INFLUENCES OF MANURE AND BIOCHAR ON BIOMASS YIELD AND NUTRIENT VALUE OF PENNISETUM PURPUREUM CV. MOTT GROWN ON POST-NICKEL-MINING SOIL - W. Kurniawan; Hardianto; A. Ramdani; A. Bain; T. Bachtiar; T. Wahyono (Journal of Animal and Plant Sciences, 2022)