Assessing Chromoleana odorata as a trap crop for the cultural control of nematodes
Chromolaena odorata was assessed under laboratory conditions as a possible trap crop for cultural control of plant nematodes. The fine sieve extraction technique was used to extract the plant parasitic nematodes from soil, leaf and root samples of Chromolaena odorata, Different nematode genera were observed and counted. They include Meloidogyne spp 168 (38.7%), Paratylenchus spp 75 (17.2%), Hopolaimus spp 43 (9.9%), Rotylenchus spp 24 (5.5%), Paralongidorus spp 33 (7.6%), Radopholus spp 25 (5.8%), Naccobus spp 28 (6.5%), Helicotylenchus spp 38 (8.8%). Meloidogyne spp occurred most among the nematodes found in Chromolaena odorata. The study revealed that Chromolaena odorata is susceptible to nematode attacks and is therefore a potential trap crop for nematode attack (Meloidogyne spp). Further studies on trials of more probable crops are suggested in order to have a broader pool of trap crops for cultural control of plant parasitic nematodes.
Keywords: Chromolaena odorata , Meloidogyne spp, nematode