Sanjaya R, Riwandi, Hasanudin. Enhancing Leaf Potassium and Corn Yield in Degraded Ultisols with Vermicompost Fertilizer. TERRA [Internet]. 2023 Dec. 17 [cited 2025 Aug. 25];6(2):89-93. Available from: https://ejournal.unib.ac.id/terrajournal/article/view/31116