<p>The conversion of lignocellulosic waste into organic fertilizers has gained increasing attention as a pathway for nutrient recovery and resource efficiency. This study presents a combined bibliometric and systematic analysis of the scientific literature on lignocellulosic waste valorization for fertilizer production. Publications indexed in the Web of Science and Scopus were analyzed to identify temporal trends, geographic distribution, and thematic developments in this field. The results indicate a marked increase in research output over the past decade, with strong contributions from countries with established circular economy policies. Composting remains the dominant approach, particularly when enhanced by biological treatments such as bacterial and fungal inoculants, vermicomposting, and microbial consortia, which accelerate degradation and improve nutrient availability. Key parameters used to assess process efficiency include C:N ratio, lignocellulosic composition, pH, and phytotoxicity. However, phytotoxicity is often evaluated using a single indicator species, limiting the robustness of toxicity assessments. Despite advances, there is still a lack of studies on application in different crops and forestry systems, as well as validation at an industrial scale. The valorization of lignocellulosic waste represents a pathway for nutrient recovery and agricultural reuse but requires further work to address technical constraints and support large-scale implementation.</p> Graphical Abstract <p></p>