No abstract

Damar tree (Agathis loranthifolia Salisb.) is a multipurpose tree species which its wood and resin have high commercial value. Unfortunately planting stock production is problematic as the seed belongs to semirecalcitrant seed. Vegetative propagation offers a feasible solution for planting stocks production. The aim of this study wass to find suitable media (combination of zeolite, cocodust and burned paddy husk) and ranges of hormone concentrations for shoot cutting of damar. The study was carried out at the glasshouse equipped with KOFFCO system. The result showed that media and hormone significantly affected root formation of the cuttings. The highest rooted cutting (67%) was achieved by mix media of coconut dust and paddy husk of 2 : 1 (v : v). Optimum root growth was stimulated by 200 ppm of IBA.

The healthy of forest ecosystem is one of the criteria for assessing sustainable forest management (SFM) The healthy stands is also general requirement of seed sources. Forest Health Monitoring (FHM) is an intensive method for monitoring and assessing ecosystem health. The indicators of FHM are site quality, tree vitality, productivity and biodiversity. The research aimed to assess the health status of seed sources stands of . in Forest Area for Shorea spp Special Purposes Haurbentes based on FHM method. The results showed that the site quality was high for CEC, pH was low, the distribution of diameter at breast height were 39.3-66.1 cm, the level of tree damage was low,the crown condition was unhealthy, and the diversity of tree species was low. The health status of . seed source stand Shorea spp in FASP Haurbentes was fair and could appointed as a seed source with identified seed stands level. ABSTRAKKesehatan ekosistem hutan adalah salah satu kriteria penilaian pengelolan hutan yang lestari. Kesehatan ekosistem hutan juga menjadi dasar penunjukan sumber benih.(FHM) adalah metode yang dapat Forest Health Monitoring digunakan untuk pemantauan dan penilaian kondisi kesehatan ekosistem secara intensif Indikator ekologis yang . dinilai adalah kualitas tapak, vitalitas pohon, produktivitas dan biodiversitas. Metode penelitian menggunakan proses jaringan analitik. Tujuan penelitian adalah menilai status kesehatan tegakan sumber benih spp. di Shorea KHDTK Haurbentes berdasarkan metode FHM. Hasil penelitian menunjukkan bahwa kualitas tapak berdasarkan nilai kapasitas tukar kation (KTK) tergolong tinggi, pH tanah tergolong rendah, diameter pohon antara 39,3-66,1 cm, tingkat kerusakan pohon termauk rendah, kondisi tajuk tidak sehat dan dan keragaman jenis pohon termasuk kategori rendah. Status kesehatan sumber benih spp. di KHDTK Haurbentes tergolong sedang dan layak Shorea ditunjuk sebagai sumber benih dengan kelas tegakan benih teridentifikasi.

The study was aimed to determine the potency of seeds and seedlings production of malapari in relation to the procurement of planting stocks for plantation programmes. The methods were observing of flowering and fruiting development, measuring of seeds production and examining of seedlings quality and quantity. It was concluded that a proper fruit collecting time can be determined from the period of flowering and fruiting development and reproductive potency can be utilized for estimating the potency of seeds production. Stem diameter of the tree can be used to predict the produced seeds and seedlings. Seedlings quality can be improved by giving a treatment of 2.5 g mycorrhiza + 1.0 g NPK fertilizer.

Indonesia is a tropical country with an area of rain forests around 128 million ha. Forests have economic, social and environmental functions, therefore those functions must be sustained. Seeds are a very important part for maintaining the sustainability of forest functions, by providing good quality of seeds and seedlings. Nearly 70% of the seeds of forest plants in Indonesia are recalcitrant and intermediate, dominated by species of Dipterocarpaceae, Myrtaceae, Araucariaceae, and Verbenaceae. In general, the characteristics of the seeds can be divided into 3 groups based on their sensitivity of drying and storability, namely orthodox, recalcitrant and intermediates. The viability of orthodox seeds can be maintained for long storage periods in low temperatures, whereas recalcitrant seeds are difficult to store for long periods and loseitsviability in a short time. Intermediate seeds are in between of the two characters, that the viability can be kept for a longer time (generally less than 1 year) than recalcitrant seeds. The main problems for recalcitrant and intermediate seeds are their short life time and for some species, the flowering and fruiting periods do not occur every year, especially for the species of Dipterocarpacae. These problems makedifficult to get large quantities of high-quality seeds. Therefore, seed handling techniques of recalcitrant and intermediates seeds are urgently needed. A proper seed handling is the key to maintain the physical, physiological and genetic quality of seeds which should be carried out by involving several activities including techniques of seed production, seed testing, seed storage, and nursery technique.