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All Journal Jurnal Ecosolum Journal of Tropical Soils Jurnal Dinamika Pengabdian (JDP)
Asmita Ahmad
Hasanuddin University
Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Engineering Environmental Science

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SIFAT FISIK TANAH YANG MEMENGARUHI KEJADIAN LONGSOR DI MAKALE SELATAN: The Physical Properties of Soil that Affected the Landslide Event in South Makale Tania Patandung; Asmita Ahmad; Rismaneswati
Jurnal Ecosolum Vol. 9 No. 2 (2020): DESEMBER
Publisher : Universitas Hasanuddin

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/ecosolum.v9i2.8952

Abstract

The soil susceptibility increases in line with decreased soil stability and the ability of soil to pass water which, affected by the soil's physical characteristics. The research aims to analyze the physical properties of soil that affected landslide events in South Makale. This research using the method of comparative analysis by comparing the soil characteristic in the landslide and non-landslide areas. The soil has 6 class textures namely silt loam, loam, clay loam, silty clay loam, silty clay, and sandy clay loam. Soil Permeability ranges 0.22-6.98 cm/h (slowly-rather quickly). On the non-landslide areas, soil permeability is relatively low with values of 0.55 to 0.72cm/hour. The soil liquid limit value on the landslide area reached the value max of 67.7%, with the plasticity index value max 21.77%. The liquid limit in the non-landslide area reached a value max of 45.0% with a plasticity index value max 8.56%. Soil with silt and clay fraction dominant have a relationship with the landslide event. Soil with the silt and clay fraction dominant causes a decrease in the permeability value and affects the increase in liquid limit value and soil plasticity index.
Soil Development from Volcanic Ash Based on Different Pyroclastic Composition Asmita Ahmad; Muchtar Salam Solle; Christianto Lopulisa
JOURNAL OF TROPICAL SOILS Vol 24, No 3: September 2019
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2019.v24i3.135-140

Abstract

Potential volcano in several provinces in Indonesia played a significant role in the formation and quality of soil development. Soils that developed from the volcanic ashes often thought to contribute greatly to improve soil fertility, without regard to the nature and composition of the volcanic ash produced. Volcanic ash generated from the results in volcanic activity has a different composition, there are basaltic, andesitic and granitic, thereby affecting the process of formation and characteristics of the soil. The Objective of this study is to determine the soil development from different types of pyroclastic generated from Lokon volcano in North Sulawesi. The coordinates of research was in 1o 21' 18.0" N and 124o 49' 20.2"E. this research used ARL Quant X (EDXRF Analyzer) for X-Ray Fluorescence (XRF), Shimadzu XRD-7000 for  X-Ray Diffractometer (XRD), geology map (scale 1:250,000), topographic map (scale 1:50,000), XRD software, GIS 10.3 software. Soil analysis for texture, pH, C-Organic, and cation exchange capacity (CEC). There are two types of pyroclastic as the source of soil development from volcanic ash, there are; 1) basaltic pyroclastic with 43.26% Si02 that are resulted from the first magmatic eruption and 2) andesitic pyroclastic with 5.09% Si02 that are resulted from the late magmatic eruption. Basaltic pyroclastic contains Fe 37.63%, Al 11.35%, Ca 13.17% and Mg 5.69%, while andesitic pyroclastic contains Fe 38.35%, Al 6.87%, and Ca 8.61%. Rainfall ranges from 2000-3500 mm/yr helped the soil formation and influenced the character of the soil, such as sandy loam of soil texture, 3.08% of soil C-organic content, 23.24 cmol+/kg of CEC and 148.93 cmol+/kg of clay CEC. Clay minerals content of the soil is vermiculite, kaolinite and, halloysite. Cation supply from basaltic pyroclastic influenced the formation of vermiculite mineral, whereas andesitic pyroclastic more influences the formation of the kaolinite mineral. Formation of soil texture with a predominance of the sand fraction is more influenced by the type of andesitic pyroclastic that more resistant to weathering processes.Keywords: Soil; volcanic ash; pyroclastic; vermiculite; kaolinite
PEMBERDAYAAN PETANI MELALUI PELATIHAN SELIDIK CEPAT KESUBURAN TANAH SAWAH DI DESA PANAIKANG, KECAMATAN MINESATENE, PANGKEP Asmita Ahmad; Muh Jayadi; Risky Nurhikmayani; Rahmawati; Zulkarnain Chairuddin; Muh. Ansar; Sartika Laban; Nirmala Juita; Ahmad Fauzan Adzima; Balqis Nur Aisyah; Maksum Madjidi; Magfirah Djamaluddin; Sulfadli S; Ahmad Tirta Setiadi; Adiet Nurholis Al Gani; Idul Idul; Mutmainna Mutmainna; Istiqama Maulidina Annisa; Nova Tries Ardani
Jurnal Dinamika Pengabdian (JDP) Vol. 9 No. 1 (2023): JURNAL DINAMIKA PENGABDIAN VOL. 9 NO. 1 OKTOBER 2023
Publisher : Departemen Budidaya Pertanian Fakultas Pertanian UNHAS

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20956/jdp.v9i1.30235

Abstract

Penurunan hasil produksi dalam satu dekade terakhir telah dirasakan oleh masyarakat petani di desa Panaikang, Kecamatan Minasatene, Kabupaten Pangkep. Berbagai upaya dilakukan untuk meningkatkan hasil panen. Ketidaktahuan petani tentang permasalahan kesuburan tanah, mengakibatkan para petani tidak dapat menemukan solusi terhadap permasalahan yang dihadapi dalam memperbaiki/mengembalikan kesuburan tanah. Oleh sebab itu dibutuhkan pelatihan selidik cepat kesuburan tanah sawah untuk mengatasi permasalahan degradasi tanah di lahan sawah. Pelatihan diberikan secara langsung dengan mempraktekkan bagaimana menggunakan alat Perangkat Uji Tanah Sawah (PUTS) tanah sawah, dan dilanjutkan dengan simulasi yang dilakukan langsung oleh beberapa kelompok tani. Hasil uji kesuburan tanah dengan alat PUTS, memiliki nilai keakuratan terutama terkait pH tanah, Nitrogen, dan Posfor, yang sudah dapat dijadikan rujukan awal dalam penanganan status kesuburan tanah dan rekomendasi peningkatan kesehatan tanah. Nilai pH tanah berbanding lurus dengan kandungan hara-hara yang terdapat di dalam tanah. Perbedaan nilai uji PUTS dan uji laboratorium, disebabkan oleh adanya perlakuan yang telah diberikan oleh petani pada tanaman padi sawah berupa pemupukan sebelum pengambilan sampel tanah, sehingga memberikan hasil yang berbeda. Uji PUTS sebaiknya dilakukan sebelum penanaman padi sawah atau setelah panen, sehingga terbebas dari kesalahan pembacaan data. Pembentukan Desa Mitra menjadi keberlanjutan kegiatan sebagai wujud pendampingan petani dalam meningkatkan kesuburan tanah sawah di Desa Panaikang. Kata kunci: Tanah, petani, PUTS, desa mitra, Pangkep.   ABSTRACT The farming community in Panaikang Village, Minasatene District, Pangkep Regency, has felt a decline in production yields in the last decade. Various attempts were made to increase crop yields. Farmers' ignorance of soil fertility problems resulted in farmers being unable to find solutions to the issues they faced in improving/restoring soil fertility. Therefore, training is needed to quickly investigate the fertility of paddy soil to overcome the problem of soil degradation in paddy fields. The training was given directly by practicing using the Rice Field Soil Test Tool (PUTS) for rice fields and continued with simulations carried out directly by several farmer groups. The results of soil fertility tests using the PUTS tool have accuracy values, especially regarding soil pH, Nitrogen, and Phosphorus. These can be used as an initial reference in handling soil fertility status and recommendations for improving soil health. The pH value of the soil is directly proportional to the nutrient content in the soil. The difference in PUTS test values and laboratory tests is caused by the treatment given by farmers to lowland rice plants in the form of fertilization before taking soil samples, thus providing different results. The PUTS test should be carried out before planting lowland rice or after harvest to avoid data reading errors. The formation of Partner Villages is a continuation of activities as a form of assistance to farmers in increasing the fertility of rice fields in Panaikang Village. Keywords: Soil, farmer, PUTS, partner villages, Pangkep.
Co-Authors Adiet Nurholis Al Gani Ahmad Fauzan Adzima Ahmad Tirta Setiadi Balqis Nur Aisyah Idul Idul Istiqama Maulidina Annisa Lopulisa, Christianto Magfirah Djamaluddin Maksum Madjidi Muchtar Salam Solle Muh. Ansar Muh. Jayadi Mutmainna Mutmainna Nirmala Juita Nova Tries Ardani Rahmawati Risky Nurhikmayani Risma Neswati, Risma Sartika Laban Sulfadli S Tania Patandung Zulkarnain Chairuddin