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Linking Local Government and Demographics to Ecological Footprint Muhammad Abduh Abduh; Dedik Budianta; Arinafril Arinafril; Lili Erina
Sriwijaya Journal of Environment Vol 5, No 3 (2020): ENVIRONMENTAL MANAGEMENT
Publisher : Program Pascasarjana Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (323.143 KB)

Abstract

To simplify the description of the damage phenomenon to the earth, the concept of ecological footprint can be used. This concept is not specifically built to calculate the destruction of the earth. This concept calculates how much space (on land and water) humans need to produce the resources they need including absorbing the waste they produce. This study calculates the ecological footprint in Palembang and its surroundings according to demographic factors and local government.  To investigate the general pattern of ecological footprint and its determinants based on the respondents’ reports, a survey was launched in October 2017. As a result, the average ecological footprint in Palembang Metropolitan and its surroundings is 0.591 global hectares (gha).  The ecological footprint in Palembang Metropolitan and its surroundings is formed by 4 things, namely: diet and food choices, shelter/home life, transportation and lifestyle choices.  The largest portion is given by diet and food choices (26.8 percent), while the smallest contribution is contributed by transportation (24.1 percent).   Taking into account demographic factors, a high ecological footprint is owned by a group of male individuals, aged 30-39 years, highly educated, working, and after hearing and understanding climate change and ecological footprint. Finally, if observed according to the type of government, metropolitan cities have a high ecological footprint than others.  Finally, the ecological footprint of Palembang as a metropolitan city is higher than the others.
Adsorption of Lead Content in Leachate of Sukawinatan Landfill Using Solid Waste of Tofu Sri Hartati; Dedik Budianta; Hermansyah Hermansyah
Sriwijaya Journal of Environment Vol 1, No 2 (2016): Developing Without Destruction
Publisher : Program Pascasarjana Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (522.974 KB) | DOI: 10.22135/sje.2016.1.2.42-46

Abstract

Abstract: A study on the adsorption of lead content in the leachate from the landfill by using solid waste of tofu. This study assed the effects of weight of the solid waste of tofu and the contact time on the efficiency of the Pb adsorption. The sample used in this study was artificial sample of a solution of Pb metal ion and the sample of the leachate of the landfill waste.  The study was carried out with a batch system, with the variables of weight of waste of tofu of 0.5; 1.0; 1.5 g. While the variables of the contact time were 0, 30, 60, 90, 120 and 150 minutes. To determine the optimum conditions, the waste of tofu was dissolved in 50 mL of Pb metal ion solution with a concentration of 20.27 mg/L and stirred with a shaker for 30 minutes at a speed of 180 rpm. The same thing was done by varying the contact time. When the optimum condition was obtained, it was applied with varying concentrations of Pb metal ion solution and garbage landfill leachate. The initial and the final levels of the Pb metal ion solution were analyzed by using the Atomic Adsorption Spectroscopy (AAS). The initial and the final results of the heavy metals were analyzed for disclosing the adsorption efficiency. To reveal the effects of the weight of the waste of tofu and the contact time, the data were analyzed with graphs. The waste of tofu with a weight of 1.5 g and a contact time of 90 minutes, had an adsorption efficiency of 97.68% at a concentration of 20.27 mg / L for Pb ion solution and 28.57% for the leachate from the landfill waste in 100 mL of leachate.Keywords: solid waste of tofu, adsorbent, adsorption, lead, leachate Abstrak (Indonesian): Telah dilakukan penelitian tentang adsorpsi kadar timbal dalam lindi dari sampah TPA dengan menggunakan limbah padat tahu. Penelitian ini akan mengkaji pengaruh berat ampas tahu dan waktu kontak terhadap efisiensi adsorpsi Pb. Sampel yang digunakan dalam penelitian ini adalah sampel buatan dari larutan ion logam Pb dan sampel dari lindi sampah TPA. Penelitian dilakukan dengan sistem batch, dengan variabel berat ampas tahu 0,5; 1,0; 1,5 g. Sedangkan variabel waktu kontak adalah 0, 30, 60, 90, 120 dan 150 menit. Untuk menentukan kondisi optimum, variabel berat ampas tahu dilarutkan dalam 50 ml larutan ion logam Pb dengan konsentrasi 20,27 mg/L lalu di aduk dengan shaker selama 30 menit dengan kecepatan 180 rpm. Hal yang sama dilakukan dengan variasi waktu kontak, setelah diperoleh kondisi optimum diaplikasikan dengan variasi konsentrasi larutan ion Pb dan lindi sampah TPA. Kadar larutan ion logam Pb awal dan akhir dianalisis dengan menggunakan Spektrofotometer Serapan Atom. Hasil awal dan akhir logam berat dianalisis untuk diketahui efisiensi adsorpsinya. Untuk mengetahui pengaruh berat ampas tahu dan waktu kontak data dianalisis dengan grafik. Ampas tahu dengan berat 1,5 g dan waktu kontak 90 menit, efisiensi adsorpsinya sebesar 97,68% pada konsentrasi 20,27 mg/L untuk larutan ion Pb dan 28,57% untuk lindi dari sampah TPA dalam 100 mL lindi.Kata kunci : limbah padat tahu, adsorben, adsorpsi, timbal, lindi.
Macronutrients (NPK) balance in rice field and dryland maize cropping systems Sugeng Winarso; Rendy Anggriawan; IGM Subiksa; Rakhmaghfiroh Geonina Ganestri; Salsabila Regina Intansari; Dedik Budianta
Journal of Degraded and Mining Lands Management Vol 10, No 1 (2022)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2022.101.3945

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Fertilisers, especially those containing NPK nutrients, have become a necessity in farming both rice fields and dry land. Most of the application of fertilisers is based on plant commodities and less based on the nature of the diversity of the soil or growing media. This study aimed to determine the balance of NPK nutrients and the nutrient elements that became the limiting factor in the rice and dryland maize cropping systems. The study was conducted at a rice field in Jember District and on dry land in Bogor District with maize plants. The fertiliser used is organic fertiliser. Nutrient balance is obtained by calculating the difference between the total input of nutrients N, P, and K given and the total output of nutrients N, P, and K transported by plants. The results showed that the combination of fertilizing treatment with biochar (50%), fish waste (25%), and chicken manure (25%) up to 10 t/ha on rice field soil at the experimental location in Jember had to limit factors for plant growth: low organic matter content, trace elements essential nutrients N and P are also low. Likewise, the combination of inorganic NPK fertiliser treatment with organic fertiliser up to 600 kg/ha on dry land in Bogor has not been able to improve its fertility status with limiting factors: low organic matter content, low N-total, and low exchangeable K.
PEMBERIAN PUPUK ANORGANIK DAN VERMIKOMPOST UNTUK PERTUMBUHAN KEDELAI DI TANAH PASANG SURUT: Application of Anorganic Fertilizer and Vermicompost for Soybean Growth In Tidal Soil Muhammad Mustaanullah; Dedik Budianta; Adipati Napoleon
AgriPeat Vol. 23 No. 2 (2022): JURNAL AGRIPEAT
Publisher : Fakultas Pertanian Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/agp.v23i2.5956

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This study aims to determine the location-specific dosage of anorganic fertilization combined with vermicompost to increase the productivity of soybean in a tidal soil. This research was a pot experiment carried out in the Experimental Garden Agrotech Traning Center, Faculty of Agriculture, Sriwijaya University, Indralaya. This research was conducted in September 2019 to February 2020. The experimental method used was a factorial randomized block design with two factors, the first factor was the dosage of anorganic fertilizer which was dosage of fertilizer recommended by the South Sumatra Agricultural Research and Development Agency (D1) and , Site specific fertilizer dosage (D2), The second factor was vermicompost consisted of three levels, which were 5 tons ha-1 (V1), 7.5 tons ha-1 (V2) and 10 tons ha-1 (V3). Each treatment was made 3 replications. Hence, the total of treatments was 18 units. The variables observed were soil pH, N-total, P-available, K-dd and texture, and soil pH, N-total, and K-dd at primodial phase), the analysis of plants tissues were N and K, and plant growth consisted of plant height, number of seeds per plant, number of pod contents, weight of 100 seeds and production. The results showed that location-specific fertilizer was the approppriate dose for soybean growth in tidal soil with a production of 1.18 tons ha-1, vermicompost at 7.5 tons ha-1 was obtained the highest yield with value of 1.30 tons ha-1 and a combination of site-specific fertilizerand vermicompost at 7.5 tons ha-1 was found the soybean yield with value of 1.47 tons ha-1
Land Use Change Threat to Paddy Cultivation Sustainability on the Irrigated Rice Fields in Bengkulu Province, Indonesia Muhammad Faiz Barchia; Dedik Budianta; Bambang Sulistyo; Dodi Hardiansyah; Hery Suhartoyo; Ridha Rizki Novanda
Indonesian Journal of Geography Vol 54, No 3 (2022): Indonesian Journal of Geography
Publisher : Faculty of Geography, Universitas Gadjah Mada

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.22146/ijg.73304

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Unpredictable conditions of rice cultivation on fragile peatlands in Indonesia due to land-use changes would be an obstacle to agricultural food production and food security. This study aimed to determine the changes in land usage in Bengkulu, from prospective rice fields to oil palm plantations. The study was conducted from June to October 2020 at Air Manjuto irrigation paddy fields in Mukomuko Regency, Bengkulu Province. The analysis used satellite imagery with appropriate resolutions and multitemporal time from the United States Geological Survey's Landsat 5 Thematic Mapper (TM), Landsat 7 Enhanced Thematic Mapper + (ETM+), and Landsat 8 Operational Land Imager (OLI) collected from the years of 2000, 2008, and 2019. (USGS). The landscapes covering the Air Manjuto area were mostly marginal swampy peaty soils with ordo of Inceptisols, Histosols, and Entisols, which favor intensive rice cultivation. Oil palm plantation covers about 80% of the area, and in the last ten years, the cultivation by small-scale farmers increased sharply, about 8,219 ha or 68% from the previous decade, and no bush and bare land. In contrast, rice fields were an extraordinary loss of 6,819 ha or about 74% in the last decade, from 9,187 ha in 2008 to 2,308 ha in 2019. The loss of a huge area for rice cultivation at the Air Manjuto irrigation area threatens production in Bengkulu. The loss should be reversed through supporting infrastructure facilities and incentives, agrochemical subsidies, and agricultural insurances, and no more rice fields should be converted.
TEKNOLOGI PENGOLAHAN PUPUK KANDANG SEBAGAI PUPUK ORGANIK DAN BAHAN KOMPOS DI KELOMPOK PETERNAK HARAPAN MAJU I KOTA DARO ii OGAN ILIR SUMATERA SELATAN Dedik Budianta; A. Hermawan; A. Majid; Muhakka; M. L. Sari
Abdimas: Papua Journal of Community Service Vol. 5 No. 1 (2023): Januari
Publisher : LP3M Universitas Muhammadiyah Sorong

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.33506/pjcs.v5i1.1878

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Kegiatan ini dilaksanakan di kelompok Peternak Harapan Maju I di Ogan Ilir, Propinsi Sumatera Selatan. Keguatan ini bertujuan agar Kelompok Peternak tersebut dapat memanfaatkan kotoran sapi dan bahan organik untuk pembuatan pupuk kompos.  Bahan yang dibutuhkan adalah pupuk kandang sapi, jerami padi, dolomit, bekatul, abu, Effektif mikroorganimme 4, gula dan air. Bahan-bahan tersebut dilakukan pencampuran menjadi satu dengan kadar air 50 – 70 %. Kemudian jerami tersebut dibuat penumpukan sampai 2-3 lapis tergantung banyaknya yang digunakan. Proses fermentasi berlangsung 21 hari, pembalikan dilakukan setiap 1 minggu sampai 3 minggu agar semua bahan dapat menyatu dan fermentasi dapat berlangsung dengan cepat. Setelah 3 minggu kemudian dibongkar dan dianalisis di laboratorium. Setelah diayak dan dimassukan dalam kantong plastik, kompos tersebut dapat digunakan sebagai pupuk organik atau dijual. Hasil kegiatan menunjukan bahwa peserta  sangat berminat dan antusias serta tingkat partisipasi anggota Kelompok Peternak Harapan Maju I sangat tinggi, karena mendapat ilmu tentang pembuatan kompos. Hasil analisis laboratorium menunjukkan bahwa pH pupuk organik bersifat netral dengan nilai 6,88 dengan C-organik sangat tinggi dengan nilai 17,14%. Sementara itu kompos yang dihasilkan juga mengandung N,P dan K yang tinggi untuk dimanfaatkan tanaman.  
Non-Destructive Model for Estimating Leaf Area and Growth of Cnidoscolus aconitifolius Cultivated Using Different Stem Diameter of the Semi Hardwood Cuttings Fitra Gustiar; Benyamin Lakitan; Dedik Budianta; Zaidan P. Negara
AGRIVITA, Journal of Agricultural Science Vol 45, No 2 (2023)
Publisher : Faculty of Agriculture University of Brawijaya in collaboration with PERAGI

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.17503/agrivita.v45i2.3849

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Chaya (Cnidoscolus aconitifolius (Mill.) I.M. Johnst.) is a perennial leafy vegetable. Since the leaf blade is the most crucial component of the Chaya, it should be advantageous to estimate the leaf area non-destructively.  This research aimed to (a) develop a beneficial non-destructive model for leaf area estimation, and (b) ascertain the impact of stem cutting diameter when used as planting material on chaya growth rate. The results demonstrated that utilizing the length x width (LW) of the middle lobe as the predictor and the zero intercepts linear regression LA = 1.679 LW with R2=0.947 determination coefficient was the most dependable model for Chaya plant leaf area estimation. The stem diameter, which ranged from 9.9 to 17.3 mm, had affected the shoot length, number of leaves, and canopy area between 5 and 7 weeks after planting (WAP). The variations in growth metrics diminished along with the age of plants. The diameter of the stem cutting used as planting material had no effect on the fresh weight of young edible shoot tip at 11 WAP. On Chaya plants that were cultivated with larger stem cutting diameters, the fresh leaf weight at the branch tips was heavier.
PENENTUAN REKOMENDASI DOSIS PUPUK N P K TUNGGAL SPESIFIK LOKASI PADA TANAMAN PADI SAWAH TADAH HUJAN: (Determination Of Location-Specific Single N P K Fertilizer Dosage Recommendations In rainfed lowland rice) Latifa, Nafiya; Budianta, Dedik; Ayu, Ieke Wula
AgriPeat Vol. 24 No. 1 (2023): JURNAL AGRIPEAT
Publisher : Fakultas Pertanian Universitas Palangka Raya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36873/agp.v24i1.8333

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Tanaman padi (Oryza sativa L.) merupakan komoditas yang cukup esensial di dunia. Di Indonesia, tanaman padi merupakan tanaman pangan primer dengan angka minat yang tinggi. Terdapat beberapa faktor yang menyebabkan penurunan nilai produktivitas tanaman padi salah satunya adalah rendahnya kadar hara N, P, K tanah. Cara yang dapat dilakukan untuk meningkatkan hara N, P, K adalah dengan pemberian pupuk. Penelitian ini bertujuan untuk mengetahui ketersediaan hara dan beberapa sifat kimia tanah serta menghitung kebutuhan pupuk pada spesifik lokasi di lahan sawah Desa Talang Padang Kecamatan Talang Padang Kabupaten Empat Lawang. Metode yang digunakan pada penelitian ini adalah survey tingkal detail dengan bantuan peta skala 1:25.000. Sampel tanah yang diambil sebanyak 5 sampel tanah yang kemudian dianalisis sifat kimia tanahnya di laboratorium. Parameter yang diamati pada penelitian ini adalah N-Total, P tersedia, K-dd, pH, C-organik dan KTK tanah. Hasil analisis N Total tergolong rendah hingga sedang, P Tersedia tergolong sangat rendah hingga sedang, K-dd tergolong sedang, pH tanah tergolong sangat masam hingga masam, C-Organik tergolong sangat rendah hingga rendah dan KTK tanah tergolong sedang. Dari hasil analisis ketersediaan hara maka didapatkan rekomendasi dosis pemupukan N P K pada spesifik lokasi penelitian untuk tanaman padi adalah dosis pupuk Urea berkisar antara 93,19 kg ha-1 – 144,42 kg ha-1, dosis pupuk SP-36 sebanyak 8,22 kg ha-1 pada lokasi sampel D dan dosis pupuk KCl berkisar antara 90,37 kg ha-1 – 110,46 kg ha-1.
The impact of government purchase price policy of rice for producers and consumers in Indonesia Saleh, Tri Wahyudi; Lakitan, Benyamin; Budianta, Dedik; Yamin, Muhammad; Cahya, Gemala; Huanza, Muhammad
Jurnal Lahan Suboptimal : Journal of Suboptimal Lands Vol. 13 No. 1 (2024): JLSO
Publisher : Research Center for Suboptimal Lands (PUR-PLSO), Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36706/jlso.13.1.1024.654

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One of the rice policies was the government purchase price policy which was the price in grain or rice purchases by the Government at producer level to be stable become government rice reserves. The point of this research was to define the impact of the government purchase price policy of rice for producers and consumers. This research was conducted using qualitative analysis with descriptives based on tabulations of secondary data. Results of the research showed that government purchase price was part of the government's efforts to protect the basic price of grain and rice at the farm level thus creating affordable input prices and providing economic added value to farmers. The study found that an improvement in government purchase price  by 18-20% could increase the price of grain and rice from March to August 2023. The total percentage change in prices from March to August 2023 for dry harvested grain was 10.3%, dry milled grain was 10.8%, premium rice was 0.6%, medium rice was 3.2% respectively. Meanwhile, the impact on consumers of this policy was the occurrence of inflation of 0.41% which caused rice prices to increase. The government should evaluate the Government Purchasing Price (GPP) gradually every year.
Pertumbuhan dan Hasil Tanaman Sawi Hijau (Brassica juncea L.) Tumpang Sari Tanaman Chaya (Cnidocolus aconitifolius) dengan Ukuran Tajuk Berbeda Prayoga, Apri; Gustiar, Fitra; Marlina, Marlina; Budianta, Dedik; Ammar, M.; Susilawati, Susilawati
Seminar Nasional Lahan Suboptimal Vol 11, No 1 (2023): Prosiding Seminar Nasional Lahan Suboptimal ke-11 “Optimalisasi Pengelolaan Lah
Publisher : Pusat Unggulan Riset Pengembangan Lahan Suboptimal (PUR-PLSO) Universitas Sriwijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

Prayoga, A., Gustiar, F.,  Marlina, M., Budianta, D., Ammar, M., Susilawati, S. (2023). Growth and yield of mustard (Brassica juncea L.) intercropping chaya plants (Cnidocolus aconitifolius) with different canopy sizes. In: Herlinda S et al. (Eds.), Prosiding Seminar Nasional Lahan Suboptimal ke-11 Tahun 2023, Palembang 21 Oktober 2023. (pp. 306-317).  Palembang: Penerbit & Percetakan Universitas Sriwijaya (UNSRI).Intercropping is planting pattern that cultivates more than one type of plant in a certain unit of time aimed at increasing productivity. This study was conducted to examine the size of the chaya plant crown and the density of mustard plants using an intercropping system in the area of chaya plants (Cnidoscolus aconitifolius) in order to obtain optimal production and growth results. This study was conducted using a split plot design with two factors. The first factor as the main plot of the cultivation system is 3 treatments, namely conventional / monoculture (K0), intercropping on chaya plants with a header diameter of 80 cm (K1), and intercropping on chaya plants with a crown diameter of 120 cm (K2). The second factor is the density or planting distance as a child plot with a planting distance of 15 x 15 cm (P1), and a planting distance of 15 x 20 cm (P2). The data that has been obtained is then analyzed by the Analysis of Variance (ANOVA) method using the R-Studio application. The results showed that the cultivation of mustard greens (B. juncea L.) tosakan variety with intercropping patterns on conventional obtained the best results. But the 80 cm chaya plant canopy is not significantly different from conventional planting patterns so it can be said that the 80 cm chaya canopy is better than the 120 cm chaya plant canopy. The optimal planting distance is a planting distance of 15 x 15 cm because it is not significantly different from a planting distance of 15 x 20 cm in terms of the quality of the results obtained. In terms of quantity, a planting distance of 15 x 15 cm will produce more production results than a planting distance of 15 x 20 cm. So it can be concluded that the cultivation of mustard greens (B. juncea L.) varieties of intercropping chaya plants (Cnidoscolus aconitifolius) can be done on the chaya crown 80 cm and with a planting distance of 15x15 cm.
Co-Authors , Munandar A. Hermawan A. Majid A. Y.A Wiralaga A.A. Ketut Agung Cahyawan W A.M. Rohim Abduh, Muhammad Abduh Abdul Madjid Adipati Napoleon Adipati Napoleon Adipati Napoleon Agus Hermawan Agus Hermawan Agus Hermawan Aisyah Aisyah Aisyah Aisyah Aisyah Akbar Paripurna Aksani, Dila Alfredo Lee Panggar Bessy, Jerry Ali Yasmin Adam Wiralaga Ali Yasmin Adam Wiralaga Ammar, M. Andi Arif Setiawan Andi Arif Setiawan, Andi Arif Andika, Gusti Aditya Anggita, Tristantia ARINAFRIL ARINAFRIL Ashari Ashari Ayu, Ieke Wula Bakri Bakri Bambang Sulistyo Benyamin Lakitan Bolan, Nanthi Budy Wiryawan Dede Haryanti Dedi Setiabudidaya Dewi Lastuti Dewi Lastuti, Dewi Dila Aksani Dodi Hardiansyah Dodo Gunawan Dwi Putro Priadi Dwi Setyawan Eduan Rismansyah Eduan Rismansyah Erizal Sodikin Ermatita - Fisop Nurhuri Fitra Gustiar, Fitra Fitri Siti Nurul Aidil Gemala Cahya Gusti Aditya Andika Hardaningsih, Wiwik Hary Widjajanti Herliyanto Herliyanto Hermansyah Hermansyah Hermansyah Hermansyah Hermansyah Hery Suhartoyo Hery Widijanto Ida Nursanti Ieke Wulan Ayu IGM Subiksa Iin Siti Aminah, Iin Siti Ismed Inonu Jeannie Valinda Auditha Jerry Alfredo Lee Panggar Bessy Joko Santoso Khairunnisa, Poppy Latifa, Nafiya Lestari, Primastya Ayu Lestari, Wahana Lili Erina M. Huanza M. L. Sari M. Umar Harun Mardia Mardia Mardia Mardia Mardiansa, Edwin Maria Fitriana Marlina Marlina Marlina Messalina L Salampessy Moh. Rasyid Ridho Momon Sodik Imanuddin Muhakka Muhammad Abduh Muhammad Abduh Muhammad Abduh Abduh Muhammad Faiz Barchia Muhammad Mustaanullah Muhammad Said Muhammad Yamin Munandar Munandar Munandar Munandar NUNI GOFAR Nuraini, Putri Oktaria, Oktaria Duwi Pratiwi Oktaviani Oktaviani Prayoga, Apri Primastya Ayu Lestari Purnama Ria, Rofiqoh Putri Nuraini Rahmawati Ridwan Rakhmaghfiroh Geonina Ganestri Rendy Anggriawan Ria, Rofiqoh Purnama Rian Syafni Ridha Rizki Novanda Rindit Pambayun Rindit Pambayun S.N. Lumbanraja Sabaruddin Sabaruddin SABARUDDIN, . Sabarudin Kadir Sabarudin Kadir, Sabarudin Saleh, Tri Wahyudi Salni Salni Salsabila Regina Intansari Satria Jaya Priatna, Satria Jaya Seprila, Marlin Siti Masreah Bernas Siti Nurul Aidil , Fitri Sri Hartati Sri Hartati Sri Yuliartini Suarji, Muhammad Agung Sugeng Winarso Suheyanto Suheryanto Sumantri, Muhammad Haffidz Suntoro Suntoro Supriyadi Supriyadi Susilawati, Susilawati Syazili, As'ad Wahana Lestari Wandayantolis Warsito Warsito Warsito Wijaya, Rahmi Yakup Yakup Parto Yuanita Windusari Yudha Pratomo Zaidan P. Negara