The reality of global climate changes creates the necessity of predicting how will be the climatic scenario in our planet and how it will affect the economic activities in the future. For some climatic variables the global climate models projections…

Soil amendment with pyrogenic organic matter (PyOM) can sequester carbon, increase mutualistic root symbioses with arbuscular mycorrhizal fungi and nitrogen-fixing rhizobia, and hence improve crop yield. However, there is still a gap in our knowledge about the effects of PyOM…

This review discusses the present trends in studies on the impacts of climate change on plant diseases. Firstly, the approaches used for studying the potential effects of altered temperature, water availability, CO2 and O3 air concentrations, and UV-B radiation on…

Local communities are important stakeholders in resource management and conservation efforts, particularly in the developing world. Although evidence is mixed in suggesting that these resident stakeholders are optimal forest stewards, it is highly unlikely that large tracts of tropical forests…

The etiology and epidemiology of Pythium root rot in hydroponically-grown crops are reviewed with emphasis on knowledge and concepts considered important for managing the disease in commercial greenhouses. Pythium root rot continually threatens the productivity of numerous kinds of crops…

Embrapa is the Brazilian Agricultural Research Corporation. It coordinates the national agricultural research system in Brazil and has for mission to provide solutions for the sustainable development of Brazilian agribusiness through knowledge and technology transfer. As such, it is involved…

2009, Autores: Jorge Blajos, Patrick Lavelle, Dalva M. da Mota, Lucia Pitalluga, Sergio Salles Filho, Jorge Irán Vásquez.

A produção animal nos ecossistemas do semi-árido é influenciada pela variabilidade espacial e interanual da oferta quantitativa e qualitativa de recursos forrageiros. A dinâmica da acumulação de fitomassa para a maioria das diferentes espécies da caatinga é pouco conhecida, o…

In this text a look at the research is presented as to the importance of the edaphic-environmental knowledge and monitoring of the soil-water management and natural resources conservtion practices, seeking to the water recharge. Furthermore, this chapter contains preliminary results…

O uso combinado do processo de desenvolvimento de sistema baseado em conhecimento com modelo de ciclo de vida espiral e a adoção de técnicas de especificação de requisitos de software nas etapas de implementação da interface do sistema baseado em…