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| Registros recuperados: 225 | |
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| Chopin, T; Floc'H, J; Bodeau, B; Penot, M. |
| Phosphorated nutrition of the red alga Chondrus crispus Stackh. is studied is two morphologically very dissimilar forms of the thallus. Phosphorus measurements, which were monthly carried out at different parts of the alga, showed first that the distribution of this element is not homogeneous along the thallus, and second that seasonal variations occur. It is suggested that the classical polymorphism of the species can be taken into account as concerns its physiology. Besides, from absorption and exsorption experiments which were performed with super(32)P as a tracer, it is shown that the high concentration factor of phosphorus in the alga as compared to the environmental seawater (up to 17.9 x 10 super(4)) can be explained as an effect of metabolic process. |
| Tipo: Text |
Palavras-chave: Chondrus crispus; Algae; Distribution; Metabolism; Seasonal variations; Food absorption; Phosphorus; Plant nutrition. |
| Ano: 1983 |
URL: http://archimer.ifremer.fr/doc/1983/acte-1175.pdf |
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| Carović-Stanko,Klaudija; Maloić,Mario; Pintar,Jasna; Liber,Zlatko; Radosavljević,Ivan; Bedeković,Dalibor; Guberac,Sunčica; Očić,Vesna; Lazarević,Boris. |
| Abstract The long tradition of green bean (Phaseolus vulgaris L.) cultivation in Croatia has resulted in the development of a landraces adapted to specific areas and chosen to suit different dietary habits. The hypothesis of our study was that nutritional quality (content of proteins, sugars, fibres, calcium, potassium and phosphorus in fresh pods) of 14 widely grown Croatian green bean accessions is affected by origin and morphotype. The analysed accessions were grown in non-replicated field plots where morphotypes were classified. The gene pool of adscription (Andean vs. Mesoamerican) of each accession was determined with the phaseolin marker, whereas nutritional quality traits were analysed according to standard analytical methods. The relationships... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Crude protein; Gene pool; Growth habit; Functional food; Phosphorus; Potassium. |
| Ano: 2018 |
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952018000400523 |
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| Castañeda-Castro,Odón; Gómez-Merino,Fernando C.; Trejo-Téllez,Libia I.; Pastelín-Solano,Miriam C.. |
| The potential capacity of plant roots to absorb water and nutrients generally declines in osmotic-stressed plants, presumably because of a reduction in the nutrient element demand, and such decrease varies among plant genotypes. In order to investigate the effect of the osmotic stress caused by polyethylene-glycol 6000 (PEG) on the macronutrient concentration in sugarcane (Saccharum spp.) in vitro, we established a factorial experiment with a completely randomized distribution. Study factors were variety (Mex 69-290 and CP 72-2086) and PEG in the nutrient medium (0, 3, 6 and 9 %, to generate osmotic potential corresponding to -0.18, -0.45, -0.65 and -0.80 MPa, respectively), which resulted in eight treatments, with five replicates each. The experimental... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Plant nutrition; Poaceae; PEG; Nitrogen; Phosphorus; Potassium. |
| Ano: 2015 |
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952015000800004 |
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| Bruno,Marcelo; Oliveira,Roberto A. de. |
| In this study it was evaluated the efficiency of the treatment of wet-processed coffee wastewater in upflow anaerobic sludge blanket (UASB) reactors in two stages, in bench scale, followed by post-treatment with activated sludge in batch. The first UASB reactor was submitted to an hydraulic retention time (HRT) of 6.2 d and organic loading rates (OLR) of 2.3 and 4.5g CODtotal (L d)-1, and the second UASB reactor to HRT of 3.1 d with OLR of 0.4 and 1.4g CODtotal (L d)-1. The average values of the affluent CODtotal increased from 13,891 to 27,926mg L-1 and the average efficiencies of removal of the CODtotal decreased from 95 to 91%, respectively, in the UASB reactors in two stages. The volumetric methane production increased from 0.274 to 0.323L CH4 (L... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anaerobic digestion; Methane; Nitrogen; Phosphorus; Phenols. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000400020 |
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| Pinho,Erika Katianne Costa; Costa,Ana Claudia; Vilar,Cesar Crispim; Souza,Manoel Euzébio de; Silva,Aline Borges Vilela; Oliveira,Carlos Henrique Gomes de. |
| Abstract Barueiro (Dipteryx alata Vog.), a fruit tree native to the Brazilian cerrado, has aroused the interest of producers and consumers due to its almond highly appraised and valued by local markets. To obtain quality barueiro seedlings, balanced fertilization is required, with special attention to the supply of phosphorus and nitrogen, essential for seedling growth and establishment in the field. The aim of this study was to evaluate the growth of barueiro seedlings produced with different phosphate and nitrogen concentrations in Nova Xavantina – MT. The experiment was conducted at the seedling nursery of the Mato Grosso State University (UNEMAT), Campus of Nova Xavantina - MT, from December 2017 to April 2018. The experimental design was randomized... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Baru; Phosphorus; Nitrogen; Propagation. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452019000603001 |
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| Montenegro,Adolfo; Mera,Mario. |
| The effect of P fertilization on grass pea (Lathyrus sativus L.) yield and yield components was evaluated on soils with low P availability and high P retention capacity in small-scale farms of the Araucanía Region in southern Chile. Trials were conducted during 2000-2001, 2001-2002, and 2002-2003, in six sites; three sites in Lumaco and three in the Selva Oscura area. Six rates of P (0, 21.8, 43.6, 65.4, 87.2, and 109.0 kg ha-1) were evaluated in a randomized complete block design with four replicates. Grass pea cv. Luanco-INIA was sown at 47 seeds m-2. Mean grain yield for all trials was 2456 kg ha-1. Phosphate fertilization increased grass pea grain yield in both areas during 2000 and 2001. There was no significant effect in 2002. The 2002 cropping... |
| Tipo: Journal article |
Palavras-chave: Grass pea; Phosphorus; Neglected crops; Cool-season legumes. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392009000200014 |
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| Pereira,Natanael S; Alves Júnior,Antônio Roberto; Celedônio,Wilma F; Rodrigues,Esiana A; Chaves,Sérgio WP; Medeiros,José Francismar. |
| ABSTRACT Studies on nutrient uptake are important to understand nutritional needs of crops, which demand may also be influenced by fertilization management, particularly P fertilization. Thus, the aim of this study was to evaluate macronutrient accumulation and distribution in watermelon cv. Magnum, under two forms of phosphate fertilization. The experiment was carried out in a sandy-textured Argisol in Mossoró-RN. The experimental design was a randomized block design, arranged in split plot in time, with four replicates. We evaluated dose of 137 kg ha-1 of P2O5 under two forms of fertilization [pre-planting (F0) and pre-planting + topdressing (F1)]. Triple superphosphate (SFT) was used for pre-planting applications and topdressing applications were done... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Citrullus lanatus; Nutrient accumulation; Phosphorus. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362018000300346 |
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| Cardoso,Antonio II; Claudio,Marina TR; Nakada-Freitas,Pâmela G; Magro,Felipe O; Tavares,Ana EB. |
| abstract Considering the scarce information on nutrient extraction by plants for seed production within vegetable crops, as well as the effect of fertilization over extraction, studying nutrient accumulation in different plant parts under varied fertilization rates is necessary. This study aimed to evaluate the influence of phosphate rates on macronutrient accumulation in cauliflower plants during seed production. Five phosphate rates were studied (0, 300, 600, 900 and 1200 kg/ha P2O5), in a randomized complete block design, with four replications. Accumulation of nutrients in the different plant parts was evaluated at the end of the cycle (vegetative and reproductive, the latter divided in seeds and inflorescence). Data were submitted to analysis of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brassica oleracea var. botritys; Phosphorus; Mineral nutrition.. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362016000200196 |
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| Silva,Luiz C. da; Lucchesi,Luiz A. C.; Koehler,Henrique S.; Campos,Milton C. C.. |
| This study aimed to evaluate the extractable phosphorus Mehlich-1 in a distrophic Red-Yellow Latosol (Oxisol) which received alkaline sewage sludge (alkaline biosolid) along with 0, 0.436, 0.872 and 1.745 dag kg-1 of P from three different sources and cultivated with common bean (Phaseolus vulgaris cv. IPR Uirapuru) in greenhouse. It also aimed to quantify the phosphorus uptake by the plant, plant production and the relative agronomic effectiveness index. For the establishment of the treatment the recommended dose was 45.85 kg ha-1 of P from the treatments, except the control (0 dag kg-1 of P). This dose was calculated for 2.5 kg of this Oxisol from Contenda, Paraná State, Brazil, contained in recepients of 3 dm3 with 6 cultivated bean plants (cv. IPR... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phosphorus; Dose; Grains; Dry mass; Phaseolus vulgaris. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662012001200001 |
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| Luchese,Eduardo Bernardi; Lenzi,Ervim; Favero,Luzia Otília Bortotti; Loubak,Luceide Heloisa. |
| Phosphorus collectors made from filter paper and synthetic cloth, were tested to evaluate their feasibility of determining the need for phosphate application. The collectors were coated with two types of oxides, iron oxide and aluminium oxide. The capacity of the collectors was tested by placing them in a 2 mL of solution containing phosphorus (PO4(3-)) in the concentration of 0.0, 1.00, 3.00, 5.00, 7.00, 9.00 and 11.00 µ g.mL-1, respectively, after which they were placed in contact with four types of soil (LBa, LRd, LEd and Ca) and incubed for 0.0 and 24 h. In this test the soils were kept at a humidity equivalent to 150 mmHg suction. The amount of phosphorus extracted from the solutions was tested at intervals between 0,0 and 11.0 µ g of phosphorus/mL.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phosphorus; Phosphorus availability; Phosphorus diffusion; Phosphorus extraction. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132000000200006 |
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| Fuentes,Bárbara; Bolan,Nanthi; Naidu,Ravi; Mora,María de la Luz. |
| Increases in the generation of organic wastes, in addition to decreases in natural resources, make it necessary to recycle these waste materials. In soils, the application of wastes as organic fertilizers, allows to reincorporate nutrients to the biogeochemical cycles. The application of wastes in agriculture has carried out with it problems associated with phosphorus (P) overapplication in soils and contamination of water bodies. Phosphorus inside the waste matrix forms organic and inorganic compounds which have different bioavailabilities. The more important factors that influence the bioavailability of P in soils, organic wastes and soil-organic waste amendments are: the soil solution pH, adsorption reactions, organic matter, phosphatase activity and... |
| Tipo: Journal article |
Palavras-chave: Phosphorus; Bioavailability; Compost; Manure. |
| Ano: 2006 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-27912006000200006 |
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| LOUVANDINI,H; VITTI,D.M.S.S. |
| The main objective of the present work was to determine the effects of different dietary phosphorus (P) levels on endogenous faecal loss and to estimate the minimum daily requirement of P for sheep. The study was conducted with 24 Suffolk sheep which received a basic diet consisting of hay-concentrate mixture. The treatments consisted of different amounts of bone meal, added to the basic diet, so as to obtain supplementary P levels of 0, 1, 2 and 3g/day. Twenty-one days after the introduction of the experimental diet, 7.4 MBq radioactive P (32P) was injected into the left jugular vein of each sheep and blood, faeces and urine samples were collected daily for 8 days at 24-hour intervals. The samples were analysed for inorganic P and for radioactive specific... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phosphorus; Sheep; Nutrition. |
| Ano: 1996 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90161996000100027 |
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| Lima,Ronaldo Lima de; Enke,Dariane Beatriz Schoffen; Braun,Neiva; Fracalossi,Débora Machado. |
| Fish meal is widely included in animal feed because it contains ideal essential amino acids profile, it is rich in energy, essential fatty acids, vitamins and minerals and with >80% apparent protein digestibility in peneid shrimp. In human nutrition, studies are investigating the inclusion of fish meal in snacks, cakes, breads and cookies, as an enrichment in calcium, phosphorus, iron, protein and, especially, omega-3 fatty acids. Omega-3 fatty acids reduces heart diseases and have antithrombotic and anti-inflammatory properties (eicosapentaenoic acid), and are essential to the formation of brain tissue and retina in infants and are important during pregnancy and lactation (docosahexaenoic acid). Fish meal produced from fish waste is rich in minerals... |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Phosphorus; Fish waste meal; Fractionation; Sieves.. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782014001001841 |
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| Peres,Amanda Ribeiro; Vazquez,Gisele Herbst; Cardoso,Renata Danielle. |
| The effect of mixture of seeds of Brachiaria brizantha, cv. Marandu, with different sources, granulometry, and phosphatic fertilizer doses during various periods of exposure on the physiological potential of the seeds has been assessed. The treatments consisted in seed exposure during periods of 0, 3, 6, 12, 24, 36, 48, 72, 96, and 120 h to the following fertilizers: ground granulated single superphosphate (SS), and powdered (SSp); and ground granulated ammonium monophosphate (AMP), at doses of 40 and 80 kg P2O5 ha-1. Tests of germination, tetrazolium, moisture content, and vigor (first count, electrical conductivity, emergence, emergence speed, and fresh mass of seedlings) were performed. It has been concluded that seed physiological potential of B.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phosphorus; Seed-fertilizer mixture; Exposure period; Vigor. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-31222012000300009 |
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| Moreira,José Aparecido; Vitti,Dorinha Miriam Silber Schmidt; Trindade Neto,Messias Alves da; Lopes,João Batista. |
| Organic phosphorus is poorly utilized by monogastric animals because they lack phytase, the enzyme that cleaves the ortho-phosphate groups from the phytate molecule. Diets fed to pigs are supplemented with inorganic P, and this can increase environmental pollution and diet costs. Sixty mixed sex, half-breed pigs, were used to evaluate the effect of increasing dietary levels of phytase (253, 759, 1265 and 1748 PU kg-1 feed) on animal performance as compared to a control without phytase but supplemented with dicalcium phosphate. Enzyme levels did not affect daily feed intake, food conversion, average daily weight gain, plasma P and Ca, calcium and phosphorus in bone ash, and the calcium/phosphorus ratio in the plasma and bones. A quadratic relationship... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Environmental pollution; Nutrition; Performance; Phosphorus; Phytate. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000400004 |
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| Registros recuperados: 225 | |
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