Ajis, Farrah Aizan, Asilah Abdul Mutalib, Zalina Ismail, and Zahidah Ab Latif. 2022. “Effects of Biochar and Banana Peel Application on Ulam Raja (Cosmos Caudatus) Growth”. AgroTech- Food Science, Technology and Environment 1 (2):20-25. https://doi.org/10.53797/agrotech.v1i2.3.2022.