Pub Date : 2022-01-01DOI: 10.29327/siacs2021.436384
Heverton Fernando Melo, Victor Alexandre Caetano Pinto, Fabrício Tondello Barbosa
{"title":"RESISTÊNCIA À PENETRAÇÃO DE UM LATOSSOLO SUBMETIDO A DIFERENTES SISTEMAS DE MANEJO","authors":"Heverton Fernando Melo, Victor Alexandre Caetano Pinto, Fabrício Tondello Barbosa","doi":"10.29327/siacs2021.436384","DOIUrl":"https://doi.org/10.29327/siacs2021.436384","url":null,"abstract":"","PeriodicalId":21215,"journal":{"name":"Revista Brasileira De Ciencia Do Solo","volume":"13 ","pages":""},"PeriodicalIF":1.7,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72544090","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.29327/siacs2021.403148
Victor Gabriel Finkler, Grazielle Schornobai, Dion Cristóvão Orlonski, Lucas Polli Glugoski, Vanderson Modolon Duart, Eduardo Fávero Caires
{"title":"PRODUTIVIDADE DE SOJA INFUENCIADA PELO MANEJO DA ADUBAÇÃO FOSFATADA EM UMA SUCESSÃO TRIGO-SOJA NO SISTEMA PLANTIO DIRETO","authors":"Victor Gabriel Finkler, Grazielle Schornobai, Dion Cristóvão Orlonski, Lucas Polli Glugoski, Vanderson Modolon Duart, Eduardo Fávero Caires","doi":"10.29327/siacs2021.403148","DOIUrl":"https://doi.org/10.29327/siacs2021.403148","url":null,"abstract":"","PeriodicalId":21215,"journal":{"name":"Revista Brasileira De Ciencia Do Solo","volume":"89 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85960008","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.29327/siacs2021.409512
Ricardo de Castro Dias, João Augusto Dourado Loiola, Paulo César Teixeira, Everaldo Zonta FAPERJ
{"title":"AVALIAÇÃO DA LIBERAÇÃO DE METAIS ALCALINOS DE ROCHAS SILICÁTICAS EM FUNÇÃO DO TEMPO E DA METODOLOGIA","authors":"Ricardo de Castro Dias, João Augusto Dourado Loiola, Paulo César Teixeira, Everaldo Zonta FAPERJ","doi":"10.29327/siacs2021.409512","DOIUrl":"https://doi.org/10.29327/siacs2021.409512","url":null,"abstract":"","PeriodicalId":21215,"journal":{"name":"Revista Brasileira De Ciencia Do Solo","volume":"23 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81569392","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.36783/18069657rbcs20210138
L. Pires, L. V. Prandel, S. Saab, A. Brinatti
: Use of soil in forensic science is related to its several chemical, physical, and biological properties associated with its capacity to adhere to different materials and surfaces. Forensic soil experts and police investigators have been using soil samples as an aid in criminal investigations. Soils can act as fingerprints because they present contrasting physical, chemical, biological, and mineralogical properties. However, depending on the analytical tools utilized to characterize the soil, differentiating the samples when they have similar properties might be impossible. Thus, soil utilization as a fingerprint material requires increasing the number of variables measured as well as the accuracy and precision of the measurements. This study presents the feasibility of methods based on X-ray fluorescence (XRF) and radiation interaction parameters to discriminate soils for forensic investigations. Analyses of soil particle size, elemental composition (XRF), mass attenuation coefficient (μ), atomic (σ a ) and electronic (σ e ) cross-sections, effective atomic number (Z eff ), and electron density (N el ) were carried out to evaluate the potential of nuclear parameters to differentiate soils. Ten different soil types collected at 0.00-0.05 m layer were studied. The radiation interaction parameters were obtained through the XCOM computer code, while the experimental measurements were carried out by the traditional gamma-ray attenuation method utilizing the radioactive sources of 241 Am and 137 Cs. The results showed that the soils presented broad differences in terms of clay, silt, and sand contents as well as in the major oxides. These differences influenced the radiation attenuation properties as verified through the multivariate analysis. For the lowest photon energy studied (10 and 30 keV), σ e was the most interesting parameter to discriminate the soils. For energies above 59.5 keV, Z eff and N el were the most important parameters. Good agreement was found between the calculated and measured parameters. The findings of this study indicate that radiation interaction parameters have great potential for crime scene investigation providing new parameters for better discrimination of soils. The main advantage of the method presented here is that it is fast, easy to implement, does not require powerful computers, and the XCOM code can be run online at the NIST (National Institute of Standards and Technology, USA) website.
{"title":"A novel approach based on X-ray fluorescence and photon attenuation to the analysis of soils for forensic investigation","authors":"L. Pires, L. V. Prandel, S. Saab, A. Brinatti","doi":"10.36783/18069657rbcs20210138","DOIUrl":"https://doi.org/10.36783/18069657rbcs20210138","url":null,"abstract":": Use of soil in forensic science is related to its several chemical, physical, and biological properties associated with its capacity to adhere to different materials and surfaces. Forensic soil experts and police investigators have been using soil samples as an aid in criminal investigations. Soils can act as fingerprints because they present contrasting physical, chemical, biological, and mineralogical properties. However, depending on the analytical tools utilized to characterize the soil, differentiating the samples when they have similar properties might be impossible. Thus, soil utilization as a fingerprint material requires increasing the number of variables measured as well as the accuracy and precision of the measurements. This study presents the feasibility of methods based on X-ray fluorescence (XRF) and radiation interaction parameters to discriminate soils for forensic investigations. Analyses of soil particle size, elemental composition (XRF), mass attenuation coefficient (μ), atomic (σ a ) and electronic (σ e ) cross-sections, effective atomic number (Z eff ), and electron density (N el ) were carried out to evaluate the potential of nuclear parameters to differentiate soils. Ten different soil types collected at 0.00-0.05 m layer were studied. The radiation interaction parameters were obtained through the XCOM computer code, while the experimental measurements were carried out by the traditional gamma-ray attenuation method utilizing the radioactive sources of 241 Am and 137 Cs. The results showed that the soils presented broad differences in terms of clay, silt, and sand contents as well as in the major oxides. These differences influenced the radiation attenuation properties as verified through the multivariate analysis. For the lowest photon energy studied (10 and 30 keV), σ e was the most interesting parameter to discriminate the soils. For energies above 59.5 keV, Z eff and N el were the most important parameters. Good agreement was found between the calculated and measured parameters. The findings of this study indicate that radiation interaction parameters have great potential for crime scene investigation providing new parameters for better discrimination of soils. The main advantage of the method presented here is that it is fast, easy to implement, does not require powerful computers, and the XCOM code can be run online at the NIST (National Institute of Standards and Technology, USA) website.","PeriodicalId":21215,"journal":{"name":"Revista Brasileira De Ciencia Do Solo","volume":"1 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69743888","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.36783/18069657rbcs20210146
Carla Gomes de Albuquerque, Fabiana Gavelaki, V. Melo, A. V. Motta, A. Zarbin, C. M. Ferreira
: Phosphorus availability in soils is low due to its strong retention by inner-sphere complexation on minerals in the clay fraction with pH-dependent charges, such as goethite. On the other hand, sulfur has greater availability because it is retained mainly by electrostatic attraction. We evaluated the intensities of the inner-sphere complexation of orthophosphate and sulfate (H 2 PO 4- /HPO 42- and SO 42- - generically treated as PO 4 and SO 4 ) under different experimental conditions (pH, goethite purity, and contact times) on synthetic goethite samples to establish the mechanisms and models involved in those bonds. Inner-sphere PO 4 and SO 4 were extracted using both HNO 3 1 mol L -1 and USEPA 3051A methods. Inner-sphere complexation of PO 4 and SO 4 was highest at pH 5 in relation to pH 9. Attenuated total reflectance/Fourier transform infrared spectroscopy (ATR-FTIR) spectra showed inner-sphere complexation bands of PO 4 on goethite in the protonated binuclear bidentate (pH 5) and deprotonated binuclear bidentate (pH 9) forms. Inner-sphere complexation of PO 4 was much more expressive than that of SO 4 . Phosphorus and sulfur oxyanions displace the diprotonated ferrol ligand (-OH 2+0.5 in -FeOH 2+0.5 ), while the -OH -0.5 in the -Fe-OH -0.5 group are only displaced by PO 4 . The -O -1.5 ligand in Fe-O -1.5 group is not displaced by PO 4 or SO 4 . The high surface negative charge density of PO 4 defined its higher activation energy for exchanging -OH 2+0.5 and -OH -0.5 on the goethite surface in relation to SO 4 . The proposed model can be used to reduce inner sphere phosphate adsorption in soils and improve P fertilization efficiency for farming.
{"title":"Model of inner-sphere adsorption of oxyanions in goethite - Why is phosphate adsorption more significant than that of sulfate?","authors":"Carla Gomes de Albuquerque, Fabiana Gavelaki, V. Melo, A. V. Motta, A. Zarbin, C. M. Ferreira","doi":"10.36783/18069657rbcs20210146","DOIUrl":"https://doi.org/10.36783/18069657rbcs20210146","url":null,"abstract":": Phosphorus availability in soils is low due to its strong retention by inner-sphere complexation on minerals in the clay fraction with pH-dependent charges, such as goethite. On the other hand, sulfur has greater availability because it is retained mainly by electrostatic attraction. We evaluated the intensities of the inner-sphere complexation of orthophosphate and sulfate (H 2 PO 4- /HPO 42- and SO 42- - generically treated as PO 4 and SO 4 ) under different experimental conditions (pH, goethite purity, and contact times) on synthetic goethite samples to establish the mechanisms and models involved in those bonds. Inner-sphere PO 4 and SO 4 were extracted using both HNO 3 1 mol L -1 and USEPA 3051A methods. Inner-sphere complexation of PO 4 and SO 4 was highest at pH 5 in relation to pH 9. Attenuated total reflectance/Fourier transform infrared spectroscopy (ATR-FTIR) spectra showed inner-sphere complexation bands of PO 4 on goethite in the protonated binuclear bidentate (pH 5) and deprotonated binuclear bidentate (pH 9) forms. Inner-sphere complexation of PO 4 was much more expressive than that of SO 4 . Phosphorus and sulfur oxyanions displace the diprotonated ferrol ligand (-OH 2+0.5 in -FeOH 2+0.5 ), while the -OH -0.5 in the -Fe-OH -0.5 group are only displaced by PO 4 . The -O -1.5 ligand in Fe-O -1.5 group is not displaced by PO 4 or SO 4 . The high surface negative charge density of PO 4 defined its higher activation energy for exchanging -OH 2+0.5 and -OH -0.5 on the goethite surface in relation to SO 4 . The proposed model can be used to reduce inner sphere phosphate adsorption in soils and improve P fertilization efficiency for farming.","PeriodicalId":21215,"journal":{"name":"Revista Brasileira De Ciencia Do Solo","volume":"1 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69744157","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.36783/18069657rbcs20220010
Abelino Anacleto de Souza, G. L. Mumbach, Édila Almeida, Douglas Luiz Grando, L. Gatiboni, G. Brunetto, P. Ernani
: Soils with low potassium (K) availability require corrective fertilization for grain crops. The recommended rate to increase K availability up to the critical level depends on the soil K buffering capacity (KBC). This study aimed to quantify the KBC and recalculate the rates necessary to reach the K critical level in 23 soils from Southern Brazil. Soil samples were incubated with six K rates, that were thus grouped according to CEC pH7.0 : below 7.5 cmol c dm -3 (0, 30, 60, 90, 120 and 180 kg K 2 O ha -1 ); from 7.6 to 15 cmol c dm -3 (0, 30, 60, 120, 180 and 240 kg K 2 O ha -1 ) and from 15.1 to 30 cmol c dm -3 (0, 30, 60, 120, 240 and 360 kg K 2 O ha -1 ). The soil test K (STK) was extracted by Mehlich-1 and the fertilizer rates necessary to increase the STK by 1 mg dm -3 were quantified. The KBC values were correlated with a suite of soil testing metrics. The relationship between the cation exchange capacity (CEC pH7.0 ) and KBC was modeled, and a linear-plateau equation presented the best fit. The K rates were calculated using the following equation: K rate = (Critical Level - STK) × KBC and were compared with the current rate indicated by the Local Soil Fertility Committee. The K fertilizer rates by KBC were about 2.5 times higher than the values currently indicated, and the largest differences were observed in soils with low STK and high CEC pH7.0 .
钾肥利用率低的土壤需要对粮食作物进行校正施肥。将钾有效度提高到临界水平的建议速率取决于土壤钾缓冲能力(KBC)。本研究旨在量化巴西南部23种土壤的KBC，并重新计算达到K临界水平所需的速率。土壤样品在6种K率下孵育，因此根据CEC pH7.0分组:低于7.5 cmol c dm -3(0,30, 60, 90, 120和180 kg k2o ha -1);从7.6至15 cmol cdm -3(0、30、60、120、180和240 kg k2o -1)和15.1至30 cmol cdm -3(0、30、60、120、240和360 kg k2o -1)。采用Mehlich-1提取土壤试验钾(STK)，定量测定每增加1 mg dm -3所需的施肥量。KBC值与一套土壤测试指标相关。对阳离子交换容量(CEC pH7.0)与KBC之间的关系进行了建模，得到了最适合的线性平台方程。K率计算公式为:K率=(临界水平- STK) × KBC，并与当地土壤肥力委员会给出的现行K率进行比较。KBC施钾量约为目前所示值的2.5倍，在低STK和高CEC pH7.0土壤中差异最大。
{"title":"Potassium buffering capacity and corrective potassium fertilizer recommendations in soils from Southern Brazil","authors":"Abelino Anacleto de Souza, G. L. Mumbach, Édila Almeida, Douglas Luiz Grando, L. Gatiboni, G. Brunetto, P. Ernani","doi":"10.36783/18069657rbcs20220010","DOIUrl":"https://doi.org/10.36783/18069657rbcs20220010","url":null,"abstract":": Soils with low potassium (K) availability require corrective fertilization for grain crops. The recommended rate to increase K availability up to the critical level depends on the soil K buffering capacity (KBC). This study aimed to quantify the KBC and recalculate the rates necessary to reach the K critical level in 23 soils from Southern Brazil. Soil samples were incubated with six K rates, that were thus grouped according to CEC pH7.0 : below 7.5 cmol c dm -3 (0, 30, 60, 90, 120 and 180 kg K 2 O ha -1 ); from 7.6 to 15 cmol c dm -3 (0, 30, 60, 120, 180 and 240 kg K 2 O ha -1 ) and from 15.1 to 30 cmol c dm -3 (0, 30, 60, 120, 240 and 360 kg K 2 O ha -1 ). The soil test K (STK) was extracted by Mehlich-1 and the fertilizer rates necessary to increase the STK by 1 mg dm -3 were quantified. The KBC values were correlated with a suite of soil testing metrics. The relationship between the cation exchange capacity (CEC pH7.0 ) and KBC was modeled, and a linear-plateau equation presented the best fit. The K rates were calculated using the following equation: K rate = (Critical Level - STK) × KBC and were compared with the current rate indicated by the Local Soil Fertility Committee. The K fertilizer rates by KBC were about 2.5 times higher than the values currently indicated, and the largest differences were observed in soils with low STK and high CEC pH7.0 .","PeriodicalId":21215,"journal":{"name":"Revista Brasileira De Ciencia Do Solo","volume":"1 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69744776","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.36783/18069657rbcs20220007
R. C. Leite, Y. C. Pereira, C. A. Oliveira-Paiva, A. Moraes, G. Silva
: Microorganisms in the soil and rhizosphere can release part of the total phosphorus in the soil through solubilization, mineralization, and an increase of the root absorption surface. The ability of phosphate solubilizing bacteria and mycorrhizal fungi to promote higher yield and profitability in co-inoculated soybean was investigated. For this purpose, field and greenhouse experiments were conducted in the years 2020 and 2021 in Brazil. In the field, the first factor was composed of microorganism application on soybean (simple inoculation with Bradyrhizobium; co-inoculation with Bacillus strains; co-inoculation with arbuscular mycorrhiza), and the second factor consisted of the application or not of phosphate fertilizer (0 and 100 kg ha -1 of P 2 O 5 ). In the greenhouse, treatments of the first factor were maintained with 50 % of the phosphate fertilization and one treatment added (standard inoculation with 100 % of the fertilization). Plant growth, roots, nodules, leaf nutrition, yield, and profitability were evaluated. In 2020, co-inoculation increased plant height, the number of pods, grains, and profitability index. The co-inoculation with Bacillus strains and arbuscular mycorrhiza promoted yield increase only associated with phosphate fertilization, by 813 and 761 kg ha -1 compared to standard inoculation, respectively. In 2021, there were increases for pods, grains, yield, gross profit, net income, and profitability index. Co-inoculation with Bacillus strains and arbuscular mycorrhiza promoted increased soybean yield and profitability, confirming itself as a sustainable technology for Brazilian soybean fields.
:土壤和根际微生物可通过增溶、矿化、增加根吸收面等方式释放土壤中部分总磷。研究了增磷菌和菌根真菌在共接种大豆时提高产量和效益的能力。为此，我们于2020年和2021年在巴西进行了田间和温室试验。在田间，第一个因素是微生物在大豆上的应用(简单接种缓生根瘤菌;与芽孢杆菌共接种;与丛枝菌根共接种)，第二个因素是是否施用磷肥(磷肥用量为0和100 kg ha -1)。在温室中，维持第一个因子的处理，施用50%的磷肥，并添加一个处理(标准接种，施用100%的磷肥)。对植物生长、根系、根瘤、叶片营养、产量和盈利能力进行了评估。2020年共接种提高了植株高度、荚果数、籽粒数和盈利指数。与标准接种相比，芽孢杆菌菌株和丛枝菌根共接种仅与磷肥相关，产量分别增加813和761 kg ha -1。2021年，豆荚、粮食、产量、毛利、净收入和盈利能力指数均有所增加。芽孢杆菌菌株和丛枝菌根的共接种提高了大豆的产量和盈利能力，证实了它是巴西大豆田的一种可持续技术。
{"title":"Increase in yield, leaf nutrient, and profitability of soybean co-inoculated with Bacillus strains and Arbuscular mycorrhizal fungi","authors":"R. C. Leite, Y. C. Pereira, C. A. Oliveira-Paiva, A. Moraes, G. Silva","doi":"10.36783/18069657rbcs20220007","DOIUrl":"https://doi.org/10.36783/18069657rbcs20220007","url":null,"abstract":": Microorganisms in the soil and rhizosphere can release part of the total phosphorus in the soil through solubilization, mineralization, and an increase of the root absorption surface. The ability of phosphate solubilizing bacteria and mycorrhizal fungi to promote higher yield and profitability in co-inoculated soybean was investigated. For this purpose, field and greenhouse experiments were conducted in the years 2020 and 2021 in Brazil. In the field, the first factor was composed of microorganism application on soybean (simple inoculation with Bradyrhizobium; co-inoculation with Bacillus strains; co-inoculation with arbuscular mycorrhiza), and the second factor consisted of the application or not of phosphate fertilizer (0 and 100 kg ha -1 of P 2 O 5 ). In the greenhouse, treatments of the first factor were maintained with 50 % of the phosphate fertilization and one treatment added (standard inoculation with 100 % of the fertilization). Plant growth, roots, nodules, leaf nutrition, yield, and profitability were evaluated. In 2020, co-inoculation increased plant height, the number of pods, grains, and profitability index. The co-inoculation with Bacillus strains and arbuscular mycorrhiza promoted yield increase only associated with phosphate fertilization, by 813 and 761 kg ha -1 compared to standard inoculation, respectively. In 2021, there were increases for pods, grains, yield, gross profit, net income, and profitability index. Co-inoculation with Bacillus strains and arbuscular mycorrhiza promoted increased soybean yield and profitability, confirming itself as a sustainable technology for Brazilian soybean fields.","PeriodicalId":21215,"journal":{"name":"Revista Brasileira De Ciencia Do Solo","volume":"1 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69745154","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.36783/18069657rbcs20220090
Junnan Ding, Nan Xu
{"title":"Variations of soil bacterial microbial community and functional structure under different land-uses","authors":"Junnan Ding, Nan Xu","doi":"10.36783/18069657rbcs20220090","DOIUrl":"https://doi.org/10.36783/18069657rbcs20220090","url":null,"abstract":"","PeriodicalId":21215,"journal":{"name":"Revista Brasileira De Ciencia Do Solo","volume":"1 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69746341","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.36783/18069657rbcs20220070
Selma Barbosa Bastos, F. Vezzani, Valentim da Silva, M. R. D. Lima
: Soil Education aims to give individuals a transforming formative process for conscious actions related to the soil in their life experiences in and with the world. As such, the educational methodologies addressing soil-related contents should be in dialogue with the purpose of this educational process. On the perspective of education for social transformation, it is recommended that professors of Higher Education avoid from pedagogical actions with traditional approaches, and start using other strategies and methodologies centered on students and their context. With the challenge of addressing the implementation of emancipatory principles in educational procedures within the disciplinary structure of a traditional paradigm of education and achieving the aim of Soil Education, we put forward the Alternative Methodology of Problem Cases (AMPC), which was shaped up from two methodologies with constructivist principles, P roblem-Based Learning (PBL) and Team-Based Learning (TBL). This methodology is divided into three phases (preparation, application, and reflection), which are in turn divided into seven steps that complement each other (recovery of socio-historical knowing and knowledge; study of the themes; problem case resolution; team guidance; individual activity report; and individual and collective feedback). In addition, the steps contain individual and team assignments, which revolve around the resolution of problem cases related to the future profession. The AMPC is different from PBL and TBL as the former is grounded on emancipatory principles that facilitate the development of educational processes that value the socio-historical knowing and knowledge of individuals and enable the development of students’ autonomy, creativity, critical thinking, and awareness for actions in real life. The challenges through which individuals can develop relational, complex, and critical thinking, apply them to professional life situations, confront and reframe their knowledge and knowing, as well as create solutions and plan future scenarios with the practice of solving problem cases about soils consist in the capacity of AMPC to be efficient to soil learning.
{"title":"Alternative Methodology of Problem Cases - AMPC for soil education guided by emancipatory principles","authors":"Selma Barbosa Bastos, F. Vezzani, Valentim da Silva, M. R. D. Lima","doi":"10.36783/18069657rbcs20220070","DOIUrl":"https://doi.org/10.36783/18069657rbcs20220070","url":null,"abstract":": Soil Education aims to give individuals a transforming formative process for conscious actions related to the soil in their life experiences in and with the world. As such, the educational methodologies addressing soil-related contents should be in dialogue with the purpose of this educational process. On the perspective of education for social transformation, it is recommended that professors of Higher Education avoid from pedagogical actions with traditional approaches, and start using other strategies and methodologies centered on students and their context. With the challenge of addressing the implementation of emancipatory principles in educational procedures within the disciplinary structure of a traditional paradigm of education and achieving the aim of Soil Education, we put forward the Alternative Methodology of Problem Cases (AMPC), which was shaped up from two methodologies with constructivist principles, P roblem-Based Learning (PBL) and Team-Based Learning (TBL). This methodology is divided into three phases (preparation, application, and reflection), which are in turn divided into seven steps that complement each other (recovery of socio-historical knowing and knowledge; study of the themes; problem case resolution; team guidance; individual activity report; and individual and collective feedback). In addition, the steps contain individual and team assignments, which revolve around the resolution of problem cases related to the future profession. The AMPC is different from PBL and TBL as the former is grounded on emancipatory principles that facilitate the development of educational processes that value the socio-historical knowing and knowledge of individuals and enable the development of students’ autonomy, creativity, critical thinking, and awareness for actions in real life. The challenges through which individuals can develop relational, complex, and critical thinking, apply them to professional life situations, confront and reframe their knowledge and knowing, as well as create solutions and plan future scenarios with the practice of solving problem cases about soils consist in the capacity of AMPC to be efficient to soil learning.","PeriodicalId":21215,"journal":{"name":"Revista Brasileira De Ciencia Do Solo","volume":"1 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69751546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-01-01DOI: 10.36783/18069657rbcs20220074
L. Pinto, C. F. Silva, T. Melo, Jean Sérgio Rosset, M. G. Pereira
{"title":"Stability, labile organic carbon, and glomalin of biogenic aggregates in sandy soils under management systems in the subtropical region of Brazil","authors":"L. Pinto, C. F. Silva, T. Melo, Jean Sérgio Rosset, M. G. Pereira","doi":"10.36783/18069657rbcs20220074","DOIUrl":"https://doi.org/10.36783/18069657rbcs20220074","url":null,"abstract":"","PeriodicalId":21215,"journal":{"name":"Revista Brasileira De Ciencia Do Solo","volume":"1 1","pages":""},"PeriodicalIF":1.7,"publicationDate":"2022-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"69751709","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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