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Analisis Spasial Evaluasi Kesesuaian Lahan Tanaman Hortikultura pada Lahan Pertanian di Kecamatan Sidemen, Kabupaten Karangasem Irene Levina Yulianti Sinaga; I Made Mega; Ni Made Trigunasih
Nandur Vol 3 No 4 (2023)
Publisher : Fakultas Pertanian, Universitas Udayana

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Horticultural crops, especially fruits and vegetables contain nutritional components, namely sources of vitamins and minerals needed to support human nutritional needs. To produce horticultural crops optimally, it is necessary to evaluate land suitability. This study aims to determine actual and potential land suitability classes as well as spatial distribution for horticultural crops, limiting factors, and land use directions that can be recommended on dry land in Sidemen District. This research was conducted using survey methods, soil analysis in the laboratory, and land suitability classification using the 2011 Ritung land evaluation technical guidelines by matching the quality/characteristics of the land with the growing requirements of the plants being evaluated. The horticultural crops evaluated included Chinese cabbage, red chilies and long beans. The results showed that the actual land suitability class for horticultural crops (petsai, red chili, and long beans) was classified as S3 (marginally appropriate) up to N (not suitable) with the limiting factors of temperature, rainfall, texture, P-available, and slope. Potential land suitability classes for horticultural crops (petsai, red chili and long beans) are classified as S1 (very suitable) to S3 (marginally suitable) with the limiting factors of temperature, texture and slope. Efforts to improve land suitability class can be done by cropping pattern setting, applying fertilizers, and making terraces.
Evaluasi Kesuburan Tanah pada Lahan Sawah Berbasis Sistem Informasi Geografis di Kecamatan Rendang Dwiki Sinatrya Putra; Ida Bagus Putu Bhayunagiri; Ni Made Trigunasih
Nandur Vol 4 No 1 (2024)
Publisher : Fakultas Pertanian, Universitas Udayana

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Indonesia is an agricultural country which rice is the main food source The productivity of rice plants in Rendang District continues to decline. Rice productivity from 2011 to 2014 decreased from 6.51 tons/ha down to 5.28 tons/ha according to BPS data for Rendang District in 2021. This study aims to determine soil fertility status, limiting factors, and soil management efforts to improve soil fertility. This research was carried out in Rendang District from July to September 2023. The methods used include survey methods and soil tests in the laboratory. The chemical properties of the soil tested include CEC, base saturation, P-total, K-total, C-organic. Assessment of soil fertility status based on the results of soil chemical properties analysis is matched with Soil Fertility Status Assessment Criteria according to PPT in 1995. The results showed that there were two classes of soil fertility status, namely low and medium. Low fertility status is found in homogeneous land units I (Rendang, Nongan, and Pesaban Villages) and homogeneous land units III (Menanga Village). Low fertility status is being found in homogeneous land units II (Menanga, Rendang, Nongan, Pesaban Villages). The parameters that become limiting factors are P-total and K-total. Based on the results of the study, it is recommended to fertilize SP-36, KCl, and the addition of organic fertilizers according to the constraints of soil fertility parameters and an analysis of the fertilizer needs should be carried out to determine the right dose according to the cultivated plants.
Pengaruh Perubahan Iklim terhadap Faktor Erosivitas Hujan di DAS Buleleng Ni Made Ely Ariani; Ni Made Trigunasih; I Wayan Narka
Nandur Vol 4 No 1 (2024)
Publisher : Fakultas Pertanian, Universitas Udayana

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Perubahan iklim merupakan perubahan keadaan iklim yang dapat diidentifikasi dari perubahan sifat-sifat iklim yang menyebabkan fenomena ENSO yang terdiri atas El Niño dan La Niña. Perubahan iklim mempengaruhi erosi tanah melalui perubahan curah hujan dan kondisi hidrologi pada suatu DAS yang berdampak pada ekosistem dan kesejahteraan manusia. Salah satu faktor yang mempengaruhi erosi pada persamaan USLE adalah nilai erosivitas hujan yang berkaitan dengan curah hujan. Oleh karena itu, penelitian terkait pengaruh perubahan iklim terhadap faktor erosivitas hujan di DAS Buleleng perlu diteliti karena ini akan menjadi faktor langsung yang mempengaruhi erosi tanah. Penelitian ini bertujuan untuk mengetahui dampak perubahan iklim terhadap laju erosivitas hujan (R) secara spasial dan temporal untuk periode 2014-2022 di DAS Buleleng. Perubahan iklim dianalisis berdasarkan data curah hujan CHIRPS (Climate Hazards Group InfraRed Precipitation with Station Data) untuk mengetahui pola hujan selama periode penelitian. Nilai erosivitas dianalisis berdasarkan persamaan Bols. Hasil penelitian menunjukkan bahwa curah hujan di DAS Buleleng pada periode 2014-2022 mengalami peningkatan sebanyak 30% dengan adanya fenomena ENSO dan IOD. Nilai rata-rata erosivitas hujan di DAS Buleleng mengalami peningkatan akibat perubahan iklim secara temporal selama periode penelitian sebanyak 56%. Secara spasial, erosivitas hujan terkonsentrasi di wilayah hulu DAS Buleleng dengan curah hujan tahunan tinggi.
Identifikasi Jenis Bangunan di Daerah Bahaya Longsor di Desa Candikuning Adelia Novita Marampa; Ni Made Trigunasih; Putu Perdana Kusuma Wiguna
Nandur Vol 4 No 1 (2024)
Publisher : Fakultas Pertanian, Universitas Udayana

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This research aims to identify building types in landslide hazard areas and to determine the distribution of buildings in landslide hazard areas in Candikuning Village. The method used is detailed survey per building by assessing buildings in landslide hazard area by direct field survey. Field results show that building types in the hazard area are divided into 3 classes, namely high hazard class, medium hazard class, and low hazard class with 7 building categories consisting of tourism buildings, residential buildings, agricultural buildings, worship facilities, government buildings, and educational facilities. There are 8 buildings in the high hazard class area, where there are 7 residential buildings and 1 trade and service building. There are 584 buildings in the medium hazard class area consisting of 87 tourism buildings, 432 residential buildings, 51 trade and service buildings, 6 agricultural buildings, 4 worship facilities, 3 government facilities and 11 educational facilities. The total number of low hazard class is 1624 buildings which are divided into 180 tourism buildings, 1137 residential buildings, 153 trade and service buildings, 25 agricultural buildings, 23 government buildings and 22 educational facilities buildings. Tourism and residential buildings are in the high hazard class. Raising public awareness is essential in terms of building site selection. This can be achieved through selecting building sites away from steep slopes and proper land use by not planting annuals on slopes.
Analisis Daerah Rawan Bencana Kekeringan Berbasis Sistem Informasi Geografis di Kecamatan Selat, Kabupaten Karangasem, Provinsi Bali Dita Ayu Lorenza; Ni Made Trigunasih; Putu Perdana Kusuma Wiguna
Nandur Vol 4 No 1 (2024)
Publisher : Fakultas Pertanian, Universitas Udayana

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Selat Subdistrict is one of the areas that experience hydrometeorological disasters, namely drought almost every year, especially during the dry season. The purpose of the study is to classify the level of drought vulnerability and provide directions for mitigating drought disasters that occur in Selat Sub-district. The method used was scoring and weighting, as well as overlaying rainfall, slope, soil type, and land use maps through Geographic Information System (GIS) applications. The results showed that there are five levels of drought vulnerability, namely very low, low, medium, high, and very high. Drought vulnerability in Selat Subdistrict is dominated by moderate drought vulnerability with an area of 2,501.12 ha (34.78%), high drought vulnerability with an area of 2,081.59 ha (28.94%), low drought vulnerability level has an area of 1. 513.64 ha (21.05%), very low drought vulnerability level has an area of 837.16 ha (11.64%), and very high drought vulnerability level has an area of 258.99 ha (3.61%). Mitigation directions for areas with high drought vulnerability can be carried out by constructing dam in Muncan and Peringsari Villages. Mitigation directions for areas with very high drought vulnerability can be done by planting banyan trees and bamboo in the spring area, and harvesting water by collecting rainwater with reservoirs in each residence.
Pengembangan Komoditas Pertanian Berbasis Kesesuaian Lahan di Kecamatan Alor Tengah Utara Kabupaten Alor Nalle, Margiman S.; Lanya, Indayati; Trigunasih, Ni Made
Agrotrop : Journal on Agriculture Science Vol 13 No 3 (2023)
Publisher : Fakultas Pertanian Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/AJoAS.2023.v13.i03.p01

Abstract

Agricultural Commodity Development Based on Land Suitability in The District of Alor Central North Alor Regency. The development of agricultural commodities in Alor Regency is ased on land suitability. This study aims to analyze/land quality, analyze and create land use class maps, analyze farming priorities, create commodity zoning maps, and land use direction maps. Agricultural commodities include upland rice, corn, cassava, red chilies, tomatoes, robusta coffee, cocoa and cashew nuts. Using survey methods based on field observations, field and laboratory data, spatial analysis using remote sensing and information systems, land classification using land characteristics/quality methods with plant growing conditions. Commodity zoning and directions for agricultural land use by class based on the highest land, and existing land use. Feasibility of use with the calculation of the B/C Ratio. The results showed that the potential for upland rice, cassava, robusta coffee and cocoa were classified as marginally appropriate classes (S3wa12rc13), while corn, red chili, tomatoes, and cashew nuts were classified as quite appropriate classes (S2tcwa1lp12). Limiting factors include temperature, air availability, rooting media, and land preparation. The zoning of commodities in each land map unit includes corn, red chilies, tomatoes, and cashews. Directions for land use in mixed gardens, dry fields, paddy fields and rainfed rice fields are considered for the development of agricultural commodities with monoculture and polyculture cropping patterns. The B/C Ratio shows that agricultural commodities are feasible to be developed in North Central Alor District.
Evaluasi Kualitas Tanah Sawah Berbasis Sistem Informasi Geografis di Kecamatan Kediri untuk Menentukan Arahan Pengelolaan Tanah Pramudita, I Gede Made; Kartini, Ni Luh; Trigunasih, Ni Made; Saifulloh, Moh
Agrotrop : Journal on Agriculture Science Vol 14 No 2 (2024)
Publisher : Fakultas Pertanian Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/AJoAS.2024.v14.i02.p07

Abstract

Geospatial Evaluation of Soil Quality in Rice Fields: A GIS-Based Approach for Informed Soil Management in Kediri District. Intensive land use, devoid of conservation efforts, results in a decline in soil quality and diminished crop yields. This research aims to assess the quality of rice fields, identify limiting factors, and offer guidance for appropriate soil management in accordance with the conditions of rice fields in Kediri District. The study was conducted from June 2023 to January 2024 in Subak’s rice fields in Kediri District, Tabanan Regency. The survey method was employed for soil sample collection based on the Land Unit map. Samples were purposively taken and composited, followed by testing for parameters based on the 10 Minimum Data Sets. Research data was presented in map form using QGIS 3.28.5 software. The results, obtained by calculating the Soil Quality Index (SQI), indicate that the quality of rice fields in Kediri District is classified as good (93.7%) in Land Units I, II, IV, and V, with respective SQI values of 24.00, 21.00, 24.33, and 24.00. Additionally, it is classified as very good (6,3%) in Land Unit III, with an SQI value of 19.33. Limiting factors identified include soil bulk density, soil texture, organic carbon content, cation exchange capacity, base saturation, total nitrogen, available phosphorus, and microbial biomass carbon. The recommended soil management practices include the application of organic fertilizer, urea, and TSP/SP-36.
Potensi Penambahan Sludge Minuman Ringan Berkarbonasi untuk Meningkatkan Mutu Kompos Agustina, I Komang Yudi; Arthagama, I Dewa Made; Trigunasih, Ni Made; Narka, I Wayan; Sumarniasih, Made Sri
Agrotrop : Journal on Agriculture Science Vol 14 No 1 (2024)
Publisher : Fakultas Pertanian Universitas Udayana

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Potential Addition of Carbonated Soft Drink Sludge to Improve Compost Quality. This research to aims knowing the dosage mix carbonated soft drink sludge in producing the best quality compost. This research was conducted from January to May 2021 in Tegak Village, Klungkung and at the Soil and Environment Laboratory, Faculty of Agriculture, Udayana University. The design used was a completely randomized design (CRD) with 6 formulation treatments and 4 replications. The treatments included: A (3 kg cow dung + 1 kg rice straw + 0% sludge), B (2,5 kg cow dung + 1,5 kg rice straw + 12,5% sludge), C (2 kg cow dung + 2 kg rice straw + 25 % sludge) D (1,5 kg cow dung + 2,5 kg rice straw + 37,5 % sludge), E (1 kg cow dung + 3 kg rice straw + 50% sludge) and F (0,5 kg cow dung + 3,5 kg rice straw + 62,5% sludge). The results of statistical analysis showed that the treatment tested had a very significant effect on organic C, total N, C/N ratio, P-available, pH and EC but had no significant effect on K-available and water content of the compost produced. The best compost quality was obtained in treatment C (C-organic 31,76%; total N; 1,60%; C/N ratio 19,90; P-available 0,06%; K-available 0,07%; pH 7,47; water content 24,01 %), followed by treatments F (C-organic 23,86%; total N 1,55%, C/N ratio 15,40; P-available 0,04 %; K-avaliable 0,07%; pH 7,68; water content 24,83%) and E (C-organic 26,58%; total N 1,57%; C/N ratio 16,93; P-available 0,05%; K-available 0,07%;pH 7,57; water content 23.36%).
Analisis Kerusakan Tanah pada Lahan Sawah Berbasis Sistem Informasi Geografis di Kecamatan Kuta Utara Kabupaten Badung Girsang, Giyo Brem Dana; Trigunasih, Ni Made; Arthagama, I Dewa Made
Agrotrop : Journal on Agriculture Science Vol 14 No 2 (2024)
Publisher : Fakultas Pertanian Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24843/AJoAS.2024.v14.i02.p12

Abstract

Analysis of Soil Degradation in Rice Fields Based on Geographic Information System in North Kuta Subdistrict, Badung Regency. North Kuta district is one of the regions in the Badung district where a portion of the land is utilized as wilderness. The land productivity in North Kuta district is susceptible to degradation due to inconsistent land processing with conservation principles and the high transfer functions of the land. The research aims to assess the potential for land degradation, determine the status of land degradation, identify the distribution of soil degradation, and propose directions for treating land degradation in the wilderness areas of North Kuta district. The research employs a comparative descriptive method. By overlaying land-use maps, slope maps, and land type maps using geographic information systems, five homogeneous land units were identified. The observed land use consists of plains with field observations encompassing surface rocks and solum depth. Laboratory analysis of soil samples was conducted to determine weight contents, total porosity, texture, permeability, pH, electrical conductivity, and microbial count. The determination of degradation status is based on predefined criteria for land degradation. The research results indicate one class of potential soil degradation, specifically the potential for mild soil degradation. The potential for mild degradation is observed in Tibubeneng Village, Kerobokan Village, Kelod Village, Canggu Village, Kaja Village, and Dalung Village. The degradation status in the research area is mild, with porosity being a limiting factor in Changgu Village, Kerobokan, Kelod Village, and Dalung. Recommendations for improving the wilderness in the research area include providing organic material and implementing soil processing.
Kesesuaian Lahan Komoditas Pertanian dan Perencanaan Penggunaan Lahan Berbasis Geospasial di Kabupaten Malaka, Nusa Tenggara Timur Nahak, Senon Apriyanto; Lanya, Indayati; Trigunasih, Ni Made
Agrotrop : Journal on Agriculture Science Vol 14 No 1 (2024)
Publisher : Fakultas Pertanian Universitas Udayana

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Abstract

Agricultural Commodity Land Suitability and Geospatial-Based Land Use Planning in Malaka District, East Nusa Tenggara. Data and information on land suitability classes for various plant commodities must be available in Malaka District on a geospatial basis so that they are easily accessible. The technology used is a geographic information system (GIS). The aims of this study were to: (1) obtain land characteristics for land suitability classes, (2) map actual and potential land suitability classes, (3) land use plans based on land suitability, (4) provide a land suitability information system. This research was conducted in two sub-districts in Malaka Regency, East Nusa Tenggara. The analysis carried out in this study included: physiographical analysis, field surveys, soil analysis in the laboratory, land suitability analysis, making land suitability maps and land use planning maps, building a geospatial-based land suitability information system. The actual land suitability class for food crops, horticulture and plantations is classified as marginal suitable (S3wa1wa2wa3rc3na1na2na3eh1eh2Ip1) to unsuitable (Nwa2xc) limiting rainfall, dry months, humidity, effective depth, N-total, P2O5, K2O, salinity, slope, erosion hazard and rocks surface. Improvement efforts include tillage, fertilizing urea, phonska, KCl, making drainage channels, setting planting times, making ponds and making bench terraces. Potential land suitability classes are very suitable (S1), moderately suitable (S2wa1wa2rc3xceh1eh2Ip1) to marginally suitable (S3wa2) limiting rainfall, dry months, effective depth, salinity, slope, erosion hazard and surface rocks. West Malaka and Central Malaka Districts first priority in flat areas to develop corn, cassava, cashew nuts, green beans, shallots, tomatoes and watermelons as an alternative. Whereas in the Central Malaka District, the hilly relief is more suitable for coconut, cocoa and cashew plantations and the karst hill relief is an alternative for the development of corn, cassava, green beans, shallots, tomatoes and watermelons.
Co-Authors A.A.NYOMAN SUPADMA Abd. Rasyid Syamsuri Adelia Novita Marampa Agustina, I Komang Yudi AHMADI FAUZAN NUR RAHMAN AI Nyoman Sunarta Anak Agung Istri Agung Pramesti Apriadi, Putu Agung Artanaya, I Wayan Bintang Bayu Mahapati DEWA AYU CHYNTIA ANGELINA DEWA AYU PUTU SRI WAHYUNI DIBIA I N Dita Ayu Lorenza DJIAN NILAM SARI Dwiki Sinatrya Putra Fadilah Triani Putri Febriana, Anastasia GEDE WIJANA Girsang, Giyo Brem Dana Gusti Ngurah Alit Susanta Wirya I DEWA MADE ARTHAGAMA I DEWA MADE ARTHAGAMA I Gede Ketut Susrama I Ketut Suada I MADE ADNYANA I Made Mega I Made Mega I Made Mega I Nengah Netera Subadiyasa I Nyoman Dibia I NYOMAN MERIT I NYOMAN RAI I NYOMAN SUNARTA I NYOMAN WIJAYA I Wayan Narka I Wayan Narka I WAYAN NARKA I WAYAN NARKA I Wayan Narka I WAYAN SEDANA I.D.M. Arthagama I.N. Dibia I.N. Sunarta Ida Bagus Putu Bhayunagiri IMAS CAHYANINGTIYAS INDAYATI LANYA Irene Levina Yulianti Sinaga Isabella Tiurmauli Jencristy Gilberd Sitanggang Josua Sintong Martin Hutauruk KARTIKA DEWI OKTAFIANTI Kezia Angelia Febyna Putri M D DANA MADE SRI SUMARNIASIH MADE SRI SUMARNIASIH MOH SAIFULLOH Moh Saifulloh moh saifulloh, moh Nahak, Senon Apriyanto Nalle, Margiman S. NI KADEK ARY KRISNAYANTI Ni Luh Kartini Ni Made Ely Ariani NI NENGAH SONIARI NI NYOMAN ARI MAYADEWI NI PUTU UTARI HANDAYANI Nyoman Bintang Kartika Sari Pramudita, I Gede Made Prananda Yogathama Pribadi Putu Perdana Kusuma Wiguna Putu Perdana Kusuma Wiguna Putu Perdana Kusuma Wiguna RENI ANDRIANI NAIBAHO Risky Novelin Simatupang Sidabutar, Febrin SISKA MAILASARI SUMARNIASIH, MADE SRI T. Kusmawati TATIEK KUSMAWATI THRESIA ADHISYA SITORUS UTAMA, I WAYAN EKA KARYA VANDANI, YAYAN WIDHIANTHINI WIDHIANTHINI Wiraatmaja, Wayan WIYANTI WIYANTI YUDHA, I KADEK WISMA