This publication, prepared under the Asian Food and Agriculture Cooperation Initiative (AFACI) and the Rural Development Administration (RDA), Republic of Korea, documents Bangladesh’s efforts to improve its Rural Agricultural Technology Extension System (RATES Project). It compiles scientific and field-based information on disease and pest management, cultivation practices, and extension methods for key horticultural crops such as onion, garlic, chilli, turmeric, ginger, black cumin, cinnamon, and others.