Slameto, S. et al. 2026. Yield and Profit Improvement of Maize Utilizing Optimal Planting Density and Rice-Husk Waste as Effective Silicon Fertilizer. International Journal of Recycling of Organic Waste in Agriculture. 15, 2 (Jun. 2026). DOI:https://doi.org/10.57647/ijrowa.2026.18325.