Vascular Streak Dieback: Penyakit Baru Tanaman Kakao di Sumatera Barat

Abstract

Vascular streak dieback (VSD) symptoms was reported recently in several cacao plantations in West Sumatera. Disease incidence reached 58.82–100% with disease intensity of 24.29–44.71%. In some cases, dead plant was also found. Fungal isolation was performed to identify the agents associated with VSD. Plant samples showing VSD symptoms was collected from 3 locations of cacao production center in West Sumatera, i.e. Limapuluh Kota regency, Padang Pariaman regency, and Padang city. Small pieces of leaf and twig were plated on water agar and potato dextrose agar medium for fungal isolation. Morphology of hifa, basidiocarp, and basidiospora observed from fungi colonies indicated the presence of Ceratobasidium theobromae on infected plant samples. This is the first report on the association of C. theobromae on cacao in West Sumatera.

Kajian Tekno Ekonomi Paket Teknologi Bakteri Perakaran Pemacu Pertumbuhan Tanaman (Bp3t) Pupuk Kandang Dan Nano Pestisida Serai Wangi Pada Usaha Tani Kakao Di Kabupaten Lima Puluh Kota

“…Salah satu penyakit utama yang ditemukan pada tanaman kakao yaitu penyakit VSD yang disebabkan oleh jamur patogen Oncobasidium theobromae. Di Sumatera Barat penyakit ini pertama kali dilaporkan pada tahun 2015 dengan insidensi 58,82% -100% dan intensitas 24,29% -44,7% (Trisno et al, 2016). Kerugian akibat penyakit VSD di seluruh dunia dapat mencapai 30.000 ton per tahun setara dengan US$ 28 juta (David, 2018).…”

Diseminasi Teknologi Pupuk Kandang Sapi Plus Rizobakteri Pada Kelompok Tani Kakao Di Kabupaten Limapuluh Kota

“…Penyakit VSD merupakan salah satu kendala utama dalam budi daya kakao karena perkembangan dan penyebarannya yang cepat. Penyakit ini merupakan penyakit baru pada tanaman kakao di Sumatera Barat dimana kejadian penyakit mencapai 100% dengan keparahan 24.29-44.71% (Trisno et al, 2016), data mengenai dampak ekonomi dari serangan penyakit ini masih belum ada dikemukakan.…”

Current Status on Cacao Disease Incidence in Central Sulawesi

“…In Sulawesi island, VSD was reported initially in 2002 in Polmas and Pinrang, South Sulawesi (Rosmana, 2006). VSD has been reported in West Sumatra that causing 58.82 to 100% disease incidence (Trisno et al, 2016). In Central Sulawesi, the previous investigation stated that the pathogen of VSD able to attacked cacao varieties, however, cacao planted in Sidondo District more susceptible compared to other (Febrianto et al, 2016).…”