Striga (Witchweeds) in Sorghum and Millet: Knowledge and Future Research Needs

Abstract

Striga spp (witchweeds), are notorious root hemiparasites on cereal and legume crops grown in the
\nsemi-arid tropical and subtropical regions of Africa, the southern Arabian Peninsula, India, and
\nparts of the eastern USA. These weed-parasites cause between 5 to 90% losses in yield; total croploss
\ndata have been reported. Immunity in hosts has not been found.
\nPast research activities and control methods for Striga are reviewed, with emphasis on the
\nsocioeconomic significance of the species. Striga research involving biosystematics, physiological
\nbiochemistry, cultural and chemical control methods, and host resistance are considered. We tried
\nto itemize research needs of priority and look into the future of Striga research and control In light
\nof existing information, some control strategies which particularly suit subsistence and emerging
\nfarmers' farming systems with some minor adjustments are proposed. The authors believe that a
\ngood crop husbandry is the key to solving the Striga problem