Objetivou-se avaliar a brotação das mudas e a produção de mandioquinha-salsa 'Amarela de Carandaí', provenientes de mudas desinfectadas com óleo de eucalipto e enraizadas em bandejas de isopor. No pré-enraizamento em bandejas, utilizou-se a matriz experimental Plan Puebla III para combinar concentrações de óleo de eucalipto e tempos de imersão, respectivamente: 0,6%/36 s; 1,4%/36 s; 0,6%/84 s; 1,4%/84 s; 1,0%/60 s; 0,1%/36 s; 1,9%/84 s; 0,6%/6 s e 1,4%/114 s, mais uma testemunha (0,0%/0 s). No campo, utilizaram-se 10 mudas por parcela e seis tratamentos: 0,6% s; 36 s; 0,6%/84 s; 1,0%/60 s; 0,1%/36 s; 0,6%/6 s e 0,0%/0 s. Maiores porcentagens de mudas brotadas e altura de plantas foram obtidas nos tratamentos onde se utilizaram concentrações de óleo de eucalipto menores que 1,0% e na testemunha. As maiores massas frescas de raízes comerciais, nas colheitas aos 264 dias após o plantio, foram obtidas nos tratamentos 0,6%/36 s, 0,6%/84 s e 1,0%/60 s. Houve queima das folhas provocadas por Alternaria sp e Septoria sp., com maior intensidade aos 111 dias após o plantio, associadas e sem possibilidade de quantificação isoladamente. Concluiu-se que, para se obter maior produção de raízes comerciais, as mudas devem ser desinfectadas em solução aquosa com doses de 0,6% ou 1,0% de óleo de eucalipto e imersão em tempos de 36 s a 84 s, sendo a colheita aos 264 dias após o plantio.
This work aimed to evaluate the sprouting of cuttings and yield of 'Amarela de Carandaí' peruvian carrot plants from cuttings which were disinfected with eucalyptus oil and rooted in polyethylene trays. In pre-rooting on trays, the Plan Puebla III experimental matrix was used to combine doses of eucalyptus oil and immersion periods, respectively: 0.6%/36 s; 1.4%/36 s; 0.6%/84 s; 1.4%/84 s; 1.0%/60 s; 0.1%/36 s; 1.9%/84 s; 0.6%/6 s and 1.4%/114 s, added a control (0.0%/0 s). At field, ten cuttings per plot and six treatments were used: 0.6%/36 s; 0.6%/84 s; 1.0%/60 s; 0.1%/36 s; 0.6%/6 s and 0.0%/0 s. Highest percentages of sprouted cuttings and height of plants were obtained in treatments with doses of eucalyptus oil smaller than 1.0% and the control. The highest fresh weight of commercial roots, which were harvested at 264 days after planting, were obtained in 0.6%/36 s, 0.6%/84 s and 1.0%/60 s treatments. There was burning of leaves caused by Alternaria sp. and Septoria sp., with more intensity on 111 days after planting, which showed theirselves associated and without possibility of isolate quantification. It was concluded that, to achieve higher yield of commercial roots, it must disinfect the cuttings with aqueous solution with doses of 0.6% or 1.0% of eucalyptus oil and immersion for periods of 36 s to 84 s, with harvest at 264 days after planting.
