SANTI, L. P., A. ARDIYANTO, A. KURNIAWAN, L. A. PRABOWO, and I. SEBASTIAN. “Improvement of Water and Nutrient Efficiencies Oil Palm through Bio-Silicic Acid Application”. Menara Perkebunan, vol. 89, no. 1, May 2021, doi:10.22302/iribb.jur.mp.v89i1.409.