Shorea leprosula is categorized as fast growing dipterocarps. Although classified as a promising species for plantation, there is still a problem in the application of large scale seedling procurement since the seed is characterized as recalcitrant and produced irregularly. Vegetative propagation is one of the promising techniques to overcome this problem. The main concern in vegetative propagation is the cutting material maturity or juvenility stage. The research was conducted with the objectives of determaining relation between age of stock plants reflecting various juvenile stages and the success of rooted cuttings. The results revealed that cuttings collected from 2 years old S. leprosula stock plants produced higher percentage of rooted cutting than those of older trees (>10 years old). The cutting ability to root was affected by C/N ratio and IAA as shown from biplot analyses.

Peatlands are ecosystems with the particular characteristic that is high organic matter content. On the other hand, these features lead to the peat soil vulnerable to decreasing the quality of the land. This study aimed to analyze the physical and chemical properties of peat soil in the peat swamp forest in the Resort Pondok soar, Tanjung Puting National Park in Central Kalimantan. The method used in this research is systematic sampling with a set of five points as soil sampling with twice replications within the plot measuring 100 m × 100 m. Peat soil at the site of research has added to peat ranged from 20 -> 400 cm. Tests showed there are different levels of maturity of peat from fibric until saprik, and the peat is likely to have the same maturity level or more raw than the maturity level of peat with field tests. The results of color identification are very dusky red, dark reddish-brown, reddish-black, and black. Peat soil has a pH ranging from 3.7-5.2 with an average pH of 4.5 (acidic), does not contain pyrite, ash around 1:13% - 43.88%, and the content of organic C ranges from 32.55% - 57.35%.

Soil Macrofauna has a very important role in maintaining soil fertility through the decomposition of organic matter, nutrient distribution, increasing soil aeration and so on. The existence of soil macrofauna are very important in helping the process of rehabilitation of post-mining land because they contribute to the improvement of the physical, chemical, and biological properties of soil. The purposes of this study are to identify and quantify the diversity of soil macrofauna in various types of stands and land without stand in Holcim Educational Forest. The highest abundance of soil macrofauna was found in mixed stand with 240 individuals in nine plots of observation, each plot was 40 cm x 40 cm. Layers of soil (0-10 cm) has an abundance of soil macrofauna higher than in the litter layer, because soil layer can provide protection from direct sunlight and enough food for soil macrofauna. Mixed stand has the highest soil macrofauna diversity (H '= 2.52, DMG = 6.93, J' = 0.63), as it has a more diverse vegetation and highest canopy density. Environmental conditions such as soil temperature, canopy density, and soil organic matter can influence the composition and abundance of soil macrofauna, so that the soil macrofauna can be used as an indicator in monitoring environmental quality. Soil macrofauna that dominates in all the stands and land without stand, were red ants (Formicidae 7), termites (Rhinotermitidae 1), earthworms (Megascolecidae 1), and larvae of Coleoptera (Scarabaeidae 1).Key words: abundance, diversity, environment, soil macrofauna

Abstract. Budi SW, Wibowo C, Sukendro A, Bekti HS. 2020. Growth improvement of Falcataria moluccana inoculated with MycoSilvi grown in post-mining silica sand soil medium amended with soil ameliorants. Biodiversitas 21: 422-427. High aluminum content in soil of post-mining silica sand area inhibits plant growth. MycoSilvi is an inoculum of Arbuscular Mycorrhizal Fungi (FMA) enriched with Mycorrhizal Helper Bacteria (MHBs) which plays an important role for improving plant growth in unfertile soil medium. The aims of this research were to analyze the growth response of Falcataria moluccana (Miq.) Barneby & JW Grimes) seedlings treated with MycoSilvi and soil ameliorants (compost and lime) in post-mining silica sand soil medium. The randomized complete design with factorial scheme was used in this study. The results showed that the interactions of MycoSilvi and Soil ameliorant significantly increased height, diameter, biomass and mycorrhizal colonization of F. moluccana. Combination of MycoSilvi variant 3 and lime increased height, diameter, and biomass of F. moluccana by 965%, 147%, and 1427% respectively, as compared to those of control plants. The mycorrhizal roots colonization in those treatments was 98%. The addition of compost and lime increased pH and decreased Aluminum and Fe of the soil medium. F. moluccana seedlings have high mycorrhizal dependency on post-mining silica sand soil media. These results indicate prospective uses of MycoSilvi and soil ameliorants for improving plant growth in unfertile soil medium, including soil in post-mining area.

Abstract. Bekti HS, Budi SW, Wibowo C. 2022. Arbuscular mycorrhizal fungi inoculum and soil ameliorants enhance the growth of Falcataria moluccana in revegetation of post-silica sand mining land in Sukabumi, Indonesia. Biodiversitas 23: 1181-1187. Open-pit mining of silica sand caused several negative impacts on the environment, especially inhibited plant growth. MycoSilvi is Arbuscular Mycorrhizal Fungi (AMF) inoculum enriched with Mycorrhizal Helper Bacteria (MHBs) which could increase plant growth and nutrient uptake in degraded soils. A ?eld experiment was conducted to study the growth response of F. moluccana (Miq.) Barneby & JW Grimes seedlings treated with MycoSilvi inoculation and soil ameliorants (lime and compost) in post-silica sand mining land. The experimental design used in this study was a completely randomized block design with a factorial scheme. The results showed that MycoSilvi inoculation combined with soil ameliorant significantly improved plant growth of F. moluccana and assisted plant survival within nine months after transplantation in the field. MycoSilvi inoculation and soil ameliorants also increased the number of bacteria in the soil rhizosphere compared with control treatment. This study indicated that revegetation with MycoSilvi inoculation and soil ameliorants could influence plant establishment and development of microbial soil communities in infertile soils, suggesting that it could be an effective method for further ecological rehabilitation in degraded land areas.