This Research Aimed to Study Status of Arbuscular Mycrorrhizal Fungus (AMF) in Mangrove and Coastal Forest Post-tsunami Disaster, and to Study the Relationship of Soil Phosphorus Content and Number of AMF Spores and AMF Infection of Mangrove and Coastal Forest Post Tsunami Disaster. Research Results Show That There Were Variability in Spore Numbers in the Field Studied. the Spore Numbers in Mangrove Forest Were Found as 359, 235, 118 and 160 Spores Per 50 G of Soil in Meulaboh, Banda Aceh, Pidie and Nias Respectively. Meanwhile, in Coastal Forest Were 587, 297, 265 and 158 Spores Per 50 G in Meulaboh, Banda Aceh, Pidie and Nias Respectively. the Root of Rhizophora SP. and Casuarina Equisetifolia Were Colonized by AMF Both in Mangrove and Coastal Forest. Number of Spores Were Negatively Correlated to Soil Phosphorus Content, However, There Were Tendency of Positive Correlation Between Root Infection and Soil Phosphorus Content. Key Words: Coastal Forest, Mangrove Forest, Mycorrhiza

This research aimed to study status of arbuscular mycrorrhizal fungus (AMF) in mangrove and coastal forest post-tsunami disaster, and to study the relationship of soil phosphorus content and number of AMF spores and AMF infection of mangrove and coastal forest post tsunami disaster. Research results show that there were variability in spore numbers in the field studied. The spore numbers in mangrove forest were found as 359, 235, 118 and 160 spores per 50 g of soil in Meulaboh, Banda Aceh, Pidie and Nias respectively. Meanwhile, in coastal forest were 587, 297, 265 and 158 spores per 50 g in Meulaboh, Banda Aceh, Pidie and Nias respectively. The root of Rhizophora sp. and Casuarina equisetifolia were colonized by AMF both in mangrove and coastal forest. Number of spores were negatively correlated to soil phosphorus content, however, there were tendency of positive correlation between root infection and soil phosphorus content

Prosiding Seminar Hasil - Hasil Penelitian IPB 2010

Hasil penelitian tahun pertama menunjukkan bahwa stek pucuk anakan tumih menghasilkan persen tumbuh lebih dari 80 % sedangkan untuk geronggang agak rendah yaitu 50 %. Untuk jenis tumih pertumbuhan akar dan tunas cukup memuaskan perlakukan hormon penumbuh menghasilkan pengaruh yang signifikan. Pembiakan secara generatif dari biji hasilnya kurang memuaskan. Perkecambahan tumih manghasilkan persen tumbuh sangat rendah (kurang dari 1 %) sedangkan untuk geronggang belum berhasil tumbuh sama sekali. Hasil evaluasi penanaman tanaman WWF di Taman Nasional Sebangau menghasilkan persen tumbuh rendah yaitu 39 % dengan jarak tanam 5 m x 5 m sedangkan hasil penanaman proyek Gerhan oleh Dinas Kehutanan Propinsi Kalimantan Tengah di areal Taman Nasional Sebangau juga menghasilkan persen tumbuh cukup besar yaitu lebih dari 90 % dengan riap tumbuh untuk belangeran 1,86 cm/tahun, jelutung 1,08 cm/tahun. Karet 0,99 cm/tahun dan tumih 1,93 cm/tahun.The first year results showed that vegetative propagation of tumih and geronggang could be performed satisfactorily. Results of propagation using shoot cutting originated from tumih seedlings showed growth percentage 70-90 80%, while that for geronggang was rather low, namely 40-60%. For tumih species, growth of shoot and root was satisfactory enough. Treatment of growth hormone produced significant effect. Generative propagation using seeds produced less satisfactory results. Germination of tumih seeds produced very low growth percentage (less than 1%) while that of geronggang did not grow at all. Results of evaluation on WWF planting in Sebangau National Park showed low growth percentage, namely 39% with spacing of 5m x 5 m, while results of planting by project of Land Rehabilitation Movement conducted by Central Kalimantan Provincial Forestry Service Agency showed sufficiently high percentage of growth, namely more than 90%, with growth increment for belangeran 1.86 cm / year, jelutung 1.08 cm / year, rubber 0.99 cm / year and tumih 1.93 cm / year

Effect of Iron Toxicity on the Growth of Calliandra calothyrsus and Leucaena leucocephala Seedlings

Iron (Fe) is a micro essential needed by plants in small amounts and can be toxic when available in large quantities. This study aimed to evaluate how Fe exposure affects the growth of C. callothyrsus and L. leucocephala seedlings. This study used a completely randomized design with factorial, where the first factor consisted of two levels of seedlings (C. calothyrsus and L. leucocephala), and the second factor consisted of Fe concentration which consisted of 8 levels (0, 0.25, 0.5, 0.75, 1, 1.25, 1.5, and 1.75 mM). The results showed that treatment of seedlings species and concentration of Fe was able to significantly affect the growth parameters (height, root length, root dry weight, shoots, and plant dry weight) of seedlings. The control treatment (without Fe) showed the highest growth response compared to those treated with Fe exposure and an increase in Fe concentration was able to reduce all growth parameters in both seedlings. The 0.5 mM Fe concentration reduced all growth parameters of C. calothyrsus drastically, while in L. leucocephala, the Fe 0.75 concentration was able to decrease all growth parameters drastically. The tolerance index of both seedlings decreased with increasing Fe concentration. The rate of photosynthesis did not show a significant difference between treatments, meanwhile, it had a significant effect on chlorophyll affect chlorophyll (a, b, and total chlorophyll) and carotenoid content. The highest Fe content in C. calothyrsus seedlings was at a concentration of 1.5 mM (4.40%), while in L. leucocephala seedlings, the highest Fe content was at 1.7 mM (2.87%).

PENGGUNAAN BAHAN HUMAT DAN KOMPOS UNTUK MENINGKATKAN KUALITAS TANAH BEKAS TAMBANG NIKEL SEBAGAI MEDIA PERTUMBUHAN SENGON (Paraserianthes falcataria).

The purpose of this study was to analyze the effect of humic materials and compost on soil chemical properties and plant growth. The research was conducted in the Nickel Mine Land in PT Aneka Tambang (Persero) Tbk., Pomalaa, Southeast Sulawesi. Soil analysis was carried out in the Laboratory of Soil Research Institution, Bogor. Experiments were performed using randomized block design factorial 2 factors, with: Humic material level (0; 0.5; and 1.0 ml/plant) and compost level dosage (0.0; 1.0; and 2.5 kg/plant). The results showed that humic material and compost affect the improvement of the soil chemical properties. The combination of humic material and compost were able to increase N total, CEC, P, available base and saturation exchangeable. Humic material able to reduce Cr and Ni available in the soil. Whereas compost and combination of humic materials and compost able to reduce Ni available in the soil. Humic material and compost were also significantly affect the plant height, root lenght, diameter, nodule, and biomass. The best treatment was 1.0 ml and compost 2.5 kg to plant growth

The Diversity of Arbuscular Mycorrhizal Fungi in the Black Cumin Rhizosphere (Nigella sativa L.) in Cianjur, West Java, Indonesia

Arbuscular Mycorrhizal Fungi (AMF) is a type of fungus that can form a symbiotic mutualism with most plants. Some AMF can only be symbiotic with a certain plant species. This research aims to determine and obtain the genus AMF from black cumin (Nigella sativa L.) accessions from America, Turkey, Hong Kong, Slovenia, India, and Kuwait accessions which had been grown in West Java, Indonesia. Three samples from each accession, four replications each, were collected for examination. The results showed that six generas of AMF were found in the rhizosphere of black cumin: Glomus, Gigaspora, Acaulospora, Scutellospora, Dentiscutata, and Entrophospora. The genus Glomus was predominantly found in the Indian accession, i.e. 96.42 spores.Keywords: black cumin, diversity, fungi, exploration, AM

IDENTIFICATION OF TEAK MISTLETOE SPECIES AND BASIC INFORMATION OF UTILIZATION AS MEDICINAL PLANT

Mistletoe is hemiparasitic plants (macroparasite) on seasonal and annual plants include trees, however, mistletoes are also beneficial as key species that fill in the ecological niche, and a potential to non-wood forest product such as medicinal plants as one of them. The objectives of this research are to identify species of teak mistletoes at Padangan Clonal Seed Orchard (CSO) in Perum Perhutani and to aim its posibilities as medicinal plant. The inventory methods on species of teak mistletoes was carried out in compartements/blocks of teak clones that are designated as Observation Sample Plots (OSPs/PCP) of the attack intensity from low, medium, high, control; and four units Observation Measurement Plots (OMPs/PUP) on each OSPs/PCP. Continously, it was analized by comparing the same species of mistletoes on other host trees as reference which was efficacious to be used as medicinal plant. Three species of mistletoes parasitizing teak clone stands were identified as Dendrophthoe pentandra (L.) Miq. of family of Loranthaceae which is also attacking other host trees, Macrosolen tetragonus (Blume) Miq. of family of Loranthaceae too, Viscum articulatum Burm. F. of family of Santalacea/Viscaceae that is hyperparasite on two other mistletoes. The comparison with the same teak mistletoe but on different host trees shows that including D. pentandra and V. articulatum have the potential for hypertension treatment. D. pentandra is used too for medicine to cure ilness, wounds, fester and recovery from parturition. Known that chemical content this mistletoe comprise of flavonoid ingrident, fenolat acid (terulat acid, para hidroksi benzoate acid, kumarat acid, protokatekuat acid and vanilat acid. As for the utilization of M. tetragonus hasn’t been discovered up to this moment.Key words: mistletoe, identification, teak clone, non-wood forest product, medicinal plan

PENGARUH KEBERADAAN AKAR ADVENTIF DAN MEDIA TANAM TERHADAP PERTUMBUHAN STEK CABANG BAMBU BETUNG (Dendrocalamus asper Schult Backer ex Heyne) Influence of Adventitious Roots and Planting Media on Growth of Branch Cutting of Betung Bamboo

The need of bamboo raw materials, betung bamboo for instance, keeps increasing in line with the rising rate of population growth and science development. Therefore, stands of bamboo clumps with sustainable productivity and quality, are absolutely required. One of betung bamboo’s characteristics is presence of adventitious roots in branches of bamboo culm. The problem is that many of such branches often have dry adventitious roots which are brown in color. Based on such condition, research of the effect of presence of dry adventitious roots, need to be conducted, as well as the effect of growth media, on the growth of bamboo branch cuttings. The research objective is to examine the effect of bamboo branches with dry adventitious roots and planting media on growth of betung bamboo’s branch cuttings. The media used are soil, rice husk charcoal and compost. The experiment which used factorial RAK design showed that planting media significantly affected leaf numbers, whereas adventitious roots had significant effect on all measured parameters, including shoot length, shoot numbers, leaf numbers, oven dry weight of roots, and survival percentage. Media with the highest leaf numbers were mixture of soil and rice husk charcoal.Keywords: adventitious root, Dendrocalamus asper, planting media, branch cuttin