Mass Trapping of RhynchophoruS phoenicis Fabricius and Temnoschoito quadripustulata Gyllenhall on Oil Palm Trunks at Okomu, Edo state, Nigeria.
IRORERE, M.O ; AISAGBONHI, C.I.; HAVARD, T.J.R and ENOBAKHARE, D.A
ABSTRACT:Cross – cut oil palm stumps were set up in each of eleven, 25 – ha, oil palm fields at Okomu, from November 1998 to January 1999. Each field had 10 traps, 5 of which was a set of traps and a set of controls. The mean number + S.E of adults Temnoschoita
quadripustulata trapped were 445.07 + 57.03 in Nov.1998; 481.02 + 45.63 Dec. 1998; and 205.98 + 50.62 in Jan. 1999. For Rhynchophorus phoenicis the numbers were 11.091.32 in Nov. 1998; 11.29 + 1.24 in Dec. 1998; and 1.22 + 0.43 in Jan. 1999. No weevil was captured in the control trap. Trap captures of T. quadripustulata were significantly higher (P=O.05) than those of R. phoenicis. Traps became less efficient with time as palm sap waned off.