| Abstrak/Abstract |
A devastating disease named vascular-streak dieback (VSD) caused by basidiomycete Oncobasidium theobromae was firstly found in Papua New Guinea (PNG) in the 1960s then now causes losses among cacao seedlings and kills branches in mature cacao trees throughout Southeast Asia and parts of Melanesia. In Indonesia, this disease was recently reported as an important emerging disease that destroyed cacao plantation in Sumatera, Sulawesi and East Java. Yogyakarta is one of cacao plantation center in Indonesia but current report of this disease status has not been found. Therefore, survey of VSD cacao disease was undertaken in this research which were conducted in Gunung Kidul and Kulon Progo Regency, the central of cacao plants in Yogyakarta Special Province. The result showed that generally Cacao VSD was found more severe in Gunung Kidul than in Kulon Progo. Disease incidence of cacao VSD in Gunung Kidul varied from 30 % - 100 %; with disease intensity varied from 7.5 % - 60 %. In Kulon Progo, disease incidence varied from 0 % - 70 % with disease intensity varied from 0 % - 25 %. Cacao plantation with routine pruning showed lower disease intensity of VSD disease. This survey indicated that current status of Cacao VSD is critical as one of emerging plant diseases in Indonesia. |
