Abstract
Irrigation Water Management Technologies for Furrow-Irrigated Corn that Decrease Water Use and Improve Yield and On-Farm Profitability
Highlights
The Mississippi River Valley alluvial aquifer (MRVAA) has the third highest rate of daily water withdrawal of any aquifer in the United States (Maupin and Barber, 2005)
The objective of this research was to determine the effect of the irrigation water management (IWM) practices of computerized hole selection (CHS), surge irrigation (SURGE), and sensor-based irrigation scheduling on corn grain yield, total water applied, irrigation water use efficiency (IWUE), and net returns above irrigation costs at a production scale
Irrigation enterprise budgets were developed for both CONV and IWM technologies using the Mississippi State University (MSU) budget generator models developed for four different source depths as described in Bryant et al (2017)
Summary
Computerized hole selection improves irrigation application efficiency by considering the shape of the field, length of poly-tubing, and elevation changes along the field crown (Bryant et al, 2017). As noted for soybean [Glycine max (L.) Merr.], CHS, SURGE, and sensor-based irrigation scheduling may decrease consumptive water use without negatively affecting corn grain yield and profitability in the Mid-Southern USA (Bryant et al, 2017). The objective of this research was to determine the effect of the IWM practices of CHS, SURGE, and sensor-based irrigation scheduling on corn grain yield, total water applied, irrigation water use efficiency (IWUE), and net returns above irrigation costs at a production scale
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