2026. EFFECTIVENESS OF AGRICULTURAL EXTENSION SERVICES IN PROMOTING AGRICULTURAL DIVERSIFICATION AND SUSTAINABLE RURAL DEVELOPMENT IN ARDO-KOLA AND ZING LGAs, TARABA STATE, NIGERIA. Adept Journal of Agricultural and Environmental Sciences. 2, 1 (Jun. 2026), 71–85. DOI:https://doi.org/10.5281/zenodo.23137107.