Mycotrichocompost and biochar addition on lead (Pb) content in the ex-gold mining soil for corn plant (Zea mays L.)

Abstract Gold mining land has a low level of soil fertility. One the to increase fertility is addition micro-compost and biochar. Mycotrichocompost contains organic material enriched with microbes in form mycorrhizal fungi Trichoderma therefore compounds can bind metal content. Biochar together matter productivity as well retention availability nutrients for plants. The purpose this study was obtain dose composition mycotrichocompost biochar binding lead Pb content ex-gold mine corn planting. This research carried out from June September 2022. used randomized group design which consisted 2 treatments, treatment (0 tons ha −1 , 5 10 ) 4 8 12 ). observed variables were content, plant height, leaf length, number leaves, area index, chlorophyll results showed that an effect on concentration, However, there no relation between height Leaf Area Index. concludes best combination A3B2, length A3B2.