O objetivo do presente trabalho foi avaliar o desempenho de clones de batata-doce cultivados em diferentes períodos. O delineamento experimental foi de blocos casualizados, em esquema de parcelas subdivididas, com três repetições. Foram testados nas parcelas três períodos de cultivo (3, 5 e 7 meses), e nas subparcelas, cinco clones de batata-doce (acessos IBP-007, IBP-038, IBP-075, IBP-079 e IBP-149), e a cultivar comercial Brazlândia Rosada. As variáveis analisadas foram sobrevivência, danos causados por insetos de solos (notas de 1 a 5 onde 1= sem danos e 5= muitos danos, sem valor comercial), massa fresca e seca de parte aérea, produtividade total de raízes. Os maiores danos causados por insetos de solo observou-se no clone IBP-007 (4,29), e menores danos nos clones IPB-038 (2,84), IPB-075 (3,01) e IPB-149 (2,88), que apresentaram resistência no cultivo durante sete meses. O clone IPB-007 apresentou elevados valores de massa fresca (14,07 t/ha) e seca (2,81 t/ha) de parte aérea, em todos periodos de cultivo, apresentando também, alta produtividade de raizes (33,16 t/ha). Recomenda-se cultivar a batata doce durante um período de cinco meses.
The aim of this work was to evaluate the performance of sweet potato clones grown in different cultivation periods. The experimental design was a randomized block design, in a split-plot scheme, with three replications. Tests in the plots were three cultivation periods (3, 5 and 7 months), and in the split plots, five sweet potato clones (accessions IBP-007, IBP-038, IBP-075, IBP-079 and IBP-149), and the commercial cultivar Brazlândia Rosada. The studied variables were: survival, damages caused by soil insects (grades from 1 to 5 being 1= without damage and 5= very damaged, without commercial value), fresh and dry weight of the shoots, total root yield. The greatest damages caused by soil insects were observed on the clone IBP-007 (4.29) and the smallest damages were observed on the clones IPB-038 (2.84), IPB-075 (3.01) and IPB-149 (2.88) which presented resistance during the seven month cultivation period. Clone IPB-007 presented high values of fresh (14.07 t/ha) and dry weight (2.81 t/ha) of aboveground part in all the cultivation periods. Clone IPB-007 also presented high root yield (33.16 t/ha). We recommend the use of the cultivation period of five months.