The Application of Angsana Leaves Compost (Pterocarpus Indicus Willd.) on Streets in Medan by using Difference Planting Media Compositions Towards the Production and Lead Content of Mustard Greens (Brassica Junceal.)
Angsana (Pterocarpus indicus Willd)leaf compost was madeof pruning shadding plants. The plant was planted along the roads of Medan City. Due to its presence in the middle of heavy traffic, there was a risk that P. indicus leaf compost contains lead metal from unstabilization engine fire of vehicle systems. The process of making P. indicus leaf compost wasusing MOL (Local Microorganisms) from chicken intestinal mucus, brown sugar and papaya. The compost was then used in a mixture of mustard greens’ planting media. Mustard greenswere used as plant indicators to find out the effect of compost and lead content of P. indicuss leaves. The purpose of this study was to obtain the appropriate dosage of mustard greens with safe lead contentfor consumption. This study used a non factorial randomized block design with 5 treatments and 4 replications. The results showed that the mustard greens in K2 treatment (50% compost of P. indicus leaves + 50% top soil)produces the best height of plant, the best wide of leaves and the numbers. The lead content in all treatmentwere all in the same score, the score is<0.14 mg / kg.
Keywords - Composting, Lead, Mustard Greens, P. Indicus