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All Journal Agrotrop : Journal on Agriculture Science International Journal of Biosciences and Biotechnology E-Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Jurnal Penelitian Pengelolaan Daerah Aliran Sungai Agrica: Journal of Sustainable Dryland Agriculture
WIYANTI WIYANTI
Program Studi Agroekoteknologi Fakultas Pertanian Universitas Udayana
Agriculture, Biological Sciences & Forestry Biochemistry, Genetics & Molecular Biology Chemistry Environmental Science

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Analisis Neraca Air Untuk Kebutuhan Air Irigasi di Daerah Aliran Sungai (DAS) Tukad Buleleng, Kabupaten Buleleng FIRDA ARFIANA; R. SUYARTO; WIYANTI WIYANTI
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.10, No.4, Oktober 2021
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

Analysis of Water Balance for Irrigation Water Needs in Tukad Buleleng Watershed, Buleleng Regency Population and human activity have increased so that land use changes resulting in the catchment area does not function optimally. Poor watershed function conditions result in water in the dry season becoming scarce. Drought occurs due to upstream imbalance of watersheds that undergo land function, so the water needs for rice fields are not met. The purpose of this study is to analyze the needs of irrigation water. The method used is descriptive quantitative by calculating from the stage of crop water requirement/CWR, farm water requirement/FWR and project water requirement/PWR. The results showed that the highest value of water needs/PWR projects occurred in the planting period I November III during the generative phase of 196,90 liters/second and the lowest occurred in the planting period II in May I during the fertilization and ripening phase 156,40 liters/second.
Pemetaan Potensi dan Kerawanan Longsor Lahan di Desa Belandingan, Desa Songan A dan Desa Songan B Kecamatan Kintamani, Kabupaten Bangli NI MADE DWI PRADNYASARI; WIYANTI WIYANTI; TATIEK KUSMAWATI
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.8, No.2, April 2019
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

Mapping of Landslide Potential and Susceptibility at Belandingan Village, Songan A Village and Songan B Village, Kintamani District ,Bangli Regency The research conducted in order to find out how the potential for landslides in the Belandingan Village, Songan A Village and Songan B Village. Scoring and overlay method used to determine the results of landslide potentials in the study area. Parameter used as the basis for overlay and scoring are soil types, rainfall data, structural geology, landform, slope and land use map. From the overlay result, 41 land unit were mapped on the research area. Based on scoring, there are 4 classes of landslide potential. They are potential including no Potential, low Potential, moderate Potential, high Potential. Most area of study area are are included as low Potential and medium Potential. Meanwhile high Potential mainly concentrated on the ancient caldera on west part of Batur Lake. Belandingan, Songan A and Songan B villages have various levels of landslide potential, starting from this non-Potentialous category, covering land units 34 and 39. Low potential on land units 26, 29, 25, 23, 21, 38, 3, 12 and 11. While on land units 36, 30, 31, 32, 14, 15, 16, 17, 19, 4, 20, 40, 24, 6, 13, 2, 37, 7, 8, 9, 27.10, 22, 41, 1. 5 and high potential on land units 33, 18, 35, and 28. The no Potential class mainly located in Songan A and Songan B Village with total area 244,17 Ha. The Low Potential class are located mainly in Songan A Village and Songan B Village with small amount in Belandingan with total area 1059,21 Ha. Moderate Potential class located in all with total area 1904,42 Ha . The High landslide Potential class located mainly in Songan B Village with small amount in Belandingan Village and Songan A Village with total area ??343,36 Ha.
Aplikasi Sistem Informasi Geografis (SIG) Untuk Kajian Fluktuasi Muka Air Tanah dan Karakteristik Akuifer di Kecamatan Denpasar Barat NI LUH AYU DANA LESTARI; NI MADE TRIGUNASIH; WIYANTI WIYANTI
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.8, No.3, Juli 2019
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

The Application of Geographic Information System (GIS) for Study of Groundwater Fluctuations and Characteristics of Aquifers at West Denpasar District Communities that have not been served by PDAM as much as 47.62%, use ground water to fulfill their clean water needs. The purpose of this study was to determine the distribution of dug wells, distribution of groundwater surface, fluctuations, flow direction and characteristics of aquifers in West Denpasar Subdistrict. This research was carried out by descriptive quantitative method. Analysis was carried out from survey data by using ArcGIS software. The results showed that the highest number of dug wells was found in Pemecutan Klod Village (31,25%). Groundwater surface depth in the dry season was 84.38% classified into 0-5 m class and in the rainy season 90.63% also classified as 0-5 m class too. Almost all of the southern West Denpasar Subdistrict has 0-5 m fluctuations. Groundwater in the West Denpasar Subdistrict is predicted to flow to the South, Southeast and Southwest. There are two types of aquifers in West Denpasar Subdistrict that is shallow aquifers and deep aquifers. Shallow aquifers are at 2-20 m depth with a maximum thickness of 18 m and are composed of passive and breccia material. Deep aquifers are found at 12-24 m depths with a minimum thickness of 12 m and are composed of passive and tufa material. It is estimated that both types of aquifers are good aquifers.
Karakteristik Hidrologi Tanah pada Berbagai Tingkatan Umur Tanaman Penghijauan di Desa Pelaga, Kecamatan Petang Kabupaten Badung NI KOMANG HARI PADMAYANI; I NYOMAN SUNARTA; WIYANTI WIYANTI
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.6, No.2, April 2017
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

Characteristics of Soil Hydrology At Various Age Levels of Reforestation In Pelaga Vilage Petang Ditrict, Badung Regency Nowadays many areas are experiencing drought during the dry season and flooding during the rainy season, so the water is no longer available throughout the year due to an imbalance of the hydrological cycle. The imbalance is caused by two factors: natural factors and management factors. Reforestation plants are expected to have the function of forests as an effective natural run off control. The purposes of this research were to know the difference of hydrological characteristics at several age levels reforestation and to determine the role of plant ages in improving soil hydrological properties at Pelaga vilage. The data was analysed with descriptive quantitative method..The results from this research of characterized the hydrological at various age levels of reforestation was increased fluctuatingly. Available water on reforestation 1,2,3,4,5 years old and controls respectively 14.75%, 12.07%, 14.90%, 13.98%, 15.88%, and 12.22%. The highest characteristics of soil hydrology was achieve in the reforestation area of the five years old or after harvest was 15.88%. The increasing levels of water available between the ages of five years over control was 29.95%.
Aplikasi Sistem Informasi Geografis dan Penginderaan Jauh untuk Kajian Potensi dan Kerawanan Longsor di Daerah Aliran Sungai Tukad Buleleng, Kabupaten Buleleng WINDA ARDY DWIASTUTI; WIYANTI WIYANTI; I WAYAN DIARA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.10, No.3, Juli 2021
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

Application of Geographic Information Systems and Remote Sensing for The Study of Landslide Potential and Susceptibility in Tukad Buleleng Watershed, Buleleng Regency Landslides are a ground movement event that descends the slopes and is almost found in every major watershed upstream, due to steep topography and high rainfall. Tukad Buleleng watershed is one of the watersheds with a stretch of rolling land and hills so that it has the potential for landslides. This experiment was been conducted from January to Agust 2020. The aims off this research were to find out the potential lanslide and the level susceptibility to landslide. The method used to determine the potential for landslides was a scoring method referring to PSBA UGM (2001) by overlapping the parameters of the causes of landslides were rainfall, slope, land use, soil types, structural of geology, and landforms maps. Landslide-prone areas were obtained by overlapping landslide potential map, road network map and residential area map. The results showed that the potential landslide in Tukad Buleleng watershed had many categories from not potentially up to high potential. The area had no potential of landslide were widespread in the downstream watershed covering an area of 1,733.94 ha 51.61%, low potential category of 165.08 ha 4,91%, the medium potential category of 77.24 ha 2,32%, and high potential category spread over the upstream part of the watershed of 1,382.87 ha 41,16%. The distribution of susceptibility was seen from administrative boundaries, Sukasada administration area that covered Wanagiri, Pegayaman, Gitgit, and Padangbulia villages.
Analisis Daya Dukung Air Untuk Kebutuhan Air Bersih Domestik di Kecamatan Gianyar dan Ubud, Kabupaten Gianyar DEBORA TIENCICIA NAPITU; WIYANTI WIYANTI; I WAYAN DIARA
Jurnal Agroekoteknologi Tropika (Journal of Tropical Agroecotechnology) Vol.7, No.2, April 2018
Publisher : Program Studi Agroekoteknologi, Fakultas Pertanian, Universitas Udayana

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Abstract

Analysis of Water Carrying Capacity For Domestic Clean Water Needs in Gianyar and Ubud District of Gianyar Regency Water is the main needs used sustainably. The needs of water always increases in line with the growth of the human population. The increase of water needs for domestic compels a region to maintain the availability of water in order to support the clean water needs. The aim of this study was to found out the water carrying capacity to fulfill the need of clean water of domestic in Gianyar and Ubud sub-districts, Gianyar regency. The research was done using descriptive quantitative method and to determine the number of respondent using stratified random sampling method. The water needs for domestic in Gianyar sub-district is 2,671,391.2 m3year-1 and the potency of water availability was calculated based on the surface water is 513,232.9193 m3year-1; groundwater recharge is 653,205.5337 m3 year-1; and the groundwater basin is 22,000,000.16 m3 year-1. The water needs for domestic in Ubud sub-district is 2,111,598 m3 year-1 and the potency of water availability was calculated based on the surface water is 476,395.4871 m3 year-1; groundwater recharge is 582,261.1509 m3 year-1; and the groundwater basin is 18,000,000.99 m3 year-1.Carrying capacity index of surface water in Gianyar sub-district is 0.19; groundwater recharge is 0.24 and the groundwater basin is 8.23. Carrying capacity index of surface water in Ubud sub-district is 0.22; groundwater recharge is 0.27; and the groundwater basin is 8.52. Based on the analysis, it was found that the status of surface water and groundwater recharge carrying capacity in Gianyar and Ubud sub-district was deficit (water supply < water demand), however carrying capacity of groundwater basin was surplus (water supply > water demand).
Pemberian Cocopeat dan Pupuk Phonska untuk Budidaya Tanaman Ubi Jalar (Ipomoea batatas) pada Pasir Pantai Kusamba, Dawan, Klungkung WIYANTI WIYANTI; TATIEK KUSMAWATI
Agrotrop : Journal on Agriculture Science Vol 8 No 1 (2018)
Publisher : Fakultas Pertanian Universitas Udayana

Show Abstract | Download Original | Original Source | Check in Google Scholar | Full PDF (166.136 KB) | DOI: 10.24843/AJoAS.2018.v08.i01.p09

Abstract

Giving Cocopeat Compost and Phonska Fertilizer for Cultivation of Sweet Potato on Sandy Soil of Kusamba Beach, Dawan Sub District, Klungkung Regency. The purpose of the study were to know the effect of cocopeat compost and Phonska fertilizer in the physical and chemical properties, growth and production of sweet potato. The study was conducted at Green house of Agriculture Faculty Udayana University in pot experiment using the basic design of block randomized design. The treatment tested were cocopeat compost (K) at a dose of 10% (K1); 20% (K2); 30% (K3); and 40% (K4) of the weight of sand soil; and Phonska fertilizer (P) at a dose of 200 kg ha-1 (P1), and 400 kg ha-1 (P2). Each treatment was repeated 3 times. The results of the study showed that the treatment of cocopeat give the highest of total N, available P, available K, organic matter, weight of crop and tuber respectively on P4 treatment i.e. 0.06%; 414.27 ppm; 1079.59 ppm; 3.12%; 204.33 grams; and 58.74 grams, and the smallest one was in treatment of K1, i.e. 0.01%; 204.80 ppm; 577.23 ppm, 0.62%; 108.47 grams; and 11.78 grams, while the highest of Electric conductivity, pH, Bulk Density and permeability were occured by K1 amounted to 2.48 mmhos cm-1; 8,4; 1.09 grams cm-3 and 151.26 cm/hour; and the lowest was in K4 treatment i.e. 0.75 mmhos cm-1; 7.3 and 1.09 g cm-3. In the treatment of phonska the highest of total N, available P, available K, crop weight achieved by treatment of P2 i.e. 0.04%; 62.96 ppm; 788.61 ppm; 167.27 grams; and 32.35 grams, and the lowest was in the treatment of P1 i.e. 0.02%; 53.06 ppm; 709.48 ppm; 24.62 grams; and 24.62 grams.
PREDIKSI EROSI DAN PERENCANAAN KONSERVASI TANAH PADA DAERAH ALIRAN SUNGAI JANGA KABUPATEN KARANGASEM, BALI Julianus Jeksen; Wayan Diara; Wiyanti Wiyanti
AGRICA Vol. 1 No. 1 (2008): June
Publisher : Agriculture Faculty of Flores University

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.37478/agr.v1i1.476

Abstract

Erosion prediction on Janga flow river area at Karangasem district used USLE ( Universal Soil Loss Equation ). This research conducted to know the large erosion on Janga flow river area and conservation treatment on unit larger erosion area of permitted erosion to concern on the class of ability area. Based on slope map compilation, used area map and soil variety map on research area was founded L6 unit area. The large erosion predicts on Janga flow river area between 0,829 to 1.109,208 ton/ha/th. Low erosion in area unit 1,3,5,6,7, and 9 located on downstream of the flow river area. Be on the process of erosion on area unit 11 and 13 located on mid-flow river area. High erosion in area unit 14 and 16 located on upper reaches flow river area. Lowest erosion found in area unit 1,3,5,6,7,9,11 and larger erosion of permitted erosion located in area unit 10,13,14,15,and 16 need to soil conservation treatment. Applicable Soil conservation treatment is increasing the density of crops and improve terrace construction and by added used organic substance and cultivation crop
ANALISIS SPASIAL POTENSI RESAPAN AIR UNTUK MENDUKUNG PENGELOLAAN DAERAH ALIRAN SUNGAI (DAS) UNDA PROVINSI BALI (Spatial Analysis of Water Infiltration Potential to Support The Management of Unda Watershed in Bali Province) W Wiyanti; Ketut Dharma Susila; R Suyarto; Moh Saifulloh
Jurnal Penelitian Pengelolaan Daerah Aliran Sungai (Journal of Watershed Management Research) Vol 6, No 2 (2022): Jurnal Penelitian Pengelolaan Daerah Aliran Sungai (Journal of Watershed Managem
Publisher : Center for Implementation of Standards for Environmental and Forestry Instruments Solo

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20886/jppdas.2022.6.2.111-124

Abstract

ABSTRAKDaerah Aliran Sungai (DAS) Unda masuk dalam kategori DAS prioritas, yang sebagian wilayahnya termasuk kategori lahan kritis. Kondisi penutupan lahan dengan dominasi kerapatan vegetasi rendah berimplikasi terhadap rendahnya kapasitas infiltrasi dan resapan air, sehingga berpotensi memperbesar aliran permukaan. Penelitian ini bertujuan mengidentifikasi potensi resapan air sebagai dasar perencanaan kegiatan pengelolaan DAS. Metode yang digunakan dalam penelitian ini adalah metode skoring dengan 4 parameter, yaitu jenis tanah, penggunaan lahan, kemiringan lereng, dan curah hujan. Analisis data spasial dilakukan dengan menggunakan perangkat Sistem Informasi Geografis (SIG). Perumusan rekomendasi kegiatan pengelolaan DAS dilakukan secara deskriptif, berdasarkan hasil analisis potensi resapan air. Hasil penelitian menunjukkan kondisi resapan air di daerah penelitian tergolong baik (22,54%), sangat kritis (18,20%), normal (17,92%), dan agak kritis (7,99%). Kegiatan pengelolaan DAS yang direkomendasikan yaitu reboisasi secara periodik, pembuatan teras bangku/teras tradisional, pembuatan sumur resapan/lubang biopori pada daerah pemukiman serta integrasi peran kelembagaan DAS dari hulu sampai hilir secara sinergisKata kunci: Daerah Aliran Sungai (DAS), daerah resapan air, potensi resapan air,  DAS Unda, Sistem Informasi Geografis (SIG) ABSTRACTThe Unda Watershed is categorized as the priority watershed, which part of its area is degraded land. The condition of land cover with the dominance of low-density vegetation has implications for low infiltration and water absorption capacity, so that it has the potential to  increase surface runoff. This study aims to identify the potential for water absorption as the basis for watershed management planning. The method used in this study is scoring with four parameters, namely soil type, land use, slope, and rainfall. Spatial data analysis uses Geographic Information System (GIS). The formulation of recommendations for watershed management activities is carried out descriptively, based on the findings of the analysis of water absorption potential. The results showed that the water recharge conditions in the study area were classified as good (22.54%), very critical (18.20%), normal (17.92%), and less critical (7.99%). The recommended watershed management is periodic reforestation, construction of bench/traditional terraces, construction of infiltration wells/biopori holes in the residential areas, and synergistic integration of the roles of watershed institutions from upstream to downstream.Key words: watersheds, water catchment areas, water infiltration potential, Geographic Information System (GIS), Unda watershed
Co-Authors AGUS FRENCA ADI PUTRA ANGGIA WIDYA FATAHILLAH DEBORA TIENCICIA NAPITU DICKY ARDIYAN NUGROHO PUTRA FIRDA ARFIANA I MADE ADI SURYADI I Nyoman Dibia I NYOMAN MERIT I NYOMAN SUNARTA I Wayan Diara I WAYAN NARKA INDAYATI LANYA Jeksen, Julianus Ketut Dharma Susila Made Antara Moh Saifulloh NI KOMANG HARI PADMAYANI NI LUH AYU DANA LESTARI NI MADE DWI PRADNYASARI NI MADE TRIGUNASIH Ni Nengah Soniari PUTU SINTAYANI BUANA R. Suyarto RIO PUTRA NUSANTARA PARDEDE TATIEK KUSMAWATI WINDA ARDY DWIASTUTI Yoga Yuniadi