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| Registros recuperados: 837 | |
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| Oliveira,Jacineumo F. De; Rodrigues,Fernando N.; Fia,Ronaldo; Vilela,Hévelyn S.; Landim,Daniela V.. |
| ABSTRACT The aim of this study was to evaluate the soil chemical properties submitted to fertigation with slaughterhouse (SW) and dairies (DW) wastewater. The experiment was conducted in the Environmental Engineering Center and Sanitary of UFLA/MG in PVC columns filled with Dark Red Latosol (Oxisol) and randomly distributed. The treatments applied with nitrogen based load (300 kg ha years-1 of N) consisted of four doses of SW and DW (100, 200, 300 and 400% of the recommendation) and AQT0 control at random. The soil was collected at a depth of 0.30 m and, subsequently, characterized in terms of physical, chemical and physicochemical. The application of treatment of the largest irrigation of DW provided, after 120 days of monitoring, N concentration of 1.85... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil quality; Fertigation; Plant nutrition; Agroindustrial wastewater. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000601244 |
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| Arcoverde,Sálvio N. S.; Cortez,Jorge W.; Olszevski,Nelci; Salviano,Alessandra M.; Giongo,Vanderlise. |
| ABSTRACT The inadequate agricultural management in the semiarid region of northeastern Brazil, associated with the fragility of most soils, has caused degradation of the quality of this resource. This study aimed to evaluate the quality of Quartzipsamments under different uses through the multivariate analysis of chemical and physical attributes. Five areas were selected: four of them with agricultural use (onion, banana, cassava, and corn) and the other with Caatinga. Soil samples were collected at depths of 0.00–0.10, 0.10–0.20, and 0.20–0.40 m for chemical and physical analyses. The data were submitted to descriptive analysis and then to the multivariate analysis using the principal component analysis (PCA) technique and Ward’s clustering method. PCA... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Principal component; Quality indicator; Soil quality; Sandy soils. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162019000400457 |
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| PEREZ, D. V.; PEREIRA, N. R.; CARVALHO JUNIOR, W. de; CALDERANO FILHO, B.; BHERING, S. B.; CHAGAS, C. da S.; SILVA, E. F. da; MACEDO, J. R. de. |
| Vários países têm tentado estabelecer valores de referência de solo ("background" ou "baseline") para elementos químicos tóxicos ou potencialmente tóxicos com vistas ao estabelecimento de uma legislação que regule o uso do solo como via alternativa para aplicação de resíduos domésticos/industriais. Com isso, mitigaria-se a acumulação de poluentes inorgânicos e seu possível impacto sobre a biota e as águas subterrâneas. No Brasil, a legislação referente ao assunto foi promulgada em 2009 (Resolução CONAMA nº 420 (Conselho Nacional do Meio Ambiente, 2009)). Nesse sentido, o objetivo principal do trabalho foi determinar os valores de referência de qualidade (VRQ) de uma série de elementos químicos (Fe, Mn, Sb, As, Ba, Cd, Pb, Co, Cu, Cr, Mo, Ni, Ag, Se, V e... |
| Tipo: Folhetos |
Palavras-chave: Selo ODS 2; Água Régia; Aqua regia; Baseline concentration; Análise do Solo; Qualidade; Química do Solo; Águas Residuais; Soil analysis; Soil quality; Soil chemistry. |
| Ano: 2022 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1149795 |
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| Dungan, R.S.; Kim, J.; Weon, H.; Leytem, A.B.. |
| The purpose of this research was to characterize the structure and composition of bacterial communities in sandy loam and silty clay soils amended with 30% spent sand from iron, aluminum, and steel foundries. All spent foundry sand (SFS) blends were grown with or without perennial ryegrass and samples were collected at 4 weeks and 6 months. Regions of the 16S rRNA gene were amplified using PCR and subsequently analyzed by DGGE and sequenced for bacterial identification and phylogenetic classification. Cluster analyses of PCR-DGGE banding patterns revealed that SFS blends from week 4 and month 6 produced unique clusters, with most ryegrass treatments clustering away from those without ryegrass. The diversity of the bacterial community revealed that it... |
| Tipo: Article |
Palavras-chave: Soil; Soil quality. |
| Ano: 2009 |
URL: http://eprints.nwisrl.ars.usda.gov/1339/1/1316.pdf |
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| Letey, J.; Sojka, R.E.; Upchurch, D.R.; Cassel, D.K.; Olson, K.R.; Payne, W.A.; Petrie, S.E.; Price, G.H.; Reginato, R.J.; Scott, H.D.; Smethurst, P.J.; Triplett, G.B.. |
| Tipo: Article |
Palavras-chave: Soil quality; Mass Import - autoclassified (may be erroneous). |
| Ano: 2003 |
URL: http://eprints.nwisrl.ars.usda.gov/168/1/1111.pdf |
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| Blecker, S.W.; STILLINGS, L.L.; MCAMACHER, M.C.; Ippolito, J.A.; DECRAPPEO, N.M.. |
| Soil quality indices are often management driven and attempt to describe key relationships between above- and below-ground parameters. In terrestrial systems, indices that were initially developed and modified for agroecosystems have been applied to non-agricultural systems in increasing number. We developed a soil quality index in arid and semi-arid ecosystems of the Western US impacted by different types of geologic mineralization using the relationship between vegetation community parameters and soil abiotic and biotic properties. We analyzed these relations in soils associated with three different mineralization types: podiform chromite, Copper/Molybdenum porphyry, and acid-sulfate gold vein systems at four different sites in California and Nevada.... |
| Tipo: Article |
Palavras-chave: Soil quality; Soil. |
| Ano: 2012 |
URL: http://eprints.nwisrl.ars.usda.gov/1448/1/1413..pdf |
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| Ippolito, J.A.; Spokas, K.A.; Novak, J.M.; Lentz, R.D.; Cantrell, K.B.. |
| Biochar is the carbonaceous solid byproduct of the thermochemical conversion of a carbon-bearing organic material, commonly high in cellulose, hemicelluloses, or lignin content, for the purposes of carbon sequestration and storage. More specifically, the thermal conversion process known as pyrolysis occurs when carbon-containing substances are introduced to elevated temperatures in the absence of oxygen at varying residence times, yielding biochar. Several pyrolysis techniques employed to produce biochar differ in the temperature of reaction and residence time in the reactor. Different reactor residence times are described as slow (hours to days), fast (seconds to minutes), and flash (seconds). Fast or flash pyrolysis typically occurs around 500oC with... |
| Tipo: Book Section |
Palavras-chave: Fertility; Soil quality; Fertilizer. |
| Ano: 2015 |
URL: http://eprints.nwisrl.ars.usda.gov/1590/1/1547.pdf |
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| Novak, J.M.; Busscher, W.J.; Watts, D.W.; Amonette, J.; Ippolito, J.A.; Lima, I.M.; Gaskin, J.; Das, K.C.; Steiner, C.; Ahmedna, M.; Rehrah, D.; Schomberg, H.H.. |
| Droughts associated with low or erratic rainfall distribution can cause detrimental crop moisture stress. This problem is exacerbated in the USA’s arid western and southeastern Coastal Plain due to poor rainfall distribution, poor soil water storage, or poorly-aggregated, subsurface hard layers that limit root penetration. We hypothesized that soil physical deficiencies may be improved by biochar applications. Research indicates a single biochar will not serve as a universal supplement to all soils; consequently, biochars may need to be designed with physico-chemical properties that can ameliorate specific soil physical deficiencies. We conducted a laboratory study that examined the effect of biochar on soil moisture retention and aggregate formation.... |
| Tipo: Article |
Palavras-chave: Soil quality; Soil water (soil moisture). |
| Ano: 2012 |
URL: http://eprints.nwisrl.ars.usda.gov/1523/1/1485.pdf |
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| Lentz, R.D.; Ippolito, J.A.; Spokas, K.A.. |
| Aluminum-based water treatment residuals (Al-WTR) have a strong affinity to sorb phosphorus. In a proof-of-concept greenhouse column study, Al-WTR was surface-applied at 0, 62, 124, and 248 Mg/ha to 15 cm of soil on top of 46 cm of sand; Al-WTR rates were estimated to capture 0, 10, 20, and 40 years of phosphorus from an urban watershed entering an engineered wetland in Boise, Idaho, USA. Creeping red fescue (Festuca rubra) was established in all columns; one set of columns received no Al-WTR or plants. After plant establishment, once per week over a 12-week period, ~1.0 pore volumes of ~0.20 mg phosphorus/L was added to each column. Infiltration rates were measured, leachate was collected and analyzed for soluble phosphorus, and fescue yield,... |
| Tipo: Article |
Palavras-chave: Chemistry; Soil quality. |
| Ano: 2015 |
URL: http://eprints.nwisrl.ars.usda.gov/1592/1/1550.pdf |
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| Leytem, A.B.; Bjorneberg, D.L.; Sheffield, R.E.; de Haro Marti, M.E.. |
| The volatilization of NH3 from landapplied manure is not only a loss of valuable N, but also an air quality concern because NH3 plays a role in the formation of airborne particulate matter, which can be a health hazard. The relative differences in potential NH3 losses from land application of liquid dairy manure were determined via 3 methods: surface application, Aerway incorporation (shallow incorporation with a rolling tine aerator), and subsurface injection. Liquid manure was applied at a rate of 190 m3/ha on 4 farms with average N and P application rates ranging from 28 to 130 kg N/ha and 6 to 36 kg P/ha, respectively. Average NH3 concentrations were measured with passive samplers for 3 d after manure application and ranged from 0.03 to 0.21 mg... |
| Tipo: Article |
Palavras-chave: Soil; Manure; Animal; Soil quality. |
| Ano: 2009 |
URL: http://eprints.nwisrl.ars.usda.gov/1366/1/1343.pdf |
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| Registros recuperados: 837 | |
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