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POTENSI LAHAN SAWAH UNTUK PENGEMBANGAN TANAMAN TEMBAKAU DI KABUPATEN BONDOWOSO Budiman, Subhan Arif; Maulia, Dina; Hermiyanto, Bambang; Basuki, Basuki
Jurnal Tanah dan Sumberdaya Lahan Vol. 11 No. 2 (2024)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtsl.2024.011.2.7

The plantation sector, especially tobacco plants, is the biggest contributor to the country's foreign exchange value non-mining through tobacco excise and export. With the increasing number of active smokers in Indonesia, the need for tobacco continues to increase, emphasizing the role of this crop in the economy and providing large profits for farmers. However, along with the growing issue of land use change, recently many tobacco plants have been planted on unsuitable land. The research was conducted on all rice fields in Bondowoso Regency from October 2022 to March 2023. The land suitability evaluation method was used to assess land characteristics that affect tobacco plant growth. The parameters used were soil pH, soil texture, C-organic, electrical conductivity, cations bases (K, Ca, Na, Mg), cation exchange capacity (CEC), base saturation, total N, available and exchangeable K, slope, temperature, and rainfall. Data analysis was carried out by matching techniques, namely matching land characteristics with the growing conditions of tobacco plants to get some suitable land suitability classes for tobacco plants. The results of the analysis showed that the area of land currently planted with tobacco reaches about 12,155.06 hectares, with a suitable class (S2) reaching 897.82 hectares, marginal (S3) reaching 1,614.44 hectares, and not suitable (N) reaching 9,642.79 hectares. Land that has the potential to grow tobacco is S2 (quite suitable) and S3 (marginal).

KARAKTER SPASIAL DAN TEMPORAL CURAH HUJAN BULANAN KABUPATEN JEMBER BERDASARKAN DATA CHIRPS Purnamasari, Ika; Abdillah, Moc. Reza Wahyu; Wijayanto, Yagus; Saputra, Tri Wahyu; Ristiyana, Suci; Budiman, Subhan Arif
Jurnal Tanah dan Sumberdaya Lahan Vol. 11 No. 2 (2024)
Publisher : Departemen Tanah, Fakultas Pertanian, Universitas Brawijaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21776/ub.jtsl.2024.011.2.13

Jember Regency is one of the national food storage areas. One of the most important resources in cultivating food crops is water which comes from rainfall. The existence of rainfall data is very important in planning and implementing agricultural activities. Limited rainfall data is the main problem for agricultural planning. One solution to this problem is to utilize rainfall data from CHIRPS (Climate Hazards Group Infrared Precipitation Station). The use of CHIRPS data is still biased data, so bias correction is needed to measure the level of accuracy of CHIRPS data for estimating rainfall in an area. Bias correction is carried out using two methods, namely multiple linear regression and power regression. The correction results show that the multiple linear regression method is able to produce monthly rainfall that is close to observations with an RMSE value of 3.9 and a coefficient of determination of 0.99. Temporally, the peak of the rainy season in Jember Regency occurs in December while the dry season is in August. In the rainy season (December-January and February) Jember Regency's rainfall is around 300-500 mm/month and in the dry season (June-July-August) it is in the range of 50-200 mm/month. Spatially, the northern part of Jember, especially Sumberbaru, Bangsalsari and Tanggul subdistricts, is wetter than the Jember Regency area as a whole. The southern part of Jember, especially those close to the coast, has lower rainfall than other regions. In the dry season, rainfall in this region is less than 20 mm/month.

Estimating the contents of Chlorophyll, Nitrogen, and Yields on Rice through Sentinel-2 Vegetation Indices in Heterogeneous Land Management Wijayanto, Yagus; Safitri, Mahardika; Purnamasari, Ika; Budiman, Subhan Arif; Saputra, Tri Wahyu; Regar, Arthur FC; Ristiyana, Suci
Indonesian Journal of Geography Vol 56, No 3 (2024): 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.87159

Addressing the global food demand is an urgent priority for governments worldwide. Efficient and effective methods for gauging crop production are crucial. Relying solely on ground-based measurements proves inefficient and expensive, prompting exploration of remote sensing using vegetation indices as a viable alternative. This study sought to achieve three objectives: estimating chlorophyll content in paddy fields, evaluating leaf nitrogen content, and predicting yields. The investigation utilized Sentinel-2A satellite imagery, Soil Plant Analysis Development (SPAD) for chlorophyll measurement, and employed statistical and accuracy analyses. Findings revealed an increase in chlorophyll and leaf nitrogen content from the vegetative to maturity phases, followed by a decline at maturity. NDVI and GNDVI emerged as superior to SAVI and VARI for chlorophyll estimation, attributed to their spectral sensitivity. Likewise, nitrogen prediction showed similar trends, with NDVI and GNDVI exhibiting better RMSE values compared to SAVI and VARI, albeit marginally. However, yield prediction accuracy varied, with NDVI proving most accurate, followed by SAVI, VARI, and GNDVI, indicating the latter's reduced predictive precision due to nitrogen sensitivity. In scenarios where nitrogen is not the predominant yield-limiting factor, NDVI could outperform GNDVI in forecasting yield. Received: 2023-07-22 Revised: 2024-04-18 Accepted: 2024-08-24 Published: 2024-10-10

Elemental composition and mineralogical characteristics of volcanic ash and soil affected by the eruption of Mount Semeru, East Java Setiawati, Tri Candra; Nurcholis, Mohammad; Basuki, Basuki; Budiman, Subhan Arif; Yudiantoro, Dwi Fitri
Journal of Degraded and Mining Lands Management Vol. 11 No. 3 (2024)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2024.113.5741

The eruption of Mount Semeru at the end of 2021 was responsible for emitting volcanic ash with specific characteristics. These unique mineralogy and chemical properties have both positive and negative effects on soil fertility, as excessive heavy metals adversely affect soil, plants, and the environment. Therefore, this study aimed to determine the distribution of volcanic ash cover from the eruption of Mount Semeru and investigate elemental composition as well as mineral characteristics of volcanic ash and soil covered by volcanic ash. The investigation was carried out in Supiturang village, Pronojiwo District, Lumajang, East Java, Indonesia. Sampling was carried out following the toposequence method, covering agricultural land within approximately ± 15 km from Mount Semeru. Pure volcanic ash was collected at sites not contaminated with soil. At the site location, it was found that the depth of volcanic ash cover ranged from “thin” (<2 cm) to “very thick” (>10 cm). The results of SEM and XRD analyses showed that of the pure volcanic ash contained quartz (50%), rock fragments (15%), plagioclase (12%), hornblende (10%), opaque (8%), and pyroxene (5%) minerals. The results of XRF analysis showed that the dominant elements in volcanic ash and soil were silica (Si), aluminum (Al), calcium (Ca), iron (Fe), and potassium (K). Several non-essential heavy metal elements found were Pb, Sn, and As, while rare minerals discovered were Y, Nb, Eu, and Yb at relatively low concentrations. The SEM analysis showed the structure of volcanic ash dominated by prismatic and blocky.

INTRODUKSI EKOWISATA SEVE (SUKAMADE ENCLAVE VILLAGE ECOTOURISM) KAWASAN TAMAN NASIONAL MERU BETIRI BANYUWANGI Kuntadi, Ebban Bagus; Sunartomo, Aryo Fajar; Subaharianto, Andang; Budiman, Subhan Arif; ihsannudin, ihsannudin; Luthfiyah, Lenny; Avenido, Cheska Andrea C; Panapanaan, Ansherine M
Jurnal Penelitian dan Pengabdian Kepada Masyarakat UNSIQ Vol 11 No 3 (2024): Oktober
Publisher : Lembaga Penelitian, Penerbitan dan Pengabdian Masyarakat (LP3M) UNSIQ

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32699/ppkm.v11i3.8077

Sukamade is one of the hamlets in Sarongan Village, Pesanggaran District, Banyuwangi Regency. Sukamade is an enclave village or a village that is spatially concentrated in the middle of the TNMB forest area and the community has a high dependence on the TNMB forest environment. The Sukamade community has economic, social and cultural vulnerabilities. This condition needs to be paid concern to by providing access to utilize the potential for ecotourism activities in Sukamade. Hopefully, the community will gain motivation to participate in conservation activities (community-based conservation). Pokmas PPA as one of the elements of society in Sukamade is introduced into Sukamade Enclave Village Ecotourism (SEVE). In order to accomplish SEVE, it is necessary to (a) strengthen the institutional capacity of Pokmas PPA; (b) Strengthening ecotourism knowledge and skills of Pokmas PPA members; (c) Strengthening ecotourism attractions; and D). Strengthening information and promotion media through social media. Institutional strengthening is carried out through training and assistance in the issuance of AD/ART, SOP, legality of notary deeds/AHU Kemenkumham, NPWP and bank accounts in the name of Pokmas PPA. The efforts to strengthen ecotourism knowledge and skills also need to be carried out in Pokmas PPA related to safety, services and interpretation-education. Strengthening ecotourism attractions is the basis for SEVE's introduction through the riverside coffee and jungle track attractions. Delivery of information and promotion of Pokmas PPA activities is carried out by providing training and assistance in creating and filling content for Facebook, Instagram, TikTok and YouTube accounts.

Using Geostatistics for Spatial Analysis of Soil Moisture Content, Electrical Conductivity, and pH at Paddy Fields Wijayanto, Yagus; Kustianto, Muhammad Aldian Dwi; Budiman, Subhan Arif; Purnamasari, Ika
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.v28i2.47-56

Soil is dynamic due to various internal and external processes exerted on the soil, resulting in unique soil characteristics in space in short and long distances. Geostatistics (kriging) is the method of quantifying the spatial variation of soil properties. This research was mainly aimed at applying geostatistics to quantify and interpolate the spatial dependence and structure of three soil properties, namely pH, EC, and Soil Moisture Content (SMC) in a small area. This research was conducted on paddy fields in Mlandingan Kulon Village, Situbondo Regency. Sampling was conducted on an area of 9.2 ha with 31 sample points. Normal data distribution was found for pH and EC, whereas this was not the case for SMC. The results of the analysis showed that most of the pH values were alkaline (>8), EC values were non-saline (<2 mm/cm), and SMC was in the low category (<20%). The results show that for three soil properties, weak dependencies were observed. The values of Root Mean Square Error (RMSE) confirmed that kriging with exponential was better compared to the spherical model, resulting in the RMSE of 0.546 (pH), 0.041 (EC), and 1.512 (SMC).

Comparison of soil physical quality index based on simple additive SQI and statistically modeled SQI methods for watershed management in Rembangan, Indonesia Hermiyanto, Bambang; Tika, Sukma Agustin Dyan; Budiman, Subhan Arif; Mandala, Marga; Fitriani, Vivi; Basuki, Basuki
Journal of Degraded and Mining Lands Management Vol. 12 No. 5 (2025)
Publisher : Brawijaya University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.15243/jdmlm.2025.125.8493

The physical quality of soil is determined by quantitative measurement tools, which are expressed in the form of soil quality indices. Methods for determining soil quality have been developed, but none have been standardized. This research aimed to determine the results of the soil physical quality index based on two methods, namely 1) simple additive SQI, and 2) statistically modeled SQI, followed by a sensitivity test to determine which method is more sensitive. This research was conducted in the Rembangan Sub-watershed, which comprises five sub-districts: Jelbuk, Arjasa, Patrang, Sukorambi, and Panti, with elevations ranging from 125.91 to 854.67 meters above sea level. Based on the paired t-test results, the soil physical quality index between the two methods was significantly different, with a p-value of 0.002. Meanwhile, the sensitivity test results showed that the statistically modeled method was more sensitive than the simple additive method. Thus, the statistically modeled method is the method that can be used to assess the soil physical quality index for land management guidance. The poor or low-quality class dominates the soil quality class, covering an area of 2,088.43 ha (79.43%). Land management actions based on soil quality are divided into three criteria: 1) “fixed efforts” for low-quality soil, 2) “enhanced efforts” for medium-quality soil, and 3) “maintenance efforts” for good-quality soil.

INTRODUKSI EKOWISATA SEVE (SUKAMADE ENCLAVE VILLAGE ECOTOURISM) KAWASAN TAMAN NASIONAL MERU BETIRI BANYUWANGI Kuntadi, Ebban Bagus; Sunartomo, Aryo Fajar; Subaharianto, Andang; Budiman, Subhan Arif; ihsannudin, ihsannudin; Luthfiyah, Lenny; Avenido, Cheska Andrea C; Panapanaan, Ansherine M
Jurnal Penelitian dan Pengabdian Kepada Masyarakat UNSIQ Vol 11 No 3 (2024): Oktober
Publisher : Lembaga Penelitian, Penerbitan dan Pengabdian Masyarakat (LP3M) UNSIQ

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32699/ppkm.v11i3.8077

Sukamade is one of the hamlets in Sarongan Village, Pesanggaran District, Banyuwangi Regency. Sukamade is an enclave village or a village that is spatially concentrated in the middle of the TNMB forest area and the community has a high dependence on the TNMB forest environment. The Sukamade community has economic, social and cultural vulnerabilities. This condition needs to be paid concern to by providing access to utilize the potential for ecotourism activities in Sukamade. Hopefully, the community will gain motivation to participate in conservation activities (community-based conservation). Pokmas PPA as one of the elements of society in Sukamade is introduced into Sukamade Enclave Village Ecotourism (SEVE). In order to accomplish SEVE, it is necessary to (a) strengthen the institutional capacity of Pokmas PPA; (b) Strengthening ecotourism knowledge and skills of Pokmas PPA members; (c) Strengthening ecotourism attractions; and D). Strengthening information and promotion media through social media. Institutional strengthening is carried out through training and assistance in the issuance of AD/ART, SOP, legality of notary deeds/AHU Kemenkumham, NPWP and bank accounts in the name of Pokmas PPA. The efforts to strengthen ecotourism knowledge and skills also need to be carried out in Pokmas PPA related to safety, services and interpretation-education. Strengthening ecotourism attractions is the basis for SEVE's introduction through the riverside coffee and jungle track attractions. Delivery of information and promotion of Pokmas PPA activities is carried out by providing training and assistance in creating and filling content for Facebook, Instagram, TikTok and YouTube accounts.

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