This research aimed to know the main pest type and production of “liberika tungkal komposit (libtukom)” coffea plant (coffea sp.) in Betara District, West “Tanjung Jabung. “ Regency. This research was conducted in August to September 2016 at three villages e.g. Parit Tomo, Serdang Jaya, and Parit Panglong and two districts e.g. Mekar Jaya, and  Betara.  Survey method was used in this research by observing the farmer that managed their ” libtukom” coffee farming.   The data collected were primary and secondary data. This experiment result showed that   the main pests type of “libtukom” coffee plant   is  “hypothenemus hampei” insect pest.  Average intensity of attacks in the three research areas is 10.33% or it’s around 9.11% to 10.80%. While “libtukom” coffee production and its productivity in the three research areas is  0,66 ton ha-1 year-1 to 0,67 ton ha-1 year-1.Keywords : main pest, intensity of attacks, liberika tungkal coffea.AbstrakPenelitian ini bertujuan untuk mengetahui jenis hama utama dan produksi tanaman kopi  liberika tungkal komposit (libtukom) (coffea sp.) di kecamatan Betara kabupaten Tanjung Jabung Barat. Penelitian ini dilaksanakan pada bulan Agustus sampai September 2016  di Desa Parit Tomo,  Serdang Jaya dan Parit Panglong, Kelurahan Mekar Jaya, Betara.  Metode pengumpulan data pada penelitian ini menggunakan metode survei. Survei dilakukan pada petani sampel yang melakukan usaha tanaman kopi “libtukom”. Data yang dikumpulkan  adalah data primer dan data sekunder. Hasil penelitian menyimpulkan bahwa jenis hama utama yang menyerang tanaman kopi “libtukom” di daerah penelitian adalah hama jenis serangga hypothenemus hampei. Rata-rata intensitas serangan di tiga daerah penelitian sebesar 10,33% atau berkisar antara 9,11% - 10,80%. Sedangkan produksi dan produktivitas kopi “libtukom” di tiga daerah penelitian masing-masing berkisar antara 0,66 ton ha-1 tahun-1 sampai 0,67 ton ha-1 tahun-1.Kata kunci : hama utama, tingkat serangan, kopi liberika tungkal

This study aims to determine the level of damage to coffee beans in storage at different seed moisture content caused by the pest A. fasciculatus. The research was carried out at the Basic Laboratory of the Faculty of Agriculture, Batanghari University, Jambi, from August to November 2021. Liberika coffee beans came from the Mekar Jaya II farmer group in Parit Lapis, Betara, Tanjung Jabung Barat. The study used a one-factor completely randomized design (CRD) with the treatment being tested for differences in water content including: k0 = (control) 100 liberica coffee beans, 10.7% moisture content without A. fasciculatus insects, k1 = 100 liberica coffee beans, water content 10.7 % + 10 A. fasciculatus insects, k2= 100 liberica coffee beans, 11.4% moisture content + 10 A. fasciculatus insects, and k3= 100 liberica coffee beans, 15.1% moisture content + 10 A. fasciculatus insects, each treatment was repeated as much as 8 times. The parameters observed were the characteristics of the coffee bean defect value, increase in moisture content, change in weight from the beginning to the end of the study, temperature and humidity. Data analysis used variance analysis (analysis of variance), if the treatment was significantly different, it was continued with the Duncan New Multiple Range Test (DNMRT) at the level of 5%. The results of the analysis showed that the best treatment was at k1 (10.7% moisture content) with the lowest damage level of 30.00%. It can be concluded that, the higher the moisture content of coffee beans in storage, the higher the attack rate of A. fasciculatus

Penelitian ini dilaksanakan di Desa Sungai Asam Kabupaten Kerinci, Desa Siulak Kecil Hilir, Hamparan Sungai Bermas, Kabupaten Kerinci, Desa Tangkit Kabupaten Muaro Jambi dan Desa Sungai Buluh Kabupaten Batanghari. Dari analisis data yang didapatkan dari pemasangan dua perangkap yellow trap dan pitfall, hasil identifikasi menunjukkan bahwa penyebab dari serangan penggerek batang Tebu adalah Kumbang (Rhabdoscelus obscurus) termasuk dalam family Curculionidae dan subfamily Rhynchophorinae Ordo Coleoptera , diindikasikan hama tersebut merupakan hama utama pada tanaman Tebu yang pradewasanya dikenal juga dengan hama uret. Hama uret ini dapat merusak bagian dalam batang tanaman tebu hingga menyebabkan kematian.Key words : tanamana Tebu, Rhabdoscelus obscures. RhynchophorinaeABSTRACTThis research was carried out in Sungai Asam Village, Kerinci Regency, Siulak Kecil Hilir Village Sungai Bermas , Kerinci District, Tangkit Village, Muaro Jambi Regency, and Sungai Buluh Village, Batanghari Regency.  Analysis of the data obtained from the installation of two yellow trap and pitfall traps, identification results indicate that the cause of the attack of sugarcane stem borer is the Beetle (Rhabdoscelus obscurus) included in the family Curculionidae and subfamily Rhynchophorinae Ordo Coleoptera indicated that these pests are the main pests in sugarcane plants which are commonly known as uret pests. This uret pest can damage the inside sugar cane stems to cause death.Key words : sugarcane, Rhabdoscelus obscures. Rhynchophorinae