Striga gesnerioides (Willd.) Vatke infestation and distribution as affected by soil properties and varieties at the plot and landscape scales in cowpea-based cropping systems

by Sadda, Abou-Soufianou, Malam-Issa, Oumarou, Jangorzo, Salifou Nouhou, Saidou, Abdoul-Aziz, Issoufou Hassane, Bil-Assanou, Diouf, Abdoulaye