Greenhouse Use Agriculture
Mostrando 13-24 de 32 artigos, teses e dissertações.
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13. Dioxide carbon emission from different soil tillage in the sugarcane plantation / Emissão de dióxido de carbono após diferentes sistemas de preparo do solo na cultura da cana-de-açúcar
The annual emissions of carbon dioxide (CO2), considered the greenhouse gas (GHG) more important, increased around 80% between 1970 and 2004. This increment mainly due to the use of fossil fuels, and agriculture as emissions from land use change. Land use management is an important tool to GHG emissions decrease. Agricultural soils can be a source or reservo
Publicado em: 2010
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14. Sistema de irrigação por capilaridade na produção de porta-enxertos de mudas citricas na fase de sementeira / Irrigation system by capillary action in the citrus rootstocks production in seedings stage
The water and nutrition management in the production of citrus rootstocks in the seedling phase performed by sprinkler systems, manually operated, presents the environmental outcome of water or residual solution disposal from the fertigation. The generated wastewater is generally discarded directly in the soil with the risk to reach the groundwater and conta
Publicado em: 2010
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15. Uso de resíduo orgânico da produção de biodiesel direta da semente na atenuação dos efeitos de hidrocarbonetos de petróleo no solo. / Use of organic residue from the biodiesel production directly from the seed in the reduction of petroleum hydrocarbons effect in soil.
In the search for energy resources that can minimize the environmental impact in the transportation, refining and distribution of fossil fuels, biodiesel is highlighted as an economically viable alternative and totally renewable if compared to petroleum. With the regulations of Law 11097, from 2005, Brazil became widely known as one of the planet largest pro
Publicado em: 2009
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16. Watercress crop to salinity using a NFT hidroponic system / Resposta da Cultura do Agrião à Salinidade Utilizando um Sistema Hidropônico do Tipo NTF
After the Brazilian agriculture started to be outstanding in the scenery of the scientific researches, the great challenge started to be the productivity standardization in whole national territory. One of the main focus is being the semi-arid area for its water scarcity, so much quantitative as qualitative, for being an area with low annual precipitation an
Publicado em: 2009
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17. Evaluation of physiological effect of fungicides on soybean crop / Avaliação do efeito fisiológico do uso de fungicidas na cultura de soja
The use of products with tonic action in plants has stimulated research in different areas of agriculture, where the use of fungicides with physiological effect became important. One of the most promising is the strobilurin Pyraclostrobin, that in addition to the fungicidal action has caused an increase in productivity attributed to the physiological effects
Publicado em: 2009
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18. Avaliação das alterações nos atributos físicos e químicos de um latossolo vermelho-amarelo submetido à aplicação de água de reúso / Evaluation of changes in physical and chemical attributes of a red-yellow latosol submitted to the implementation of water reuse
The use of treated sewage effluent to save the ponds used for irrigation has been of great interest in agriculture, and the unregulated use of this practice can cause changes in physical and chemical behavior of the soil. This practice has been of great interest in view of reducing the quantity of water withdrawal from the springs and its preservation, avoid
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/12/2008
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19. Economic and environmental sustainability of land and use system of family agriculture in State of Acre / Sustentabilidade socioeconômica e ambiental de sistemas de uso da terra da Agricultura Familiar no Estado do Acre
The depletion of Brazilian Amazon has as main negative consequences the greenhouse gas emissions and the extinction of species. The expansion of the agricultural in the Amazon, and particularly in the state of Acre, has been considered the main cause of that deforestation. The forest cut down has not been followed by improvements on the rural household life
Publicado em: 2008
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20. Validation of the NUTMON model for the diagnosis of agricultural management: study on two family farms in Rio de Janeiro State. / Validação do modelo NUTMON para o diagnóstico do manejo agrícola: Estudo em duas propriedades familiares do Rio de Janeiro.
This study had the following hypothesis: the agricultural production systems adopted by small farmers brings about nutrient negative balances to soil, which causes the loss of soil fertility and crop yield decline in the time span. The general objective of this study was to validate the NUTMON model of the Food and Agriculture Organization of the United Nati
Publicado em: 2008
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21. Influência do lodo de esgoto na nodulação e no desenvolvimento do Caupi (Vigna unguiculata "L" Walp)
The intense urban growth, production of domestic and industrial residues has been increased, mainly sewage sludge. This residue has high amount of pathogenic organisms and heavy metals. The viable alternative for this residue destination is its use in agriculture improving the chemical, physical and biological soil characteristics. Allied of the capacity of
Publicado em: 2007
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22. Impacts on the soil chemical characteristics and development of amaranth under saline stress and mulch / Impactos do estresse salino e da cobertura morta nas características químicas do solo e no desenvolvimento do amaranto
Availability of good quality water has been reduced vertiginously, over the last decade, in the world. In some regions, the water resources have high concentration of the dissolved salts, these characteristics of the water make its use impossible. Water quality can be a limitation for irrigated agriculture, principally in regions of arid or semiarid climate
Publicado em: 2007
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23. Desenvolvimento de mudas de cafeeiro cultivadas em tubetes e submetidas a diferentes níveis de déficit hídrico / Development of coffee seedlings cultivated in plastic tubes and submitted at different levels of hydric deficit
Coffee production is a very important activity in the socioeconomic context in Brazil, which makes billion of dollars go around the economy every year generating thousands of direct and indirect jobs. The success in the coffee production depends on the observation of several needs, among others the choice of healthy and vigorous seedlings with good genetic p
Publicado em: 2007
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24. Sistema experimental de monitoramento e controle para casas de vegetação baseado em redes de controle distribuído LonWorks. / Experimental greenhouse monitoring and control system based on LonWorks distributed control network.
Protected agriculture using greenhouses allows high quality crops and in any time of the year. The technology has a preponderant role in the control of these environments, although no always successfully. Conventional solutions, such as Programmable Logic Controllers, or systems with proprietary technology are predominant. The evolution of the communication
Publicado em: 2006