“Effect of Planting Distances and Spraying With Plant Extracts on Seed Yield and Biochemical Compounds of Castor (Ricinus Communis L.)”. Euphrates journal of agricultural science 18, no. 3 (September 30, 2026). Accessed October 29, 2026. https://ejs-agri.com/index.php/EJAS/article/view/271.