Santo André is an enclosed brackish water coastal lagoon with temporary connections to the sea by a man-made channel. The exchange and mixture of saltwater and freshwater is irregular and the lagoon may show daily and seasonal fluctuations, but also long-term variation. Different benthic communities may be present along the annual cycle according to the magnitude of episodic freshwater and sea water inputs. In ...
Irrigation is presently the main user of world´s fresh water. Most of it goes to irrigating small plots where it is not feasible to implement full-scale Evapotranspiration based irrigation controllers. The dramatic development of Programmable Logic Controllers, PLCs, and their rather affordable price has made it possible to use them as stand-alone irrigation controllers. In this paper a PLC is used to adapt ...
Most of the urban landscaped areas are watered with drinking water from the city utility. This represents a waste of energy used to pump the water all the way into urban areas, as well as a waste of chemicals and energy used to purify the water for human consumption. This paper analysis the feasibility of harvesting rainwater over buildings in Mediterranean climate, and storing them, for use in irrigation. ...
O estudo mostra que o conhecimento dos produtores e extensionistas acerca dos aspectos diferenciais do Curadermite se restringiu, praticamente, à Bahia e Sergipe, estados de maior proximidade geográfica com a Embrapa Tabuleiros Costeiros, produtora do Curadermite. Por outro lado, o esforço de divulgação da tecnologia não obteve êxito nos meios acadêmico e científico onde o curadermite é praticamente desconhecid...
Para efeitos de desenvolvimento dum sistema de rega automático, são estudados e calibrados cinco métodos de cálculo de Evapotranspiração de referência (Priestley-Taylor, Makkink, Hargreaves, Turc, Jensen-Haise) utilizando apenas os parâmetros climáticos temperatura, T, e radiação solar, Rs. O estudo envolve o cálculo da Evapotranspiração para todos os dias do ano hidrológico 2005/06 e a sua comparação com o mét...
The importance of the freshwater inflows to the estuarine and adjoining coastal waters fish communities are put in evidence and a relationship between the commercial fisheries landings and freshwater inflow is presented. For the period between 1988 and 2000, twenty-one different equations were obtained, relating fish catches landed at the Vila Real de Santo António harbor, and the freshwater flow of the River G...
Palhadas para cobertura morta na região tropical; Manejo da palhada de braquiária para o cultivo de feijão; Influência da palhada de braquiária nas plantas daninhas; Influência da palhada de braquiária no manejo de doenças do feijoeiro com origem no solo; Rendimento do feijoeiro cultivado em palhada de braquiária. ; 2003
2002
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