Author/Authors :
YONLI, D. Institut de l Environnement et de Recherches Agricoles, Burkina Faso , TRAORÉ, H. Institut de l Environnement et de Recherches Agricoles, Burkina Faso , HESS, D.E. Purdue University - Agronomy Department, USA , ABBASHER, A.A. University of Gezira - Abu Haraz College, Sudan , SÉRÉMÉ, P. Institut de l Environnement et de Recherches Agricoles, Burkina Faso , SANKARA, P. Universite de Ouagadougou - Unite de formation et de recherche en sciences de la vie et de la terre, Burkina Faso
Abstract :
Fifteen Fusarium oxysporum isolates from diseased parasitic weeds (Striga hermonthica plants) were evaluated over two years (1997-98) to identify the most effective isolates for the control of the parasite in infested sorghum fields in Burkina Faso. In both years the fungus was found to reduce 7 Striga infection in sorghum by 50% although no significant differences were found among the 15 isolates in this respect. In 1997, Striga emergence was delayed by 10 days and the 47% reduction in Striga biomass is attributed to the effects of fungal isolates, whereas in 1998, Fusarium reduced emerged Striga densities by 45%. However, there is need for improved bioherbicide formulations and delivery systems to enhan ce the potential role of biological control for integrated management of the parasite in Burkina Faso.
Keywords :
Biological control , Fusarium oxysporum , Sorghum bicolor , Striga hermonthica
