EFFECT OF BABANDOTAN WEED (Ageratum conyzoides L.) ON ANTIOXIDANT AND PATCHOULI OIL YIELD OF Pogostemon cablin (Blanco) Benth cv. Sidikalang

Weed interference results in increased synthesis of reactive oxygen species (ROS). High accumulation ROS causes oxidative stress and stimulates the activation antioxidant defense system plants. biotic form allelochemicals abiotic competition for plants which inhibition growth development Ageratum conyzoides is an annual weed plantations can cause on surrounding This study aims to determine effect A. content total phenol proline patchouli leaves [Pogostemon cablin (Blanco) Benth cv. Sidikalang] as well percentage essential oil yield from P. cablin. The was conducted with a Complete Randomized Design (CRD) single factor levels many four treatments (0, 2, 4, 6 individuals per treatment). concluded that higher led increase leaves, but decreased oil.