Response of enset (Ensete ventricosum (welw.) cheesman) to different application rates of potassium application in Hula District, Sidama region, Ethiopia
Keywords:
Growth parameters, kocho and bula yields, maturity, agro-ecologyAbstract
Field experiment was conducted in Hula district, Sidama region, Ethiopia to investigate the response of enset to potassium (K) fertilizer for two years (2016-2018). The treatments were: Control (0), 80, 150 and 200 kg K/ha as KCl along with the recommended nutrients to the area; 20 kg P/ha, 11.15 kg S/ha and 0.57 kg B/ha as NPS+B; and 138 kg N/ha as Urea and NPS+B. Application of K in two consecutive years increased enset production and enabled the enset to reach the second edible stage (etancho) in two year and four months after transplanting. Thus, enset matured two years earlier as compared to the farmers’ experience, which takes four years to reach this stage and crops in control plots matured at one year later stage (malancho) than those with K application. Application of K also increased the growth, dry matter and yield (Kocho and bulla) of enset as compared to the control plants. Among the treatments, twice application of 80 kg K/ha during the life of enset significantly (p< 0.05) increased the growth, yields and net benefits of enset production than the other treatments as indicated by the highest marginal rate of return. Hence, twice application of 80 kg K/ha is recommended for the study area.
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