WO2017035410A1

WO2017035410A1 - Liquid containment and focus for subterranean capillary irrigation

Info

Publication number: WO2017035410A1
Application number: PCT/US2016/048791
Authority: WO
Inventors: Joseph Dominic GALLEGOS
Original assignee: Gallegos Joseph Dominic
Priority date: 2015-08-27
Filing date: 2016-08-25
Publication date: 2017-03-02

Abstract

The present invention relates to a subsurface irrigation conduit, installed within any soil type to create a suspended saturated zone at the buried depth. This saturated zone acts as a virtual water table, where water is pulled by capillary properties into areas that plant roots can access. The invented conduit has a minimum of two channels that run parallel to each other, one is a liquid camber channel to contain water so it may flow the full distance of the conduit with no obstructions. The second channel is a saturated channel, that is exposed to the surrounding soil from above, so when buried the saturated channel is filled with a surrounding soil media. Water communicates between the two types of said channels through a plurality of seep holes place on a shared seep hole wall between said channels. Irrigation conduit can also be used to drain a given area.

Description

TITLE OF THE INVENTION

Inventor: Joseph Dominic Gallegos, United States Of American Citizen, 371 Carroll Park East, Long Beach, California, 90814: Invention Title: "Liquid containment and focus for subterranean capillary irrigation"

DESCRIPTION

Technical Field of the invention

This invention is related to irrigation and more specifically to subirrigation for growing plants. The irrigation conduit apparatus creates a virtual water table at the buried depth of the irrigation conduit apparatus, thus creating a moisture zone that is idea for plant growth. Current state of irrigation technology is focus on surface irrigation that is subject to surface evaporation.

Background Art, Description of the Related Art including information disclosed under 37 CFR 1 .97 and 37 CFR 1 .98:

In past years' water has always been abundant. There was little need for prior art to focus on irrigation efficiently when abundance of water was available. Most prior art focus on irrigation distribution methods. Water is now in demand and environment changes such as droughts globally have put additional stresses on water sources. Environmental changes have also increase perception in other areas and high perception in short periods causing flooding. Irrigation as become a complex unknown for some areas where environmental changes have cause too much water occurs due to high perception or at times to too little water is available due to drought conditions.

During drought periods often ground water is pump to the surface for irrigation, causing the local water table to drop to deeps never seen before, thus requiring additional cost to dig deeper for ground water and higher energy cost to pump water from deeper depths.

A significate portion of the water used today is for irrigation of landscape and agricultural lands. Studies show that 80% of all water use is for agricultural applications and in urban areas 50% of the water use is for landscape irrigation. Small increase in efficiency for either agriculture or landscape have significate water savings potential.

In general plant irrigation has mainly been performed on the soil surface where the irrigated water is subject to evaporation lost. Great amount of research has been performed to determine how to measure the total amount of water to apply on the surface for healthy plant growth. This volume of water to apply is express as the Evapotranspiration factor, and is express in the equation ETo where Έ " is for Evaporation and accounts for 25% to 60% of the water applied, "T" is for

Transpiration and "o" is the specific plant species needs above or below the base line crop. One of the main purposes of the present invention is to eliminate the Έ" (Evaporation) in the ETo equation. The invented conduit apparatus accomplishes this by applying irrigated water below the surface at the root level and away from the effect of surface evaporation. The new equation for plant water needs can then change to the equation of To, where "T" is transpiration of the plant leaves and "o" is the specific plant needs above or below the base line crop. The water efficiency savings for subsurface irrigation use is 25% to 50% over current methods, depending on the local environment and crop.

Other disadvantages of prior art surface irrigation, that the invented conduit apparatus solves in part include: 1 ) Avoiding irrigated surface runoff into streams, rivers, lakes and oceans. Irrigation runoff often carries, soil, fertilizers, pesticides and other chemicals. 2) Weed control, by avoiding surface watering weeds or weed seeds that can germinate 3) Surface moisture that increase dew on leaves and in kind increase fungus disease.

By cutting surface irrigation the invented conduit apparatus cuts the need for chemicals use for both weed control and fungus control. One of the greatest cost in the organic farming movement is the labor of removing weeds. The daily labor involved of weed removal puts many organic farmers in low profit margins.

Herbicides and fungicides are both costly and highly dangerous chemicals, any ability to cut the use of both help farmers manage their crops with less labor and less cost.

Sub-irrigation that is in current use today is usually drip tape and/or drip tube. I have found that both need to operate under water pressure which increase energy cost and limit use to where power is available. I have also found that both are subject to a number of problems such as: 1 ) accidental puncher damage from human error or animals during the natural course of operation, 2) control water emitters are small and thus subject to clogging by plant root intrusion, soil or mineral buildup, 3) need for costly filters, and an inherent complexity of filters requires increase labor and energy cost, 4) both drip tape and drip tube emit water openly to the surrounding soil with no containment, thus some water is lost to deep percolation, 5) the open distribution of water cause root intrusion into the emitters, since the area of water distribution is an idea mixture of oxygen and water, 5) life expectancy is only 1 to 2 years for drip tape, thus increasing cost of operations and 6) Limited use for direct greywater use due to clogging of emitter from high percentage foreign material in greywater, such as soup scum, detergents, hair, lint and biological matter.

Many government mandates require greywater irrigation needs to avoid direct human contact and should be applied subsurface. The current application of greywater irrigation is mainly limited to catchment cisterns to feed trees or bushes. This is relatively a new field so prior art has not focus on applying untreated greywater irrigation for turf or large irrigation areas.

Other sub-irrigation apparatus discussed in prior art Sheldrake et. al (U.S. Pat. No. US 7681356 B2) and Ohlin (U.S. Pat. No. 8491223 B2) both address sub irrigation and the use of capillary action to moisten the surrounding subsoil through the use of wicking fabric. I have found that the fabric wicks will eventually need to be replace before the end of life on the liquid transport conduit that supports the wicks on each of these arts (U.S. Pat. No 20080035753 A1 and U.S. Pat. No. 8491223 B2). Also both arts do not take into account water molecules adhesion and cohesion

differential between the fabric wicks and the surrounding soil. These adhesion and cohesion differential can delay or even prevent water from moving from the fabric wick into the surrounding soil. This same effect happens when a potted plant grown in a growing media is placed in soil. The plant shortly dies due to lack of water even if the surrounding area is wet. What has happened, is the water adhesion and cohesion is greater in the native soil than the potted soil media preventing the transfer of water molecules. This is discussed in detail on a video from Gemblous Agro-Bio Tech call "Water Movement in the soil", posted on YouTube. Thus one or more aspects of the irrigation apparatus conduit is no additional attachments or parts that need replacement over time. Other advantages of one or more aspects are that the irrigation conduit apparatus eliminates any adhesion and cohesion differential.

In prior art Nalbandian et al. (U.S. Pat. No. 6,237,283) describes a water reservoir and subsurface irrigation device with an open trough and the formula for a special define wicking soil for efficient capillary action. The device is modular in nature and is effective in a potted planter and goes in great detail to compare U.S. Pat. No 6,237,283 against existing planter irrigation technology. I found that U.S . Pat. No. 6,237,283 is not efficient or economical to use in an agricultural or large open sports field due to it modular design. A sports field would require placing 100's of individual prior art units in an open field. To operate these units would be technical challenge for water distribution, requiring multiple inlet tubes extending to the surface. In addition, the need of a specified capillary media described in the art would be economically unachievable. Current soil would have to be removed from the area and then backfilled with the special makeup. A prohibitive costly operation when irrigating any large area. Thus several advantage of one or more aspects are that the irrigation conduit apparatus is cost effective for large areas and any type of soil.

Besides evaporation, the current irrigation practice has one additional problem that is water lost to deep percolation. Conventional irrigation compensates for uneven water distribution by over applying water. As discussed much of the water is lost to evaporation, some is lost to runoff and the addition volume of water is lost to deep percolation beyond a depth that plant roots can use. Deep percolation also increase soil leaching of harmful chemicals such as fertilizers, pesticides and other chemicals into the ground water, thus causing groundwater contamination. Thus several advantages of one or more aspects of the irrigation conduit apparatus are to prevent deep percolation.

In prior art, Hollan (U.S. Pat. No. 9, 161 ,496 B2) and in a project done for United States Department of Agriculture Project number MICL02340 2014-2019, perform by Michigan State University called Soil Water Retention Technology. Both of these prior arts show that subsurface water holding capability can be an effective tool to water conservation. The Michigan State study has shown that Water Retention Technology can increase crop yields by 170%. Both prior arts are limited in that they capture water as it percolates through the soil after being applied on the surface either by rain or irrigation. The applied water is still subject to evaporation and during a drought year no water is available for capture, thus the capturing technology can go unused for long periods. In addition, both do not address 1 ) over watering drainage during high perception periods, 2) changing water tables and 3) placement in areas of elevation contours such as large landscapes or agricultural lands. Both technologies are not design to prevent water from flowing to the lowest point and leaving the higher sections dry. The MICLO2340 2014-2019 agricultural project is mainly focus on water retention membranes for highly permeable sandy soils.

DISCLOSURE OF INVENTION

The present invention is a new way to approach irrigation that one or more aspects increase water efficiently, increase optimal growing conditions for higher crop yields, prevents water runoff, prevents water lost to deep percolation, decrees aquifer contamination, decrees weed growth and decrees fungi growth.

BRIEF DESCRIPTION OF THE SEVERAL VIEWS OF THE DRAWING(S)

These and other feature and advantage of the present invention will be better understood by reference to the following detail description when considered in conjunction with the accompanying drawings, wherein: FIG 1 : Is a perspective view of one embodiment of the invention showing all the key elements of the irrigation conduit apparatus.

FIG 2: Is a side full length cross-section of the FIG. 1 embodiment showing the different shapes of seep holes along the shared seep hole wall of the liquid chamber conduit and the soil retention saturation channel.

FIG 3: Is a front cross-section of the FIG. 1 embodiment showing three distinct channels, two for the liquid chamber channels to transport water and the center saturated channel that confines the saturated soil.

FIG 4: Is a front cross section of an alternative embodiment showing the irrigated conduit apparatus utilizing one liquid chamber channel for water flow and one saturated channel for soil saturation.

FIG 5: Is a front cross section of an alternative embodiment showing the irrigation conduit apparatus utilizing one "U" shape wrap around liquid chamber channel for water flow and one center saturated channel for soil saturation confinement.

FIG 6: Is a front cross-section of an alternative embodiment showing that the irrigation conduit apparatus does not need to be round in shape. Two liquid chamber channels with one center saturated channel for soil saturation confinement.

FIG 7: Is the front cross section of the irrigation conduit apparatus in use

underground for irrigation.

FIG 8: Is multiple segments connected in series of the irrigation conduit apparatus in use for underground irrigation.

FIG 9: Is a frontal cross cut section of the irrigation conduit apparatus showing the seep holes and the backfilled native soil into the saturated channel.

FIG 10. Is a cross section of an open field crop or turf area, showing the irrigation conduit apparatus place in parallel to provide even subsurface irrigation coverage by creating a blanket moisture zone across the field FIG. 1 1 . Is a cross section of an open orchard crop, showing the irrigation conduit apparatus place in parallel between the row of trees to provide subsurface irrigation.

BEST MODE OF CARRYING OUT INVENTION

The present invention relates to an irrigation conduit apparatus and method of creating a virtual water table at a desire depth that can be many feet above the natural water table. The irrigation conduit apparatus can also be used as a greywater irrigation system or a drainage pipe when required.

FIG. 1 shows a perspective view of one embodiment of the irrigation conduit apparatus. Which is installed below the surface FIG. 7, 8, 9, 10 and 11 within any surrounding soil type to create a saturated zone 5 within a saturated channel 2 at the buried depth of the irrigation conduit apparatus. Whereby creating a moisture zone 6 starting at the top of the saturated zone 5 and continuing several inches above said saturated zone FIG. 7.

FIG. 2 is a cutaway view along the length of the irrigation conduit apparatus in FIG. 1 , showing a plurality of seep holes 8 size types along a shared seep hole wall 3.

FIG. 3 is a front view of the irrigation conduit apparatus embodiment in FIG. 1 showing the full profile of the different channels. FIG. 3 embodiment shows a liquid chamber channel 1 on each side of the conduit, that allow liquid to flow the full distance of the irrigation conduit with no obstructions. The center channel is the saturated channel 2, that is exposed at the top to allow water capillary movement upward to transform the dry soil above into said moisture zone 6 plume. The shared seep hole walls 3 have the plurality of seep holes 8 to allow water communication between the liquid chamber channels 1 and the saturated channel 2. The constant flow of water into the saturated channel 2 transforms the dry soil in the saturated channel 2 to the saturated zone 5. The saturated zone 5 is technical a virtual water table that is closer to the surface than the natural occurring water table. For maximum effectiveness only the local native soil should surround the irrigation conduit apparatus. The irrigation conduit apparatus FIG. 1 can be made with plastic extrusion process or metal extrusion process. An impermeable exterior wall 4 and the shared seep hole wall 3 can vary in thickness, depending on the downward weight load needs above the buried irrigation conduit apparatus.

Length of each irrigation conduit apparatus segment can be customized for each industry. For residential Do It Yourself applications approximate 10 foot or 3-meter length would be idea. 10 foot sections are easy to carry the irrigation conduit apparatus on top of a car. In agricultural applications rolls up to 300 feet or 100 meters are idea for semiautomatic installation in the field. Wall type and thickness of the irrigation conduit apparatus is dependent on the end use industry and

application. For homeowners ridged pipe is idea, but for agriculture a corrugated wall structure or a pliable wall allows for automatic installation of the invented conduit apparatus by current specialize installation farm equipment.

Referring to FIG. 4 and FIG. 5 are both alternative embodiments of the irrigation conduit apparatus, both having a minimum of two channels that run parallel to each other along the full length of the invented irrigation conduit apparatus. At least one channel is dedicated as said liquid chamber channel 1 to allow water to flow along the length of the invented irrigation conduit apparatus with no obstruction. The second channel is said saturated channel 2 running the length of the conduit. Said saturated channel 2 holds the irrigated water like a cup allowing the irrigation water to concentrate till the backfilled soil in said saturated channel 2 has become fully saturated, creating the saturated zone 5 within the area of said saturated channel 2.

Water tables or aquifers are technically defined as saturated zones, so by definition the irrigation conduit apparatus is creating a virtual water table at the depth along the full length of each said saturated zone 5. Said saturated channel 2 contains and concentrates the irrigated water to create a virtual water table is a key useful feature of the irrigation conduit apparatus. Said saturated channel 2 is open at the top to allow the surrounding soil 10 to backfill into the full inside area of said saturated channel FIG 9 when buried. Said saturated channels bottom and wall(s) that are not said shared seep hole wall 3 with the liquid chamber channel 1 are impermeable exterior walls 4, so as to contain the irrigation water FIG. 7 and prevent a deep percolation 9 of the irrigation water to occur below the buried irrigation conduit apparatus FIG 7. By only having the top of said saturated channel 2 open to the surrounding soil 10, the water adhesion and cohesion forces are focuses toward upward capillary movement. Whereby creating said moisture zone 6 many inches above the saturated zone FIG 7. The two channels types work together by allowing water to pass from the liquid chamber channel 1 to said saturated channel 2 through the plurality of seep holes 8 that are placed along the shared seep hole wall 3 between said saturated channel 2 and the liquid chamber channel 1. The plurality of seep holes 8 can be circular or other shape such as oblong or rectangle FIG 2. The plurality of seep holes 8 size is dependent on the local water quality and soil types. The guidelines are that plurality of seep holes 8 size is large to prevent clogging and in some cases to allow bidirectional water flow so the irrigation conduit apparatus can be used for drainage. When greywater is used in the irrigation conduit

apparatus, the plurality of seep holes 8 size is recommended to be ¼ inch or larger to prevent soap scum buildup or clogging from lint and other material in the greywater. Spacing of the plurality of seep holes 8 range depending on the soil type. Clayish soils require closer spacing such as one to three inches, and sandy soils can be as far as three feet. The plurality of seeping holes 8 are always open FIG. 9, to allowing continuous communications of water between the liquid chamber channel and said saturated channel, thus maintaining the saturated soil zone 5 along the full length of said saturated channel 2. The soil in said saturated channel 2 creates enough resistance to allow for the water to flow the full distance of the irrigation conduit apparatus. Any soil that blocks the plurality of seep holes 8 or enters into the liquid channel 1 will not affect the performance since soil is a permeable material that water will pass through.

Referring to FIG. 7 shows roots extending down into the surrounding soil 10 above the irrigation conduit apparatus. The conduit apparatus shows water in the liquid chamber conduits channels 1 , the soil saturated zone 5 created within said saturated channel 2 and the focus water adhesion and cohesion capillary movement creating the moisture zone 6 plume. Since the impermeable exterior wall 4 of the conduit apparatus prevents downward and sideways water migration, the irrigation water is contained and concentrated in said saturated channel 2. The impermeable exterior wall 4 also prevents water loss to deep percolation 9 where the depth is too far below the roots to access. The capillary actions of water adhesion and cohesion from the saturated zone 5 causes the creation of the moisture zone 6 plume above the saturated zone 5 is a key useful benefit of the present invention.

Referring to FIG. 7 shows a soil evaporation zone 15 that can be several inches deep and is subject to unwanted surface evaporation 11. The buried depth of the irrigation conduit should be deep enough to avoid said soil evaporation zone 15. Keeping said soil evaporation zone 15 dry has the additional benefit of avoiding weed germination and/or extra moisture around plants that can cause fungus growth. Different soil types will respond differently, so the soil evaporation zone 15 depth will be conditional on the native soil type at the irrigation conduits apparatus installation site.

Referring to FIG. 8, the invented conduit apparatus can be connected in series end on end 13 to create any desirable length in excess of 4 miles long if needed. The invented conduit apparatus is intended to operate by gravity flow or very low water pressure. The liner design of the invented conduit apparatus allows for installation at a zero grade level over long distances with existing technology. When installed at zero grade water will flow across the full length of the irrigation conduit apparatus evenly. The zero grade prevents water from puddling within said saturated channel 2 or to overflow at low points along the length of the irrigation conduit apparatus.

Lengths of the irrigations conduit apparatus over 50 feet can be preform with agricultural equipment design to install drain pipe within centimeters of elevation over 5 miles' lengths, such equipment is standard in the agricultural drainage industry. Referring to FIG. 10 large field irrigation is performed by placing the invented conduit apparatus lengths parallel to each other FIG. 10 as a means to create

interconnected moisture zones 6. Interconnected moisture zones as a means of forming an interconnected blanketed moisture zone across the field width FIG. 10 . Irrigation times can be frequent as a mean to create a height of the interconnected blanketed moisture zone or reverse, irrigation cycles can be spread out over time as a mean of creating a deeper interconnected blanketed moisture zone. Each lateral length is feed water by connected to standard irrigation headend pipe and each lateral is terminated by either a cap or a drain end pip.

The parallel distance FIG. 10 between each series lateral will be determine by the type of soil and the plants being irrigated. For row crops spacing is close and approximately three feet on center. FIG. 11 is an example of orchard spacing. The irrigation conduit apparatus can be place in the center of each row with a spacing of nine feet up to twenty-seven feet on center, depending on orchard row spacing. For turf applications, the spacing can range from two feet up to four feet on center depending on soil type.

Referring to FIG. 4, FIG. 5 and FIG. 6 each showing a different embodiment shapes and channel configuration of the present invention. The diameter, width and high of each embodiment is dependent on the irrigated application and manufacturing extrusion process. For Landscape applications the diameter of the irrigation conduit apparatus is within three and half inches in width and for agriculture applications this width is above three and half inches.

Referring to FIG. 4 the invented conduit apparatus is extruded to have one said liquid chamber channel 1 , and one said saturated channel 2 for saturated soil containment and one said shared seep hole wall 3.

Referring to FIG. 5 the irrigation conduit apparatus is extruded to have one liquid chamber channel 1 in a wraparound "U" design so as to give said saturated channel 2, two shared seep hole walls 3 to place the plurality of seep holes 8 in, only the shared seep hole walls 3 have the plurality of seep holes 8 to allow water to communicate between the liquid chamber channel 1 and the sutured channels 2, all other external areas are impermeable exterior walls 4 to contain the water and prevent deep percolation 9 or sideway water adhesion and cohesion.

Referring to FIG. 6 the irrigated conduit apparatus is extruded in a rectangular shape to allow a wider said saturated channel 2 and greater water flow along the liquid chamber channels 1 , the shared seep hole walls 3 are on both sides with a plurality of seep holes 8 in each shared seep hole wall 3. All other walls are considered impermeable exterior walls 4.

Some embodiments of the irrigation conduit apparatus can have the same outside diameter as standard PVC or ABS pipe so that standard PVC and ABS couplers can be used to interconnected the irrigation conduit apparatus in series 13 for the desire lengths or to connect to existing irrigation supply lines. Using standard PVC and ABS diameter sizes allows for easy adapting to existing water infrastructure sources.

Referring to FIG. 9 The top of said saturated channels 2 is open at the top, to allow direct back fill of the surrounding soil 10 into said saturated channel 2. The soil in said saturated channel 2 and the soil above the saturated channel 2 should be the same for greater capillary movement. Water molecules in the saturated channel 2 will move upward into the above surrounding soil 10 through water molecule adhesion and cohesion properties whereby FIG. 7 creating a moisture zone 6 plume many inches in height above the irrigation conduit apparatus. The moisture zone 6 plume will have a mixture of oxygen and water at ideal conditions for plant roots to uptake water. Plant roots will avoid the saturated zone 5 due to lack of oxygen, thus preventing root intrusion into the irrigation conduit apparatus. Any soil that enters into the irrigation conduit apparatus liquid chamber channel 1 can be flush out

seasonally.

Referring to FIG 10 and FIG 11 , the invented conduit apparatus can be buried at different depths depending on the plants to irrigate. The deeper the installation the less soil surface evaporation 11. The guidelines are to bury at the plants root zone or up to 24 inches below the root zone FIG 11. Capillary water adhesion and cohesion actions will convey the irrigated water from said saturated zone 5 to a moisture zone 6 plume, which is an area that plants roots can access. Depth will vary depending on the soil types at each installation location.

The irrigation conduit apparatus meets the needs of greywater irrigation by avoiding surface irrigation. Many current government regulations allow for the use of greywater irrigation, but only if the greywater is applied by subsurface irrigation methods. Greywater has a tendency to have non-water elements such as lint, hair, soaps and detergents that can cause clogging with traditional subsurface irrigation micro emitters. The irrigation conduit apparatus avoids this with the use of the plurality of seep holes 8 that are large in diameter or length.

In yet a further embodiment, the invention is used as a means of a multipurpose irrigation conduit apparatus to provide: 1 ) field drainage during wet periods, 2) drainage of high water table areas, 3) water retention times of surface percolation water and 4) subsurface irrigation system during dry periods. The plurality of seep holes 8 will allow bidirectional communication of liquid between the liquid chamber channel 1 and said saturated channel 2. The irrigation conduit apparatus system placement in the field should be at the desire water table depth. If used as a mean for drainage an additional geotextile material can be place over the seep holes as a mean to prevent soil eroding into the plurality of seep holes.

In a further embodiment, the irrigation conduit is used as a means to cut weed growth by denying weeds moisture on the surface 7 or water in the soil evaporation zone 15. Weed seeds are also denying the ability to germinate by means of avoiding moisture on the surface 7 or water in the soil evaporation zone 15.

If a further embodiment the irrigation conduit is used as a means to prevent fungi growth on plants by eliminating surface water and its contribution to cause dewing on leaves.

While the invention has been described in detail with particular reference to exemplary embodiments thereof, the exemplary embodiments describe herein are not intended to be exhaustive or to limit the scope of the invention to the exact forms disclosed. Persons skilled in the art and technology to which this invention pertains will appreciate that alterations and changes in the described structures and methods of assembly and operation can be practiced without meaningfully departing from the principles, spirit, and scope of this invention, as set forth in the following claims. Although relative terms such as "zone", "exterior", "shared", "soil", "large" and similar terms have been used baring to describe a spatial relationship of one element to another, it is understood that these terms are intended to encompass different orientations of the various elements and components of the device in addition to the orientation depicted in the figures. Moreover, the figures contained in this application are not necessary drawn to scale.

Claims

CLAIMS Having thus fully described my invention what I claim as new and desire to secure by patent is:

1. An subsurface irrigation conduit apparatus comprising of, said irrigation conduit buried deep enough as a mean to avoid soil evaporation zone, said irrigation conduit apparatus with two or more channels running parallel to each other continuously along the full length of the said irrigation conduit apparatus, at least one said channel along the length of the irrigation conduit apparatus that is designated as a liquid chamber channel as a means to allow liquid to pass freely along the full length of said irrigation conduit apparatus, at least one said channel running parallel to said liquid chamber channel along the full length of the irrigation conduit apparatus, that acts as a saturated channel as a means of holding water saturated soil, said saturated channel is open at the top as a means to allow backfill soil to fill into the full cavity of said saturated channel, said saturated channel as a mean of creating a saturated zone within said saturated channel walls, said shared seep hole walls is sandwich between said liquid chamber channel and said saturated channel, a plurality of seep holes along the length of said shared seep hole wall, said plurality of seep holes large enough as a means to allow liquid communication between said liquid chamber and said saturated channel, a impermeable exterior wall as a means to prevent liquid from seeping below the irrigation conduit apparatus, whereby the soil in said saturated channel to become fully saturated as a means of creating a saturated zone thus causing a moisture zone plume above the said saturated zone that is ideal for plant growth.

2. The irrigation conduit apparatus of claim 1 , wherein buried below the soil evaporation 2one as a means to prevent water lost to surface evaporation.

3. The irrigation conduit apparatus of claim 1 , wherein is place in parallel segments to each other as a means to provide an interconnected blanketed moisture zone across a field.

4. The irrigations conduit apparatus of claim 1 , wherein is a means to avoid human contact with greywater irrigation.

5. The irrigation conduit apparatus of claim 1 , wherein is a means for distributed greywater irrigation.

6. The irrigation conduit apparatus of claim 1, wherein is a means for cutting weed growth.

7. A method for creating a virtual water table at a desire depth, comprising:

(a) a subsurface irrigation conduit apparatus device buried at the desire depth of said virtual water table,

(b) said irrigation conduit apparatus connected in series as a mean to reach desire lengths of the desire said virtual water table,

( c) adding water to the irrigation conduit as a means of transforming the soil within the said saturated channel to a saturated zone,

(d) said saturated zone as a mean to create a moisture zone,

(e ) said moisture zone as a mean for plant irrigation,

Whereby creating a saturated zone as a means of creating a virtual water table at the buried depth of the irrigation conduit apparatus device.

8. The method of creating a virtual water table at a desire depth of claim 6, wherein buried device below the soil evaporation zone as a means to prevent water lost to surface evaporation.

9. The method of creating a virtual water table at a desire depth of claim 6, wherein is place in parallel segments to each other as a means to provide an Interconnected blanketed moisture zone across a field.

10. The method of creating a virtual water table at a desire depth of claim 6, wherein is a means to avoid human contact with greywater irrigation.

11. The method of creating a virtual water table at a desire depth of claim 6, wherein is a means for distributed greywater irrigation,

12. The method of creating a virtual water table at a desire depth of claim 6, wherein is a means to cut weed growth.

13. A multipurpose irrigation conduit apparatus for irrigation, water retention and drainage, said irrigation conduit place below ground as a means to establish a virtual water table level, said irrigation conduit apparatus with at least one saturation channel as a means to maintain a saturated zone, said saturation channel with a open top expose to a surrounding soil media as a means to allow direct

communication between the soil in said saturated channel and the surrounding soil,

said saturation channel as a means to retain water to create a saturated zone, said saturation channel as a means to capture and retain surface water percolation, said saturation channel as a means to funnel excess surface percolation water to a liquid chamber channel or channels, said saturation channel as a means to hold irrigation water, at least one said liquid chamber channel as a means to transport water to and from the irrigation area, at least one said saturation channel running parallel with at least one said liquid chamber channel the full length of the irrigation conduit, a shared seep hole wall sandwich between said saturation chamber channel and liquid chamber channel, a plurality of seep holes place on the shared seep hole wall as a means to allow liquid communication between said saturation channel and said liquid chamber channel, said plurality of seep holes large in size as a means to allow obstruction liquid communication between said saturation channel and said liquid chamber channel, a impermeable exterior wall as a means to retain water at the buried depth of the irrigation conduit apparatus, whereby said irrigation conduit apparatus as a mean to manage environmental changes affecting the irrigation area during dry and wet period.

14. The said multipurpose irrigation conduit apparatus of claim 11 , wherein avoids human contact when in use as a mean of using greywater during irrigation.