The reuse of solid waste is important to reduce the polluting effects produced by inadequate management, which impacts the environment negatively, as demonstrated in this work, developed at the Faculty of Agronomy in the Zungarococha farm that an adequate use of wood ash positively affects crops improving their production and productivity, in this case the forage species Cuba 22, the DBCA was used with four treatments and three repetitions, the treatments studied were T1 (0 kg / m2 of ash, T1 3 kg / m2 of ash, T2 4 kg / m2 and T3 5 kg / m2 of ash), after processing the field data it is concluded; The ash doses used in the forage species Cuba 22 present high statistical significance in the variables evaluated at 60 days, as reported by T3 (5 kg/m2 of ash) regarding green matter, dry matter, accumulated carbon and photosynthetic efficiency, with values (6.20 kg/m2, 1.10 kg/m2, 0.49 kg/m2 a...