Sdi installer9/4/2023 ![]() Although SDI has many important benefits for modern crop production, many challenges also exist. This publication focuses on SDI systems with lines that are permanently installed below tillage depth (Camp and Lamm, 2003). ![]() Some drip systems have lines that are buried up to eight inches deep, but are retrieved annually and are thus very similar to surface drip systems. Subsurface drip irrigation (SDI) is similar to surface drip irrigation, but it has driplines that are buried beneath the surface. Topics include design criteria pumps filtration chemical injection valves main and submain (header), dripline, and flushing manifold design instrumentation and control systems design implementation installation tips and locating an installer. This publication presents both design and installation considerations to help the grower in a humid area who is considering a SDI system. And fewer systems have been installed in humid regions, so fewer professional installers and less installation equipment are available. Installation is best done when the soil moisture is within an optimal range, which may seriously limit the time when a system may be installed in North Carolina. Irregularly shaped fields commonly found in humid areas can result in a system layout that differs greatly from the “normal” layout found in the SDI system in an arid or semi-arid area. This publication is not a step-by-step design manual, but it will help you in the design process of an SDI system appropriate to North Carolina. As a part of the humid Southeast, North Carolina’s climate, topography, soils, cropping systems, and water sources require special consideration when considering and implementing a subsurface drip irrigation (SDI) system.
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