EVALUASI PERTUMBUHAN DAN IDENTIFIKASI JENIS HAMA PASAK BUMI (Eurycoma longifolia Jack) DI ARBORETUM SEMPAJA SAMARINDA

© 2021 BPTPTH All rights reserved. Open access under CC BY-NC-SA license.doi: //doi.org/10.20886/bptpth.2021.9.2.107-118 107 EVALUASI PERTUMBUHAN DAN IDENTIFIKASI JENIS HAMA PASAK BUMI (Eurycoma longifolia Jack) DI ARBORETUM SEMPAJA SAMARINDA ( Growth evaluation and identification of caterpillar species on Pasak Bumi (Eurycoma longifolia Jack) at Arboretum Sempaja Samarinda) *Ngatiman1, Deddy Dwi Nur Cahyono2 dan/and Lydia Suastati1 1) Balai Besar Penelitian dan Pengembangan Ekosistem Hutan Dipterokarpa Jl. A. Wahab Syahrani No. 68 Sempaja Selatan, Kalimantan Timur, Indonesia 2)Balai Penelitian dan Pengembangan Teknologi Perbenihan Tanaman Hutan Jl. Pakuan Ciheuleut PO BOX 105; Telp 0251-8327768, Bogor, Indonesia e-mail: deddydwi@yahoo.com Naskah masuk: 3 September 2021; Naskah direvisi: 20 Oktober 2021; Naskah diterima: 24 Desember 2021 ABSTRACT Pasak bumi (Eurycoma longifolia Jack) is a type of medicinal plant that was planted in the Sempaja Arboretum, Samarinda. The plant flowers and bears fruit every year. Problem found that it often experiences flowering, but only a small part of it becomes fruit. Besides that, there are also caterpillar infestation that attack the leaves, flowers and fruit of the pasak bumi. This research aims to evaluate the growth and identify species of caterpillar infestationon the pasak bumi at Arboretum Sempaja Samarinda. The research method is by measuring growth and species indentifying of caterpillar based on morphological feature that infestation for the period November 2019 to May 2021. The results of measurements on 25-year-old pasak bumi plants are 4.65 m high and 5.43 cm in diameter, with a height growth range of 0.17 m per year and 0.2 cm per year for diameter. Flowering occurred 6 times, but only 16.67% were able to produce fruit. The highest flowering was 91.67% in the November 2019 period, while the highest fruiting was 16.67% in May 2021. Atteva sciodoxa (Lepidoptera : Yponomeutidae) caterpillar infestation occurred in every flowering and fruiting period. The most caterpillar infestation were 91.67% in November 2019 and the lowest was in November 2020 (33,34%). Keyword: Atteva scidoxa, Eurycoma longifolia, growth