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All Journal Indonesian Journal of Forestry Research JURNAL PERBENIHAN TANAMAN HUTAN BioEksakta : Jurnal Ilmiah Biologi Unsoed Jurnal Penelitian Hasil Hutan
Maman Turjaman
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Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Decision Sciences, Operations Research & Management Earth & Planetary Sciences Immunology & microbiology Materials Science & Nanotechnology Veterinary

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FEASIBILITY STUDY OF BUSINESS IN AGARWOOD INOCULATION AT DIFFERENT STEM DIAMETERS AND INOCULATION PERIODS Sri Suharti; Pratiwi Pratiwi; Erdy Santosa; Maman Turjaman
Indonesian Journal of Forestry Research Vol 8, No 2 (2011): Journal of Forestry Research
Publisher : Secretariat of Agency for Standardization of Environment and Forestry Instruments

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/ijfr.2011.8.2.114-129

Abstract

Indonesia signifies as the biggest agarwood producer country in the world. Its demand and price tend to increase and have brought about over exploitation of agarwood. Consequently, its population in nature has decreased significantly. To overcome the situation, since 1995, agarwood has been included in the CITES Appendix II. However, illegal exploitation remains persistent and reaches an excessive level. In order to deal with it, agarwood cultivation and its artificial production have been undertaken at several provinces in Indonesia. Some supporting factors for agarwood cultivation and artificial production are the availability of potential land for extensive cultivation, appropriate agro climate condition, simple cultivation technique and already being well adopted by farmers, the availability of necessary pathogen for agarwood inoculation, and the increasing demand with relatively high price. The research aims to analyze the feasibility study of agarwood inoculation business at several stem diameters (15 - 25 cm; 26 -35 cm and 36 - 40 cm) and periods of inoculation (1 - 5 years). Data were collected through field observation and literature study. The results showed that inoculation on agarwood producer tree stands at 12.5% interest rate afforded positive net present value (NPV),  internal rate of return (IRR) is much higher than market interest and benefit cost (B/C) ratio >2 for those three diameter classes. Furthermore, if agarwood harvesting is delayed until five years after inoculation, NPV,  IRR and B/C ratio would be much higher. It can be concluded that inoculation on agarwood producer tree stands (at appropriate age for inoculation) is feasible to be developed.
ANTI FUNGAL ACTIVITY OF WOOD EXTRACT OF Aquilaria crassna Pierre ex Lecomte AGAINST AGARWOOD-INDUCING FUNGI, Fusarium solani Eka Novriyanti; Erdy Santosa; Wasrin Syafii; Maman Turjaman; Irnayuli R. Sitepu
Indonesian Journal of Forestry Research Vol 7, No 2 (2010): Journal of Forestry Research
Publisher : Secretariat of Agency for Standardization of Environment and Forestry Instruments

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/ijfr.2010.7.2.155-165

Abstract

This paper provided information regarding artificial agar wood production. Fungi are considered as biological agent for agarwood formation and agarwood is assumed as tree defense mechanism product. This research was aimed at investigating the anti fungal activity (AFA) of Aquilaria crassna, one of the agar wood-producing trees, against Fusarium solani in vitro. Aquilaria crassna wood mill was extracted by 70% ethanol to investigate the anti fungal activity. The result are Aquilariacrassnaexhibited low extractives content, which was only 2.0% (w/w) and a low anti fungal activity in vitro, especially for ethanol extract. However, further fractionation and bioassay showed that the most active component was likely in the ethyl-acetate soluble fraction that exhibited strong anti fungal activity (52.5%) at 4.0% of concentration.
The Effect of Growth Regulator Substance on Shoot Cutting of Jamblang (Syzygium cumini (L.) Skeels Aris Sudomo; Maman Turjaman
Jurnal Perbenihan Tanaman Hutan Vol 6, No 2 (2018): Jurnal Perbenihan Tanaman Hutan
Publisher : Forest Tree Seed Technology Research & Development Center (FTSTRDC)/ Balai Penelitian dan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (245.677 KB) | DOI: 10.20886/bptpth.2018.6.2.93-105

Abstract

Development of jamblang (Syzygium cumini) as medicinal plant currently constrained by the aspects of cultivation technology (vegetative propagation), so the provision of medicinal plants for the mass scale was very difficult. The objective of this research was to evaluate the effect of five doses of  growth regulator substance on growth of S. cumini’s shoot cuttings. The active ingredient composition of hormone/ Growth Regulator Substance (GRS) in this study were Naphthalene Acetic Acid (NAA) 3 percent and Naphthalene Acetamide (NAAm) 0.75percent. The experiment was arranged in Completely Random Design using 5 concentrations of growth regulator substance namely 0g.10ml-1(control), 2g.10 ml-1, 4g.10ml-1, 10g.10ml-1 and powder (not dissolved). The results of this experiment proved that  4g.10 ml-1of growth regulator substance produce the highest height growth (29.84 cm or 21.74 percent increment), the highest number of leaves (23.72 pieces or 4.63 percent increment), the heaviest dry weight of stem and leaves (3.36 gram or 43.59 percent increment) and the highest top-root ratio (6.55 or 10.08 percent increment). The highest survival percentage was resulted from GRS powder treatment (80 percent or 18.81 percent increment), but did not significantly different to GRS treatment of 4g.10 ml-1 (77.33 percent). The application of 4g.10 ml-1 is recommended to use to produce the better growth of cuttings planted on soil.
Isolation and Characterization Of Arbuscular Mychorhiza Fungi from Gaharu Wood (Aquilaria spp.) Rhizosphere Dian Rachma Wijayanti; Maman Turjaman
BioEksakta : Jurnal Ilmiah Biologi Unsoed Vol 2 No 3 (2020): BioEksakta
Publisher : Fakultas Biologi Universitas Jenderal Soedirman

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20884/1.bioe.2020.2.3.3090

Abstract

In the last 30 years there have been increasing demand of agarwood. Unlimited hunting of agarwood causing it become threatened species. Aquilaria spp. is the main genus producing agarwood that considered as threathened species. Conserving Aquilaria spp. as germ plasm needs is essential against destruction. Arbuscular mycorrhizal fungi (AMF) have been used as inoculant to increase the growth of Aquilaria spp., but information about the existence of AMF in Aquilaria spp. rhizosphere has not been reported. This research was carried out with objective to identify AMF from Aquilaria spp. rhizosphere. Soil and root samples from rhizosphere of Aquilaria spp. taken from four location that is: Carita (A. malaccensis), Ciapus (A. filaria), Cifor (A. crasna & A. malaccensis), and Bantar Kemang (A. beccariana, A. crasna, & A. malaccensis). Roots staining was conducted with modified Phillips and Hayman procedure (1970). Soils sample was run dry wed and placed in pot culture with Pueraria javanica as the host plant. Spore was separated from pot culture using wet sieving and decanting method continued with centrifugation. The result showed the occurrences of AMF in Aquilaria spp. roots i.e. external hypha, internal hypha, coiled hypha, arbuscules, and vesicles. All AMF colony structure found in Aquilaria spp. roots show asosiation bettwen the plant and AMF. Four species of AMF were found i.e. Glomus sp.1, Glomus sp.2, Gigaspora albida, and Dentiscutata sp. Key Words: Isolation, Arbuscule Mycorrhizae Fungi, Rhizosfer, Agarwood
PEMANFAATAN KOMPOS KULIT KAYU MANGIUM UNTUK MEDIA PERTUMBUHAN CENDAWAN MIKORIZA ARBUSKULA DAN BIBIT Acacia mangium Willd. Sihati Suprapti; Erdy Santoso; Djarwanto; Maman Turjaman
Jurnal Penelitian Hasil Hutan Vol. 30 No. 2 (2012): Jurnal Penelitian Hasil Hutan
Publisher : BRIN Publishing

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2012.30.2.114-123

Abstract

Sterilized and unsterilized manginm bark which added with activators and composted for 30 days were used at a growth medium for mycorrhizal fungi and Acacia mangium seedlings. Degradation rate of the bark wus evaluated based on the changing content of organic carbon, total nitrogen, nutrient content, and its cation exchange capacity (CEC) Results showed that activators added on the compasting process of manpium bark reduced C/N ratio to 21.90 in sterilized bark and 25.30 in the ansterilized, respectively. The addition of actors tended to increase the nutrient content Le. N 0.82 -1.09%, P 0.22 -0.36%, and K. 0.36 -1.12%, and increase the value of CEC ints 31.3 to 32.7 me/100g Mycurrhizal colonization on medium means that composted mangium bark can be used both as growth and mycorrbizal carrier media. A high percentage of mycorrhizal colony was found in the medium made of sterilized mangium bark added with activators inoculated with Glomus sp. ir. 45%. The growth rate of A. mangium seedling on the mediume made of sterilized mangium bark added with activator tended to be bigher than that of the unsterilized bark. The highest growth was found on medium inoculated with Gigaspora sp., abile the largest stem diameter occurred on the medium inoculated with Glomus sp.
Co-Authors Aris Sudomo Dian Rachma Wijayanti Djarwanto Eka Novriyanti Erdy Santosa Erdy Santosa Erdy Santoso Irnayuli R. Sitepu Pratiwi Pratiwi Sihati SUPRAPTI Sri Suharti Wasrin Syafii