Despite all the policy actions of the various regimes, food insecurity remains a threat in Nigeria. This situation calls for an investigation into the policies and programmes on agriculture to ascertain how they have contributed to food productivity. This present study reviewed past literatures on the contributions of some agricultural policies/programmes directed at improving food supply in Nigeria. Findings from the reviews indicated that at the individual level, the programmes improved the productivity of the beneficiaries which led to improved food productivity within the period. This study is however of the view that the fact that the country is still faced with acute food deficit is an indication that the programmes were not designed to be sustainable. Consequently, the study recommends an effective monitoring of the beneficiaries of future programmes. Also, exit strategy should be factored in the design of the agricultural interventions to ensure the sustainability of the programmes.