In order to sustainably increase crop yields and guarantee food quality and safety, a new agricultural revolution is required. Agricultural yield and viability may be enhanced through the application of nanotechnology. Effective seed nano-priming can change seed metabolism and signaling pathways, which in turn can affect germination and seedling establishment, and perhaps the entire plant's lifespan. This research summarizes the advantages of seed priming using Hordeum vulgare-derived Cobalt Sulphide nanoparticles on the germination of Trigonella foenum-graecum and Brassica nigra seeds, and so makes a contribution to ecologically friendly farming techniques. UV–visible, scanning electron microscopy (SEM), and X-ray powder diffraction (XRD) tools were used to examine the metal sulphides formed by nanoparticles for their shape, structure, size, and purity. Seeds of Trigonella foenum-graecum and Brassica nigra were cultivated in petri dishes and exposed to cobalt sulfide nanoparticles. Cobalt Sulphide nanoparticle concentration has been linked to several stages of seedling growth. Germination rate, shoot and root length, and time to germination were all significantly higher than in the control group. This study demonstrated that soaking the seeds for the optimum time increased their germination rate. Seed priming could be a novel use of environmentally friendly nanotechnology to increase crop yields.