{"title":"Identifikasi Potensi Longsor Berbasis Sistem Informasi Geografis di Kecamatan Sembalun Kabupaten Lombok Timur","authors":"Baiq Tria Maulidasih, Bustan Bustan, S. Sukartono","doi":"10.29303/jsqm.v1i1.13","DOIUrl":"https://doi.org/10.29303/jsqm.v1i1.13","url":null,"abstract":"This study aims to assess and map the spatial potential of landslides based on a geographic information system in Sembalun District. Field surveys were carried out from May to July 2020 on a land area of 18,318.45 Ha. Field observations include land characteristics, climatic characteristics (rainfall), soil properties in various types of land use. (shrubs, plantations, open land, dry land agriculture, residential and industrial areas, primary and secondary dryland forest. Soil sampling at a depth of 0-15 cm is carried out in a composite manner at 16 sampling points to determine soil properties, namely permeability, texture, structure and status of soil organic matter Data processing (slope, rainfall, geology, land use and erodibility) for the mapping process in the form ofshapefileand generate landslide prone maps from the overlay process. Landslide potential estimation using the method specified by Directorate of Volcanology and Geological Disaster Mitigation/DVMBG (2004). Score = (30% x rainfall class factor) + (20% x geology) + (20% x Erodibility class factor) + (15% x land use) + (15% x slope class factor). The results showed that around 32% (5,901.53 Ha) of the area of Sembalun Subdistrict were in a high vulnerability status to landslide potential, 49% (8,911.39 Ha) were at moderate vulnerability status and 19% (3,505.71 Ha) had low vulnerability. The variables of erodibility and slope are the variables that show the most significant contribution to the potential for landslides in the area.","PeriodicalId":424353,"journal":{"name":"Journal of Soil Quality and Management","volume":"244 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133841015","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Putu Putriyani Megantari, Ni Wyn Dwiani Dulur, I. P. Silawibawa
{"title":"Pengaruh Berbagai Takaran Pupuk Organik Cair Limbah Tahu dan Urea terhadap Nodulasi, Serapan N, dan Pertumbuhan Tanaman Kacang Tanah (Arachis hypogaea L.)","authors":"Putu Putriyani Megantari, Ni Wyn Dwiani Dulur, I. P. Silawibawa","doi":"10.29303/jsqm.v1i1.12","DOIUrl":"https://doi.org/10.29303/jsqm.v1i1.12","url":null,"abstract":"The purpose of this study was to determine the effect of giving various doses of liquid organic fertilizer of tofu (POC) and urea on nodulation, N uptake and growth of Peanut plants (Arachis hypogaea L.) in the maximum vegetative phase of the plant. The research method used an experimental method with seven treatments. Each treatment had 3 replications so it consisted of 21 experimental units. The research was conducted April-August 2020 in Dasan Tebu Village, Ombe Baru Village, Kediri District, West Lombok Regency. The treatments used were P0 (without treatment), P1 (50 kg Urea / ha + 10,000 l POC / ha), P2 (50 kg Urea / ha + 15,000 l POC / ha), P3 (50 kg Urea / ha + 20,000 l POC / ha), P4 (100 kg Urea / ha + 10,000 l POC / ha), P5 (100 kg Urea / ha + 15,000 l POC / ha), P6 (100 kg Urea / ha + 20,000 l POC / ha). The parameters tested in this research is the growth of peanut, the total amount root nodules, the wet stover weight of root nodules, the N content of tissue, the plant's wet stover, the plant's dry stover, the N uptake of plants, soil pH and N-available soil. The treatment did not affect the number of nodules, N uptake, plant height, plant wet stover weight and available N-NO3-. However, it has an effect on root nodule wet stover weight, nitrogen on tissue plant, plant dry stover, soil pH, and available N-NH4+.","PeriodicalId":424353,"journal":{"name":"Journal of Soil Quality and Management","volume":"93 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115638468","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}