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	Provedor de dados PAB (1) Planta Daninha (1) Rev. Bras. Ciênc. Solo (1) AGRIAMBI (1) Autor ATHAR,M. (1) Horta,Carmo (1) Janegitz,Moniki Campos (1) Parentoni,Sidney Netto (1) Rosolem,Ciro Antonio (1) Souza Júnior,Claudio Lopes de (1) Souza,Elialdo Alves de (1) VASILEVA,V. (1) Mais... Palavra-chave Phosphorus use efficiency (4) Available phosphorus (1) Cover crops (1) Mineral nutrition (1) Olsen P (1) Phosphorus acquisition (1) Phosphorus fractionation (1) Phosphorus sustainability (1) Plant breeding (1) Pure and mixed culture (1) Quotient of utilization (1) Sainfoin (1) Subterranean clover (1) Tall fescue (1) Zea mays (1) Mais... Tipo do documento Info:eu-repo/semantics/article (4) Ano 2018 (1) 2017 (1) 2016 (1) 2008 (1) País Brazil (4) Idioma Inglês (4)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 4 Primeira ... 1 ... Última Phosphorus acquisition and internal utilization efficiency in tropical maize genotypes PAB Parentoni,Sidney Netto; Souza Júnior,Claudio Lopes de. The objective of this work was to determine the relative importance of phosphorus acquisition efficiency (PAE - plant P uptake per soil available P), and phosphorus internal utilization efficiency (PUTIL - grain yield per P uptake) in the P use efficiency (PUE - grain yield per soil available P), on 28 tropical maize genotypes evaluated at three low P and two high P environments. PAE was almost two times more important than PUTIL to explain the variability observed in PUE, at low P environments, and three times more important at high P environments. These results indicate that maize breeding programs, to increase PUE in these environments, should use selection index with higher weights for PAE than for PUTIL. The correlation between these two traits showed... Tipo: Info:eu-repo/semantics/article Palavras-chave: Zea mays; Mineral nutrition; Phosphorus acquisition; Phosphorus use efficiency; Plant breeding; Quotient of utilization. Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2008000700014 Studies on Nodulating Capacity of Some Forage Legumes Grown Alone or in Mixtures Planta Daninha VASILEVA,V.; ATHAR,M.. ABSTRACT: A pot experiment was conducted to study the nodulating capacity of some forage legumes. Birdsfoot trefoil (Lotus corniculatus L), sainfoin (Onobrychis viciifolia Scop.) and subterranean clover (Trifolium subterraneum L.) were grown in pure culture (100%) and in mixtures with tall fescue (Festuca arundinacea Schreb.) in the ratios: birdsfoot trefoil + tall fescue (50:50%); sainfoin + tall fescue (50:50%); subterranean clover + tall fescue (50:50%); birdsfoot trefoil + subterranean clover + tall fescue (33:33:33%); sainfoin + subterranean clover + tall fescue (33:33:33%). Birdsfoot trefoil from the crops cultivated in pure stands showed the highest nodulation rating (31), followed by sainfoin (26) and subterranean clover (26). Nodulation rating in... Tipo: Info:eu-repo/semantics/article Palavras-chave: Phosphorus use efficiency; Sainfoin; Subterranean clover; Tall fescue; Pure and mixed culture. Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582018000100233 Brachiaria as a Cover Crop to Improve Phosphorus Use Efficiency in a No-till Oxisol Rev. Bras. Ciênc. Solo Janegitz,Moniki Campos; Souza,Elialdo Alves de; Rosolem,Ciro Antonio. ABSTRACT Oxidic soils are phosphorus drains in soil; hence, P availability is a limiting factor in tropical, weathered Oxidic soils. It has been shown that some brachiarias grown as cover crops may increase soil available P to subsequent crops. The objective of this study was to evaluate soil P cycling and availability, as well as the response of soybean to soluble and natural reactive phosphates as affected by ruzi grass (Urochloa ruziziensis, R. Germ. and C.M. Evrard, Crin) grown as a cover crop in a no-till system. Experimental treatments consisted of the presence or absence of ruzi grass in combination with a control (0.0 P) and soluble and reactive rock phosphate broadcast on the soil surface in the winter (80 kg ha-1 P2O5), plus three rates of P... Tipo: Info:eu-repo/semantics/article Palavras-chave: Available phosphorus; Phosphorus use efficiency; Cover crops. Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100536 Bioavailability of phosphorus from composts and struvite in acid soils AGRIAMBI Horta,Carmo. ABSTRACT The objective of this study was to assess the type and fractions of phosphorus (P) forms in composts and struvite and how these P forms affect the bioavailability of P in the soil. P fertilization was performed with compost from sewage sludge (CSS), compost from poultry litter (CPL) and struvite (SV) and compared with single superphosphate (SSP). P forms were quantified through a sequential fractionation scheme. The first extraction was performed with H2O, the second with 0.5 M NaHCO3, the third with 0.1 M NaOH and the fourth with 1 M HCl. The release of P over time, after soil P fertilization, was assessed by incubating the fertilizers with a low-P acid soil. P bioavailability was assessed through a micro-pot experiment with the incubated soils... Tipo: Info:eu-repo/semantics/article Palavras-chave: Olsen P; Phosphorus fractionation; Phosphorus sustainability; Phosphorus use efficiency. Ano: 2017 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000700459 Registros recuperados: 4 Primeira ... 1 ... Última

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