Soil Aluminium
Mostrando 13-20 de 20 artigos, teses e dissertações.
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13. Efeito de Alumínio, Molibdênio e de Estirpes de Rizóbio em Arachis pintoi / Effect of Aluminum, Molybdenum and strains of Rizóbio in Arachis pintoi
In a modern cattle-breeding using pastures that allows a gain of weight is an essential factor. The Arachis pintoi is an option to a good alimentary diet and to the recuperation of degraded pastures, due to its potential in biological fixation of nitrogen and resistance to acid soil with high contents of aluminium. Experiments were conducted in greenhouse an
Publicado em: 2007
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14. Adsorção de glifosato sobre solos e minerais
Glyphosate, an enzyme inhibitor herbicide, has been widely used around the world in agriculture. Dr. John Franz from Monsanto Corporation (USA) discovered glyphosate in 1970. It has been showed that glyphosate is strongly adsorbed by inorganic soil components especially aluminium and iron oxides, and the phosphate group is involved in this interaction. The i
Química Nova. Publicado em: 2006-07
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15. Síntese e caracterização de substâncias semelhantes aos ácidos húmicos de carvão de eucalipto, e sua interação com diclorofenol, cálcio, manganês e alumínio / Synthesis and characterization of humic acid-like substances from eucalypt charcoal, and its interaction with diclorofenol, calcium, manganese and aluminium
A wide range of commercial products containing humic substances have been applied successfully in agricultural and environmental remediation systems. Regarding their beneficial remediation characteristics, there is a high potential to adsorb heavy metals and organic pollutants, thus reducing their bioavailability. Industrially, they are extracted from non-re
Publicado em: 2005
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16. Floristic composition and horizontal structure of a Montane Semideciduous Seasonal Forest Juquinha de Paulas Forest, Viçosa, MG / Florística e estrutura horizontal de uma Floresta Estacional Semidecidual Montana Mata do Juquinha de Paula, Viçosa, MG
This research aimed characterise the floristic composition and tree community structure throughout a toposequence in a Semideciduous Seasonal Forest patch in the municipality of Viçosa, Minas Gerais State, Brazil (2045S and 4255W). The climate in the region is Cwb by Köppen system. Sampling was carried out by the plot method, where five groups of four cont
Publicado em: 2002
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17. O banco de sementes de um fragmento de floresta estacional semidecidual no municipio de Campinas, SP
The characterization of seed banks is an important subsidy to the conservationist action in forests. The main objective of this dissertation was to examine the soil under the canopy of Santa Genebra Forest (22°49 S 47°06 W Campinas, SP. For the presence of viable seeds by, sieving, air fluxing and sprouting seedling techniques. Samples of 900ml of soil(Eig
Publicado em: 2001
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18. Especies de lianas da Reserva Municipal de Santa Genebra, Campinas-SP : longevidade das sementes e crescimento inicial
Lianas (climbers) are plants that rely on mechanical support to grow taller. They are copious in natural and man-made clearings. The objectives of this study were: a) to verify the germination and viability of seeds stored in natural conditions, under the forest canopy (RSG). b) to observe the initial growth of seedlings maintained under full sunlight and sh
Publicado em: 1997
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19. Composição floristica e estrutura fitossociologica da vegetação de cerrado no municipio de Luis Antonio (SP)
The floristics and phytosociological structure of a cerrado área the Estação Experimental de Luís Antônio ( 21 GRAUS 40 S and 47 GRAUS 49 WG) were studied using general botanical collections and a survey of all the individuals with a diameter at soil level equal to, or greater than, 3 cm in 25 regularly distributed 10 x 25 mm plots. The method used appe
Publicado em: 1984
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20. Effects of environmental variables and soil characteristics on virus survival in soil.
Because of the increasing emphasis placed upon land application as a means of wastewater disposal, it is important to evaluate the influences of different factors upon virus survival in soil. The objective of this study was to measure the effects of various environmental variables on virus persistence. Test samples of soil were placed in vials, and the soil