17 Sanou Lassina Ouedraogo Souleymane Journal of Animal and Plant Sciences JAPS 20242024/12/22 34 6 1506-1518 1018-7081 https://doi.org/10.36899/JAPS.2024.6.0828 <p><span lang="EN-CA">Seed production of forage species in the natural rangelands reflects its ability to reseed and enrich the rangeland. This study aims to evaluate the effect of dolomite and phospho-nitrogen fertilization on the biomass production and seed quality of&nbsp;<em>Brachiaria ruziziensis</em>,&nbsp;<em>Stylosanthes hamata</em>, and&nbsp;<em>Stylosanthes guianensis&nbsp;</em>in Burkina Faso. Thus, two split plots experimental setups were established in the Farako-B&acirc;, Burkina Faso. The first block without dolomite was composed of nine treatments in four repetitions. The experiment involved the cultivation of&nbsp;<em>Brachiaria ruziziensis</em>&nbsp;(Ruzi, Congo grass) on elementary plots of 30 m², with treatments consisting of two doses of dolomite (0 and 400 kg. ha^-1), three doses of nitrogen (N) (0; 50; and 100 kg N. ha^-1) and three doses of phosphorus (P) (0; 50 and 100 kg P₂O₅.ha^-1). In the second experiment design, two varieties of&nbsp;<em>Stylosanthes</em>&nbsp;were grown, with treatments including two doses of dolomite (0 and 400 kg. ha^-1) and three doses of P (0; 50; and 100 kg P₂O₅.ha^-1). Each elementary treatment was repeated 4 times in the experimental design. The results showed that the application of dolomite, P and N significantly influenced the biomass of&nbsp;<em>Brachiaria ruziziensis</em>. The plot treated with dolomite and fertilized at doses of 50 P/ha and 100 N. ha^-1&nbsp;provided a biomass (7403 kg DM. ha^-1) ten times greater than that treated with dolomite and fertilized at doses of 100 kg P. ha^-1and 100 N. ha^-1&nbsp;(734 kg DM. ha^-1). For seed quality, N influenced the rate and germination speed of&nbsp;<em>Brachiaria ruziziensis</em>. In addition, the contribution of dolomite to the variety of&nbsp;<em>Stylosanthes hamata</em>&nbsp;influenced grain yield and 1000-grain weight respectively (P&lt;0.05).&nbsp;<em>S. hamata</em>&nbsp;variety showed better performance with grain yield of 191 kg. ha^-1and 3.81 g/1000 seeds. Based on these results, phospho-nitrogen fertilization seems necessary to increase the biomass production and the grain yield of&nbsp;<em>Brachiaria ruziziensis</em><strong>.&nbsp;</strong></span><span lang="EN-GB">This implies that a combination of P and N fertilizers with dolomite would be beneficial for enhancing the productivity of this species.</span></p> Biomass, Brachiaria ruziziensis,Fertilizers, Fodder, Grasses, Legumes, Stylosanthes hamata, Stylosanthes guianensis Pakistan Agricultural Scientists Forum https://thejaps.org.pk/AbstractView.aspx?mid=2024-JAPS-1742