Recuperación de un suelo acido a partir de la aplicación de enmiendas de cal y humus de lombriz para la productividad de maíz en Coyaima Tolima

Abstract

Depletion of soil nutrients, mainly due to inappropriate agricultural practices, leads to a decrease in pH. The implementation of organic amendments such as vermicomposting and the addition of lime are methods that have shown positive effects, favoring the production and quality of the crops. This study evaluates the effect that the application of these amendments has on the quality and productivity of the corn crop in a soil, with a pH equal to 4.7. It is located in the rural property “la primavera”, Vereda Chenche Medialuna, municipality of Coyaima, Tolima Department, Colombia, South America. The experiments began in the last months of 2020, harvesting the fruits in February 2021. Five soils are tested. No treatment, treatment with vermicomposting leachate, lime treatment, treatment with lime-vermicomposting and only vermicomposting humus. The variables evaluated are the germination capacity of the corn seeds in each treatment, the growth and development of the crop, taking as a reference the height and diameter of the stems, the length and diameter of the fruits, the number of rows, total grains and the weight of them. The results obtained show that growth and fruit production in the five treatments was higher in the humic amendments, especially in the lime-vermicomposting amendment, with a highly significant difference with respect to the soil without treatment.