This study is focused in determining the managerial competencies of owners and business success of agricultural supplies. Specifically, it sought to evaluate the managerial competencies (professional, social and personal) of the agricultural supplies, the perceive growth and profitability of their business. Further, this study investigates the relationship of the profile of the respondents to the managerial competencies of the agricultural supply owners in the Province of Quirino. The quantitative research design specifically descriptive-correlational was utilized with the use of a standardized questionnaire and in-depth interview with the participants. Findings revealed that the managerial competencies contributed to the business growth of the agricultural supply business. The professional, social and personal managerial competencies have direct linkage to business success. The managerial implications derived justify the need for practitioners to be trained in specific categories of competencies.