The treatment with Zn+Mg tended to give higher fresh root yield as
compared with all of application while HB 60 cultivar also gave higher fresh root yield too. The stem
morphological and agronomic characteristics depends on cultivar, cultural practice and climatic
conditions (Alves, 2002). In addition the cultural practice; fertilization had a little effect on cassava
plant height. It is determined by cultivar and climatic. Development of stem and leaves at 90-180 DAP,
maximum growth rates of leaves and stems are achieved in this period (Alves, 2002).