Yulistian, A., Dewi, E. N. and Purnamayati, L. (2025) “Effect of Agar Industry Waste-Based Liquid Fertilizer on Growth and Nutrient Uptake in Red Lettuce”, Journal of Soil, Plant and Environment, 4(1), pp. 31–46. doi: 10.56946/jspae.v4i1.649.