Parsaoran Sihombing, Lince Romauli Panataria, & Clhana Sharey Purba Sidadolog. (2025). The Effect Of Planting Spatial And Eco Enzyme Concentration On The Growth And Production Of Shallots: Allium cepa L. Tumbuhan : Publikasi Ilmu Sosiologi Pertanian Dan Ilmu Kehutanan, 2(2), 114–124. https://doi.org/10.62951/tumbuhan.v2i2.327