Evaluation of calcium absorption by 'yellow' melon with green manure use in the Brazilian Semiarid.

The objective was to evaluate the absorption curve and the calcium contribution by green manure in the development of yellow melon produced in the Brazilian Semiarid region

Cover crop cocktails as N and P source in the Brazilian Semiarid.

The objective was to evaluate the availability of N and P by plant cocktails used as cover crop and green manure in the semiarid

Nitrate in soil solution with use of plant cocktails as green manure in diferent tillage systems in the brazilian semi-arid

Tillage systems strongly affect nutrient transformations and plant availability. The objective of this study was to assess the nitrate dynamic in soil solution in different tillage systems with use of plant cocktail as green manure in fertilized melon (Cucumis melon) in Brazilian semi-arid. The treatments were arranged in four blocks in a split-plot design and included three types of cover crops and two tillage systems, conventional tillage (CT) and no-till (NT). The data showed no strong effect of plant cocktails composition on NO3-N dynamic in the soil. Mean concentration of NO3-N ranged from 19.45 mg L-1 at 15 cm to 60.16 mg L-1 at 50 cm soil depth, indicating high leachability. No significant differences were observed between NT and CT treatments for 15 cm depth. The high soil moisture content at ~ 30 cm depth concentrated high NO3-N in all treatments, mean of 54.27 mg L-1 to NT and 54.62 mg L-1 to CT. The highest NO3-N concentration was observed at 50 cm depth in TC (60.16 mg L-1). High concentration of NO3-N in CT may be attributed to increase in decomposition of soil organic matter and crop residues incorporated into the soil

Demographic aspects of agricultural development: Brazil, 1950-1974.

The Brazilian economy has been expanding at a reasonably high rate for a fairly long period (Table 1). It had one of the higher rates of growth in the world in the period 1950-74, during which the gross domestic product expanded at an average rate of 7.1 pxcent2. The economy lost i t s impetus for growth in the early 1960's, and in 1963 the growth in gross domestic product per capita was actually negative3. ln that year Brazil experienced an annual rate of inflation equal to 92 percent

Introdução e avaliação de forrageiras no município de Santana do Araguaia, Estado do Pará.

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Resposta de pastagem degradada de capim-colonião a consorciação com leguminosas e fertilização com fósforo, enxofre e micronutrientes.

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Characterization of Brazilian table wines from american varieties

The Brazilian wine industry has a remarkable characteristic that distinguishes from other markets. While the foreign market only accepts products originating from European cultivars (cv) (Vitis vinifera), in Brazil, products originating from American cv (Vitis labrusca and Vitis bourquina) and hybrids are also accepted. Dry and sweet varietal wines from red grapes cv Bordô, Isabel and Máximo and white grapes cv Niágara and Lorena were analyzed, by the following chemical standard analyses: total, volatile and fixed acidity; ethanol content; density; pH; dry and reduced dry extract; ratio ethanol/reduced dry extract; reducing sugars; total and free sulfur dioxide. Additionally, major volatile compounds were analyzed by gas chromatography, directly, without any previous treatment, after the addition of the internal standard (4-nonanol).A indústria de vinho brasileira tem uma característica notável que a distingui dos outros mercados. Enquanto o mercado estrangeiro só aceita produtos originários das cultivares (cv) européias (V. vinifera), no Brasil, produtos originários das cv americanas (V. labrusca e V. bourquina) e híbridos também são aceitos. Vinhos varietais secos e suaves das uvas tintas das cv Bordô, Isabel e Máximo, e das uvas brancas das cv Niágara e Lorena foram avaliados pelas seguintes análises químicas: acidez total, volátil e fixa; teor alcoólico, massa volúmica, pH, extrato seco total e reduzido; relação álcool em peso/extrato seco reduzido, açúcares redutores; dióxido de enxofre total e livre. Adicionalmente, os compostos voláteis maioritários foram avaliados por cromatografia gasosa, diretamente, sem qualquer tratamento prévio, após a adição do padrão interno (4-nonanol)

Vinhos de mesa varietais de uvas americanas: análises químicas e energética

A indústria brasileira de vinhos tem uma característica notável que a distingui dos outros mercados. Enquanto o mercado estrangeiro só aceita produtos originários das variedades europeias (V. vinifera), no Brasil, produtos originários das variedades americanas (V. labrusca e V. bourquina) e híbridos também são aceitos. Vinhos varietais secos e suaves das variedades Bordô (seco e suave), Isabel (suave) e Máximo (seco), foram avaliados pelas seguintes determinações químicas: teor alcoólico; densidade; extrato seco total e reduzido; relação álcool em massa/extrato seco reduzido, açúcares redutores; acidez total, volátil e fixa; pH; dióxido de enxofre total e livre; e valor energético. Todos os vinhos analisados apresentaram resultados dentro dos parâmetros estipulados pela legislação brasileira, fato positivo, uma vez que são comercializados. O vinho varietal Máximo apresentou um teor baixo de dióxido de enxofre livre e total, podendo acarretar problemas futuros com sua sanidade.The Brazilian wine industry has a remarkable characteristic that distinguishes from other markets, while the foreign market only accepts products originating from European varieties (Vitis vinifera), in Brazil, products originating from American varieties (Vitis labrusca and Vitis bourquina) and hybrids are also accepted. Dry and sweet varietal wines from varieties Bordô (dry and sweet), Isabel (sweet) e Máximo (dry) were analyzed, by the following chemical standard analyses: alcohol content; density; total and reduced dry matter; alcohol/reduced dry extract ratio; reducing sugars; total, volatile and fixed acidity; pH; total and free sulfur dioxide; and energy value. All analyzed wines presented results within the parameters set forth by Brazilian law, a positive fact, once they are commercialized. The varietal wine Máximo presented a low content of total and free sulfur dioxide, which may cause future problems with its sanity.info:eu-repo/semantics/publishedVersio

Métodos integrados de controle de plantas invasoras em pastagem cultivada de quicuio-da-amazônia (Brachiaria humidicola), na região de Paragominas, Pará.

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