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Abstract: Expansion of agriculture in the Brazilian Amazon has been driven not just by demands from traditional, rural producers, but also large agriculture and cattle producers, both of whom have put considerable pressure on remaining forests and their watersheds. Monitoring of these w...
Abstract: There is a popular myth or fallacy based on the idea that organic fruits and vegetables are always more expensive than conventional products. To assess whether this statement is true, a qualitative and quantitative research was conducted between September and December 2017,&#x...
Abstract: The incorporation of organic matter to the soil not only improves nutrient content, but also reduces the survival of Stenocarpella, the causal agent of stalk rot, Diplodia ear rot, and grey leaf spot, in maize stubble. We evaluated the effect of organic waste incorpo...
Resumo: Este trabalho avaliou a dinâmica populacional de Helicoverpa armigera Hübner (Lepidoptera: Noctuidae) por simulação numérica em algodão CNPA-293 RF e trigo BR- 18. Esse inseto exótico, polífago, foi detectado no Brasil na safra 2012/2013, causando grande impacto nas produtividades de...
Abstract: Remote sensing (RS) technology is a viable complementary alternative to current agriculture surveying methods. RS data spectral information is the main variable used for several purposes, such as crop type identification. However, different management practices (MP) adopted in crop cult...
Abstract: Biochar-based nitrogen fertilizers provide productivity and efficiency of nitrogen use gains, but knowledge is scarce about the residual effect for subsequent crops. We evaluated the residual effect of biochar-based nitrogen fertilizers formulated with urea and charcoal fines residues from&#...
Resumo: Este artigo apresenta a influência dos sistemas agropecuários sobre os fluxos hidrogeoquímicos em águas fluviais de dezoito microbacias sob diferentes usos da terra na Amazônia Oriental. O Nordeste Paraense é uma das mais antigas áreas de colonização agrícola da Amazônia Oriental...
The increase of atmospheric CO2 should result in higher carbon fixation by plants of the C3 photosynthetic cycle, such as coffee. However, not much is known about the relationship between atmospheric CO2 increase, higher carbon fixation through photosynthesis and the potential carbon se...
Abstract: Problem formulation is the formal opening stage of a risk assessment that determines its purpose and scope and hence guides the gathering of information data. The concepts of familiarity and history of safe use are an integral part of problem formulation. These concepts&#...
Abstract: During the pyrolysis process for biochar production there is the stabilization of C in aromatic compounds, which accredits biochar to function as an input for C sequestration in the soil. The aim of this study was assessing of C sequestration potential through pyrolyzed&#...