Were noted in this study the effects of increasing doses and different nitrogen sources in the production, chemical composition and the N contained in the shoots of millet forage conditions in the Bioma Cerrado. Two N sources (urea and Novatec), four doses (0, 40, 80 and 160 kg ha-1 ) and three cuts with four replicates totaling 32 experimental units were used. The cuts were made assessment when at least 50% of the plants reached 0.80 m in height. The variables analyzed were GMP, DMP, DM, CP, NDF, ADF and CN of all cuts. There was no significant interaction between the variables analyzed for sources and rates of N, N and cuts, cuts and sources of N and also the triple interaction sources, cuts and N. The dose of GMP was higher than the second and third (1691 and 1862 kg ha-1 , respectively) that differed from the first cut (1362 kg ha-1 ). The MS was statistically different from the third (15.44%) and similar cutting the first and second sections (12.30 and 13.08%, respectively). The CP content significantly in all courts where the first cut differed from the second cut and third cut differed from the others. The NDF and ADF differed between cuts, rising as the cuts progressed. The two N sources are suitable for supplying N to growing millet.
The objective of this work was to report a value of potassium fertilization for the plants, with a maize crop (pennisetum glaucum) that appeared 4,000 and 5,000 years BC south of the Sahara desert, being widely used in animal feed, with one Wide use in the mid-west region, with a soil cover function for the direct flat system. However, this culture is dependent on the use of biochemistry that has an effect on the activation of various enzymatic systems, which involves the processes of photosynthesis and respiration of the plant, also depicting how it is an absorption of nutrients and their functions in the plant.
A água é um recurso natural de extrema importância para a humanidade, sendo indispensável na maioria dos sistemas de produção global e principal fonte de hidratação humana, porém a água com baixa qualidade (contaminada por micro-organismos ou substâncias tóxicas) é uma das principais causas de mortalidade no mundo, principalmente a infantil e está ligada diretamente à transmissão de várias doenças. O objetivo deste trabalho foi descrever o panorama atual das pesquisas acerca da análise de qualidade de água no Brasil. Trata-se de uma revisão bibliográfica com análise a partir de pesquisas sobre as legislações vigentes para uso e comercialização de água mineral envasada. Para as buscas utilizou-se os seguintes descritores e seus correlatos em língua inglesa: “água mineral” e “análise de água”. Para os critérios de inclusão, definiu-se: artigos originais, dissertações de mestrado e teses de doutorado dos últimos 5 anos. Os critérios de exclusão foram: artigos de revisão, disponíveis apenas o resumo, estudos em outros idiomas, editoriais e carta aos editores. Foram utilizados como meio de pesquisa os periódicos da Capes, Scielo e Google Acadêmico. Os resultados das pesquisas encontraram 57 estudos, sendo 44 artigos únicos no total (CAPES = 23; Scielo = 5; Google Scholar = 29), dos estudos analisados 07 foram considerados dentro dos conformes para consumo, 23 deles em desconformidade para o consumo e 14 não abordavam diretamente a análise de água. Há necessidade de ampliação da vigilância sanitária sobre a comercialização de água mineral envasada, pois ainda ocorrem muitas contaminações.
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