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.
This study aims to determine the effect of KOH activator and contact time of activated carbon from coconut shell on Pb 2+ metal ions adsorption in water samples from the Surabaya mangrove Wonorejo region. The initial content of Pb 2+ metal ions in the water sample was 1,1890 ppm. Activated carbon was made from coconut shell. Activation was done using KOH with variations in concentrations of 1, 3, and 5 M. The contact time of Pb 2+ metal ions adsorption in water samples using activated carbon was varied for 1, 1.5, 2 and 2.5 hours for each variation of KOH activator concentration. The highest adsorption results were obtained from activated carbon that was activated by KOH 1 M with a contact time of 1.5 hours. The number of adsorbed Pb 2+ metal ions was 1.5645 ppm or 86% of the initial concentration.
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.
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
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.
This community service program aims to provide additional knowledge and understanding in optimally utilizing home yards to increase community productivity while implementing government policies to stay at home during the Covid-19 pandemic.. Like rural communities in general, the people of Pongpongan village have quite large yards, but this is still not being utilized optimally. To provide additional knowledge and understanding regarding the use of homestead land, the initial stage of this program is to conduct socialization, then follow it up with training in planting and caring for good spices and then proceed to the monitoring process. The method used was to carry out focus group discussions and planting practices. Monitoring activities were carried out for approximately 3 months to determine the progress and obstacles faced by program participants. The results obtained indicate that many people have not used their yards and are constrained by capital. In addition, of all the participants who have yards that can still be used, they are interested in joining the follow-up program. This is because 100% of participants are satisfied and 85% of participants do not experience difficulties in running the programs given.
This study aims to compare the characteristics of the handmade liquid hand soap formula and its effectiveness in reducing the number of germs. The formulation used is the difference in the amount of EDTA, Texapon, and NaCl used in soap making. The characterization carried out was organoleptic, physical stability at room temperature, pH, viscosity, foam height and stability, water holding capacity, and density. Meanwhile, reduced number of germs was carried out by calculating the total plate number (ALT) of bacteria on the test taker hand before and after washing their hands. The results obtained were that the first formula (P1) which used less amounts of EDTA, Texapon, and NaCl had a bright color, lack of foam, perfect solubility,stable at room temperature, and did not cause a burning feeling in the hands. Whereas the second formulation (P2) with a higher amount of EDTA, Texapon, and NaCl hadexellence in the amoont of foam compared to the previous formula but the solubility was not perfect, less stable at room temperature and caused a burning feeling in the hands. The result of Pairef t test show that the t count is bigger than t table, so the different formulation had an effect on reducing the germ on the test taker hand based on ALT germ number parameter. P1 formulation can reduce the number of bacteria on hands by 47.64% and P2 formulation by 36.12%.
This study aims to determine the manufacturing process and the quality of liquid organic fertilizer made from vegetable waste from Pasar Baru, Tuban Regency. Liquid organic fertilizer is done as a solution to the amount of vegetable waste which is the most waste produced by Pasar Baru in Tuban Regency with the amount reaching 2 tons / day. This large amount of vegetable waste will cause environmental problems if not handled and treated properly. The method used in making liquid organic fertilizer is semi anaerobic fermentation using drum composter with the addition of EM-4 bioactivator. The quality of liquid organic fertilizer will be seen based on the physical properties and the results of the analysis of macro nutrient content and adjusted to SNI determined by Permentan No. 70 Th. 2011. The results of the analysis showed that physical properties pH and temperature are fullfill the standard of SNI Permentan No.70 Th. 2011. But for the content of macro elements of C-organic, N, P, and K total are not fullfill the standard.
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