Mawaddah, U.M., Liestiany, E.L. and Sepe, M.S. 2026. Effect of Giving Red Onion Peel Powder Regarding the Attack Intensity of Meloidogyne spp. on Celery Plants. JURNAL PROTEKSI TANAMAN TROPIKA. 9, 2 (Jul. 2026). DOI:https://doi.org/10.20527/jptt.v9i2.3734.