Overcoming Low Maize Yields with Lime and Potassium in Chiapas, Mexico

Soil acidity is a major constraint that limits maize productivity in the southern agricultural region of Chiapas, Mexico. The region’s dominant sandy soils are derived from granite in a lowland tropical environment. These soils are naturally acidic, but conditions are made worse by burning plant residues, use of acidifying fertilizers, and tillage.