P. Kitundu, M., Msuya, N., & Katima, Z. (2025). Production of Potassium-Rich Biofertilizer from Composted Banana Peels and Watermelon Rinds . Tanzania Journal of Engineering and Technology, 44(1), 118 - 136. https://doi.org/10.52339/tjet.v44i1.1128