Abstract. Oktafitria D, Febriyantiningrum K, Jadid N, Nurfitria N, Rahmadani F, Amrullah A, Hidayati D. 2019. Assessment of reclamation success of former limestone quarries in Tuban, Indonesia, based on soil arthropod diversity and soil organic carbon content. Biodiversitas 20: 1743-1747. The reclamation for sustainable ecosystem in mined land, including revegetation, is an obligatory program stipulated by the Indonesian government. This study evaluated the ecological improvement of revegetated land at the reclamation sub-areas (RSAs) of former limestone quarries in Tuban, East Java, Indonesia. The RSAs were coded as RSA 2010, RSA 2014, and RSA 2016 which represented the initial year of revegetation as well as the reclamation soil-material, namely the rejected soil-products, topsoil, and spoils, respectively. Soil insects were collected from ten sampling plots at each RSA using pitfall traps. The data of arthropods were analyzed to describe the community structure by determining the Shannon Diversity Index (H’), Simpson’s index (D), Sorensen's similarity and Shannon evenness index (E). The soil organic carbon (SOC) content from the soil composites was analyzed according to the Walkley and Black method. The results showed that SOC value at RSA 2010 (1.851±0.38%) was higher than that at SRA 2014 (1.694±0.29%) and SRA 2016 (0.947±0.10%). There were 18 families found from eight orders of soil insects (Coleoptera, Diplura, Diptera, Entognatha, Hemiptera, Hymenoptera, Neuroptera, and Orthoptera) and one order from terrestrial crustacea i.e., Isopoda, family Tylidae. The ecological indices of RSA 2014 (H’=1.15; D=0.47; E=0.61) and RSA 2016 (H’=1,19; D=0.47; E=0.57) were higher than those of RSA 2010 (H’=0,61; D=0.71; E=0.43). The Pearson analysis indicated moderate negative correlation (r=0.55) between soil arthropod diversity index and SOC. The diversity of soil arthropods at reclaimed area indicated that the reclamation was successful. Based on the study, we recommend that reclamation is done using mine spoil or topsoil rather than rejected soil products.

Mining activities can cause environmental damage, and needs land rehabilitation efforts. One approach to land rehabilitation after mine is with repairing the ecosystem condition by improving the quality of the soil, with increase fertility and enriching soil nutrient content by providing a biofertilizer from microbe, such as mycorrhizal fungi.  This study aims to determine the potential use of vesicular arbuscular mycorrhizal fungus (MVA) as a biofertilizer by examining the effect of MVA on the growth of corn plant (Zea Mays). Applicated indigenus MVA was able to increase the absorption of phosphorus (P) nutrients in the soil by corn plant so it had an effect on increasing the height and diameter of the corn plant stalks. MVA has the potential as a basic material for making biofertilizer, so it can be used to improve soil quality and environment in ex-limestone mining areas.

Organic fertilizer as an alternative to reduce the scarcity of chemical fertilizers, otherwise it can improve soil fertility. PT. Semen Gresik - Semen Indonesia Persero (Tbk.) Has a lot of plants in the treatment period in ex-mining land that needs fertilizer to help plant growth. In addition, in post-mining land, there is a lot of organic waste in the form of dry leaves under the stands of reclamation trees. The organic waste has the potential to be processed and used as organic fertilizer. This study aims to determine the utilize leaf litter in the reclaimed mine land as organic fertilizer with EM 4 and Molasses bioactivators. This study used is a laboratory experimental method. The results showed the composition of solid material in the form of leaf litter, bran, cow dung and husk charcoal in a ratio of 2: 1: 1: 1 as well as looking material in the form of molasses and EM4 with a dose of 100ml per 100kg of solid material dissolved in enough water (fertilizer can be clenched and expanded slowly and not broken). Conclusion leaf litter in the former reclaimed land can be processed and used as organic fertilizer.

AbstrakTujuan program pengabdian masyarakat ini adalah untuk memberikan solusi atas permasalahan yang dialami oleh kedua mitra yang merupakan kelompok peternak sistem penggemukan kambing, yaitu Mitra 1 kelompok"Ngembes Rejeki", Desa Bandung Rejo, Kecamatan Plumpang dan Mitra 2 kelompok "Mekarsari", Desa Gesikharjo, Kecamatan Palang, Kabupaten Tuban, Provinsi Jawa Timur. Permasalahan yang dihadapi oleh mitra adalah manajemen pakan. Solusi yang iberikan bagi peternak kambing adalah dengan memberikan workshop terkait pembuatan dan penggunakan rekayasa pakan kaya nutrisi yang mampu menekan biaya pengeluaran untuk pakan konsentrat serta dapat menjadikan nutrisi pakan lebih efektif dan efisien sesuai TDN kambing, selain itu juga mampu mereduksi bau tidak sedap dari limbah ternak kambing (urin dan feses). Hasil yang didapatkan setelah tahap pelaksanaan workshop adalah mitra memberikan pakan tambahan kepada kambing berupa pakan kaya nutrisi yang berasal dari limbah industri dan pertanian. Setelah dilakukan evaluasi program, biaya pakan yang dikeluarkan mitra berkurang, dengan pertambahan berat badan kambing mitra yaitu rata rata 3,12 kg/bulan dan feses dan urin yang tidak berbau.Kata Kunci: rekayasa pakan;limbah industri dan pertanian; kambing; Total Digestible Nutrient (TDN) Village, Plumpang Sub-District and Mekarsari, located in Gesikharjo Village, Palang Sub-District, Tuban District, East Java Abstract The aim of this community engagement program is to provide solutions to the problems experienced by the two partners who are a group of goat breeders, named Ngembes Rejeki, located in Bandung Rejo

<p><em>The purpose of this study was to determine the diversity of soil insect orders in the reclamation area of former limestone quarries in the top soil type, spoil and reject product used in the media for land reclamation processes. This research sampling technique uses a pitfall trap tool. This study used descriptive quantitative data analysis using the Shannon-Wiener diversity index, Simpson dominance index, Pielou species evenness index, and index of Morisista-Horn habitat similarity. Based on the research that has been done it can be concluded that the reclamation land in 2010 with the dominant type of dust has a low diversity category and a high dominance category with the discovery of 4 orders. The reclaimed land in 2014 with the dominant clay type soil has a moderate diversity category and a low dominance category with 7 orders found. Whereas the reclamation land in 2016 with the dominant type of sand has a low diversity category and a high dominance category with the discovery of 8 orders. The spread of species in all three locations was categorized evenly and between locations did not have the same community. </em></p>

The groove planting system (GPS) is one of the modifications in the plant planting system on ex-limestone mining land. The method used in the implementation of the GPS is to create a basin in the form of an elongated groove on the ex-limestone mining land that has not been reclaimed. Tectona grandis can be grown on less fertile land. This is even recommended by the government, where forest areas were set for planting with teak limited to places that are less fertile and steep. The growth of a plant can be influenced by environmental factors and genetic factors. The interaction between these two factors will determine the growth of a plant. The purpose of this study was to analyze the effectiveness of the Groove planting system (GPS) on the growth of teak (Tectona grandis) in limestone ex-mining areas. The method in this research was an experimental method that was carried out in the former limestone quarry of PT Semen Indonesia in 2020. The results showed that the growth of teak seen from the parameters of plant height, bar chart, leaf number, and leaf color increased. For example, leaf color with a conventional system has a scale of 3 with a GPS scale of 5. Conclusion The GPS method is very effective for the growth of teak (Tectona grandis) because there is an increase in growth and color scale in terms of plant height, stem diameter, number of leaves, and leaf color parameters.

Respon masyarakat terhadap potensi produk olahan buah salak menjadi Kurma salak dan sirup salak sebagai produk unggulan di Kampung Salak menjadi permasalahan bagi POKDARWIS Taruna Mandaka sebagai Mitra pada pengabdian masyarakat ini. Sehingga tujuan pada pengabdian masyarakat ini adalah melakukan analisis terhadap respon masyarakat terkait produk hasil olahan buah salak oleh warga kampung salak sebagai produk oleh-oleh kampung wisata Kampung Salak. Pengabdian masyarakat ini dilakukan selama bulan Mei hingga Oktober 2020. Metode yang digunakan adalah konsultasi/ pendampingan/ mediasi kepada masyarakat kampung salak dusun Rahayu Lereng Kuning desa Rengel kabupaten Tuban. Hasil yang didapatkan adalah sebesar 53% responden menyatakan sangat setuju dengan adanya pengolahan buah salak menjadi kurma salak dan sirup salak, sebesar 66% responden menyatakan belum pernah mencoba olahan buah salak dalam bentuk kurma salak maupun sirup salak dan lebih dari 50% menyatakan menyukai rasa kurma salak yang berbanding lurus dengan persentase mereka menyukai buah salak. Sehingga dapat simpulkan bahwa kurma salak dan sirup salak memiliki potensi yang besar sebagai produk olahan buah salak dan dijadikan sebagai produk unggulan Kampung Salak desa Rengel. Berdasarkan kegiatan yang telah dilakukan diketahui 76% masyarakat belum mengetahui mengenai pengujian terhadap produk makanan dan minuman yang tepat, sehingga hal ini akan dijadikan rekomendasi untuk pelaksanaan pengabdian masyarakat berikutnya di desa Rengel sehingga dapat terjalin komunikasi dan diskusi antara pihak mitra dan pihak akademisi.

Abstract. Hidayati D, Nurtjahyani SD, Oktafitria D, Ashuri NM, Kurniallah W. 2019. Short Communication: Evaluation of water quality and survival rate of red tilapia (Oreochromis niloticus) by using rice-fish culture system in quarry land of clay. Biodiversitas 20: 589-594. Quarry land is an area that has been used as mining land and has different characteristics from the former conditions before being mined so that the level of productivity of the soil decreases. This study aims to determine the suitability of clay quarry land in Tuban as a cultivation medium based on the analysis of the water quality and survival rate of red tilapia (Oreochromis niloticus) using rice-fish culture system. This study used a completely randomized experimental design method with triplicate of three ratio of cultivation medium using Ex-mining Land Soil (EmLS) from quarry land and Top Soil, i.e., 1:0 (A), 1:1 (B), and 0:1 (C/Control). Results of water quality measurements that include nitrite, nitrate, temperature, pH, and dissolved oxygen in descriptive unreal influence showed good condition. However, ammonia gives a significantly different effect mainly on the survival rate in 30 days nurture. In the end, the ANOVA test result of tilapia survival in treatment A was not significantly different (P>0.05) with treatment B and control. Based on these data, it can be seen that the EmLS from the quarry land of clay and TS can be used as a medium for cultivation of red tilapia (O. niloticus) with the recommended ratio of 1:1.