Lestari, Adyla Mita, Darsono Wisadirana, Sanggar Kanto, and Solih Mu’adi. 2022. “Diffusion and Adoption of Biochar Innovations in Agriculture at Gunungsari Village , Bumiaji Subdistrict, Batu City, East Java, Indonesia”. RA Journal Of Applied Research 8 (4):303-13. https://doi.org/10.47191/rajar/v8i4.14.