Nitrogen Leaf Level
Mostrando 13-24 de 56 artigos, teses e dissertações.
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13. FORAGE INTAKE AND PERFORMANCE OF SHEEP GRAZZING Cynodon dactylon var. dactylon UNDER DIFFERENT ALLOWANCES OF LEAF LAMINA / CONSUMO E DESEMPENHO DE OVINOS MANTIDOS EM PASTAGEM DE Cynodon dactylon var.dactylon COM DIFERENTES NÍVEIS DE OFERTA DE LÂMINAS FOLIARES VERDES
The effect of different allowances (3, 6, or 9 kg of dry matter (DM)/100 kg of body weight (BW)) of leaf lamina (ALL) on the traits of a bermudagrass pasture Cynodon dactylon var. dactylon) and on the performance of sheep was evaluated. The experiment was conducted in five periods of 28 days, from october 2008 to february 2009, in a fully randomized arrangem
Publicado em: 2010
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14. Leaf relative chlorophyll content as an indicator parameter to predict nitrogen fertilization in maize / Teor relativo de clorofila na folha como parâmetro indicativo para predição da necessidade de adubação nitrogenada em milho
O medidor portátil de clorofila SPAD 502, que permite leituras instantâneas da intensidade da cor verde da folha (valor correspondente ao teor de clorofila) sem destruí-la, surgiu como uma alternativa para avaliar o nível de N na planta. Com o objetivo de determinar os valores adequados da leitura SPAD, em quatro estádios de desenvolvimento da planta de
Publicado em: 2010
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15. Germinação e produção de compostos fenólicos em plantas de Talinum triangulare (Jacq.) Willd (Portulacaceae) tratadas com homeopatia / Germination and production of phenolic compounds in plants of Talinum triangulare (Jacq.) Willd (Portulacaceae), treated with homeopathy
Talinum triangulare (Jacq.) Willd (Portulacaceae), a Brazilian specie of annual cycle, is used as food and in traditional medicine as a laxative, healing and in the treatment of measles and diabetes. Found in tropical environments, it is well adapted to hot and humid climate, and low soil fertility. The specie spreaded by seed and grows spontaneously, especi
Publicado em: 2010
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16. Fluxo de biomassa, produÃÃo de forragem e composiÃÃo quimico-bromatolÃgica do capim-mombaÃa sob adubaÃÃo e irrigaÃÃo / Flow of biomass, production of fodder plant and composition chemistry-bromatolÃgica of capim-mombaÃa under fertilization and irrigation
This work was carried out to evaluate the effects of different irrigation levels and rates of nitrogen on the morphogenetic and structural characteristics, yield production and the composition chemical-bromatologic of mombaÃagrass (Panicum maximum cv. MombaÃa). The study was conducted in the period from August to December 2007 on Unit Research of EMBRAPA M
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 27/02/2009
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17. Caracterização da capacidade fotossintética e da condutância estomática em sete clones comerciais de Eucalyptus e seus padrões de resposta ao déficit de pressão de vapor / Photosynthetic capacity and stomatal conductance characterization for seven commercial Eucalyptus clones and their variation due to vapor pressure deficit
This study aimed to characterize the physiological variables related to photosynthesis, in seven commercial Eucalyptus clones with high productivity, by evaluating maximum photosynthetic capacity (Amax), and the response of photosynthesis (A), stomatal conductance (gs) and transpiration (E) to Vapor Pressure Deficit (VPD). A trial was installed in 2004, at E
Publicado em: 2009
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18. Acúmulo e remobilização de NO3 - e eficiência de uso de nitrogênio em variedades tradicional e melhorada de arroz (Oryza sativa L.). / Accumulation and remobilization of NO3 - and efficiency in the use of nitrogen in traditional and improved varieties of rice (Oryza sativa L.).
The dynamics of accumulation and remobilization of NO3 -related protein content of the grains was studied in two varieties of rice, Piauí (traditional state of Maranhão) and IAC- 47 (enhanced by research institutions). The experiment was conducted in a greenhouse of UFRuralRJ in the period August 2006 to February 2007, with a completely randomized design w
Publicado em: 2008
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19. Efeito de práticas silviculturais sobre a produtividade primária líquida de madeira, o índice de área foliar e a eficiência do uso da luz em plantios de restauração da Mata Atlântica / Effects of silvicultural practices on wood net primary production, leaf area index and light use efficiency of Atlantic Forest restorations
The purpose of this study was to indentify the most appropriated restoration model by manipulating floristic composition and silvicultural practices, and to understand how the best development was explained by the factors that controls light use and light use efficiency at the canopy. A "Restoration models for Atlantic Forest disturbed lands aiming carbon se
Publicado em: 2008
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20. Crescimento, acúmulo de nutrientes e fixação biológica de nitrogênio em Flemingia macrophylla [(Willd.) Merril]. / Growth, nutrient accumulation and biological nitrogen fixation in Flemingia macrophyla [(Willd.) Merril].
Flemingia macrophylla is an underexploited Asian legume shrub in Brazil. International literature emphasizes its high potential as component in agroforestry systems in various regions of the tropics. The objective of this dissertation is to evaluate the potential of Flemingia macrophylla as an alternative green manure to be included in agroecological based s
Publicado em: 2008
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21. ESTIMATE OF NUTRITIONAL STATE OF FLOODED RICE / ESTIMATIVA DO ESTADO NUTRICIONAL DE ARROZ IRRIGADO POR ALAGAMENTO
The difficulty to predict the intensity of soil properties alterative by soil flooding frequently makes the interpretation of the soil analysis results inaccurate when considering nutrients availability to the plants. Complementary methods of soil analysis, as leaf tissue analysis, chlorophyll meter and the leaf color chart can be used in order to estimate p
Publicado em: 2007
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22. Nitrogen fertilizer management criteria for potato in two planting seasons / Critérios para o manejo da adubação nitrogenada da batata em duas épocas de plantio
The objectives of the thesis were: a) to establish the leaf SPAD critical level; b) to quantify pre-planting and sidedress nitrogen (N) rates to obtain the maximum commercial potato yield; c) to determine the productivity, profitability, N use efficiency and morfo-anatomical characteristics of the potato fourth leaf in relation to N fertilizer management cri
Publicado em: 2007
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23. Cytokinin in anatomical, cytological and physiological processes during in vitro culture and aclimatization of Annona glabra L. / Citocininas nos processos anatÃmicos, citolÃgicos e fisiolÃgicos durante o cultivo in vitro e aclimatizaÃÃo de Annona glabra L.
Annona glabra L. is one of the most important wild annonaceae with a high potential to produce fruits and pharmacological compounds. In vitro cultivation is a viable alternative for large scale production of plantlets of this species, overcoming the natural constraints for its propagation. However, its use in a broad form has been limited by the difficulty t
Publicado em: 2006
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24. Growing and productivity of the melon tree under different levels of water and doses of Nitrogen and Potassium / Crescimento e produtividade do meloeiro sob diferentes lâminas de água e doses de Nitrogênio e Potássio
In the northeastern semi-arid the potentialities for the irrigated cultivation of fruits, by the peculiarities of constant luminosity and temperature almost the whole year around. The cultivation of the melon tree has expressive representativity in the guide lines of the exportation of fruits. For that matter, this study had as objective to evaluate the grow
Publicado em: 2006