Edaphic source and tillage systems on yield and nutritional quality of green bean in Ecuadorian volcanic soils

The main objective of this paper was to determine the effects of four edaphic sources and two tillage systems on the yield and nutritional properties of green beans in volcanic soil in the Ecuadorian Andes. For this propose, an experimental design of complete random blocks was established in the field according to the treatments in divided plots, where the main plots were the tillage systems and the subplots the following: edaphic sources such as chemical, organic fertilizers, and biofertilizers. The evaluation of the yield, the plant height, and the nutritional content of the green beans was carried out. Nutritional quality is not affected by the nutrient supply source used, chemical fertilization, organic or biofertilizers. However, the best yield results were obtained for the treatment of compost enriched with Mexican Rhizobium spp. (84.64 g per plant), and minimum tillage with the edaphic amendment of compost enriched with Ecuadorian Rhizobium spp., (93.49 g per plant). The application of rhizobia and compost did not present statistically significant differences in the plant growth response variable. The Ecuadorian rhizobia strain had a better performance than the Mexican strain, which is related to its level of adaptation to agroclimatic conditions.