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Changes of Soil Physical and Chemical Characteristics of Vertisol by Organic Matter and Sands Applications Mindari, Wanti -; Sasongko, Purnomo Edi; Santoso, Setyo Budi
JOURNAL OF TROPICAL SOILS Vol. 28 No. 2: May 2023
Publisher : UNIVERSITY OF LAMPUNG

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.5400/jts.2023.v28i2.79-87

Abstract

Vertisol has a clay texture, high micropores, and high water and nutrient absorption ability. The high water content of Vertisol causes the air to decrease, thus inhibiting root development. Stretching of the Vertisol structure is expected to increase soil porosity and reduce ion and water absorption. This study examines interactions between organic matter and percent sand on soil porosity and nutrient availability. The study was arranged according to a factorial Completely Randomized Design (CRD), repeated three times. The first factor was seven kinds of organic matter (control, cow dung + banana peel compost, cow dung + leaf litter compost + compost water hyacinth + cow dung, humin, humic acid, and biochar. The application doses are respectively for each treatment: humic acid and humin 20 kg ha-1, biochar 1 Mg ha-1, compost+manure fertilizer 15 Mg ha-1. Changes in soil chemical characteristics were evaluated against pH, C-org, and Available-P, while changes in soil physical characteristics were evaluated against bulk density, particle density, and soil porosity. The results showed that the combination of organic matter and percent sand could improve the physical and chemical characteristics of the soil. Bulk density (BD), particle density (PD), and soil porosity increased with the addition of sand. The organic matter significantly correlated with improving soil properties was humic acid, humin, biochar, compost, and manure, with the best percentage of sand at 20%.
Optimalisasi Lahan Di Bawah Tegakkan Tanaman Kopi Melalui Budidaya Tanaman Kapulaga (Elletria cardamomum), Di Desa Sumber Rejo, Purwosari, Kabupatrn Pasuruan Purwadi; Dinna Hadi Sholikah; Jojok Dwiridotjahjon; Purnomo Edi Sasongko
Jurnal Pengabdian Magister Pendidikan IPA Vol 8 No 3 (2025): Juli-September 2025
Publisher : Universitas Mataram

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.29303/jpmpi.v8i3.12422

Abstract

Sumber Rejo village is one of the villages in Purwosari district, Pasuruan Regency, which is famous for a coffee production. The livelihood of the people of Sumber Rejo village largely relies on the results of coffee plantations and farm workers, where coffee production is still relatively low. The farming results from the 24.3 ha of people's coffee plantation land owned by members of the “Sinar Agro Permata” farmer group, where in the 2024 harvest season, the average is only 2 quintals per hectare of ground dry coffee. In general, the existing conditions of Kucur Hamlet, Sumber Rejo Village, Purwosari District, Pasuruan Regency are as follows: (1) not optimal land use under the coffee plant stand with cardamom biopharmaceutical plant commodities, which are economically very promising. (2) Not many farmers know the high economic value of cardamom plants. (3) The participation of the farmer group “Sinar Agro Permata” in supporting the development and improvement of economic capacity through the development of a cardamom plant commodity nursery. Based on the existing conditions mentioned above, the purpose of community service activities is to help find solutions to problems including 4 (four ) aspects, namely the following : (1) optimization of land under the coffee stand with cardamom plant cultivation, (2) assistance in producing cardamom seeds, (3) assistance in cardamom cultivation on agroforestry land under the coffee plant stand, (4) empowering Poktan” Sinar Agro Permata” in an effort to increase the economic capacity of the community through cardamom breeding efforts. Methods used (1) provide understanding, socialization, and utilization/optimization of land.under the coffee stand with plants of high economic value “cardamom", (2) provide assistance in producing cardamom seeds under the coffee stand, (3) provide assistance in cardamom cultivation techniques on land under the coffee plant stand. (4) Empowering Poktan “Sinar Agro Permata”. The result of community service is cardamom seeds, and a demo of cardamom cultivation plots under the coffee plant stand Keywords: Cardamom, Optimization, Nursery
Mitigating Heavy Metal Contamination in Agricultural Soils with Biosilica-Humic Acid as Soil Amendment Strategies in Industrial Peripheries Chakim, M Ghufron; Mindari, Wanti; Sasongko, Purnomo Edi
Acta Solum Vol 3 No 3 (2025): Juli 2025
Publisher : Department of Soil, Faculty of Agriculture, Lambung Mangkurat University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20527/actasolum.v3i3.3367

Abstract

Soil contamination by heavy metals poses a significant threat to sustainable agriculture, especially in areas adjacent to industrial zones. This study demonstrates that while the initial application of the biosilica-humic acid (BSi-HA) soil amendment did not result in statistically significant changes in soil chemical properties within the first 7 days of incubation, prolonged incubation for 60 days revealed meaningful effects, particularly in reducing heavy metal availability in soil. Significant decreases in iron (Fe) and lead (Pb) concentrations were observed over time, with Fe reductions ranging from 45–67% and Pb reductions between 8–40%. These results are attributed to the synergistic effect of functional groups in BSi-HA—especially the carboxyl (–COOH) and hydroxyl (–OH) groups in humic acid—which exhibit high metal-binding affinity under acidic conditions (pH ~5). Although soil fertility parameters such as C-organic content and cation exchange capacity (CEC) showed a declining trend due to microbial activity during incubation, the ability of BSi-HA to immobilize heavy metals without exceeding safe thresholds highlights its potential as a sustainable soil amendment. Moreover, previous findings indicating reductions of up to 90% for Pb and 76% for Cd in plant tissues further support the efficacy of BSi-HA in mitigating heavy metal contamination in agricultural soils near industrial zones. Further long-term studies are recommended to evaluate BSi-HA's remediation capacity, persistence, and impact on crop yield and food safety. Combining biosilica and humic acid offers a promising, eco-friendly approach for managing heavy metal contamination in soils.
Identifikasi Salinitas Tanah dan Produktivitas Lahan Sawah di Hilir Kabupaten Lamongan dan Tuban Hamidah, Nilna Murobbiyah; Sasongko, Purnomo Edi; Mindari, Wanti
Agroteknika Vol 8 No 3 (2025): September 2025
Publisher : Green Engineering Society

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55043/agroteknika.v8i3.538

Abstract

Salah satu permasalahan lahan pertanian adalah terjadinya salinisasi tanah yang biasa terjadi pada lahan yang berdekatan dengan garis pantai. Kabupaten Lamongan dan Tuban merupakan dua daerah yang berdampingan dan berbatasan dengan garis pantai utara. Kedua daerah merupakan dua daerah yang berkontribusi dalam produksi padi tertinggi di Jawa Timur. Keduanya memiliki bagian pesisir yang dimanfaatkan untuk kegiatan budidaya sehingga memerlukan perhatian. Penelitian ini bertujuan untuk mengidentifikasi salinitas tanah dan dampaknya terhadap hasil produksi padi di hilir Kabupaten Lamongan dan Tuban. Penelitian ini menggunakan metode deskriptif eksploratif dan kegiatan pengambilan sampel tanah dilakukan dengan menggunakan metode cluster sampling berdasarkan pada jarak titik pengambilan sampel dengan garis pantai. Titik pertama ditetapkan pada jarak sekitar 2 km dari garis pantai, lalu berjarak 1 km ke titik berikutnya. Lahan T1 memiliki nilai EC tertinggi yaitu 0,65 dS.m-1 dan kurang dari 2 dS.m-1 sehingga dikategorikan sebagai lahan non salin dan pengaruhnya terhadap tanaman dapat diabaikan. Penggunaan pupuk anorganik (Urea dan Phonska) yang melebihi dosis tidak meningkatkan hasil produksi, melainkan pengaruh positif dan signifikan berasal dari masukan pupuk kandang yang diberikan di lahan. Penambahan bahan organik berupa pupuk kandang ke lahan dapat ditingkatkan untuk meningkatkan kestabilan sifat fisik dan kimia tanah serta hasil produksi.
Identification of Critical Land based on Land Damage Standard Criteria in Manten Sub Watershed, Malang City Garciah, Anisah Aprilia; Maroeto, Maroeto; Sasongko, Purnomo Edi
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 14 No. 5 (2025): October 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtepl.v14i5.1650-1660

Abstract

Land is an important part of the watershed because it is where the hydrological process occurs. There are several problems that can lead to land damage, especially in the downstream area of the watershed, precisely in the Manten Sub-watershed because it has the potential to become critical land. Therefore, this research was conducted with the aim to overcome the existing problems, it is necessary to identify the standard of land degradation in the Manten Sub-Watershed area in accordance with PP No. 150 of 2002. Manten sub-watershed covers 4 sub-districts namely Wajak, Poncokusumo, Tajinan, and Bululawang. Land use in Manten sub-watershed is divided into 3, namely rice fields, kailyards and fields. Based on the results of the analysis of all land use in Manten Sub Watershed, all parameters that have been observed do not exceed the critical threshold criteria except for the redox parameter has a very low value of <200mV. However, this condition can still be improved with proper management such as improving soil aeration using the addition of organic materials so as to increase oxygen levels in the soil and increase redox values.
Directions for Land Conservation Based on Determining the Erosion Hazard Index (EHI) Using the RUSLE Method in Sub-Watersheds Gunting, Jombang Novita, Dian; Wijaya, Kemal; Sasongko, Purnomo Edi
Jurnal Agrinika: Jurnal Agroteknologi dan Agribisnis Vol 8 No 1 (2024): MARCH
Publisher : Kadiri University - Faculty of Agriculture

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30737/agrinika.v8i1.5047

Abstract

Land damage generally occurs due to erosion by the flow of rainwater on the soil surface. Erosion is closely related to the intensity of rainfall in an area and the slope of the land (slope). Soil erosion is an environmental problem which, if left unchecked in the long term, can reduce soil fertility. The Erosion Hazard Index (EHI) is used as a solution in controlling erosion at certain locations. The research was conducted in the Kali Gunting Sub-watershed in Wonosalam District, Jombang, East Java, in January 2021 to April 2023. The research locations covered several villages, namely: Galengdowo, Jarak, Wonomerto, Sambirejo, Wonosalam, Carangwulung, Panglungan, Wonokerto and Sumberrejo. Meanwhile, for soil sample analysis activities carried out at the Land Resources Laboratory I and II of the Faculty of Agriculture, East Java "Veteran" National Development University. Determination of the Erosion Hazard Index (EHI) is conductedusing the RUSLE method. The results showed that the villages of Carawangwulung, Jarak, Wonokerto, Sumberejo, Wonosalam, Wonomerto, Galengdowo, Sambirejo and Panglungan had EHI in the very low category. Efforts that can be made to maintain the rate of erosion are to maintain annual plants, add organic mulch from the remaining twigs and leaves, change traditional terraces to bench terraces and apply the Groundwater Conservation Area system. Furthermore, land with traditional terrace conservation in Sambirejo and Wonokerto sub-districts can be replaced by making bench terraces.
Study of land potential based on soil characteristics using interpolation and scoring methods for non agricultural uses: a case study in Wonosalam, Jombang District, East Java Siswanto, Siswanto; Sasongko, Purnomo Edi
Agrovigor Vol 17, No 1 (2024)
Publisher : Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/agrovigor.v17i1.22551

Abstract

The state asset land managed by UPN "Veteran" East Java is located in the Wonosalam District based on land certificate data issued by the Jombang BPN covering 13.5 hectares. Currently more than 50% of the land has not been used optimally to support learning, research and community service. The problems that arise in utilizing land assets to support learning, research and community service are 1) the legal boundaries of land ownership are not yet clear, 2) there is no land use master plan to support the learning process, 3) there is no potential data that can be used. prepare use and development plans. Against the background of the problems above, this research aims to map the potential of state land assets by "spatial interpolation, scoring and weight overlay" of land characteristics. Interpolation is a way of calculating the area of several representative measurement points, while scoring and "Weight Overlay" is a facility provided by ArcMap GIS which combines input spatial data with weighting (weight factor) and scoring. Land unit maps are obtained from overlaying relief, geology, slope and land use maps. Interpolation, Scoring and Weight Overlay of the nine land characteristics yielded a potential land asset for buildings, good category 16.61% (44,130.38 m2); moderate 25.66% (67,382.75 m2) and bad 7.523% (19,784.88 m2). Playing field potential, good category 54.73% (71,865.05 m2) and medium 45.27% (59,432.62 m2). Potential for road infrastructure development in the good category 32.38% (42513.74 m2); Moderate 42.68% (56035.24 m2) and Bad 24.94% (32748.69 m2), and all of these potentials are in Slightly Flat topography (Slope, 0-3%) to hilly (Slope, 15-25%).
PENGARUH PEMBERIAN BAHAN ORGANIK DAN PASIR TERHADAP PERUBAHAN KARAKTERISTIK KIMIA VERTISOL Jayanti, Fara Amilia; Mindari, Wanti; Sasongko, Purnomo Edi
Agros Journal of Agriculture Science Vol 26, No 1 (2024): Januari
Publisher : Fakultas Pertanian, Universitas Janabadra

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37159/jpa.v26i1.4052

Abstract

Vertisol has a high clay content which causes this soil to expand if wet and wrinkle if dry. The fertility level of vertisol is relatively low, so it is necessary to improve soil quality through the provision of organic matter and sand. This study was prepared based on the Complete Random Design (RAL) Factorial consisting o[1]f two factors. The first factor is 4 kinds of organic matter (B) consisting of control (B0), banana peel compost + cow dung (10:1) (B1), leaf litter compost (B2), and hyacinth compost + cow dung (B3). Compost is applied at a dose of 15 tons.ha-1. The second factor is the three percentages of sand material (P) consisting of 0% (P0), 20% (P1), and 40% (P2). The chemical characteristics of the soil analyzed are pH, c-organic, n-available, p-available, and CEC. The results showed that the application of organic matter and sand had a significant effect on c-organic and nitrate. While at pH, ammonium, p-available, and CEC have no significant effect. Key-words: Vertisol, soil improver, chemical characteristicsINTISARI Vertisol mempunyai kandungan liat yang tinggi yang mengakibatkan tanah ini mengembang jika basah dan mengkerut jika kering. Tingkat kesuburan vertisol tergolong rendah, sehingga perlu adanya perbaikan kualitas tanah melaui pemberian bahan organic dan pasir. Penelitian ini disusun berdasarkan Rancangan Acak Lengkap (RAL) Faktorial yang terdiri dari dua factor. Factor pertama yaitu 4 macam bahan organik (B) yang terdiri dari kontrol (B0), kompos kulit pisang + kotoran sapi (10:1) (B1), kompos serasah daun (B2), dan kompos eceng gondok + kotoran sapi (B3). Kompos diaplikasikan dnegan dosis 15 ton.ha-1. Faktor kedua yaitu tiga persentase pemberian material pasir (P) yang terdiri dari 0% (P0), 20% (P1), dan 40% (P2). Karakteristik kimia tanah yang dianalisis yaitu pH, c-organik, n-tersedia, p-tersedia, dan KTK. Hasil penelitian menunjukkan bahwa pemberian bahan organic dan pasir memberikan pengaruh secara nyata terhadap c-organik dan nitrat. Sedangkan pada pH, amonium, p-tersedia, dan KTK tidak memberikan pengaruh nyata. Kata kunci: Vertisol, Pembenah Tanah, Karakteristik Kimia
Accumulation of Heavy Metal Copper (Cu) in Mangrove Vegetation in River Flow of the Sea Coast Triswanti, Dina Riska; Arifin, Moch; Sasongko, Purnomo Edi
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 14 No. 2 (2025): April 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtep-l.v14i2.352-361

Abstract

Mangroves have ecological functions, one of which is being able to absorb and accumulate heavy metals which can pollute the environment. The aim of the research is to assess the ability of mangroves to accumulate the heavy metal Cu. The research location is on the East Surabaya River Coast. The research method is purposive sampling with a distance of 250 m from one point to another. The pH value is classified as neutral to slightly alkaline. The salinity value is classified as very high. The texture of mangrove sediments has fine particles consisting of clay and dust. Cu concentrations in sediments are still below quality standards according to the United States Environmental Protection Agency (US-EPA). The Cu concentration in the sediment was highest in the Tambak Oso River with an average of 50.50 mg/kg. The concentration of heavy metals in the roots is higher than in the leaves. The bioconcentration factor (BCF) value is classified as the excluder, while the translocation factor value is classified as the phytostabilization and phytoextraction classes. Keywords: Estuaries, Mangroves, Pollution, East surabaya, Cu toxicity.
Analysis of Soil Erodibility Value Using the Wischmeier-Smith Method Pradana, Marchelino Rendi; Sasongko, Purnomo Edi; Maroeto, Maroeto
Jurnal Teknik Pertanian Lampung (Journal of Agricultural Engineering) Vol. 14 No. 5 (2025): October 2025
Publisher : The University of Lampung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.23960/jtepl.v14i5.1778-1784

Abstract

Soil erodibility is an important factor in determining soil loss. The objective of this study was to evaluate the soil erodibility value based on the Wischmeier-Smith Method. The study was carried out in Jatiarjo Village, Prigen District, Pasuruan Regency, at four land use units (LUU), including Mounts (MO), Mixed Garden (MI), Monoculture Garden (MG), and Shrubs (SR). Wischmeier-Smith algorithm was used to determine the erodibility values and classification. Results showed that shrub was identified as the land use with the highest potential for erosion and erodibility value. The correlation between clay fraction and erodibility has a negative value wit r = -0.76, while other fractions had r value < 0.5. This implied that the clay fraction and soil erodibility have an inverse relationship, where each increase in the clay fraction value will be followed by a decrease in the erodibility value. One way to reduce soil erodibility is to increase plant diversity on the land. Apart from adding organic matter, a variety of plants also have roots that are able to bind soil aggregates and help absorb water into the soil, thereby reducing water flow on the surface. If conservation is not taken seriously, it can undoubtedly result in.