Agrociencia-Uruguay最新文献_第7页

Marine deposits of the Chuy Formation (Late Pleistocene) and isostatic readjustments in the area of Laguna de Rocha (Uruguay) 乌拉圭拉古纳德罗查地区Chuy组海相沉积(晚更新世)与均衡调整

Agrociencia-Uruguay Pub Date : 2022-05-27 DOI: 10.31285/agro.26.799

Eduardo Castiglioni, C. Gaucher, G. Perillo, A. Sial

{"title":"Marine deposits of the Chuy Formation (Late Pleistocene) and isostatic readjustments in the area of Laguna de Rocha (Uruguay)","authors":"Eduardo Castiglioni, C. Gaucher, G. Perillo, A. Sial","doi":"10.31285/agro.26.799","DOIUrl":"https://doi.org/10.31285/agro.26.799","url":null,"abstract":"The Chuy Formation is characterized by up to 135 m of an alternation of green pelites and fine to coarse sandstones with sparse invertebrate fossils. The marine deposits are interbedded with continental, loessic deposits of the Libertad Formation and overlain by the Dolores Formation, made up of mudstones with calcareous concretions. The results of the radiocarbon dating showed calibrated ages of 13.9±0.2, 41.5±1.9 and 50±3 ka BP on bioclasts of marine fossils at an elevation (above sea level, asl) of -2.8, -6.13 and -8 m respectively. Such ages and elevations are in disagreement with the sea-level evolution inferred for the Late Pleistocene. Two possible explanations are: (a) the ages represent minimum ages and deposition took place during the last interglacial at 115-130 ka (Marine Isotope Stage MIS 5e), or (b) they represent depositional ages but the area experimented large isostatic readjustments during and after the last glaciation. Several lines of evidence suggest a Late Pleistocene age for the upper Chuy Formation, including the d18O curve obtained from invertebrate shells, which shows large secular variations consistent with MIS 1 to 7. The proposed scenario envisages significant subsidence between 50-20 ka due to the far-field effects of glacial load in the Andes/Patagonia. At 20 ka the eustatic regression outpaced subsidence, leading to continentalization of the Laguna de Rocha area. Marine conditions returned at 15 ka and into the Holocene, except for continental deposits (Dolores Formation) at ca. 11-10 ka (Younger Dryas). An uplift of 115 m took place between 15 and 9 ka in the area, which is interpreted as post-glacial rebound. In the Holocene, moderate subsidence was further recorded. A regional trend is observed, with uplift of marine deposits increasing towards the W-SW, which is consistent with an explanation as post-glacial isostatic rebound.","PeriodicalId":43474,"journal":{"name":"Agrociencia-Uruguay","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89387547","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}

引用次数: 0

Baseline of the outcropping Guarani Aquifer System in Rivera and Tacuarembó, Uruguay: Piezometry and Vulnerability 乌拉圭里维拉和Tacuarembó露头瓜拉尼含水层系统基线:压力测量和脆弱性

Agrociencia-Uruguay Pub Date : 2022-05-27 DOI: 10.31285/agro.26.507

Paula Collazo

{"title":"Baseline of the outcropping Guarani Aquifer System in Rivera and Tacuarembó, Uruguay: Piezometry and Vulnerability","authors":"Paula Collazo","doi":"10.31285/agro.26.507","DOIUrl":"https://doi.org/10.31285/agro.26.507","url":null,"abstract":"The piezometric, water table and vulnerability baseline of the outcropping Guaraní Aquifer System (GAS) in the departments of Rivera and Tacuarembó (Uruguay) is presented. The flow network and chemical composition are essential to understanding underground dynamics and identifying recharge and discharge zones, preferential flow directions, and determining hydraulic gradients. It is essential to analyze its evolution in time and space from the baseline, for the management and protection of the resource. Vulnerability was determined by applying the GOD and EKv methods, obtaining similar results, with areas of high and moderate vulnerability in most of the studied area. The risk of groundwater contamination was determined using the method of Foster & Hirata(34), obtaining high risk for potentially polluting loads from lack of sanitation, solid household waste, irregular settlements, and gas stations, in areas of moderate and high vulnerability. Industrial and mining activity and a cemetery represent a moderate risk in most cases. Having maps of vulnerability and risk of groundwater contamination is essential to identify the most vulnerable areas and implement detailed study, control, and protection tools aimed at conserving and mitigating impacts on GAS.","PeriodicalId":43474,"journal":{"name":"Agrociencia-Uruguay","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87767892","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}

引用次数: 0

Basalts of the Arapey Group and their potential use as a source of agrominerals (stonemeal) Arapey群的玄武岩及其作为农用矿物(石料)来源的潜在用途

Agrociencia-Uruguay Pub Date : 2022-05-27 DOI: 10.31285/agro.26.505

Leticia Chiglino, Johana Ballestero, A. Celio, Verónica Perdomo, Andrea Borca

{"title":"Basalts of the Arapey Group and their potential use as a source of agrominerals (stonemeal)","authors":"Leticia Chiglino, Johana Ballestero, A. Celio, Verónica Perdomo, Andrea Borca","doi":"10.31285/agro.26.505","DOIUrl":"https://doi.org/10.31285/agro.26.505","url":null,"abstract":"The technique known as rochagem, stonemeal or rocks of crops consists of the addition of rock dust to increase the fertility conditions of the soil. In this paper, preliminary geochemical studies of the basalts of Los Catalanes Formation (Grupo Arapey) of three slag heaps are presented as a result of the disposal of mining activity in the Department of Artigas, and compared with successful use experiences of lithologies correlative to the region, specifically in the basalts of the Serra Geral Formation in the southern part of Brazil. The results obtained show SiO2, Al2O3 and Fe2O3 as the principal oxides, and in a smaller proportion, they are followed by CaO, MgO Na2O, TiO2, K2O and P2O5. The most noticeable differences are in the content of minor and trace elements such as Mn, Cr, As, Cd, Ba, Sr, V, Pb, Ti, Zn and Zr, possibly due to geochemical differences between streams. This study should be addressed in more detail in future works. In addition, the potential use of Los Catalanes Formation as an agromineral source and the development of the stonemeal technique in Uruguay are discussed. The possibility of using alternative inputs brings two productive activities, such as mining and agriculture, into dialogue, contributing to the sustainable development thereof.","PeriodicalId":43474,"journal":{"name":"Agrociencia-Uruguay","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82504178","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}

引用次数: 1

Verificación de exploración radicular profunda de Eucalyptus grandis hasta rocas sedimentarias pérmicas del noreste uruguayo 乌拉圭东北部大桉树至二叠纪沉积岩深层根勘探的验证

Agrociencia-Uruguay Pub Date : 2022-05-27 DOI: 10.31285/agro.26.508

Sebastián Mármol, Luis Bentancor, M. Francia, A. Hirigoyen, Mario Pérez Bidegain, G. Blanco, Martín Marcelo Pérez

{"title":"Verificación de exploración radicular profunda de Eucalyptus grandis hasta rocas sedimentarias pérmicas del noreste uruguayo","authors":"Sebastián Mármol, Luis Bentancor, M. Francia, A. Hirigoyen, Mario Pérez Bidegain, G. Blanco, Martín Marcelo Pérez","doi":"10.31285/agro.26.508","DOIUrl":"https://doi.org/10.31285/agro.26.508","url":null,"abstract":"Estudios han demostrado que las plantaciones de Eucalyptus spp. desarrollan un rápido y profundo sistema radicular, alcanzando relaciones casi simétricas con la parte aérea de los árboles. En el presente trabajo se relevó información preliminar sobre el desarrollo radicular profundo de E. grandis y su interacción con suelos, saprolitos y rocas en el noroeste de Uruguay. Partiendo de una base geológica, se realizaron tres calicatas profundas, que se clasificaron según una nueva propuesta de saprolitos. Se realizaron análisis químicos y físicos de los perfiles, descripciones macroscópicas de las raíces in situ y observaciones microscópicas (lupa, microscopia electrónica y cortes anatómicos) de raíces, saprolitos y rocas. El desarrollo radicular profundo fue corroborado, mostrando variadas y adaptadas raíces que alcanzan hasta las rocas, observándose indicios de comportamientos radiculares diferentes según las diferentes partes del perfil (suelo, saprolita o roca). Finalmente se discute cómo enfocar el estudio a futuro del sistema radicular profundo de E. grandis., la caracterización del saprolito y la roca en función de este cultivo, y los posibles efectos en el manejo productivo y en el ambiente.","PeriodicalId":43474,"journal":{"name":"Agrociencia-Uruguay","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-05-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89582707","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}

引用次数: 0

Número especial en homenaje al Prof. Jorge Bossi (1934-2020)

Agrociencia-Uruguay Pub Date : 2022-05-27 DOI: 10.31285/agro.26.1057

Mario Pérez-Bidegain, Antonella Celio, C. Gaucher

引用次数: 0

Guaraní Aquifer System sedimentary petrography of outcropping formations and hydrogeologic implications Guaraní含水层系统露头地层沉积岩石学及水文地质意义

Agrociencia-Uruguay Pub Date : 2022-05-27 DOI: 10.31285/agro.26.506

Paula Collazo, Karina Pamoukaglhian, Leticia Chiglino

引用次数: 0

Consumer perception of purple-fleshed sweet potatoes hedonic, sensory, and emotional expectations 消费者对紫肉红薯的享乐、感官和情感期望

Agrociencia-Uruguay Pub Date : 2022-05-05 DOI: 10.31285/agro.26.990

J. Lado, E. Vicente, Gustavo Rodríguez, G. Ares

引用次数: 0

Storage temperatures for Bowdichia virgilioides seeds an endangered species 濒危物种黄包菜种子的贮藏温度

Agrociencia-Uruguay Pub Date : 2022-03-03 DOI: 10.31285/agro.26.678

Esteves, S. Filho

引用次数: 0

High performance of growing lambs grazing Paspalum notatum INIA Sepé with energy-protein supplement including sorghum-DDGS 饲用含高粱- ddgs的能量蛋白补充雀稗提高生长羔羊生产性能

Agrociencia-Uruguay Pub Date : 2022-03-03 DOI: 10.31285/agro.26.549

Tafernaberry, Van Lier, R. Reyno, De Barbieri

{"title":"High performance of growing lambs grazing Paspalum notatum INIA Sepé with energy-protein supplement including sorghum-DDGS","authors":"Tafernaberry, Van Lier, R. Reyno, De Barbieri","doi":"10.31285/agro.26.549","DOIUrl":"https://doi.org/10.31285/agro.26.549","url":null,"abstract":"Sorghum dried distillers’ grain with soluble (S-DDGS) has not been utilized as supplement in lamb growing and finishing diets under grazing conditions in summer. The hypothesis was that the performance of post-weaning lambs grazing Paspalum notatum (PN) INIA Sepé supplemented with an energy-protein diet (whole sorghum grain [SG], and soybean meal [SM]) is not reduced by the inclusion of 40% S-DDGS. During 82 days, in summer, 42 Merino Dohne male lambs (130 ± 7.6 days of age, 32 ± 2.4 kg of body weight [BW], and 2.2 ± 0.2 body condition score [BCS]) were evaluated, in a completely random experimental design with three treatments and two replicates each (n = 14 each one). All lambs grazed PN INIA Sepé and in two treatments they were daily supplemented (1.7% BW) with different components. The treatments were: PN (control group, no supplementation), SGSM (70% SG, 30% SM) and DDGS (45% SG, 40% S-DDGS, and 15% SM). Supplemented lambs had higher (P<0.0001) body weight gain (BWG), final BW and wool growth (140 and 126 g/a/d, 43.5 and 42.4 kg; 1814 and 1892 μg/cm2/d for DDGS and SGSM, respectively) than control lambs (40 g/a/d; 35.5 kg; 1353 μg/cm2/d) (P<0.0001), without differences between supplemented groups. Gastrointestinal nematodes infestation (GIN) was affected by the treatments on day 69, where supplemented animals showed lower infestation levels than control lambs (P=0.0024). The inclusion of S-DDGS in the supplement did not reduce the productive performance of the lambs when the concentration of crude protein and energy remained constant.","PeriodicalId":43474,"journal":{"name":"Agrociencia-Uruguay","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2022-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87023595","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}

引用次数: 0

Soil sampling depth and phosphorus extraction method for phosphorus in leguminous pastures 豆科牧草土壤取样深度及磷提取方法

Agrociencia-Uruguay Pub Date : 2022-03-03 DOI: 10.31285/agro.26.954

引用次数: 1