Hasibuan, Rosma and Purnomo, . and Lestari, Wibowo and Izzaturrijal, Izzaturrijal and Lumbanraja, Jamalam (2019) COMPARATIVE BIOACTIVITY OF PLANT EXTRACTS AND SYNTHETIC INSECT GROWTH REGULATORS AGAINST Spodoptera litura (F.) (LEPIDOPTERA: NOCTUIDAE). Jurnal Hama dan Penyakit Tumbuhan Tropika, 19 (2). pp. 118-126. ISSN 1411-7525