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All Journal JTSL (Jurnal Tanah dan Sumberdaya Lahan) Dinamisia: Jurnal Pengabdian Kepada Masyarakat
Mochtar Lutfi Rayes
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Agriculture, Biological Sciences & Forestry Environmental Science Social Sciences Other

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PEMETAAN PREDIKSI SEBARAN KERENTANAN LONGSOR DI KECAMATAN TAWANGMANGU, KABUPATEN KARANGANYAR MENGGUNAKAN PENDEKATAN FUZZY LOGIC Mualif Adi Saputra; Mochtar Lutfi Rayes; Istika Nita
Jurnal Tanah dan Sumberdaya Lahan Vol. 6 No. 2 (2019)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (281.282 KB) | DOI: 10.21776/ub.jtsl.2019.006.2.16

Abstract

Tawangmangu District is one of the problemas areas in Karanganyar Regency related to landslides. Land use that is not in accordance with the slope and triggered by high rainfall makes the District of Tawangmangu an area with criteria of landslides of medium to high criteria. Mitigation efforts need to be carried out to minimize the danger of landslides. Data limitations are the basis for these mitigation efforts. This can be solved using fuzzy logic. This method can be used by looking at a limited area and data. This research was conducted in Tawangmangu District by dividing the research location into 16 land map units (LMU). The results showed that Tawangmangu District was divided into four classes, involve: not vulnerable, low, medium and high. Criteria are not vulnerable to spread in 9; 7; 11; 10 and 12 LMU, low spread in 3; 4; 5; 16; 8 and 13 LMU, medium spread in 2; 15 and 1 LMU and high vulnerability only in 14 LMU. Factors that can take effect the occurrence of landslides in Tawangmangu District are slope, land use and bulk rainfall. This method can be applied at research sites because it has the accuracy of very accurate results.
EVALUASI KESESUAIAN LAHAN UNTUK TANAMAN TEBU PADA LAHAN KARST FORMASI WONOSARI (TMWL) KECAMATAN GEDANGAN KABUPATEN MALANG Pramudito Kartiko Dumipto; Mochtar Lutfi Rayes; Christanti Agustina
Jurnal Tanah dan Sumberdaya Lahan Vol. 6 No. 2 (2019)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (574.649 KB) | DOI: 10.21776/ub.jtsl.2019.006.2.17

Abstract

Karst landform has different soil properties than the others land which are high clay content, low water holding capacity, relatively low nutrient availability, and in some areas it has a shallow soil that can impact the suitability of sugarcane productivity. It is necessary to analyze the suitability classes of sugarcane on karst landform based on productivity and make the criteria of sugarcane on karst landform.  Research was conducted in Gedangan District, Malang Regency, East Java Province, Indonesia with survey method (13 land map unit) with 38 minipits and 8 soil profil as typical pedon. The modification using boundary line method by multiple regression with stepwise method which has a value of R² ³ 0,5 and percentage production class. Land suitability at study area before modification has class S3 (Marginally Suitable) and N (Not Suitable). Boundary line method results land characteristics that significantly correlate with production (organic carbon, total N, available P, exchangeable K, soil depth and slope). The boundary line method results class S2 (Moderately Suitable), S3 and N with accuration 75%. The modification with percentage production class was done (organic carbon, total N, exchangeable K, and slope) and results class S1(Highly Suitable), S2, S3, and N with accuration 91%.
Together with Farmers, Exploring Adaptive and Economically Valued VegetationPost-Eruption of Mount Semeru: Bersama Petani Menggali Vegetasi Adaptif dan Bernilai Ekonomi Pasca ErupsiGunungSemeru Kurniawan Sigit Wicaksono; Ustiatik, Reni; Sri Rahayu Utami; Zaenal Kusuma; Mochtar Lutfi Rayes; Istika Nita
Dinamisia : Jurnal Pengabdian Kepada Masyarakat Vol. 7 No. 6 (2023): Dinamisia: Jurnal Pengabdian Kepada Masyarakat
Publisher : Universitas Lancang Kuning

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31849/dinamisia.v7i6.14655

Abstract

Mount Semeru eruption in 2020 and 2021 damaged 851 ha of productive land. Restoration of the affected lands requires information such as wide area, distribution, and eruption material characteristics. This community service aimed to provide a database as an overview of pyroclastic materials characteristics and elucidate potential-and-adaptive plants and microbes on post-Mt. Semeru eruptions. The volcanic ash contains significant elements (Al, Si, K, Ca, Ti, and Fe) and minor elements (V, Cr, Mn, Cu, Zn, Sr, Ba, Eu, and Re). Some of the plants that have survived post-eruption are annual shrubs and herbaceous plants such as grasses, so these plants can be used to restore the affected lands fertility after the Mt Semeru eruption. Based on economic evaluation and conditions in the field, the recommended adaptive plants are Pennisetum puparium and Musa paradisiaca. Both plants provide economic benefits for animal feed and farmers' income during post-eruption land recovery.
Co-Authors Christanti Agustina Istika Nita Kurniawan Sigit Wicaksono Mualif Adi Saputra Pramudito Kartiko Dumipto Sri Rahayu Utami Ustiatik, Reni Zaenal Kusuma