PERFORMANCE OF VARIETY AND PLANTING MATERIALS ON THE YIELD AND YIELD ATTRIBUTING CHARACTERS OF SWEET POTATO

Abstract

he present experiment was conducted at the Horticulture Farm, Bangladesh Agricultural University, Mymensingh during the period from December 2001 to May 2002 to study on the performance of variety and planting materials on the yield of sweet potato. There were five sweet potato varieties viz.,Tripti, Kamalasunduri, Daulatpuri, BARI sweet potato-a and BARI sweet potato-5 and three portions of vine cutting used as planting materials, viz .. tip, middle and basal portion. TIle experiment was laid out in RCBD with three replications. Growth habit, yield contributing characters and yield of sweet potato were found to vary significantly from one variety to other. The highest yield of tuberous roots was found in the variety Tripti (33.90 Ifha) and the lowest yield was obtained from the variety Daulatpuri (21.60 Ifha).Vine parts used had significant influence on growth and yield of sweet potato. Planting of tip cuttings gave the highest yield (31.58 t/ha). The yield of tuberous roots (26.85 t/ha) were recorded as the lowest from basal cuttings. The combination of different varieties and planting materials exhibited significant variation in some yield components and yield of sweet potato. The combination of Tripti with tip cuttings produced the highest yield of tuberous roots (36.07 Ifha).