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Abstract

Two advanced peanut irrigation scheduling tools were developed and evaluated. The first involvedmaking, Irrigator Pro, a public-domain tool developed by the USDA-ARS National Peanut Research Laboratory, compatible with soil moisture sensors that measure volumetric water content. The new version offers automated data entry and provides hourly or daily irrigation decisions. The second tool involved developing an evapotranspiration (ET) -based model that was incorporated into the existing SmartIrrigation CropFit App. The model includes a localized growing degree day (GDD) -based crop coefficient (Kc) curve. Both tools were compared to other advanced irrigation scheduling tools in replicated plot studies at two locations in southern Georgia, USA. The results showed that both tools performed at least as well as the rest of the treatments and in some cases, they outperformed them in irrigation water use efficiency. The applications were released for public use in April 2023 and will continue to be evaluated in the upcoming seasons with on-farm trials.

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