Poor soil fertility is among the major factors that limit faba bean production in Wolaita Zone in southern Ethiopia. Therefore, a field experiment was conducted in the Kokate Marachare subdistrict of Sodo Zuria District of the zone during the 2019 and 2020 cropping seasons to determine the response of faba bean to different rates of nitrogen (N), phosphorus (P), and potassium (K) fertilizers under lime-treated soil conditions by using Tumsa faba bean variety. The treatments consisted of three rates of nitrogen fertilizer (0, 23, and 46kgNha⁻¹), three rates of phosphorus fertilizer (0, 46, and 92kgP₂O₅ ha⁻¹), and three rates of potassium fertilizer (0, 30, and 60kgK₂O ha⁻¹) that were laid out as RCBD and replicated three times per treatment. The results indicated that the N, P, and K fertilizer combination at 23:92:60kgha⁻¹ increased plant height, the number of branches per plant, and stem girth by 18, 62.6, and 55.6, respectively, compared with the control treatment. A significantly high aboveground dry biomass (11.8tha⁻¹), number of pods per plant (17 pods), number of seeds per pod (4 pods), stover yield (6.83tha⁻¹), and hundred seed weight (88g) were obtained from the N, P, and K fertilizer combination at 23:92:60kgha^–1. The highest grain yield (4.97tha⁻¹) was obtained from the N, P, and K combination at 23:92:60kgha⁻¹, which was 360 higher than the yield obtained from the control treatment. Moreover, the highest mean net benefit (USD 4,109.33ha⁻¹) with an acceptable marginal rate of return of 1,340 was obtained from the N, P, and K fertilizer combination at 23kgN, 92kgP₂O₅, and 60kgK₂Oha^–1, respectively. Thus, these rates are suggested for faba bean production in the acidic soils of the Wolaita Zone.

A acidez do solo e a escassez de variedades de fava adaptadas a solos com pH mais baixo são fatores importantes que limitam a produção de feijão-fava na Etiópia. O tipo de solo dominante na área de estudo é o Nitissolo. Portanto, em 2019, realizou-se um experimento em estufa para avaliar a resposta das variedades de feijão-fava a diferentes taxas de aplicação de calcário. Utilizaram-se quatro doses de calcário como tratamentos (0, 2, 4 e 6 Mg.ha–1) e cinco variedades de feijão-fava (Local, Dosha, Gebelecho, Tumsa e Bobicho), dispostas em um delineamento em blocos casualizados com seis repetições. Os efeitos principais e de interação das doses de calcário e das variedades influenciaram significativamente (p < 0,05) todos os componentes de crescimento e rendimento, assim como os parâmetros de rendimento. Os parâmetros morfológicos da raiz foram significativamente (p < 0,05) afetados pelos efeitos principais da taxa de calcário. Como resultado, a maior biomassa aérea de 47,92 g por vaso e os rendimentos de sementes de 19,16 g por vaso foram obtidos em resposta à interação da variedade Tumsa com 3 g de calcário por vaso (2 Mg ha–1). A menor biomassa aérea de 32,08 g por vaso e o rendimento de sementes de 12,84 g por vaso foram obtidos na variedade local sem aplicação de cal. Em geral, em termos de rendimento de sementes, as variedades Gebelcho e Tumsa se destacaram ao atingir seu máximo rendimento de sementes em resposta à aplicação de 3 g de cal por vaso (2 Mg ha–1). Assim, verificou-se que a taxa de calagem de 3 g por vaso (2,0 Mg ha–1) com as variedades Gebelcho e Tumsa foi a melhor combinação para melhorar o desempenho da cultura na área de estudo.

Limited varieties are among the major factors that limit cassava production in Ethiopia. Therefore, afield experiment was conducted in the Mela and Bodisub-districts of Gena Bosa district in Dawro Zone during 2017 cropping seasons, to determine the growth response of cassava varieties. The treatments consisted of four varieties (Local, Variety, Kello and Awassa-04 varieties) and two locations (Mela and Bodi sub-district). The experiment was laid out as a randomized complete block design (RCBD) and replicated three times per treatment. Data were collected on phenology, growth, yield components and yield. The data were subjected to analysis of variance. The results indicated that interaction effect of variety and locations were significantly affected crop phenology, growth, yield components and yield. Awassa-04 variety planted both at Mela and Bodisub-district significantly improved phenology, growth, root morphology, yield components, and root yield of cassava. The average root yield of cassava obtained in Awassa-04 variety planted at Mela sub-district about 46.5% exceeded the average root yield obtained from local cassava planted at Bodi sub-districts. The highest mean net benefit (162,880 ETBha–1) with an acceptable marginal rate of return of 3,460% was obtained fromAwassa-04 variety. Thus, planting Awassa-04 variety is suggested for maximize the agronomic and economic returns of cassava farmers in the study area.