The work was installed in the Agrostological Garden of the Zungarococha farm testing different levels of Ash in the Castilla bean crop, the population universe was 480 seedlings, installed at 0.50 m x 0.50 m, making a total of 40,000 plants per hectare, the test was experimental using the Randomized Complete Block Design, using four methods and three reproductions, the doses were (0. 3, 4 and 5 kg of ash / m2), the field data were processed in the INFOSTAD software, reaching the following results: There are significant effects of ash on the agronomic aspects of the species under study, where T3 (5 kg / m2 of ash) obtained the best averages compared to the other treatments regarding height (93 cm), legumes (24 / plant), pod length (36.50 cm) and seed weight (0.082 g/plant), so it is concluded that the problem posed in this investigation is accepted.