0016-7169 0016-7169 S0016-71692015000400343 Nigeria Nigeria 00 12 2015 00 12 2015 54 4 343 352

2004 45 439-47 2008 1 6 6 110 -15 2005 48 8 8 1137-46 1989 25 247-50 2007 1 11-7 2003 144 3-18 1999 263-75 2012 3 404-9 1997 2 121-36 2001 48 11-23 1999 99-40 2000 122 421-31 1997 35 2 2 216-22 1998 35 1-2 2007 2004 8 1 1 8-22 1992 28 403-12 1993 16 3 3 309-17 1987 22- 57-66 1985 20 99-109 Osun State Agricultural Development Programme (OSSADEP) 1997 11 1988 11-41 2001 1971 36 5 5 943-59 2003 23 3 3 52-62 1997 1990 1983 21 144-52 1966 499 499 2005 265-300 2006 26 2 2 62-9