Abstract
Angiosperm trees develop tension wood on the upper side of leaning stems to reorient the direction of stems towards their normal positions in response to a gravitational stimulus. The development of gelatinous fibers with thick inner gelatinous layers (G-layers) might elevate tensile stress required for such reorientation in many angiosperm species. This study aims to investigate negative gravitropism and tension wood formation in response to a gravitational
Abstract
Several non-edible plants, including kepuh (Sterculia foetida), are used as feedstock for biodiesel production in Indonesia. This study aimed to evaluate site-specific variations in biodiesel yield, characteristics, and chemical composition from seeds of S. foetida from 25 locations on Java Island and select superior seed sources for renewable energy development based on the quality of the produced biodiesel. The biodiesel yields ranged from 23.6% to 26%. The
Abstract
Pinus merkusii shows great potential as a resin-producing wood in Indonesia, with the global demand for pine resin reaching 1 million tons annually. This study investigated the effect of ethephon on the anatomical properties of P. merkusii, particularly the resin duct that affects resin productivity, to increase the efficiency of pine resin tapping. Ethephon was mixed with Vaseline to create concentrations of 0%, 2%, 4%, and 8% and then applied to the seedlings
Abstract
Coffee is commonly cultivated under agroforestry systems, including dry-field and homegarden. These systems were differentiated based on their proximity to the settlements, which might influence the species composition. This study aimed to observe plant composition, diversity, vegetation structure, and microclimate in coffee agroforestry systems and the physiological conditions of coffee. The experimental design was based on purposive sampling. A total of 100
Fakultas Kehutanan Universitas Gadjah Mada (UGM) kembali menyelenggarakan kegiatan Praktik Silvikultur Intensif (SILIN) di Tahun Ajaran 2024/2025. Praktik Lapangan minat Silvikultur ini diikuti oleh 73 mahasiswa yang terbagi dalam 15 kelompok, didampingi oleh 23 Dosen Pembimbing Lapangan serta petugas lapangan dari masing-masing Kesatuan Pengelolaan Hutan (KPH).
Pada Tahun Ajaran 2024/2025 ini, Praktik SILIN dilaksanakan di sembilan KPH wilayah Perum Perhutani
