SummaryStrigaseeds were extracted from soils collecled in Mali and the viahility of these seeds was estimated.Strigaseeds were found in 45 of 46 samples taken from 23 fields.Siriga hermonthica(Del.) Benth. growmg on the host crop millet, was present at all 46 sites sampled. The a size uf theStrigaseedbaiik measured lo a depth of 15 cm was estimated to be 38 800 m‐2of surface area (geometnc mean 11 500). The average number ofS. hermonthicaplants observed per millei hill was 8.83 (geometric mean 3.89) or 13.98 m‐2(gcometrie mean 5.69 m‐2). Higher crop hill densities tended to result in higher densities of emergedS. hermonthicaper hill. The relationship between seeds m‐2andS. her‐monhicaplants m‐2was fitied to a reetungular hyperbola and used to reassess an existing model ofS. herniou