Nutrient Extraction
Mostrando 13-24 de 59 artigos, teses e dissertações.
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13. Macronutrient Uptake and Removal by Upland Rice Cultivars with Different Plant Architecture
ABSTRACT Modern high-yielding rice cultivars possibly take up and remove greater quantities of macronutrients than traditional and intermediate cultivars. This study was carried out with the aim of evaluating the extraction and removal of macronutrients by upland rice cultivars. These information are of utmost importance for the correct fertilizer management
Rev. Bras. Ciênc. Solo. Publicado em: 23/06/2016
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14. Cellulase activity and dissolved organic carbon release from lignocellulose macrophyte-derived in four trophic conditions
Abstract Considering the importance of lignocellulose macrophyte-derived for the energy flux in aquatic ecosystems and the nutrient concentrations as a function of force which influences the decomposition process, this study aims to relate the enzymatic activity and lignocellulose hydrolysis in different trophic statuses. Water samples and two macrophyte spe
Braz. J. Microbiol.. Publicado em: 2016-06
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15. Alkaline extraction of humic substances from peat applied to organic-mineral fertilizer production
An organic-mineral fertilizer based on humic substances (HSs) and potassium was developed based on the alkaline extraction of HSs from peat. The HSs have interesting properties for use as a fertilizer since they improve the physical and chemical structure of the soil and provide a source of organic carbon which is readily absorbable by the plants, whereas po
Braz. J. Chem. Eng.. Publicado em: 2014-09
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16. Chemical composition and antioxidant activity of jatobá-do-cerrado (Hymenaea stigonocarpa Mart.) flour
The Brazilian Savannah, known as "Cerrado," has an extensive biodiversity, but it is under explored. Among the native vegetables is the jatobá-do-cerrado (Hymenaea stigonocarpa Mart.), a legume with great potential for exploration for its content of dietary fiber. Legumes are an important source of nutrient compounds, such as phenolic compounds and vitamins
Food Sci. Technol. Publicado em: 2014-09
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17. Utilization of orange bagasse and molokhia stalk for production of pectinase enzyme
Studies were conducted on the production and extraction of exo-polygalacturonase (PG) in solid-state fermentation (SSF) using orange bagasse (Ob) and molokhia stalks (Ms) as a new solid support by Penicillium pinophlilum Hedg 3503 NRRL. The parameters affecting PG production under SSF were optimized. The maximum PG activity of ~ 3270 U/ g dry solid substrate
Braz. J. Chem. Eng.. Publicado em: 2013-09
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18. GESSO AGRÍCOLA E ADUBAÇÃO NITROGENADA NA CULTURA DO MILHO EM SISTEMA PLANTIO DIRETO
A considerably part of the high nitrogen (N) rates applied in corn is not absorbed due root growth restriction by subsoil acidity. Gypsum is able to improve conditions for root growth and lead to greater N uptake efficiency, increasing corn yield. Thus to evaluate the effect of gypsum and N on top dressing on soil chemical attributes, root growth , mineral n
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 10/11/2012
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19. DinÃmica de fÃsforo em manguezais impactados por Ãguas residuÃrias no Estado do CearÃ. / Dynamics of phosphorus in mangroves impacted by the state of CearÃ.
Recent studies demonstrated the efficacy of mangrove retaining nutrients and, in particular, the ability of the mineral component of the buffer in its high soil phosphorus levels. In general, the mangroves have been considered as important sinks of nutrients due to its high capacity purification of effluents. However, depending on the geochemical conditions
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 26/06/2012
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20. Effect of precursors feeding and media manipulation on production of novel anticancer pro-drug camptothecin from endophytic fungus
We have established methodology for the isolation and characterization of a novel endophytic fungus from the inner bark of medicinal plant Nothapodytes foetida, which produced camptothecin in Sabouraud broth (SB) under shake flask conditions. Camptothecin and its related compounds are at present obtained by extraction from intact plants, but fungal endopytes
Braz. J. Microbiol.. Publicado em: 2012-12
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21. Obtenção e propriedades de toruleno da levedura Rhodotorula glutinis / Obtaining and properties of torulene from Rhodotorula glutinis yeast
Carotenoids are natural colorants, some of which are precursors of vitamin A. Since the past decade, an important role in reducing the risk of various degenerative diseases was attributed to these compounds. With these vital functions, the search for sources has intensified worldwide. The biotechnological production of specific carotenoids, using bacteria, f
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 18/11/2011
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22. Acumulo de materia seca e de nutrientes em milho cultivado no periodo inverno-primavera.
O trabalho procurou avaliar o acumulo de materia seca e de N, P, K, Ca, Mg e Zn e a eficiencia de conversao em graos de tres cultivares de milho (BR 201, BR 106 e AG 519) no periodo inverno-primavera, em solo LVA de Prudente de Morais, MG. Os tratamentos foram dispostos em blocos ao acaso com tres repeticoes. As plantas de milho foram coletadas em 5 estadios
Pesquisa Agropecuaria Brasileira. Publicado em: 2011
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23. AcÃmulo de nutrientes em copo-de-leite em fase inicial de cultivo / AcÃmulo de nutrientes em copo-de-leite em fase inicial de cultivo / Nutrient accumulation in calla lily in its initial cropping stage / Nutrient accumulation in calla lily in its initial cropping stage
Calla lily cropping presents an important role in floriculture, but the knowledge of nutrient absorption and accumulation in the different plant developmental stages or the nutrient requirement are enough. This information allowed an adequate fertilizer application, according each physiological stage, resulting in a more cost-effective crop production. The o
Publicado em: 2009
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24. Determinação de fósforo biodisponível em rações de peixes utilizando extração assistida por ultra-som e espectrofotometria no visível
The aim of the present work was to develop and optimize a method for determination of bioavailable phosphorus in samples of feces and fish feed using ultrasound extraction and subsequent quantification by visible spectrophotometry. Using as extractor solution HNO3 0.50 mol L-1, the great conditions of extraction established were: sample mass - 100 mg, sample
Química Nova. Publicado em: 2009