Rendimento de grãos de milho cultivado em consórcio com adubos verdes sob condições de baixa aplicação de insumos.

A demanda de diferentes segmentos de produtores rurais, especialmente agricultores familiares, por tecnologias de baixo custo econômico e sistemas de manejo conservacionistas, tem destacado a importância do desenvolvimento de atividades com foco na segurança alimentar. Neste sentido, o presente estudo teve como objetivo avaliar o rendimento de grãos da cultura do milho, quando consorciada com diferentes espécies de adubo verde, sob condições de baixa aplicação de insumos. Foram conduzidos ensaios em duas áreas de comunidades indígenas de Mato Grosso do Sul, nos municípios de Miranda e Nioaque. Em ambos os ensaios, os monocultivos de milho foram comparados com os consórcios estabelecidos com as seguintes espécies de adubo verde: guandu (Cajanus cajan L. Millsp), crotalária (Crotalaria juncea), feijão-de-porco (Canavalia ensiformis) e mucuna-preta (Mucuna aterrina). Os rendimentos da cultura do milho em consórcio com as espécies de guandu e crotalária, em Miranda, e com guandu, crotalária e feijão-de-porco, em Nioaque, mostraram-se superiores ao monocultivo de milho. Em Nioaque, os rendimentos de milho consorciado com crotalária e guandu foram, respectivamente, 4 e 3,5 vezes superiores ao monocultivo. Em Miranda, MS, os patamares de produtividade do milho foram mais elevados do que no ensaio conduzido em Nioaque, MS, com variação entre 2.843 (monocultivo) e 4.751 kg ha-1 (consórcio com guandu). O Índice de Equivalência de Área (IEA), utilizado para comparação entre os consórcios e monocultivo de milho, indicou que os consórcios de milho com guandu, crotalária, feijão-de-porco e mucuma-preta, em ambos os locais avaliados, representam uma prática de grande vantagem do ponto de vista agronômico. De modo geral, os resultados demonstraram que a utilização dos adubos verdes como uma estratégia de manejo para conservação da qualidade do solo pode ser considerada uma prática promissora na unidade de produção, em áreas com baixa aplicação de insumos.bitstream/item/67081/1/BP201261-1.pd

Opções para diversificação na segunda safra.

bitstream/item/115384/1/p.-53-62.pd

Recomendação e nível de adoção de tecnologias agrícolas em Mato Grosso do Sul.

Tecnologias recomendadas pela assistência técnica; Aspectos da Assistência técnica aos produtores; Nível de adoção das tecnologias; Sugestões de temas para pesquisa e difusão (demandas), por ordem de citação.bitstream/item/65721/1/DOC35.pdfDocumento online

Estimativa do custo de produção de café em Mato Grosso, em 2004.

bitstream/item/24694/1/COT200598.pdfDocumento on-line

Dynamic Fluctuation Phenomena in Double Membrane Films

Dynamics of double membrane films is investigated in the long-wavelength limit including the overdamped squeezing mode. We demonstrate that thermal fluctuations essentially modify the character of the mode due to its nonlinear coupling to the transversal shear hydrodynamic mode. The corresponding Green function acquires as a function of the frequency a cut along the imaginary semi-axis. Fluctuations lead to increasing the attenuation of the squeezing mode it becomes larger than the `bare' value.Comment: 7 pages, Revte

AMACO is a component of the basement membrane-associated fraser complex

Fraser syndrome (FS) is a phenotypically variable, autosomal recessive disorder characterized by cryptophthalmus, cutaneous syndactyly, and other malformations resulting from mutations in FRAS1, FREM2, and GRIP1. Transient embryonic epidermal blistering causes the characteristic defects of the disorder. Fras1, Frem1, and Frem2 form the extracellular Fraser complex, which is believed to stabilize the basement membrane. However, several cases of FS could not be attributed to mutations in FRAS1, FREM2, or GRIP1, and FS displays high clinical variability, suggesting that there is an additional genetic, possibly modifying contribution to this disorder. An extracellular matrix protein containing VWA-like domains related to those in matrilins and collagens (AMACO), encoded by the VWA2 gene, has a very similar tissue distribution to the Fraser complex proteins in both mouse and zebrafish. Here, we show that AMACO deposition is lost in Fras1-deficient zebrafish and mice and that Fras1 and AMACO interact directly via their chondroitin sulfate proteoglycan (CSPG) and P2 domains. Knockdown of vwa2, which alone causes no phenotype, enhances the phenotype of hypomorphic Fras1 mutant zebrafish. Together, our data suggest that AMACO represents a member of the Fraser complex

Three-dimensional coherent X-ray diffraction imaging of a ceramic nanofoam: determination of structural deformation mechanisms

Ultra-low density polymers, metals, and ceramic nanofoams are valued for their high strength-to-weight ratio, high surface area and insulating properties ascribed to their structural geometry. We obtain the labrynthine internal structure of a tantalum oxide nanofoam by X-ray diffractive imaging. Finite element analysis from the structure reveals mechanical properties consistent with bulk samples and with a diffusion limited cluster aggregation model, while excess mass on the nodes discounts the dangling fragments hypothesis of percolation theory.Comment: 8 pages, 5 figures, 30 reference

Agricultural soybean and corn calendar based on moderate resolution satellite images for southern Brazil.

Abstract. Knowledge of the agricultural calendar of crops is essential to better estimate and forecast the cultivation of large-scale crops. The aim of this study was to estimate sowing date (SD), date of maximum vegetative development (DMVD), and harvest date (HD) of soybean and corn in the state of Paraná, Brazil. Dates from 120 farms and the Enhanced Vegetation Index (EVI) from the Moderate Resolution Imaging Spectroradiometer (MODIS) from 2011 to 2014 were used into a seasonal trend analysis to obtain soybean and corn seasonal patterns. The results indicate that the majority soybean is sown during October and the DMVD occurs between the second ten-day period of December and the first ten-day period of January. Owing to the spatial variability of the SD, the difference in the maturation cycles of the cultivars, and regional climatic variation, the HD of soybean varied greatly during the studied crop years, ranging from mid-February to late March. The SD of corn is before that of soybean, and mainly occurs in late September to mid-October. The DMVD mainly occurs during December, and the HD is distributed throughout January to March in Paraná. When comparing the estimated dates with observed dates the mean error (ME) varied from 0.2 days earlier to 3.3 days after the observed date for soybean with root mean square error (RMSE) from 1.93 to 14.73 days. For corn, the ME varied from 10.3 days to 18.5 days after the observed date with RMSE from 18.02 to 27.82 days.Suplemento 1