Touroumgaye Goalbaye

Determining the Optimal NPK Rate for the Growth and Yield of Voandzou (Vigna subterranea (L.) Verdc.) in the Sudanese Zone of Chad

Touroumgaye Goalbaye, Alhadj Markhous Nazal, Hassan Mansour, Ahmat Amine Cherif, Issiné Agoubli, Tamtial Ngariban & Grace Yassi Solo · International Journal of Plant & Soil Science · 2026

Voandzou (Bambara groundnut, Vigna subterranea (L.) Verdc.) is an underutilised legume in Chad, where production remains largely traditional and technical recommendations for mineral fertilisation are limited. This study evaluated graded NPK (15-15-15) rates to identify an approp...