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Registros recuperados: 235
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A cana-de-açúcar na Transamazônica, PA: resultados de 8 anos de pesquisa, 1974/82. Infoteca-e
POLTRONIERI, L. S.; ROCHA, A. C. P. N. da; COSTA, M. S..
bitstream/item/57751/1/Altamira-Doc5.pdf
Tipo: Documentos (INFOTECA-E) Palavras-chave: Cana-de-açúcar; Cultivar; Sacharum officinarum; Transamazônica; Pará; Brasil; Sugar cane; Fertilizer; Yield; Variety.; Adubação; Fósforo; Pesquisa; Produtividade.; Amazonia; Phosphorus; Research..
Ano: 1982 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/383049
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Addressing the measurement of particulate organic and inorganic phosphorus in estuarine and coastal waters ArchiMer
Labry, Claire; Youenou, Agnes; Delmas, Daniel; Michelon, Pascale.
The speciation of particulate phosphorus (TPP) into inorganic (PIP) and organic phosphorus (POP), has been scarcely investigated in suspended particulate matter (SPM), contrary to numerous sediment studies. This work evaluates the actual capacity of methods for TPP, POP and PIP determination in SPM to measure efficiently and specifically each pool. Methods were tested on a range of plankton-associated organic and inorganic P compounds, on microalgal cultures and estuarine samples. Then results are specifically discussed reviewing P speciation in phytoplankton. For TPP analysis, the method of Solorzano and Sharp (1980) is recommended compared with that of Aspila et al. (1976), originally dedicated to sediment, as there is one step less, the protocol is more...
Tipo: Text Palavras-chave: Phosphorus; Speciation; Waters; Phytoplankton; HTC; CWO.
Ano: 2013 URL: http://archimer.ifremer.fr/doc/00149/26046/26385.pdf
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Adubação do tomateiro rasteiro no submédio São Francisco. Infoteca-e
FARIA, C. M. B. de; PEREIRA, J. R.; COSTA, N. D.; SOARES, J. M.; PINTO, J. M..
O objetivo desse trabalho foi fazer uma apresentação e avaliação dos aspectos técnicos relacionados à prática da adubação associada ao relato e à discussão de resultados de pesquisas obtidos com o tomateiro no Submédio São Francisco.
Tipo: Circular Técnica (INFOTECA-E) Palavras-chave: Tomate rasteiro; Macronutriente; Submédio São Francisco; Sulphur; Micronutrients; Tomato.; Tomate; Adubação; Cálcio; Enxofre; Fósforo; Magnésio; Lycopersicon Esculentum; Nitrogênio; Potássio.; Fertilizer application; Calcium; Magnesium; Nitrogen; Phosphorus; Potassium; Tomatoes..
Ano: 2000 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/134212
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Adubação do tomateiro rasteiro no submédio São Francisco. Infoteca-e
FARIA, C. M. B. de; PEREIRA, J. R.; COSTA, N. D.; SOARES, J. M.; PINTO, J. M..
Introdução; Solo; Absorção de nutrientes; Adubação e função dos nutrientes na colheita; Nitrogênio; Fósforo; Potássio; Cálcio; Micronutrientes; Conlusões; referências bibliográficas.
Tipo: Circular Técnica (INFOTECA-E) Palavras-chave: Macronutriente; Brasil; Submédio São Francisco; Sulphur; Micronutrients.; Adubação; Cálcio; Enxofre; Fósforo; Lycopersicon Esculentum; Magnésio; Nitrogênio; Potássio; Tomate.; Fertilizer application; Brazil; Calcium; Magnesium; Potassium; Phosphorus; Nitrogen; Tomatoes..
Ano: 2000 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/510594
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Adubação orgânica e mineral na cultura do melão em um vertissolo do Submédio São Francisco. Infoteca-e
FARIA, C. M. B. de; PEREIRA, J. R.; POSSIDIO, E. L. de.
Determinacao de niveis adequados de adubacao N, P e K na cultura do melao e verificar sua resposta a aplicacao de materia organica.
Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Eldorado 300; Fertilização; Organic fertilizer; Manure; Melon.; Melão; Solo; Adubação; Cucumis Melo; Fósforo; Matéria Orgânica; Irrigação; Nitrogênio; Potássio; Vertissolo.; Irrigation; Melons; Nitrogen; Potassium; Phosphorus; Soil..
Ano: 1995 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/132024
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Adubação química de cultivares de pimenta-do-reino (Piper nigrum L.) em latossolo amarelo da rodovia Transamazônica. Infoteca-e
VELOSO, C. A. C.; KATO, O. R.; ALBUQUERQUE, F. C. de; BRANDÃO, G. R..
bitstream/item/61692/1/Belem-ComTec1.pdf
Tipo: Comunicado Técnico (INFOTECA-E) Palavras-chave: Pimenta-do-reino; Cultivar; Rodovia Transamazônica; Altamira; Marabá; Pará; Brasil; Black papper; Fertilizer; Variety; Yellow latosol; Production.; Adubação; Fósforo; Latossolo Amarelo; Nitrogênio; Piper Nigrum; Potássio; Produção.; Amazonia; Phosphorus; Nitrogen; Potassium..
Ano: 1988 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/381259
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Aggregate size effects on extractable phosphorus on acid upland soils International Rice Research Institute
Widowati, Ladiyani Retno.
xv, 83 p. : ill. Thesis (M.S.) -- University of the Philippines at Los Baños
Tipo: Thesis Palavras-chave: Acid soils; Upland soils; Soil aggregates; Phosphorus; Zea mays; Plant growth.
Ano: 2001 URL: http://hdl.handle.net/123456789/460
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Agricultura e qualidade da agua: contaminacao da agua por nitrato. Infoteca-e
RESENDE, A. V. de.
bitstream/CPAC-2009/24718/1/doc_57.pdf
Tipo: Documentos (INFOTECA-E) Palavras-chave: Contamination; Health.; Contaminação; Fósforo; Impacto Ambiental; Nitrogênio; Poluição da Água; Saúde.; Recurso Hídrico; Qualidade da Água; Environmental impact; Eutrophication; Nitrates; Nitrogen; Phosphorus; Water resources.; Water quality; Water pollution.
Ano: 2002 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/546464
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Agronomic efficiency of polymer-coated triple superphosphate in onion cultivated in contrasting texture soils Rev. Ciênc. Agron.
Chagas,Wantuir Filipe Teixeira; Guelfi,Douglas Ramos; Emrich,Eduardo Bucsan; Silva,André Leite; Faquin,Valdemar.
ABSTRACT Information related to phosphate fertilization and coated phosphate fertilizer in onion is scarce. Thus, this study was carried out to evaluate agronomic efficiency, production and nutritional characteristics of triple superphosphate coated with polymers in onion cultivated in contrasting texture soils. Two experiments were carried out under protected conditions in pots containing 5 kg soil. The experimental design was completely randomized with treatments arranged in a 2 x 5 factorial: triple superphosphate (TSP) and polymer-coated triple superphosphate (TSP+P) applied in five phosphorus rates: Dystroferric Red Latosol (LVdf) (clayey) = 0; 100; 200; 400; 800 mg P2O5 kg-1, and Quartzarenic Neosol (sandy) = 0; 75; 150; 300; 600 mg P2O5 kg-1, with...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Allium cepa L.; Coated fertilizers; Phosphorus.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1806-66902016000300439
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Analysis of variance of primary data on plant growth analysis PAB
Araújo,Adelson Paulo.
Plant growth analysis presents difficulties related to statistical comparison of growth rates, and the analysis of variance of primary data could guide the interpretation of results. The objective of this work was to evaluate the analysis of variance of data from distinct harvests of an experiment, focusing especially on the homogeneity of variances and the choice of an adequate ANOVA model. Data from five experiments covering different crops and growth conditions were used. From the total number of variables, 19% were originally homoscedastic, 60% became homoscedastic after logarithmic transformation, and 21% remained heteroscedastic after transformation. Data transformation did not affect the F test in one experiment, whereas in the other experiments...
Tipo: Info:eu-repo/semantics/article Palavras-chave: ANOVA model; Statistic; Phosphorus; Common bean; Rice.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2003000100001
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Apparent nutrient digestibility and mineral availability of protein-rich ingredients in extruded diets for Nile tilapia R. Bras. Zootec.
Guimarães,Igo Gomes; Pezzato,Luiz Edivaldo; Barros,Margarida Maria; Fernandes,Rosângela do Nascimento.
Apparent digestibility coefficients (ADC) of gross energy and dry matter (DM) and mineral availability were evaluated for eight protein-rich ingredients (corn gluten meal, soybean meal, cottonseed meal at 280.0 and 380.0 g/kg, poultry by-product meal, meat meal, fish meal and feather meal) in compound diets for Nile tilapia. Chromic oxide was used as inert digestibility marker. Higher ADC values of DM and energy were, respectively, 0.862 and 0.881 for corn gluten meal, 0.811 and 0.888 for poultry by-product meal; 0.729 and 0.731 for feather meal; 0.666 and 0.754 for fish meal; 0.578 and 0.642 for soybean meal; 0.476 and 0.652 for meat meal at 450.0 g/kg; 0.352 and 0.449 for cottonseed meal at 380 g/kg; and 0.251 and 0.324 for cottonseed meal at 280.0 g/kg....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Calcium; Feed evaluation; Gross energy; Nutritional value; Oreochromis niloticus; Phosphorus.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000800001
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Aspectos relacionados ao manejo da adubação fosfatada em solos do Cerrado. Infoteca-e
RESENDE, A. V. de; FURTINI NETO, A. E..
ABSTRACT: The management of phosphate fertilization in the Cerrado soils has been studied for almost 40 years and represents an extremely important technology towards to a successfull agricultural exploration of the region. However, many aspects related to soil phosphorus dynamic, availability, and its use efficiency by crops remain not well understood, and are relevant research themes. The possible utilization of distinct solubility phosphates, the field cropping history, and the influence of crop systems involving no tillage or crop-livestock integration may affect the efficiency of different fertilization strategies. This publication is a review about some of these topics and their relationship to the evolution of soil management in the Cerrado Region.
Tipo: Documentos (INFOTECA-E) Palavras-chave: Phosphate fertilizer.; Adubação; Fertilidade do Solo; Fósforo.; Fertilizante Fosfatado; Fertilizer application; Phosphorus; Soil fertility..
Ano: 2007 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/572251
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Assessing the Distributional Impacts of Transferable Pollution Permits: The Case of Phosphorus Pollution Management at a River Basin Scale AgEcon
Kampas, Athanasios; Mamalis, Spyridon.
Although the initial allocation of pollution permits is neutral in terms of efficiency, it does have a significant impact on distributive equity. In this paper, we examine the two main categories of permit allocation rules, the distributive and the reductive, for controlling phosphorus pollution in a small catchment in South West England. Based on the premise that the regulatory choice compromises efficiency and equity, the main result of this paper is that an allocation of permits in proportion to the intensity of environmental preferences is a “win-win” choice. The reason is that it simultaneously achieves two goals. First, it is efficient (or cost-effective) since a permit system achieves a prespecified target at a minimum abatement cost, while second,...
Tipo: Journal Article Palavras-chave: Pollution permits; Phosphorus; Nutrient management; Export coefficient model; Water quality; Distributive justice; Income inequality; Atkinson Index; Environmental Economics and Policy.
Ano: 2006 URL: http://purl.umn.edu/44115
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Availability of Nitrogen, Phosphorus and Potassium from Poultry Litter and Conventional Fertilizers in a Volcanic Soil Cultivated with Silage Corn Chilean J. Agric. Res.
Hirzel,Juan; Walter,Ingrid.
Poultry litter (PL) is an organic matter source used as soil amendment. Besides its important nutrient content, it is a cheap alternative to conventional fertilizers in crop production. The efficient use of PL also helps reduce the environmental problems normally associated with its disposal near poultry production farms. This article reports the relative effects of PL and conventional fertilizers on the availability of soil N, P and K, dry matter (DM) production and total nutrient content in silage corn (Zea mays L.). The field experiment was carried out in a soil derived from volcanic ash (Tipic Melanoxerands) of Central South Chile. Corn was grown for three seasons (2002-2005) and PL and conventional fertilizers were applied in the first two years. The...
Tipo: Journal article Palavras-chave: Poultry litter; Soil fertility; Corn; Nitrogen; Phosphorus; Potassium.
Ano: 2008 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392008000300006
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Available phosphorus levels in diets for 30 to 60 kg female pigs selected for meat deposition by maintaining calcium and available phosphorus ratio R. Bras. Zootec.
Saraiva,Alysson; Donzele,Juarez Lopes; Oliveira,Rita Flávia Miranda de; Abreu,Márvio Lobão Teixeira de; Silva,Francisco Carlos de Oliveira; Vianna,Rafael Alves; Lima,Anderson Lazarini.
With the objective to evaluate levels of available phosphorus (aP) in diets for pigs selected for meat deposition by maintaining the calcium and available phosphorus ratio, it was used 50 commercial hybrid female pigs with initial weight of 30.32 ± 0.29 kg, distributed in a complete randomized experimental design, with five treatments, five replicates, and two animals per experimental unit. Treatments were composed of a corn-soybean meal basal diet and four diets obtained by supplementation of basal diet with dicalcium phosphate, resulting in diets with 0.144; 0.224; 0.304; 0.384 and 0.464% of aP. Calcium levels were adjusted by varying the quantities of limestone in the diets. There was no effect of aP on both daily feed intake and feed conversion. Levels...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Growth phase; Phosphorus; Performance; Requirement.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011000300017
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Avaliação de gramíneas forrageiras em área de mangue da Ilha de Marajó. Infoteca-e
NASCIMENTO, C. N. B. do; CARVALHO, L. O. D. de M.; CAMARÃO, A. P.; SALIMOS, E. P..
bitstream/item/31973/1/CPATU-BP93.pdf
Tipo: Séries anteriores (INFOTECA-E) Palavras-chave: Terra inundavel; Intervalo de corte; Marajo; Pará; Brasil; Floodable land; Mangrove; Forage grass; Dry matter; Cut interval.; Cálcio; Fósforo; Gramínea Forrageira; Matéria Seca; Mangue; Magnésio; Potássio; Proteína Bruta.; Amazonia; Crude protein; Calcium; Magnesium; Phosphorus; Potassium..
Ano: 1988 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/383635
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Avaliação de uma rocha ígnea como corretivo de acidez e disponibilização de nutrientes para as plantas. Infoteca-e
ANDRADE, L. R. M. de; MARTINS, E. de S.; MENDES, I. de C..
RESUMO: O objetivo deste trabalho foi avaliar o potencial da rocha fresca carbonatito, proveniente da mina de fosfato localizada em Catalão - GO, como um possível fonte de insumos para a agricultura. O ensaio foi conduzido no campo, com o objetivo de avaliar o potencial de carbonatito como fonte de: (a) P; e, (b) K, para uma pastagem de Brachiaria ruziziensis. Foram realizados três cortes (abril/2000, fevereiro e maio/2001) das plantas e amostragem de solo e do tecido para análises químicas. Os resultados obtidos aos 560 dias depois da aplicação do carbonatito (CBT) demonstram que a maior produção de matéria seca (MS) foi atingida com a aplicação de 200 kg P2O5 / ha ) na forma solúvel. Não houve efeitos significativos do CBT como fonte de P na produção de...
Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) Palavras-chave: PVGSOL200; Correcao do solo; Rock.; Acidez do Solo; Calcário; Corretivo; Fósforo; Magnesito; Insumo; Nutriente; Pastagem; Potássio; Rocha; Solo.; Farm inputs; Calcite; Liming; Phosphorus; Nutrients; Pastures; Potassium; Soil pH.; Soil amendments.
Ano: 2002 URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/563943
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Bioavailability of Phosphorus and Micronutrients in the Soil-Plant-Microbe Continuum R.C. Suelo Nutr. Veg.
Rengel,Z.
Tipo: Journal article Palavras-chave: Phosphorus; Micronutrients.
Ano: 2008 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-27912008000400013
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Biofertilizers and performance of Paenibacillus in the absorption of macronutrients by cowpea bean and soil fertility AGRIAMBI
Silva,Valéria N. da; Silva,Luiz E. de S. F. da; Silva,Apolino J. N. da; Macedo,Gorete R. de.
ABSTRACT The study was conducted in a greenhouse at the Agricultural Research Corporation of Rio Grande do Norte (EMPARN), in order to evaluate the effect of biofertilizers and potassium phosphate rocks, triple superphosphate (TSP) and potassium chloride (KCl), crushed rocks on the chemical properties of the soil and performance of the bacteria Paenibacillus polymyxa in the absorption of macronutrients by the cowpea bean crop. An Ultisol (10 kg per pot) was used with the addition of biofertilizers at levels 40, 70, 100 and 200% of recommendation for TSP and KCl, inoculated or not with bacteria. There was an effect of fertilization on the absorption of macronutrients, being the best results for P and K with TSP + KCL, and N, Ca and Mg for the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: PRPG; Rock powder; Phosphorus; Potassium.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662015001201136
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Biogeochemical aspects of bottom anoxia in a Mediterranean lagoon (Thau, France) ArchiMer
Souchu, Philippe; Gasc, Anne; Collos, Y; Vaquer, A; Tournier, Henri; Bibent, B; Deslous-paoli, Jean-marc.
Physical and chemical characteristics (temperature, salinity, dissolved oxygen), nutrients [dissolved inorganic nitrogen (DIN), soluble reactive phosphorus (SRP) and silicate], dissolved organic nitrogen (DON) and phosphorus and particulate matter [particulate organic carbon (POC) and nitrogen (PON) and chlorophyll a] were measured at a station located in the deepest part of the Thau lagoon (8.5 m), France, during a 10 d period of bottom anoxia in summer 1994. The upper 8 cm of sediment were also analyzed for ammonium (NH(4)(+)) and SRP concentrations in the porewater. The study period was characterized by mean wind speed under 4 m s(-1) which induced an increase of surface temperature from 18 to 29 degrees C with the formation of a thermocline. The...
Tipo: Text Palavras-chave: Anoxia; Nitrogen; Phosphorus; Eutrophication; Thau lagoon; Mediterranean Sea.
Ano: 1998 URL: http://archimer.ifremer.fr/doc/00070/18142/15694.pdf
Registros recuperados: 235
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