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Osman, M A and Raju, P S and Peacock, J M (1991) The effect of soil temperature, moisture and nitrogen on Striga asiatica (L.) Kuntze seed germination, viability and emergence on sorghum (Sorghum bicolor L. Moench) roots under field conditions. Plant and Soil, 131 (2). pp. 265-273. ISSN 1573-5036
Raju, P S and Osman, M A and Soman, P and Peacock, J M (1990) Effects of N, P and K on Striga asiatica (L.) Kuntze seed germination and infestation of sorghum. Weed Research, 30 (2). pp. 139-144. ISSN 0043-1737
Osman, M A (1989) IDRC Striga Project, Striga Physiology 3-P-85-0343 Progress Report 1988 and Experiments 1989. Documentation. International Crops Research Institute for the semi-arid Tropics, Sadore, Niamey, Niger.
Osman, M A (1989) IDRC Striga project. Striga physiology 3-D-85-0343: progress report, 1988 and experiments, 1989. Monograph. International Crops Research Institute for the Semi-Arid Tropics, Sahelian Center , Sadore, Niamey.