Suhartono et al. 2026. Development of Automatic Drip Fertigation and Environmental Control based on IoT for Lettuce Growth (Lactuca sativa L.). Jurnal BETA (Biosistem dan Teknik Pertanian). 11, 1 (Feb. 2026), 67–77. DOI:https://doi.org/10.24843/JBETA.2023.v11.i01.p08 .