|
|
|
| Registros recuperados: 11 | |
|
| |
|
|
| Toledo,João V.; Zolnier,Sérgio; Silva,Thieres G. F. da; Boehringer,Davi; Steidle Neto,Antonio J.. |
| ABSTRACT: The aim of this research was to evaluate the effect of distinct levels of salinity on the evapotranspiration of the RB867515, RB855453, RB92579 and RB928064 sugarcane cultivars. The evapotranspiration was monitored during daytime period under meteorological conditions influenced, mainly by cloud variations. The salinity values were established by addition of 0, 50, 100 and 150 mM of Sodium Chloride (NaCl) to the nutrient solution, which was applied by fertigation, in such way that the electrical conductivity (EC) of the leached solution was near 3, 6, 10 and 13 dS m−1, respectively. The increase of the NaCl concentration in the nutrient solution affected, significantly and in a linear manner, the evapotranspiration of all sugarcane cultivars,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Efficient water use; Saccharum officinarum; Saline stress; Salinization. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162017000500940 |
| |
|
|
| Sampaio Junior,Jésus; Amaral,Nelson M. B. do; Zonta,Everaldo; Magalhães,Marcio O. L.. |
| ABSTRACTThis study aimed to evaluate the effects of the application of two types of oil drilling wastes on the development and absorption of barium (Ba) and sodium (Na) by sunflower plants. The waste materials were generated during the drilling of the 7-MGP-98D-BA oil well, located in the state of Bahia, Brazil. The treatments consisted of: Control – without Ba application, comprising only its natural levels in the soil; Corrected control – with fertilization and without wastes; and the Ba doses of 300, 3000 and 6000 mg kg-1, which were equivalent to the applications of 16.6, 165.9 and 331.8 Mg ha-1 of waste from the dryer, and 2.6, 25.7 and 51.3 Mg ha-1 of waste from the centrifugal. Plants cultivated using the first dose of dryer waste and the second... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Heavy metals; Helliantus annus; Salinization. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662015001101100 |
| |
|
|
| Gomes,Felipe Haenel; Ker,João Carlos; Ferreira,Tiago Osório; Moreau,Ana Maria Souza dos Santos; Moreau,Maurício Santana. |
| ABSTRACT Despite its importance, studies of mangrove soils are scarce, especially from a pedological perspective. The objective of this work was to study the genesis of soils in a mangrove environment in northeastern Brazil (Ilhéus, Bahia) through a morphological, physical, chemical and mineralogical characterization. All soils presented a sandy texture, which is related to the parent material (Quaternary sand deposits). The tidal flooding and resulting hydromorphic conditions is responsible for dominance of dark grey colors, and high organic matter contents (paludization process). As well as the high values of electrical conductivity (EC) and dominance of Na+ in the saturation extract (salinization and solodization processes, respectively). Contrastingly,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mangrove ecosystem; Sulfidization; Paludization; Salinization; Solodization; Soil organic fractions. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902016000400599 |
| |
|
|
| Pinto,José R. de S.; Freitas,Rômulo M. O. de; Leite,Tiago de S.; Oliveira,Francisco de A. de; Ferreira,Hugo; Leite,Moadir de S.. |
| ABSTRACT This study aimed to evaluate the growth of young Tabebuia aurea seedlings irrigated with different concentrations of wastewater from fish farming. The experiment was conducted in a seedling nursery, from June to August 2013. The treatments consisted of five concentrations of wastewater from fish farming diluted in freshwater (0, 25, 50, 75 and 100% of wastewater). Plant height, stem diameter and plant height/stem diameter ratio were evaluated every 15 days to verify the effects of treatments on seedlings growth. At the end of the experiment, individual leaf area, leaf area, leaf dry matter, stem dry matter, root dry matter, total dry matter and Dickson quality index were also evaluated. The reuse of wastewater from fish farming diluted at... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Water reuse; Seedling production; Salinization; Reforestation. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000600519 |
| |
|
|
| Dias,Francisco Yago Elias de Castro; Bonilla,Oriel Herrera; Lucena,Eliseu Marlônio Pereira de; Lacerda,Claudivan Ferreira de; Oliveira,Daniel Pereira de; Oliveira,Davi Rodrigues. |
| ABSTRACT: This study was an endeavor undertaken to assess the biomass yield of the species that are native to a particular region characterized by saline soil, in the Irrigated Perimeter Curu-Pentecoste, in the municipality of Pentecoste-CE, corresponding to the qualities of moisture, pH and electrical conductivity (EC) of the soil. The experiment was conducted in six areas, with area 1, the one nearest to the collecting drain, the end having the highest salinity and area 6, the one furthest away from the collecting drain, the end with the lowest salinity. The factorial design with the 2 x 6 scheme was adopted, in which the first and second factors referred, respectively, to the seasons (drought and rain collection) and collection areas. In each area,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phytomass; Halophytes; Salinization. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782020000300251 |
| |
|
|
| Lima,Alexandre de O.; Dias,Nildo da S.; Lima Filho,Francisco P.; Ferreira Neto,Miguel; Rego,Priscila R. do A.; Souza,Anderson de M.. |
| ABSTRACT The regional characteristics of waters from alluvial aquifers are different, since they depend on geology and climate. Also, there may be local variation in the quality of the available water when the water source is superficial (rivers and lakes) or is underground due to geology. In order to investigate the groundwater quality of the alluvial aquifer in the Sub-Basin of the Cobra River (RN) for construction of underground dams, five wells, four in the main river and one in the tributary, were monitored in dry and rainy seasons, during two hydrological years. Fifteen water samples from ‘Amazonas’ wells were collected for hydrochemical assessment. Multivariate analysis were performed to evaluate the origin of aquifer recharge and water... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Water quality; Salinization; Environmental impacts. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017001100785 |
| |
|
|
| Blanco,Flávio F.; Folegatti,Marcos V.. |
| The effects of irrigation water salinity, leaching fraction and its frequency of application on soil salinization were studied. Three water salinities (S1=1.54, S2=3.10 and S3=5.20 dS m-1) and two irrigation water depths associated with their application frequencies (W1=1.00 ETc; W2F1=1.25 ETc in all irrigations and W2F2=1.25 ETc when the irrigation water depth of W1 reached 100 mm where ETc is the crop evapotranspiration), were applied during the growing period of a grafted-cucumber crop in a greenhouse. The experimental design consisted of randomized blocks of 3 x 3 factorial scheme with 3 replications. Soil salinity at 0.1, 0.3 and 0.5 m depths increased linearly with salinity levels of water and the leaching fraction did not have any effect regardless... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Salinization; Leaching fraction; Leaching frequency. |
| Ano: 2002 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662002000300006 |
| |
|
| |
|
|
| Filipová,Ladislava; Hédl,Radim; Covacevich C.,Nilo. |
| The wetland meadows and pastures (vegas) of the agricultural zone of the Magallanes Region and the Chilean Patagonia are productive and intensively exploited ecosystems. However, there is scarce data about the typology and the physical and chemical properties of the soils that determine the agricultural potential of vegas sites. Sampling of the main horizons of 47 soil profiles was conducted throughout the area. The profiles were described in the field and consequently classified according to the soil typology system of the WRB (IUSS Working Group WRB, 2006). Analyses of bulk and particle densities, capillary water capacity, pH (H2O), pH (CaCl2), texture, organic material, C:N ratio, electrical conductivity, effective cation exchange capacity, N, P,... |
| Tipo: Journal article |
Palavras-chave: Histosols; Fluvisols; Peat; Soil properties; Salinization; Soil degradation. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392010000200010 |
| |
|
| |
| Registros recuperados: 11 | |
|
|
|
