. The water discharge and soil water distribution of clay capsules were measured at 10, 25, 50, 80, and 100 kPa of hydrostatic pressures by a discharge-pressure automation instrument. The results showed a significant relationship between discharges of porous clay capsules and organic matter mixed with raw material. Also, the results show that with increasing organic matter percentage in the clay capsule component, the discharge of clay capsules increased. The relationship between discharges of G10, G15, and G20 with hydrostatic pressure is linear, and in G2, and G5, this relationship becomes non-linear. Meanwhile, the soil wetting shape followed a spherical trend due to the slow seepage of clay capsules. But the soil wetting shapes in G10, G15, and G20 were completely spherical, and in G5 and G2 trended to ellipsoid vertically. Finally, this is of significance for irrigating plants in arid and semi-arid regions.