Impact of Super Absorbent Polymer and Polyacrylamide on Water Holding Capacity on Ultisol, Lampung. j Trop. Soils [Internet]. 2023 Apr. 10 [cited 2025 Dec. 26];29(1):33-40. Available from: https://journal.unila.ac.id/index.php/tropicalsoil/article/view/503