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. 2021;6(1):40-54. doi:10.35457/jares.v6i1.1408