DUAL-PURPOSE ASSESSMENT FOR SWEETPOTATO
ABSTRACT: This study aimed to
classify the types of sweet potato based on the ratio of total dry matter of
roots to vine (R/V) in order to make the option available in integrating the
crop-livestock systems. Seventeen sweet potato cultivars were planted in
Randomized Complete Block Design with three replications applied at two
locations, Malang and Blitar. Each cultivar planted in plot measures 2.5 m x 5
m in Malang and 3.0 m x 5 m in Blitar, and each consists of four rows with a
spacing of 25 cm in rows. All cultivars gave a dose of 250 kg NPK fertilizer
(15-15-15)/ha twice, one-third of dose given at planting and the remainder in a
month after planting. Plants were harvested at four months after planting.
Fresh weight and dry weight of storage root, fresh weight and dry weight of
vines, harvest index, and the ratio R/V are determined. There was different performance of 17
cultivars planted at two locations. Cultivars planted in Malang were classified
into four types, namely forage, which consists of three cultivars among 17
cultivars, low dual-purpose (3 cultivars), high dual-purpose (7 cultivars), and
low root production (4 cultivars); while cultivars planted in Blitar turned
into the forage type.
Author: Sri Umi Lestari, Ricky
Indri Hapsari
Journal Code: jppertaniangg150018
