Lugo-Mercado, H. M., J. Badillo-Feliciano, and F. H. Ortiz-Alvarado. 1984. “Effects of No Tillage and Various Tillage Methods on Yields of Maize, Field Beans and Pepper Grown on a Mollisol in Southern Puerto Rico”. The Journal of Agriculture of the University of Puerto Rico 68 (4):349-54. https://doi.org/10.46429/jaupr.v68i4.7303.