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| Registros recuperados: 40 | |
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| López Blancas, Sergio. |
| En la recuperación de suelos salino-sódicos con aplicación de S y establecimiento de cultivos tolerantes, los nitratos pueden lixiviarse en el perfil del suelo o acumularse en el tejido vegetal. Esto podría reducirse mediante la promoción de la oxidación del S aplicado, ya que con ello se favorece la desnitrificación y la absorción de sulfatos por los cultivos, limitando la acumulación de nitratos en el suelo y en las plantas, respectivamente. El objetivo del presente trabajo fue determinar el efecto del S en: la lixiviación de nitratos en el perfil del suelo, la concentración de S, nitratos y micronutrimentos del tejido vegetal, la fertilidad del suelo y el rendimiento de especies forrajeras en un suelo salino-sódico. Se establecieron parcelas con... |
| Tipo: Tesis |
Palavras-chave: Lixiviación; Sulfatos; Recuperación de suelos; Maestría; Edafología; Leaching; Sulfates; Soil recovery. |
| Ano: 2009 |
URL: http://hdl.handle.net/10521/1550 |
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| Oliveira,Jacineumo F. de; Rodrigues,Fernando N.; Fia,Ronaldo; Mafra,Dayana C. B.; Landim,Daniela V.. |
| ABSTRACT The objective of this study was to evaluate the quality of the percolate in soil columns cultivated with Tiffon-grass 85 under different wastewater rates from swine slaughterhouse and dairy. The experiment was conducted at the Department of Engineering at the Federal University of Lavras, in PVC columns with 0.30 m of diameter and 1.2 m deep, filled with Dark Red Latosol cultivated with Tifton-grass 85. The treatments consisted of a (AQT0) control with recommended chemical fertilization for Tifton-grass 85 (300 kg ha-1 year-1 of N), and four doses of SSW and DPW (100, 200, 300 and 400% of the recommendation) in a CRD with 3 replications. The samples of percolated were collected and characterized weekly. The treatments of highest dosage have... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Water reuse; Wastewater; Leaching; Soil disposal; Agroindustry wastewaters. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000601222 |
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| Silvano,Caroline; Freitas,Paulo S. L.; Rezende,Roberto; Mioto,Liliane S.; Dallcort,Rivanildo. |
| ABSTRACT The gelatin industry wastewater has nutrients in its composition, allowing its use in agriculture as an alternative to disposal and recycling of this residue. However, high application rates can cause the accumulation of elements such as sodium in the soil, and generate negative impacts on the environment. This study aimed to evaluate the effects of the application of rates up to 600 m3ha-1 of gelatin industry wastewater in soil columns, on soil chemical attributes in five depths. The experiment was conducted in a greenhouse, in PVC tube columns (0.20 m diameter) filled with distroferric Red Nitosol soil, of very clayey texture. The treatments consisted of increasing rates of wastewater equivalent to 0, 150, 300, 450 and 600 m3 ha-1, with a single... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fertirrigation; Leaching; Sodium; Soil fertility. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162018000400606 |
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| Carneiro,Leocir J.; Costa,Mônica S. S. de M.; Costa,Luiz A. de M.; Martins,Marcos F. L.; Rozatti,Marcos A. T.. |
| The management of composting may influence the characteristics of the produced compounds. The experiment used three frequencies of plowing, combined with the conditions: with and without coverage of the composting patio, with and without the use of commercial inoculant, resulting in 12 furrows, installed on the Experimental Center of Agricultural Engineering (NEEA), of the STATE UNIVERSITY OF WEST PARANÁ (UNIOESTE), Campus of Cascavel city - state of Paraná (PR), in Brazil. The waste and quantities used in kg were: corn cob (7.5); hatchery residue (5); floater sludge (31); ash (1); wheat cleaning residue (120); wheat pre-cleaning residue (120); corn peel (7.5); solid fraction of wash trucks used to transport chickens (2); solid fraction of pig manure (1)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Volatilization; Leaching; Inoculation; Turn of plowing. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000400019 |
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| Rech,Ioná; Polidoro,José Carlos; Pavinato,Paulo Sérgio. |
| Abstract: The objective of this work was to develop urea-based fertilizers with internal incorporation of urease inhibitors and other additives in the granule. The effects of the incorporation of NBPT, copper (Cu+2), boric acid (H3BO3), elemental sulphur (Sº), and a clay mineral from the zeolite group in powder urea - with ten different combinations of these additives - were evaluated as to N losses by volatilization and leaching. The losses in laboratory-developed formulations were compared with those of commercial fertilizers coated with the same additives (Super N, FH Nitro Mais, and FH Nitro Gold). The evaluations were made in greenhouse conditions, using a Ultisol accommodated in PVC columns. Nitrate and ammonium leaching was evaluated in the solution... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Ammonia volatilization; Leaching; NBPT; Nitrogen fertilizers; Urease inhibitors. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2017000300194 |
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| Bundt,A.D.C.; Avila,L.A.; Agostinetto,D.; Nohatto,M.A.; Vargas,H.C.. |
| Herbicides used in Clearfield(r) rice system may persist in the environment, damaging non-tolerant crops sown in succession and/or rotation. These damages vary according to soil characteristics, climate and soil management. The thickness of the soil profile may affect carryover effect; deeper soils may allow these molecules to leach, reaching areas below the roots absorption zone. The aim of this study was to evaluate the effect of the thickness of soil profile in the carryover of imazethapyr + imazapic on ryegrass and non-tolerant rice, sown in succession and rotation to rice, respectively. Lysimeters of different thicknesses (15, 20, 30, 40, 50 and 65 cm) were constructed, where 1 L ha-1 of the imazethapyr + imazapic formulated mixture was applied in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Degradation; Imidazolinone; Lolium multiflorum; Leaching; Oryza sativa. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582015000200357 |
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| A. Matos,Ana K.; Carbonari,Caio A.; F.S. Brito,Ivana P.; L.G.C. Gomes,Giovanna; B. Trindade,Maria L.; D. Velini,Edivaldo. |
| Abstract Background: The use of commercial mix and tank mix with two or more herbicides is a widespread practice. However, despite its several possible benefits, little is known about its effect on the behavior of the molecules in the soil, which can increase or reduce the leaching potential of these molecules. Objective: This study evaluated the leaching potential of the herbicides diuron and sulfentrazone applied, using commercial mix and tank mix, in soils with different textures. Methods: The herbicides diuron (1,750 g ha-1) and sulfentrazone (875 g ha-1) were applied in three soils with different textures (clayey, medium, and sandy), using a commercial mix (Stone®) and a tank mix (Herburon 500 BR + Boral®). Subsequently, the treated soils were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Herbicide; Leaching; Commercial mix; Tank mix. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582020000100318 |
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| Carvalho,S.J.P.; Soares,D.J.; Lopez-Ovejero,R.F.; Christoffoleti,P.J.. |
| Two experiments were carried out to evaluate soil persistence of chlorimuron-ethyl and metsulfuron-methyl and phytotoxicity to corn seeded as a succeeding crop. One experiment was conducted with chlorimuron-ethyl applied at 20 g ha-1, and one with metsulfuron-methyl applied at 3.96 g ha-1. Treatments were arranged in a factorial design with two types of soil (sandy and clay), three irrigation regimes (daily, weekly and no irrigation) and four application timings (90, 60 and 30 days before corn seeding, as well as untreated plots). Soil persistence of the herbicides was influenced by water availability, molecule water solubility (leaching potential) and application timings prior to corn seeding. In sandy soil, with adequate water availability, leaching... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carryover; Leaching; Microbial degradation; Dynamics. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582015000200331 |
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| Registros recuperados: 40 | |
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