Handojo Hadi Nurjanto
Jurusan Budidaya Hutan Fakultas Kehutanan Universitas Gadjah Mada

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KARAKTER JAMUR CERATOCYSTIS SP. PENYEBAB PENYAKIT BUSUK BATANG PADA ACACIA DECURRENS DAN STATUS PENYAKITNYA DI TAMAN NASIONAL GUNUNG MERAPI, YOGYAKARTA Rahayu, Sri; Nurjanto, Handojo Hadi; Pratama, Rahman Gilang
Jurnal Ilmu Kehutanan Vol 9, No 2 (2015)
Publisher : Fakultas Kehutanan Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (234.729 KB) | DOI: 10.22146/jik.10193

Abstract

Acacia decurrens merupakan salah satu jenis tanaman yang tumbuh mendominasi kawasan Taman Nasional Gunung Merapi (TNGM), pasca erupsi Gunung Merapi tahun 2010. Sekitar 80% tegakan A. decurrens di kawasan tersebut menunjukkan gejala busuk batang akibat infeksi jamur Ceratocystis sp. yang umumnya dipicu oleh luka gerekan kumbang dari kelompok ambrosia. Penelitian bertujuan untuk : (1) mendeskripsikan karakter morfologi jamur Ceratocystis sp., serta kemampuannya beradaptasi pada beberapa jenis tanaman hutan, (2) mengevaluasi status penyakit busuk batang oleh jamur Ceratocystis sp. Karakter morfologi dan kemampuan adaptasinya pada inang akasia, melina, jabon, sengon, dan jati dilakukan di Laboratorium Perlindungan dan Kesehatan Hutan, Fakultas Kehutanan UGM. Survei untuk evaluasi status penyakit busuk batang dilakukan pada bulan Februari sampai Agustus 2014 di demplot restorasi pasca erupsi Merapi (luas 8,4 ha), dengan intensitas sampling 8%. Berdasarkan karakter morfologi, terdapat 2 isolat jamur Ceratocystis sp. yaitu asal lembah (L) dan dari bukit (B) dengan warna koloni krem, luas koloni 20-22 cm2 pada umur 14 hari, membentuk konidia menyerupai tong, dan silindris. Sifat lainnya yaitu memiliki kemampuan yang sama untuk tumbuh, mengkolonisasi, dan menginfeksi inang akasia, sengon, jabon, dan melina, tetapi tidak mampu tumbuh pada inang jati. Berdasarkan luas serangan, status penyakit busuk batang berkisar antara sangat umum sampai menyebar luas (luas serangan = 54-100%), dengan tingkat keparahan bekisar antara ringan sampai parah (intensitas penyakit = 15-67%).Kata kunci: Ceratocystis sp., Acacia decurrens, luas serangan, intensitas penyakit, Taman Nasional Gunung Merapi. Characteristic of stem rot diseases caused by Ceratocystis sp. on Acacia decurrens and its status in Gunung Merapi National Park, YogyakartaAbstractMount Merapi National Park (TNGM) has been dominated by Acacia decurrens after the eruption in 2010. Almost 80% of A. decurrens trees showed stem rot diseases caused by Ceratocystis sp. which may associate with stem wound induced by ambrosia beetle and other physical injuries. The research objective were (1) to characterize the morphological feature, in vitro growth, and ability to adapt, colonize as well as to infect akasia, jabon, sengon, melina and jati sedlings, (2) to evaluate the status of stem rot disease in TNGM demonstration plot. Laboratory work was conducted in order to study the morphological feature of the fungus, in vitro growth on PDA media, and to evaluate its compatibility to growth, colonize, and infect on 5th month seedling of akasia, sengon, jati, jabon and melina. Field monitorings were conducted from February to August 2014 at the restoration plot (8.4 ha) at 8% sampling intensity. Disease status was evaluated in order to ascertain the disease incidence and severity of stem rot disease at the demonstration plot area. Two Ceratocistys isolates found from the hill (B) and valley (L) had similar characteristics on morphologic features i.e. cream color, 20 to 22 cm2 colony size at 14 days growth in PDA media, having both cylindrical and barrel shaped conidia. The other characteristics of the Ceratocistys were an ability to growth, to colonize, and to infect akasia, sengon, melina and jabon, except on jati. The status of stem rot disease was ranged from highly common to widespread (disease incidence = 54%-100%) as the disease severity status was ranged from low to severe (disease severity = 15%-67%).
PERCEPATAN KEMAMPUAN BERAKAR DAN PERKEMBANGAN AKAR STEK PUCUK Shorea platyclados MELALUI APLIKASI ZAT PENGATUR TUMBUH IBA Hardiwinoto, Suryo; Riyanti, Rixa; Widiyatno, Widiyatno; Adriana, Adriana; Winarni, Widaryanti Wahyu; Nurjanto, Handojo Hadi; Priyo, Eko
Jurnal Pemuliaan Tanaman Hutan Vol 10, No 2 (2016): Jurnal Pemuliaan Tanaman Hutan
Publisher : Center for Forest Biotechnology and Tree Improvement (CFBTI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jpth.2016.10.2.63-70

Abstract

Shorea platyclados is one of fast-growing Dipterocarp species for enrichment planting in Logged-Over Area (LOA) of tropical rain forests. One of the constrain to supply the seedling for support enrichment planting is the irregular flowering of S. platyclados. Moreover, the vegetative propagation is an alternative method to provide the sustainable seedling for enrichment planting in the LOA. This experiment was carried out to assess the effects of IBA concentrations on rooting ability, the primary and secondary root lengths, and the accumulated number of primary and secondary roots on shoot cutting of S. platyclados. The research was conducted in Completly Randomized Design (CRD) with 5 replications. The treatment was five concentrations of IBA, i.e. 0 ppm, 25 ppm, 50 ppm, 75 ppm, and 100 ppm. The data were analyzed using one-way analysis of variance (one way ANOVA) to determine the effect of IBA concentration variation amongst the treatments. The Duncan Multiple Range Test (DMRT) was used for multiple comparisons among the means of treatment at tα=5%, Results showed IBA concentrations significantly affected the rotting ability, the primary and secondary root length of shoot cutting (P < 0.05). On the other hand, the number of primary and secondary roots was not significantly different among treatment (P > 0.05). For rooting ability, 100 ppm of IBA concentration was the highest of all treatments. Meanwhile, 75 ppm of IBA concentration was the best treatment for development of root, i.e. the number of primary roots, the length primary and secondary roots.
PENGARUH SIFAT FISIKA MEDIA TERHADAP KEMAMPUAN BERAKAR DAN PEMBENTUKAN AKAR STEK PUCUK Shorea playlados DI PT. SARI BUMI KALIMANTAN TENGAH Hardiwinoto, Suryo; Adriana, Adriana; Nurjanto, Handojo Hadi; Widiyatno, Widiyatno; Dhina, Fransisca; Priyo, Eko
Jurnal Pemuliaan Tanaman Hutan Vol 4, No 1 (2010): Jurnal Pemuliaan Tanaman Hutan
Publisher : Center for Forest Biotechnology and Tree Improvement (CFBTI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jpth.2010.4.1.37-47

Abstract

Seedling production of S. platyclados through vegetative propagation offers various advantages particularly mass production of good quality seedling in a certain time can be attained. Shoot cutting is affected by various factors including the physical properties of several media on rooting ability and early root development of S. platyclados shoot cuttings. Completely Randomized Design (CRD) was used with 6 replications. Three medium used were Dipterocarp wood sawdust, wood sawdust + rice husk (2/1), and rice husk charcoal. Result showed that wood sawdust bulk density was highest (0.36 kg/l) in compare to that of wood sawdust + rice husk (0.29 kg/l) and rice husk charcoal (0.17 kg/l). The bulk density has positively correlated (r = 0.97) with Water Holding Capacity (WHC) and negatively correlated with porosity (r = -0.99). Rooting ability of the shoot cutting in sawdust + rice husk (2/1) was highest (63%) in compare to that in wood sawdust (43%) and positively correlated with porosity (r=0.59). Early root development in the media did not show significant difference; however, the media of wood sawdust and wood sawdust + rice husk (2/1) tended to have a better early root development compare to rice husk charcoal.
MEDIA KOMPOS SERBUK GERGAJI KAYU SENGON DAN PUPUK LEPAS LAMBAT UNTUK MENINGKATKAN PERTUMBUHAN SEMAI PINUS MERKUSII DI KPH BANYUMAS TIMUR Hardiwinoto, Suryo; Saputro, Nur Adin Eko; Nurjanto, Handojo Hadi; Widiyatno, Widiyatno
Jurnal Ilmu Kehutanan Vol 4, No 2 (2010)
Publisher : Fakultas Kehutanan Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (509.966 KB) | DOI: 10.22146/jik.1567

Abstract

Effects of Composted Sawdust of Falcata Media and Slow Release Fertilizer to Promote  Pinus merkusii Seedling growth in Banyumas Timur FMUPhysical and chemical properties of the potting media, especially porosity and nutrient availability, are required to produce good quality seedlings of pine (Pinus merkusii Jungh et de Vries). Composted sawdust of sengon (Paraserianthes falcataria) wood is a potential material to be used for growing media of pine seedlings. However, since this material contains low nutrients, addition of a slow release fertilizer is required to meet the nutrient demand of seedling growth. The objective of this research was to determine the effects of wood sawdust compost and slow release fertilizer on the growth of pine seedlings. The experiment was arranged in a completely randomized design with two factors and four replications. The first factor was the rate of sawdust compost and the second factor was the rate of slow release fertilizer. Height and root-collar diameter were measured at 6 months of age. As the results, sawdust compost and slow release fertilizer gave a significant effect on height and diameter growths. However, the effect of sawdust compost on seedling growth depended on the rate of fertilizer. Combination treatment that gave the best seedlings growth was 100% sawdust compost + 0% soil (and 12 g fertilizer /1.5 liter media). The seedlings applied with this treatment had the mean height of 8.72 cm and diameter of 2.24 mm, which were significantly greater than the control with the mean height and mean diameter of 1.87 cm and 1.15 mm respectively.
Respons Semai Jati (Tectona grandis) Unggul pada Beberapa Tingkat Konsentrasi Sulfur Lestari, Puji; Arifriana, Ridla; Nurjanto, Handojo Hadi
Jurnal Sylva Lestari Vol 7, No 2 (2019): Mei
Publisher : Universitas Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jsl27128-138

Abstract

Tree improvement program has invented a superior teak with an ability to improve its productivity. Yet the information about basic nutrient requirement of superior teak is less known. This study aimed to determine the optimal concentration of sulphur for the best growth of superior teak seedling and to identify the morphological symptoms of teak seedlings affected by several concentration levels of S. This study was conducted at nursery on six months old teak seedlings. The experimental design was Completely Randomized Design (CRD) with four different solution treatments with three replication each. The treatments are K (control, aquadest does not contain nutrients), S0 (solution contain nutrients except sulfur), S1 (solution contain nutrients with 0,5 full strength of S), and S2 (solution contain nutrients with full strength of S). Each treatment was replicated 3 times. Parameter observed included height of seedling, diameter of seedling, nodal distance of seedling, amount of leaves, size of leaves and morphological symptoms of leaf. The results showed that at concentration of nitrogen (N), phosphor (P), potassium (K), calcium (Ca), and magnesium (Mg) in full strength level, superior teak seedling which treated by S1 (S concentration of 421 ppm) resulted the best growth. However, morphology of teak leaves in all treatment showed abnormal.Key words: growth, morphology, sulphur, superior teak