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Suwardji
Program Studi Ilmu Tanah, Fakultas Pertanian Universitas Mataram, Indonesia
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Journal : International Journal Of Science, Technology

 1 
Characteristics Of Physical And Chemical Properties Of Soil After Gold Processing (Case Study Of Unlicensed Gold Mining In The District Sumbawa Regency, Indonesia) Hamkary Salam, Riza; Suwardji, Suwardji; Fauzi, Taufik; Kusnarta, IGM
International Journal of Science, Technology & Management Vol. 5 No. 3 (2024): May 2024
Publisher : Publisher Cv. Inara Colaboration with www.stie-sampit.ac.id

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46729/ijstm.v5i3.1095

Abstract

The purpose of this study was to analyze the physical and chemical characteristics of the soil used for unlicensed gold processing in West Sumbawa Regency. This research was carried out in Kuang Village, Taliwang District, West Sumbawa Regency in September 2023. The criteria for soil sampling location is that the activity of the spindle has been inactive for 5 years, using mercury as a material for gold extraction and is in the home environment. This study was conducted by quantitative descriptive method or direct observation in the field and soil analysis in the Laboratory of soil chemistry and Biology, Faculty of Agriculture, University of Mataram. Furthermore, soil sampling was carried out using purposive sampling method or based on purpose with consideration of potential pollution. Based on the results, it can be seen that the physical characteristics of soil including clay with volume weight, specific gravity and porosity are quite dense soil with poor infiltration, while the chemical characteristics of soil include low fertility of both C-organic, CEC, soil pH, N and P soil. The concentration of Hg found in soil ranges from 1.42-15.83 ppm. In this case, mercury contaminated soil needs to be remediated using environmentally friendly materials, cheap and the availability of many in nature. Efforts that can be done is the use of green technology using phytoremediator plants and soil improvement materials, namely biochar. Therefore, it is necessary to conduct further research aimed at reducing the availability and mobility of mercury in the soil
Mercury Adsorption Test on Several Large Groups of Soils in West Sumbawa Regency, Indonesia Hapsari Hurum, Puji; Kusnarta, IGM; Sarjan, M.; Suwardji, Suwardji
International Journal of Science, Technology & Management Vol. 5 No. 4 (2024): July 2024
Publisher : Publisher Cv. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46729/ijstm.v5i4.1130

Abstract

Mercury is one of the heavy metals that has the highest toxicity in the global environment. Mercury can cause environmental damage and if it enters the food chain it can have negative impacts on human health. In overcoming the problem of mercury entering the food chain, it is very important to study the mobility and distribution of mercury in the soil. The presence of mercury (Hg2+) in soil is largely controlled by adsorption reactions with certain specific adsorption patterns. Therefore, it is very important to study mercury adsorption on several different types of soil in order to get an idea of ??how adsorption occurs in West Sumbawa Regency. The aim of this research is to determine the pattern and capacity of mercury adsorption on various large groups of soil in West Sumbawa Regency and the relationship between soil properties and mercury adsorption. The results of the research show that the adsorption isotherm pattern in the great soil groups Endoaquepts, Ustipsamments, and Udorthents more closely follows the Langmuir adsorption model, while the great soil groups Haplustepts, Hapludolls, Eutrudepts and Ustifluvents follow the Freundlich adsorption model. The major soil group that has the highest maximum mercury adsorption capacity in West Sumbawa Regency is Endoaquepts at 4,604 mg/g.
The Effect Addition of Soil Amandments and PGPR (Plant Growth Promoting Rhizobacteria) on the Growth and Yield of Cotton Plants Intercropped with Corn Plants in Dry Land of North Lombok Regency of Indonesia Siti Rohmaniati, Baiq; Sarjan, M.; Suwardji, Suwardji
International Journal of Science, Technology & Management Vol. 5 No. 5 (2024): September 2024
Publisher : Publisher Cv. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46729/ijstm.v5i5.1162

Abstract

This research investigates the effect of soil amendments in the form of cow, form goat manures and PGPR biofertilizer on cotton plants intercropped with corn in the dry lands of North Lombok Regency. The research aims is to determine the growth and yield response of cotton plants due to the application of soil amendments and PGPR in an intercropped system with corn in dryland areas. The research was conducted from December 2023 to June 2024 in Andalan Village, Bayan District, North Lombok Regency. The method used is an experimental method with field trials. The design used was Randomized Block Design (RBD), incorporating two factors: soil amendment treatment (P) as the main plot and PGPR (K) concentration treatments as the subplot. Soil amendments consisted of three levels: P0 (no cow manure and no goat manure), P1 (20 tons/ha cow manure), P2 (20 tons/ha goat manure). PGPR concentration consisted of four levels: K0 (without PGPR), K1 (20 ml/liter PGPR application), K2 (30 ml/liter PGPR application), and K3 (40 ml/liter PGPR application). The research results indicated that the application of 20 tons/ha of goat manure (P2) produced the highest average across all observed parameters (plant height, number of leaves, branch number, stem diameter, and plant yield). Similarly, the application of 40 ml/liter PGPR produced the highest average for these observed parameters. Based on the results of the land equivalent ratio (LER) analysis, this integration system shows highly suitable and relevant to be applied in the dry lands of North Lombok.
Co-Authors A. A. Ketut Sudharmawan A. A. Ketut Sudharmawan A. Farid Hemon 2) A.A Sudharmawan A.A. Ketut Sudharmawan AA Sudharmawan, AA AB, Baharuddin Abda Abda Abdul Syukur Abdus Syakur Assopi Agil Al Idrus Agus Suroso Ahmad Raksun Ahmad Suriadi Al Majid, Aqshaldi Azayaka Alkhairi, Muhammad Alvin Janitera Amri, Amarrusli Ali Amuddin -, Amuddin Amuddin Amuddin, Amuddin Anbary, Yasmin Afra Anggereni, Tara Gita Anggreny Dewatary, Dhea Anisah Resty U Annisa Suryanti Apriadi, Apriadi Aprianti, Irma Ardianti, Risma Arum Dewi, Pervitara Aryabakti, Lalu Arifin AULIA, FIRDA Auliya Safitri Aziz, Muhamad Darul Amimi Azizah, Isnaniar Rahmatul Baharuddin Baharuddin Baharuddin Baharuddin Bakti, Lalu Arifin Aria Bambang Dipo Kusumo Bambang Hari Kusumo Bangkit Maulana, Bangkit Caesario Susmadi M Diah Miftahul Aini Dita Apliza Dori Kusuma Jaya Edwin, Pratama Eko Basuki, Eko Endah - Herlina Eviani, Sri Fadli Fadli fahrudin Fahrudin Fahrudin Fahrudin Fahrudin Fajriani, Nurdani Fauzi, M Taufik Fauzi, Taufik Febriana Sri Wahyuni Feby Umaroh I Fibriyani, Eka Firda Salzabilla Syehan Firda Widya Sari Firman Abadi Saputra Hadromy Hawari Hamkary Salam, Riza Hanipah Hapsari Hurum, Puji Huda, Ahlul Fikri Amrul Husni Idris Husni, Ika Rauhul I Dewa Gede Jaya Negara I Gusti Made Kusnarta I Gusti Putu Muliarta Aryana I Made Sudantha I Wayan Sudika Ibrahim Ilmi , Lalu Bahrul Ilwati, Uun Irmayani Irmayani Irniatun Hasanah Irwin Aryadi Irwin Aryadi Ismail Yasin Isnaniar Rahmatul Azizah Iswara , Baiq Sagia Febrina Izomil Fathoni Jayus Kharisma Hendra Joko Priyono Joko Sumarsono Kusman, Hardi Kusnarta, IGM. Lalu Arifin Aria Bakti Lalu Kurniawan Larassaty Octaprama Lestari Ujianto, Lestari Lolita Endang Susilowati Lukmanul Hakim Luxanti, Sifa Rajasmin M Thoriq Panji A M Zul Qurnain M. Fahed Ramadhan M. Sarjan, M. M. Taufik Fauzi M. Taufik Fauzi M. Taufik Fauzi, M. Taufik Mahardhika, Baiq Eliza Prizma Mansur Ma’shum Mariani Mariani Mariani Mariatul Quro Maulidyasari Maya Rizki A Mimi Atiatun R Muh Hayatullah Muhammad Dinul Islami Muhammad Dinul Islami Muhammad Khiorul A Muhammad Sarjan Muhammad Syaihul Ahzami Mulyati Mulyati Mulyati Mulyati Mulyati Mulyati Mulyati mulyati mulyati Nadira Nani Herawati Nggolo, Baghdad Cahyo Nisa, Khaerun Nopiana Fitri Nurfaizah Nurlina Nurrachman Nurul Putri P Padusung Padusung Padusung Parta Tanaya Pramadya Sudantha Pramesthi, Ardi Yoga Puji Hapsari Hurum Putri Yunita Wahyuti Putri, Fadila Rahmatika Putri, Mega Utami Regina Rachmat Agumdhana Raodatul Putri Rengga Astrada Ria Rustiana Rida Olina C Ridha Ayumnuazmi Riezka Zuhriatika Rasyda Riezka Zuhriatika Rasyda Rinda Astri Vianti Rindu Salsabila Ulayya Rindu Salsabila Ulayya Rismawati Sudarsih Rudy Fermana Rusdiani, Rusdiani Sabaniartha, Ni Nengah Anatasya Sabariyah Sadmaka 1) Safira Mawaddah Safitri, Rifani Aulia Safta, Laila Salta, Legina Aldaeska Sandhiyana, Alifkha Bagus Saputra, Andika Nellsen Sartika, Luwy Satya, M. Erik Panji Dwi Selvia, Siska Ita Siska Ita Selvia Siti Raihanun Siti Rohmaniati, Baiq Sofia Dianti Y Sopia Hidayati Sri Tejowulan Sudarmawan, AA Ketut Sudharmawan, A. A. Ketut Sudharmawan, A.A. Ketut Sukartno Sukartono Sukartono Sukartono Sukartono Sukartono Sukartono Sulfaida Pratami Suparman Suwardji , Suwardji Syafitri, Nur Tamimi, M. Harjiman Taslim Sjah Taufik Fauzi Tejo Wulan Tejo Wulan Tribhuana Tungga Dewi U’ul Efriyanti Prayoba Verina Januati Wargadalam W.H. Utomo Wardani, Agustina Ayu Wayan Wangiyana Welmy Soumena Yudi Apriyan Yunita, Mira Yusrisal Nahendra Yusrisal Nahendra Zaenal Arifin Zahratul Aeni Zakaria, Abdul Wahid Zubaidi, Akhmad Zuhdiyah Matienatul Iemaaniah