Characterization of the Variability in Soil pH in Arkansas Soils

The detrimental effects of low soil pH on cotton root development are well known. It is also known that soil pH tends to vary both, temporally and spatially. Previous research has shown that collecting samples on a 2.5 acre-grid fashion do not capture all the variability in soil pH, such sampling density was adopted mostly for economic reasons. The recent development of the Veris Mobile Sensor Platform (MSP™) on-the-go pH sensor allows for the collection and automated pH sensing of up to 10 samples per acre. The objective of this talk is to present preliminary data on the performance of the MSP sensor in selected soils in Arkansas.