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University of Illinois research sees higher yields with subsurface drip irrigation

Using subsurface drip irrigation could be a yield saver if farmers experience another year like 2019.

Crop Science Professor Fred Below says drip irrigating crops below the surface is a more efficient way to use water and deliver nutrients.

“It is sort of like having an IV of nutrition right into the crop row. Not only do we have insurance in optimal rainfall, but it is also a way to deliver the nutrients right where you need them.”

Although he would rather not experience another growing season like 2019, he tells Brownfield this system works well with unpredictable rainfall.

“Wet early means we don’t grow roots and then dry later means we wish that we had more roots. So, we think we are going to see a lot bigger impact this year where we can deliver those nutrients and water. Time will tell.”

Below says on average intensively managed corn under subsurface drip irrigation produces 117 bushels per acre more than the standard system.

Brownfield interviewed Below at University of Illinois’ Agronomy Day.