Effectiveness Test of Tagetes Erecta L Powder and Cattle Urine Waste That Potentially Repelent Ont Boring Pests of Nezara Viridula Pods in Soybean (Glycine Max L) in Patumbak Subdistrict, Deli Serdang, North Sumatra. Petrop 2019, 6 (2), 250-254. https://doi.org/10.32734/jopt.v6i2.3168.