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

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

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%).

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

Daya Serap Air dan Kualitas Wadah Semai Ramah Lingkungan Berbahan Limbah Kertas Koran dan Bahan Organik

Abstrak. Wadah semai ramah lingkungan merupakan produk yang dibuat dari bahan organik. Bahan organik yang digunakan dapat berupa limbah, sehingga dapat membantu mengatasi permasalahan lingkungan dalam menangani limbah. Di sisi lain penggunaan wadah semai ramah lingkungan mempunyai keuntungan yang lebih besar dibandingkan dengan polybag berbahan plastik. Penelitian ini bertujuan untuk mengetahui daya serap air dan kualitas Wadah Semai Ramah Lingkungan (WSRL) berbahan limbah kertas koran dan bahan organik lainnya. Rancangan yang digunakan dalam penelitian ini adalah Rancangan Acak Lengkap (RAL) dengan 2 faktor. Hasil penelitian menunjukkan bahwa daya serap air berkisar 171. 04 %-223.69%, dengan nilai tertinggi terdapat pada perlakuan Ab (Koran 100% + 8% perekat) dan terendah terdapat pada perlakuan Ac (Koran 100% + 12% perekat). Penggunaan koran 100% menunjukkan WSRL yang lebih kuat dibandingkan dengan perlakuan lainnya. Water Absorption and Quality of Eco-Friendly Container Waste from Newsprint and Organic Materials Abstract. Organic seedling containers was produced from organic materials. Organic materials used can be waste, so it can help overcome environmental problems in handling waste. On the other hand, the use of organic seeding containers makes the containers more friendly and has greater advantages compared to polybags made from plastic. This study aimed to determine the water absorption and durability of Environmentally Friendly Semi-containers (EFSC) in greenhouses and fields. The design used in this research was complete randomized design with 2 factors. The results showed that water absorption was 171.04% -223.69%, with the highest value found in Ab (100% pulp + 8% glue) treatment and the lowest was in Ac treatment (100% pulp + 12% glue). Using 100% newspapers showed a stronger WSRL compared to other treatments

EFEKTIFITAS FUNGI MIKORIZA ARBUSKULA (FMA) SERTA PUPUK NITROGEN DAN FOSFAT TERHADAP PERTUMBUHAN SEMAI JABON (Anthocephallus cadamba Roxb.) Effectiveness of Arbuscula Mycorrhizal Fungi (AMF) Nitrogen and Phosphate Fertilizer toward Jabon ........

Jabon (Anthocephallus cadamba Roxb.) is one of fast-growing species with high economical value, and well adapted on some of soil types. The aims of this research were to analyze the effectiveness of AMF species isolated from Samama (Anthocephallus macrophyllus (Roxb.) Havil) and to determine the favorable dose of nitrogen and phosphate fertilizer for Jabon growth. The research was conducted CRD-split plot design main plot was Acaulospora sp.1 (M1), Glomus sp.1 (M2), Acaulospora sp.2 (M3), Acaulospora sp.3 (M4), Glomus sp.2 (M5). While the fertilizer as the sub-plot, consist of control (P0), urea 0.5g+rockphosphat 2g (P1), urea 1g+rockphosphat 4g (P2). The result showed that AMF and fertilizer applications effectively improved Jabon grown, especially in height, stem diameter, and shoot dry weight. The interaction (M4P1) increased plant height 154.73%, diameter 75.38% and shoot dry weight 376.09% compared with control. P1 treatment was better for growth of Jabon that was inoculated by mycorrhiza. Acaulospora sp.1 (M1) originally from Samama without fertilizer had the best effectiveness for Jabon growth.Key words: Acaulospora, indigenou

Species Diversity of Undergrowth Vegetation in Former Silica and Limestone Mining Land at PT Holcim Indonesia Tbk, West Java Indonesia

Open pit mining causes damage on ground cover vegetation, increase of erosion rate, decrease of land productivity, and decrease of soil fertility