This paper examined agricultural' ext~nsion·approaches in gerieral: previ~us extension approaches applied in Nigeria and those yet to be tested. It looked at the coritradictory concerns which give several contrasting perspectives, extension's role, purposes and the different views reflected therein. The paper also tried to meet the challenge for a new extension approach for Nigeria in the 21st century by proffering infrastructure, coordination, policy and management of agricultural extension as a logical prima facie duties for an effective impact.