Zongo K.F. auteur aut IRD Traoré M. auteur aut IRD Guébré D. auteur aut IRD Hien E. auteur aut IRD Blavet Didier auteur aut IRD Yattara I.I. auteur aut IRD Drevon J.J. auteur aut IRD text journalArticle eng text/pdf reformatted digital access Cowpea occupies a considerable place in the nutritional and economic balance of the rural population of Burkina Faso. However, its cultivation is marked by yield instability linked to soil depletion of nutrients, especially N and P, and irregular rains. The objective of this study was to evaluate the effect of phosphorus fertilization with the rock phosphate named BurkinaP, on the spatial and temporal variability of cowpea nodulation and yield. A multilocation test was conducted in 12 and 16 farmers'fields in 2013 and 2014, respectively, in 3 villages of 3 provinces of the northern region of Burkina Faso. Two treatments were compared: zaï without (ZS) and zaï with BurkinaP (ZP). Overall, dry weights of nodules and shoots at flowering stage, and grain at harvest, were significantly increased by BurkinaP. It is concluded that in soils where low availability of P limits crop yields of cowpea especially in arid sud-saharan areas of West Africa, the input of BurkinaP can improve cowpea N2-fixation, and increase and stabilize cowpea yields. specialized 076AGRO05 098AGRIC 082ECOSYS 44 12 69-81 2022 2457-0591 https://www.documentation.ird.fr/hor/fdi:010095064 10.9734/jeai/2022/v44i122080 2457-0591 [F B010095064] https://www.documentation.ird.fr/hor/fdi:010095064 https://horizon.documentation.ird.fr/exl-doc/pleins_textes/2025-10/010095064.pdf IRD - Base Horizon / Pleins textes 2025-09-22 2025-10-15 fdi:010095064 fre