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DEKOMPOSISI DAUN DAN RANTING MANGIUM OLER EMPAT JENIS FUNGI PELAPUK Djarwanto, Djarwanto; Suprapti, Sihati
Jurnal Penelitian Hasil Hutan Vol 27, No 1 (2009): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2104.07 KB) | DOI: 10.20886/jphh.2009.27.1.1-10

Abstract

Proses dekomposisi daun dan ranting mangium (Acacia mangium) yang tertimbun di hutan, secara alami berjalan lambat, sehingga berpotensi menjadi sumber bahan kebakaran hutan. Empat jenis fungi pelapuk (HHB-341, HHB-346, HHB-347 dan HHB-348) digunakan sebagai aktivator untuk dekomposisi daun dan ranting mangium yang dibasahi dengan air suling atau air suling yang mengandung kapur 1 %, kemudian diinkubasikan selama 3 bulan. Tingkat degradasi contoh uji dievaluasi berdasarkan perubahan kandungan karbon organik, nitrogen total, kadar unsur hara dan kapasitas tukar kation (KTK). Hasilnya menunjukkan bahwa penyusutan bobot contoh uji yang diinokulasi fungi lebih besar dibandingkan dengan kontrol (tanpa inokulasi fungi). Inokulasi fungi menurunkan nisbah C/N menjadi 23,3-25,7. Nisbah C/N pada contoh yang diinokulasi fungi cenderung lebih rendah dibandingkan dengan kontrol. Nilai C/N yang rendah dijumpai pada contoh uji yang diinokulasi HHB-341 & HHB-348 yaitu 23,3 & 23,4. Inokulasi fungi meningkatkan unsur hara, menjadi N 0,67-0,83%; P 0,25-0,33%; K 0,32-0,51%; dan nilai KTK 28,01-34,68 me/100g dibandingkan dengan daun dan ranting mangium segar.
UTILIZATION OF AREN (Arenga pinnata Merr.) SAWMILLING WASTE FOR EDIBLE MUSHROOM CULTIVATION MEDIA Djarwanto, Djarwanto; Suprapti, Sihati
Indonesian Journal of Forestry Research Vol 3, No 1 (2016): Indonesian Journal of Forestry Research
Publisher : Secretariat of Forestry Research and Development Agency

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/ijfr.2016.3.1.9-18

Abstract

The utilization of unproductive aren (Arenga pinnata) for timber produces waste i.e. sawdust and core. The waste containing of lignocellulosic materials was studied for cultivation medium of edible mushroom. The sawdust was supplemented with rice bran, CaCO3, gypsum, fertilizers, and distilled water. This composite medium was then sterilized in an autoclave on 121 ⁰C, in pressure of 1.5 atmosfir for 30 minutes. After cooling the medium was inoculated with pure culture of four different mushrooms species and incubated in a special room. Biological conversion efficiency (BE) was calculated based on the weight of the fresh mushroom yield to the weight of dry substrate and presented in percentage. Other waste in the form of sawn timber core was cut into 10 cm in wide 5 cm in thick and 120 cm in length, then directly inoculated with six species of mushrooms through drilled holes, then were slanted on bamboo supporter in an angle of around 60⁰ in a hut made of bamboo. The mushroom’s was harvested daily after the mature fruiting body grown. Results showed that the material supplementation on sawdust most likely to improve the mushrooms yield. Found that the BE values are 21.97-89.45 % (for Pleurotus flabellatus), 15.36-105.36 % (for P. ostreatus), 63.88-76.86 % (for P. sajor-caju), and up to 62.88% (for Lentinula edodes). The average yield from a piece of sawn timber core was 210g (for P. ostreatus), 368g (P. flabellatus), 331g (P. sajor-caju), and 48g (Auricularia polytricha), however, P. cystidiosus and L. edodes on aren stem core were fail to grow.
KETAHANAN LIMA JENIS KAYU ASAL LENGKONG SUKABUMI TERHADAP BEBERAPA JAMUR PELAPUK Suprapti, Sihati; Djarwanto, Djarwanto; Hudiansyah, Hudiansyah
Jurnal Penelitian Hasil Hutan Vol 29, No 3 (2011): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (2907.737 KB) | DOI: 10.20886/jphh.2011.29.3.259-270

Abstract

Lima jenis kayu kurang dikenal yaitu ki lubang (Calophyllum grandiflorum JJS), ki kuya (Ficus vasculosa Wall. Ex Miq.), ki bulu (Gironniera subaequalis Planch), ki hantap (Sterculia oblongata R.Br.) dan ki bancet (Turpinia sphaerocarpa Hassk.), diuji ketahanannya terhadap jamur menggunakan metode Kolle-flash. Contoh uji setiap kayu diambil dari bagian tepi dan dalam dolok dari dua tegakan pohon berbeda. Hasil penelitian menunjukkan bahwa kayu ki lubang, ki bancet dan ki bulu termasuk kelompok kayu agak- tahan (kelas III), sedangkan kayu ki hantap dan ki kuya termasuk kelompok kayu tidak-tahan (kelas IV). Kehilangan berat contoh yang diambil dari tegakan pohon I lebih rendah dibandingkan dengan pohon II, walaupun keduanya termasuk kelompok kayu tidak-tahan (kelas IV). Sedangkan kehilangan berat kayu bagian dalam umumnya lebih rendah dibandingkan dengan kayu bagian tepi dolok, yang termasuk dalam kelompok kayu tidak-tahan (kelas IV). Kehilangan berat tertinggi terjadi pada ke dua bagian tepi dan tengah dolok pohon contoh I dan II kayu ki hantap dan ki kuya yang diuji dengan Pycnoporus sanguineus HHBI-324 yaitu > 40%.
KETAHANAN LIMA JENIS KAYU ASAL SUKABUMI TERHADAP JAMUR PERUSAK KAYU Suprapti, Sihati; Djarwanto, Djarwanto
Jurnal Penelitian Hasil Hutan Vol 26, No 2 (2008): Jurnal Penelitian Hasil Hutan
Publisher : Pusat Penelitian dan Pengembangan Hasil Hutan

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jphh.2008.26.2.129 - 137

Abstract

Lima jenis kayu yaitu huru gacling (uisea odorifera Val.), sampora (Colonajavanica BL), kisampang (Evodia aromatica Bl.), nyatuh (Pouteria duclitan Bachni.) dan randu (Ceiba petandra Gaertn.), diuji ketahanannya terhadap jamur menggunakan standar DI -52176 yang dimodifikasi. Contoh uji kayu diambil dari bagian tepi dan dalam dolok. Hasil penelitian menunjukkan bahwa huru gading masuk ke dalam kelompok kayu agak-tahan (kelas III), sedangkan kayu sampora, kisampang, nyatuh dan randu masuk ke dalam kelompok kayu tidak-tahan (kelas fV). Kehilangan berat kayu bagian dalam umumnya lebih rendah dibandingkan dengan kayu bagian tepi, namun keduanya masih masuk ke dalam kelompok kayu tidak tahan (kelas fV). Kehilangan berat tertinggi terjadi pada kayu kisampang bagian tepi yang diuji dengan Pycnopoms sa11g11i11e11s HHB-324 (58,6%). Sedangkan kehilangan berat terendah terjadi pada kayu huru gading bagian dalam yang diuji dengan Pbanerocbaetechrysosporium (0,5%). Kemampuan melapukkan kayu tertinggi terjadi pada P. sang11i11e11sHHB-324, diikuti Tjro11rycespalustns.
SIFAT FISIS KAYU BERKUALITAS RENDAH DARI RIAU SETELAH MELALUI PROSES PENGAWETAN POHON DENGAN TEKNIK BANDAGE DAN INFUS Sribudiani, Evi; Somadona, Sonia; Sulaeman, Rudianda; Syafrinal, Syafrinal; Yusuf, Sulaeman; Amin, Yusup; Tarmadi, Didi; Pramasari, Dwi Ajias; Damayanti, Ratih; Djarwanto, Djarwanto
Wahana Forestra: Jurnal Kehutanan Vol. 14 No. 2 (2019)
Publisher : Fakultas Kehutanan Universitas Lancang Kuning

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/forestra.v14i2.3515

Abstract

The potential of high-quality wood for various purposes over the past decade is very difficult to obtain. This is due to the high rate of doforestation and forest degradation, especially in Riau Province. Examples of the use of high-quality wood, especially in Riau Province, is as material for creating 'pathways' in the context of preserving track culture in the Kuantan Singingi Regency. The purpose of this study is to determine the physical properties of red balam wood and bintangur that grow in Riau before and after the preservation process, and determine the strength class of red balam wood and bintangur that grows in Riau. The research was carried out on the starur trees and red balam with a diameter of 34-38 cm, tree height 18-22 m. The tree sample comes from the Rumbio customary forest and the Minas Tahura KPHP Riau Province. Examination of physical properties using British standards in 1957. The results showed that based on specific gravity, the red balam wood and bintangur before preserved and included as strong class II. The average moisture content of each wood is 14-30%. The largest wood shrinkage development in each wood occurs at the base of the wood.
Biodeteriorasi Semilaboratoris Daun dan Ranting Mangium dengan Aktivator Jamur Saprofitik (Semi-Laboratory Scale Biodeterioration of Mangium Leaves and Twigs with Saprophytic Fungal Activators) Djarwanto Djarwanto; Sihati Suprapti
Jurnal Ilmu dan Teknologi Kayu Tropis Vol 15, No 1 (2017): Jurnal Ilmu dan Teknologi Kayu Tropis
Publisher : Masyarakat Peneliti Kayu Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (236.696 KB) | DOI: 10.51850/jitkt.v15i1.358

Abstract

Logging operation of mangium (Acacia mangium)’s forest generates enormous amount of wastes, such as cut-wood pieces, wood barks, twigs, and leaves.  The wastes, mainly twigs and leaves are left unutilized on logging sites.  Biodeterioration of these wastes is slow and therefore disturb local nutrient cycle.  In the present researches,  biodeterioration of mangium’s twigs and leaves were accelerated by the use of eight (8) saprophytic rotting-fungi activators.  Biodeterioration was assessed using organic-carbon content, total-nitrogen content, nutrient content, and cation-exchange capacity (CEC).  It was found that the C/N ratio after 30 and 90 days fungal inoculation decreased to 23-32 and 16-23, respectively.  C/N-ratios of lower than 20 were achieved by the use of Pycnoporus sanguineus (isolate HHBI-317), Marasmius sp, Polyporus sp., and Schizophyllum commune innoculated for 90 days.  Inoculation both for 30 and 90 days increased CEC value to >27 me per 100 g.  The high CEC value increased their adsorption capacity, storage capacity, and nutrient availability needed for plant growth.Keywords: Acacia mangium, biodeterioration, eight activator fungal species, inoculan, logging wastes, nutrient content.