Silalahi, F. R. ., Zuliyanti, A., & Siregar, D. S. . (2023). Effectiveness of Using Electric Knapsack Sprayer in Weed Control on Oil Palm Plants (Elaeis guineensis Jacq) . Jurnal Sosial Ekonomi Pertanian, 19(3), 195-206. https://doi.org/10.20956/jsep.v19i3.22201