The research was carried out on the grounds of the Workshop of Teaching and Research of Horticultural Plants (TEIPH), of the Faculty of Agronomy-UNAP, Zungarococha, District of San Juan Bautista. The type of research was quantitative, experimental, explanatory, cross-sectional and prospective, with one independent variable (Increasing dose of chicken) and six dependent variables (Plant height, Plant diameter, root length, number of leaves/plant, weight of leaves/plant, and weight of leaves/ha). The objective of the research work was to determine the behavior of the agronomic and yield components under increasing doses of chicken in Brassica olerácea. "cabbage", Var. Portuguese tronchuda, in Zungarococha-Loreto. 2021. For the results of the statistical analysis, the Completely Random Block Design was used, with 4 Treatments and 4 repetitions. experiment the conclusions were reached: The ...