Tasistro, Armando, Robertony Camas-Gómez, and Ivan Ortiz-Monasterio. 2021. “Gypsum and Potassium Application to Acid Soils for Maize (Zea Mays L.) Production in La Frailesca, Chiapas, Mexico”. Agronomía Mesoamericana 33 (1):46173. https://doi.org/10.15517/am.v33i1.46173.