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Subsurface Drip Irrigation Resources

Eurodrip USA subsurface drip irrigation can increase yields, save water, energy and money. Growers seek SDI as a solution to irrigate smaller, irregular sized fields and topography which are difficult to effectively irrigate with other methods.

Download the Eurodrip USA Subsurface Drip Irrigation Success Guide

Benefits of Subsurface Drip Irrigation

  • Increased crop yield and quality: SDI provides the most efficient way to deliver water and nutrients directly to the plant roots at the precise time and in the precise quantity the plant needs.
  • Potential savings and/or improved efficiency of water and fertilizers.
  • SDI easily adapts to small and odd shaped parcels, allowing for complete irrigation coverage.
  • SDI provides a drier soil surface, minimizing weed growth and weed germination.
  • SDI eliminates leaf wetness and reduces the relative humidity in the crop canopy which reduces disease pressures.
  • SDI decreases groundwater contamination and leaching of nutrients caused by over irrigation and poor irrigation uniformity.
  • SDI allows the use of recycled water while complying to environmental and public health regulations which prohibit overhead irrigation of certain crops with recycled water.

Frequently Asked Questions About SDI

Which crops perform well with SDI?
SDI works well on all deep rooted crops including: cotton, tomatoes, corn, alfalfa, sugar beets, beans, potatoes and melons.

How deep does the dripline get buried?
The depth of the dripline varies by grower, crop, rotation plans and soil. A common SDI depth range is 12-18” deep.

What impact does emitter spacing have on wetting pattern and uniformity?
Emitter spacing directly impacts the wetting pattern and uniformity. Selecting the correct emitter spacing and flow rate is key to achieving the desired wetted pattern and uniformity.

What type of filtration do I need?
Filtration needs are based on water source and quality. Typical filtration includes a sand media, screen or disc filter to protect the driplines from debris in the water.

What is the longevity of an SDI system?
Maintenance is the key to keep an SDI system clean and running for a very long time. Flushing the system as needed, adjusting water quality and paying attention to what is injected into the system will help extend the life of an SDI system. Use a flow meter and pressure gauges to detect and troubleshoot potential problems.

How often should an SDI system be flushed?
An SDI system requires periodic flushing. Factors determining the frequency of flushing are water quality (surface water or well water) and the types of products that the grower intends to put through the system. Reducing contaminant build up in the driplines is important and can be reduced by acid and/or chlorine injection.

How are rodents repelled?
Pest management is an essential maintenance function throughout the season. Rodents can be detoured by running the system since most rodents do not like a wet environment.

Is there actual water savings by using SDI?
SDI increases the water use efficiency of applied water. If a grower’s goal is to reduce or contain water usage, SDI gives the ability to use available water in a highly efficient manner. If water savings is not a goal, water applied can be efficiently used to push the crop to its maximum potential.

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