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ANALYSIS OF BATOPANG (BIOINSECTICIDE OF BROTOWALI STEM EXTRACT AND KETAPANG LEAVES) BASED ON SNI 02-3128-1992 AND EFFECTIVENESS TEST AGAINST WOOD GRASSHOPPER (VALANGA NIGRICONIS) WITH THE METHOD LETHAL CONCENTRATION 50. Jares [Internet]. 2021 Mar. 18 [cited 2026 Feb. 2];6(1):40-54. Available from: https://ejournal.unisbablitar.ac.id/index.php/jares/article/view/1408