Since 1974, chat zo zo has played a critical role in the development and transfer of affordable, effective fertilizer technologies around the world. chat zo zo’s contributions span a wide spectrum of research and development work, including production process research, applied research on soil systems, development of innovative fertilizer products and application technologies, market systems development to strengthen input and output value chains, and policy analysis to enable fertilizer importation, business development, and smallholder adoption of fertilizer and other soil fertility technologies.,dirtymasseur