Effect of Neem Seed-Based Biopesticides and Hygienized Human Urine (HHU) on the Main Insect Pests of Cowpea [Vigna unguiculata (L.) Walp.] on Station and in Rural Environment of Niger
Laouali Amadou, Ousseina Abdoulaye, Ibrahim Baoua, A. Souleymane et autres