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Garry L. Grabow, Ph.D., P.E.

Biological & Agricultural
Irrigation Engineering

Dr. Grabow
Garry Grabow

Room 202, D. S. Weaver Labs
Box 7625, NCSU
Raleigh, NC 27695-7625

Mail address
Phone: 919-515-8242
FAX: 919-515-6719


See workshop and training for current Irrigation Systems workshops

New Publication

AG-553-09- Calibration

Dr. Grabow and student take a pressure readingDr. Grabow shows a student how to take a pressure reading.

 Dr. Grabow holds a presure guageDr. Grabow displays an irrigation pressure gauge to workshop attendees.

Dr Grabow teaches an extension workshopDr. Grabow explains irrigation information at an extension workshop.

Dr. Grabow stands beside an irrigation  hose drag
Dr. Grabow has operation know-how when it comes to large
equipment like this hose drag or smaller drip
irrigation systems.


Dr. Grabow has expertise in land application of animal and industrial wastewater, irrigation systems and irrigation water management, and water quality monitoring. He provides training to operators of animal waste systems and operators of surface irrigation systems for land application of waste, and also to certified irrigation contractors.

irrigation piping

Dr. Grabow’s research interests include irrigation water management, land application of waste and water quality impacts of various land application systems. Grabow is involved in applied research projects that are evaluating the effectiveness of several different “smart” irrigation technologies in turfgrass in both research and homeowner settings. He is also involved in a study that is evaluation the effectiveness of chlorination technologies to disinfect irrigation water for use on fresh produce. He has also led research in subsurface irrigation systems for use in both freshwater and wastewater applications.

small irrigation sprayer


Prior to coming to NC State, Dr. Grabow worked for an irrigation district in California and spent 10 years in private water resources consulting. He has previous experience with international consulting including water reuse projects in the Middle East.

Dr. Grabow work with industry has been recognized by the NC Cooperative Extension Foundation and awarded the NC State Grange Search for Excellence Award in 2011. Currently Dr. Grabow is the Extension Leader for the Department of Biological and Agricultural Engineering and faculty advisor for departmental graphic support.

In the NEWS...

Greener Ways to Greener Lawns Publication: NCSU Results Magazine-Research and Graduate Studies Summer 2009.

Lawn-watering study could boost proposed restrictions Newscast: WRAL-17, Date: June 24, 2008.

Tools for Turfgrass Irrigation and Management Publication: North Carolina Turfgrass Magazine Date: January/February 2008