Keberadaan Hama Boleng (Cylas sp.) dan Tingkat Hasil Beberapa Kultivar Ubi Jalar (Ipomoea batatas L.)

Sweetpotato (Ipomoea batatas L.) is one of the tuber crops that serves as an important source of carbohydrates besides rice, maize, and cassava. Pest problems are one of the main obstacles in sweetpotato production and have the potential to cause yield loss. The sweetpotato weevil (Cylas sp.) is the primary pest affecting sweetpotato crops. This study aimed to determine the level of damage caused by sweetpotato weevil on six sweetpotato cultivars. The research used an experimental method through a field trial. The experiment was designed using a Randomized Complete Block Design (RCBD) consisting of six sweetpotato cultivar treatments (CV), namely Lato-lato (CV1), Cilembu (CV2), Thailand (CV3), Kentang (CV4), Ase (CV5), and Purple (CV6). Each treatment was replicated four times. The results showed that the presence of sweetpotato weevil caused low to moderate levels of damage. The highest tuber damage intensity was found in the Lato-lato cultivar at 27.80%, while the lowest was in the Ase cultivar at 11.99%. The highest yield was obtained from the Thailand cultivar with an average of 6.44 tubers/plant and a weight of 0.68 kg/plant. The lowest yield was found in the Ase cultivar with 3.44 tubers/plant and a weight of 1.05 kg/plant.