Potential Benefits From the Land Application of Gypsum to Mid South Soils.

Many soils in the Mid South are characterized by significant amounts of silt (60-70%), which makes them prone to surface crusting after a rainfall event. This condition forces Arkansas farmers to increase seeding rates, particularly cotton, to ensure proper emergence. However, this practice increases production costs significantly. Additionally, a significant percentage of Mid South soils contain a fragipan horizon, which is characterized by acidic pH, with extractable aluminum levels in excess of 250 mg/kg. The objective of this paper is to discuss the extend and implications of the issues described above and the potential role of gypsum on addressing them.