hoop house drainage & water supply - purdue university · hoop house drainage & water...
TRANSCRIPT
![Page 1: Hoop house drainage & water supply - Purdue University · Hoop house drainage & water supply Lyndon Kelley MSU Extension / Purdue University Irrigation Management Agent 269-467–5511,](https://reader031.vdocuments.us/reader031/viewer/2022030113/5ae40d667f8b9a595d8f4254/html5/thumbnails/1.jpg)
Hoop house drainage & water supply
Lyndon Kelley MSU Extension / Purdue University Irrigation Management Agent
269-467–5511, cell 269-535-0343, [email protected] https://engineering.purdue.edu/ABE/Engagement/Irrigation
![Page 2: Hoop house drainage & water supply - Purdue University · Hoop house drainage & water supply Lyndon Kelley MSU Extension / Purdue University Irrigation Management Agent 269-467–5511,](https://reader031.vdocuments.us/reader031/viewer/2022030113/5ae40d667f8b9a595d8f4254/html5/thumbnails/2.jpg)
Proper drainage is essential • The impermeable footprint of the tunnel roof creates a
concentration of rain (and snow) along the edges.
• Having a slope, or shallow trench along the edges will help keep water from entering through the sides.
• Aligning the long-axis on a very slight slope will also help with drainage and air movement. • Six inch or greater height above surroundings >6”
Slight slope
![Page 3: Hoop house drainage & water supply - Purdue University · Hoop house drainage & water supply Lyndon Kelley MSU Extension / Purdue University Irrigation Management Agent 269-467–5511,](https://reader031.vdocuments.us/reader031/viewer/2022030113/5ae40d667f8b9a595d8f4254/html5/thumbnails/3.jpg)
Drainage is a concern of all hoop house construction.
![Page 4: Hoop house drainage & water supply - Purdue University · Hoop house drainage & water supply Lyndon Kelley MSU Extension / Purdue University Irrigation Management Agent 269-467–5511,](https://reader031.vdocuments.us/reader031/viewer/2022030113/5ae40d667f8b9a595d8f4254/html5/thumbnails/4.jpg)
Improving drainage • Slope to open ditch • Slope to Grass waterway • Surface drain improved drainage
![Page 5: Hoop house drainage & water supply - Purdue University · Hoop house drainage & water supply Lyndon Kelley MSU Extension / Purdue University Irrigation Management Agent 269-467–5511,](https://reader031.vdocuments.us/reader031/viewer/2022030113/5ae40d667f8b9a595d8f4254/html5/thumbnails/5.jpg)
Improving drainage • French Drain • Collect or disperse
![Page 6: Hoop house drainage & water supply - Purdue University · Hoop house drainage & water supply Lyndon Kelley MSU Extension / Purdue University Irrigation Management Agent 269-467–5511,](https://reader031.vdocuments.us/reader031/viewer/2022030113/5ae40d667f8b9a595d8f4254/html5/thumbnails/6.jpg)
Raised beds hoop houses advantages: • Soil warming: Raised beds provide the same soil warming benefits in a hoop house as in the
field. • Best utilization of plastic mulch: Because beds are raised, mulch can be 'wrapped' around
soil profile ensuring a snug fit thus promoting efficient heat transfer. • Ease of harvest: Beds elevate low growing crops reducing back stress during harvest. • Effective soil solarization: Temperature in beds covered with 1-mil clear plastic mulch can
reach 140 degrees F at one inch depth. Six weeks of this treatment during the summer does an excellent job controlling soil borne pathogens. Closing the house increases the effectiveness of solarization.
• Limited freeze protection: Heat radiating from beds moderates temperature around young transplants.
• Site flexibility: Raised beds permit placement of hoop houses on sites with poor soil.
http://www.noble.org/ag/horticulture/hoophouse
![Page 7: Hoop house drainage & water supply - Purdue University · Hoop house drainage & water supply Lyndon Kelley MSU Extension / Purdue University Irrigation Management Agent 269-467–5511,](https://reader031.vdocuments.us/reader031/viewer/2022030113/5ae40d667f8b9a595d8f4254/html5/thumbnails/7.jpg)
https://www.leopold.iastate.edu/sites/default/files/pubs-and-papers/2012-01-rainwater-catchment-high-tunnel-irrigation-use.pdf
Collecting rainfall • Side gutter • Enclosed or lined drain
FarmTek
https://www.leopold.iastate.edu/pubs-and-papers/2012-01-rainwater-catchment-high-tunnel-irrigation-use
![Page 8: Hoop house drainage & water supply - Purdue University · Hoop house drainage & water supply Lyndon Kelley MSU Extension / Purdue University Irrigation Management Agent 269-467–5511,](https://reader031.vdocuments.us/reader031/viewer/2022030113/5ae40d667f8b9a595d8f4254/html5/thumbnails/8.jpg)
A 30’ x 64’ will displace 1200 gallons of water with a 1” rainfall
One inches of rain falling on a 1,000 square foot structure will generate about 600 gallons of rainwater!
1” of water on one square ft. of area = 0.6 of gallon
Annual rainfall 32”-36” Fall 3”- 4”/month Winter 2”- 3”/month Spring 3”- 4”/month Summer 2”- 3”/month
May require change in management
![Page 9: Hoop house drainage & water supply - Purdue University · Hoop house drainage & water supply Lyndon Kelley MSU Extension / Purdue University Irrigation Management Agent 269-467–5511,](https://reader031.vdocuments.us/reader031/viewer/2022030113/5ae40d667f8b9a595d8f4254/html5/thumbnails/9.jpg)
Rain water collection use: • Tank sized to meet normal high use need for a week • Jet pump or lift pump to deliver water to dispersal system • An overflow to adequate drain • Filter system to avoid plugging dispersal system • Alternative water supply for when use is not met by rainfall • Alternative clean water supply for when contamination builds to
unusable levels
![Page 10: Hoop house drainage & water supply - Purdue University · Hoop house drainage & water supply Lyndon Kelley MSU Extension / Purdue University Irrigation Management Agent 269-467–5511,](https://reader031.vdocuments.us/reader031/viewer/2022030113/5ae40d667f8b9a595d8f4254/html5/thumbnails/10.jpg)
Septic tank- about $1 / gallon
Underground storage tank • Below surface making gravity (in) flow an option
from most sources • Water temp cool to reduce bacterial growth • Reduce freezing issues • Pump needed to lift and pressurize water for use • Require an overflow to adequate drain
![Page 11: Hoop house drainage & water supply - Purdue University · Hoop house drainage & water supply Lyndon Kelley MSU Extension / Purdue University Irrigation Management Agent 269-467–5511,](https://reader031.vdocuments.us/reader031/viewer/2022030113/5ae40d667f8b9a595d8f4254/html5/thumbnails/11.jpg)
Septic tank- about $1 / gallon
Storage tank size • 0.25” of Evapotranspiration /day is common (1.75”/week) • 0.30” of E.T. happen for a few days every summer (2.10”/week) • 0.25” of E.T./day = 1050 gallons of water need /1000 sq. ft./week • Eliminating sunlight reduce microbe growth • To reduce microbe and contamination issue avoid storing water more than 2 weeks • Design over flow to rotate stored water • Provide for drainage of over flow
1” of water on one square ft. of area = 0.6 of gallon
![Page 12: Hoop house drainage & water supply - Purdue University · Hoop house drainage & water supply Lyndon Kelley MSU Extension / Purdue University Irrigation Management Agent 269-467–5511,](https://reader031.vdocuments.us/reader031/viewer/2022030113/5ae40d667f8b9a595d8f4254/html5/thumbnails/12.jpg)
• Sewage lift pumps to raised tank • Sewage lift pumps with pressure regulator
• Jet pumps with pressure tank
12 volt option Pressure
regulator
• Requires screened intake pipe down into tank or screened bung at bottom of tank
• Self draining option
![Page 13: Hoop house drainage & water supply - Purdue University · Hoop house drainage & water supply Lyndon Kelley MSU Extension / Purdue University Irrigation Management Agent 269-467–5511,](https://reader031.vdocuments.us/reader031/viewer/2022030113/5ae40d667f8b9a595d8f4254/html5/thumbnails/13.jpg)
A few reason to avoid water collection for irrigation: • Unless you direct discharge rain water to a creek/ditch there is no
net savings of water to your water shed. • Collected water has risk of plant pathogens • Collected water has human health risk • It is very hard to meet GAC requirements collected water • Much greater filtering and cleaning requirement for drip system • In most situations ground water is available in needed quantities • Connection to existing water system or dedicated well is often
less expensive and more dependable.
![Page 14: Hoop house drainage & water supply - Purdue University · Hoop house drainage & water supply Lyndon Kelley MSU Extension / Purdue University Irrigation Management Agent 269-467–5511,](https://reader031.vdocuments.us/reader031/viewer/2022030113/5ae40d667f8b9a595d8f4254/html5/thumbnails/14.jpg)
Quantity Needed
Field Scale -Maximum water use for most crops is .27 - .32 in./day • 3 gal/minute/acre pump capacity = 1”/week • 5 gal/minute/acre pump capacity = .25 in./day • 7 gal/minute/acre pump capacity =.33 in./day, 1”every 3 days • 500 gal/minute pump can provide 1” every 4 days on 100 acres
Small Scale - Application time in hour for 1000 ft. sq. Gallons /minute
Hour to apply 1"on 1000 /. sq.
Hour to apply 0.25"on 1000 ft. sq.
Hour to apply 0.10"on 1000 ft. sq.
1 10.39 2.60 1.04
2 5.19 1.30 0.52
3 3.46 0.87 0.35
4 2.60 0.65 0.26
5 2.08 0.52 0.21
6 1.73 0.43 0.17
7 1.48 0.37 0.15
8 1.30 0.32 0.13
9 1.15 0.29 0.12 10 1.04 0.26 0.10
1” on 1000 ft. sq. = 623 gallons
![Page 15: Hoop house drainage & water supply - Purdue University · Hoop house drainage & water supply Lyndon Kelley MSU Extension / Purdue University Irrigation Management Agent 269-467–5511,](https://reader031.vdocuments.us/reader031/viewer/2022030113/5ae40d667f8b9a595d8f4254/html5/thumbnails/15.jpg)
Private Water Systems Handbook Contents: Planning for Water Use Water Sources: Wells Maintaining Pressure in a Private Water System Water Distribution Water Quality and Testing Water Treatment Water Protection Water Systems Maintenance Calendar Pumps Collection and Storage: Catchments, Cisterns, Ponds, and Springs
http://mtngrv.missouristate.edu/Publications/Drip_Irrigation_&_Watering_Web_Links.pdf Trickle Irrigation in the Eastern United States NRAES-4, $6
![Page 16: Hoop house drainage & water supply - Purdue University · Hoop house drainage & water supply Lyndon Kelley MSU Extension / Purdue University Irrigation Management Agent 269-467–5511,](https://reader031.vdocuments.us/reader031/viewer/2022030113/5ae40d667f8b9a595d8f4254/html5/thumbnails/16.jpg)
• Frost Free Water Hydrants • Vacuum breaker • Self draining manifold or
manual drain
![Page 17: Hoop house drainage & water supply - Purdue University · Hoop house drainage & water supply Lyndon Kelley MSU Extension / Purdue University Irrigation Management Agent 269-467–5511,](https://reader031.vdocuments.us/reader031/viewer/2022030113/5ae40d667f8b9a595d8f4254/html5/thumbnails/17.jpg)
• Frost Free Water Hydrants • Vacuum breaker • Temporary hose • Be careful of hose end chemical applicator
• Winter water use is minimal • Most water use will be in warm spells
?? unless you are watering to build heat
![Page 18: Hoop house drainage & water supply - Purdue University · Hoop house drainage & water supply Lyndon Kelley MSU Extension / Purdue University Irrigation Management Agent 269-467–5511,](https://reader031.vdocuments.us/reader031/viewer/2022030113/5ae40d667f8b9a595d8f4254/html5/thumbnails/18.jpg)
Home wells are expensive, undependable, inefficient irrigation water source if ran
continuously
If you must: • Isolate the home • Install a continues use pump • Consider a variable frequency drive • Will it require backflow protection? RPZ ? • Consider an accumulation tank
A dedicated Irrigation well maybe a good investment.