Sabiia Seb
PortuguêsEspañolEnglish
Embrapa
        Busca avançada

Botão Atualizar


Botão Atualizar

Ordenar por: 

RelevânciaAutorTítuloAnoImprime registros no formato resumido
Registros recuperados: 16
Primeira ... 1 ... Última
Imagem não selecionada

Imprime registro no formato completo
Biofertilzers with natural phosphate, sulphur and Acidithiobacillus in a siol with low available-P Scientia Agricola
Stamford,Newton Pereira; Santos,Patrícia Ribeiro dos; Moura,Adriana Muniz Mendes Freire de; Santos,Carolina Etiene de Rosália e Silva; Freitas,Ana Dolores Santiago de.
The production of mineral fertilizers is a expensive process, since it requires high energy consumption, and cannot be produced by small farmers. Laboratory assays were conducted to produce P-biofertilizers from natural phosphate (B5, B10, B15, B20), applying sulphur at different rates (5; 10; 15 and 20%) inoculated with Acidithiobacillus (S*) and testing increasing periods of incubation. A greenhouse experiment was carried out to evaluate the effect of the biofertilizers in a soil with low available P (Typic Fragiudult) from the "Zona da Mata" of Pernambuco State, grown with yam bean (Pachyrhizus erosus) in two consecutive harvests. The treatments were: Natural Phosphate (NP); biofertilizers produced in laboratory (B5, B10, B15, B20) with sulphur and...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Pachyrhizus erosus; P uptake; Phosphorus fertilization; Yam bean.
Ano: 2003 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000400024
Imagem não selecionada

Imprime registro no formato completo
COFFEE YIELD AND PHOSPHATE NUTRITION PROVIDED TO PLANTS BY VARIOUS PHOSPHORUS SOURCES AND LEVELS Ciência e Agrotecnologia
Dias,Kaio Gonçalves de Lima; Neto,Antônio Eduardo Furtini; Guimarães,Paulo Tácito Gontijo; Reis,Thiago Henrique Pereira; Oliveira,Cesar Henrique Caputo de.
Phosphorus (P) is considered one of the nutrients that most limits crop yields, especially in soils with an advanced degree of weathering. To evaluate P dynamics and availability in soil resulting from various P doses and sources and to assess the resulting P content of coffee leaves and the final coffee yield, an experiment was conducted in the municipality of Três Pontas, MG, Brazil, in a Red Argisol (Ultisol) area. Fertilization, except for P fertilization, was performed based on the soil analysis results. The annual P doses tested were 0, 75, 150, 300, 450 and 600 kg ha-1 P2O5. Two P sources, simple superphosphate and magnesium thermal phosphate, were evaluated and compared in the study. A physicochemical analysis of the soil and an analysis of leaf...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Coffee nutrition; Coffea arabica; Phosphorus fertilization.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542015000200110
Imagem não selecionada

Imprime registro no formato completo
EFFECTS OF PHOSPHORUS FERTILIZATION ON ARSENIC UPTAKE BY WHEAT GROWN IN POLLUTED SOILS J. Soil Sci. Plant Nutr.
Pigna,M; Cozzolino,V; Giandonato Caporale,A; Mora,M.L; Di Meo,V; Jara,A.A; Violante,A.
In this study we have examinated the results of two experiments on the uptake and distribution of arsenic (As) in roots, shoots, and grain of wheat grown in As-polluted soils and in an unpolluted soil irrigated with As-contaminated water in absence or presence of phosphorus (P) fertilization. Arsenic concentrations in wheat samples of the two experiments are higher than those in the plants grown on uncontaminated soil. In the experiments showed in this work, it is highlighted the role of P fertilization in preventing As uptake and translocation in wheat plants. These findings could have important implications to reduce the potential risk posed to human health by As entering the food-chain.
Tipo: Journal article Palavras-chave: Phosphorus fertilization; Arsenic; Wheat; Polluted soils.
Ano: 2010 URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162010000200004
Imagem não selecionada

Imprime registro no formato completo
Fontes, doses e modos de aplicação de fósforo na interação fósforo-zinco em milho. Repositório Alice
CARNEIRO, L. F.; FURTINI NETO, A. E.; RESENDE, Á. V. de; CURI, N.; SANTOS, J. Z. L.; LAGO, F. J. do..
No presente trabalho, objetivou-se avaliar a interação P-Zn no milho durante dois cultivos sucessivos, num Argissolo Vermelho típico, textura argilosa, na região do Cerrado. O delineamento experimental foi o de blocos casualizados com quatro repetições, num esquema fatorial 3x2x2+1, envolvendo três doses de P2O5 (180, 360 e 540 kg ha-1), duas fontes (superfosfato triplo S Tefosfato natural reativo de Arad-FR), duas formas de aplicação (a lanço em área total e no sulco de plantio) e uma testemunha (sem P) como tratamento adicional. Determinaram-se o peso de matéria seca da parte aérea e de grãos, teores de P, Zn e relação P-Zn nas folhas e nos grãos. Os teores de Zn diminuíram com aplicação de ST no sulco, alcançando valores tidos como deficientes, no...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Nutrição mineral; Adubação fosfatada; Avaliação nutricional; Milho; Zea mays; Mineral nutrition; Phosphorus fertilization; Nutritional assessment; Maize.
Ano: 2008 URL: http://www.alice.cnptia.embrapa.br/handle/doc/571633
Imagem não selecionada

Imprime registro no formato completo
Growth, mineral composition, fruit yield, and mycorrhizal colonization of feijoa in response to lime and phosphorus application. Repositório Alice
NAVA, G.; SANTOS, K. L. dos.; COSTA, M. D.; CIOTTA, M. N..
2016
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Acca sellowiana; Mineral nutrition; Mycorrhizal colonization; Nutritional status; Phosphorus fertilization; Soil acidity.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1054329
Imagem não selecionada

Imprime registro no formato completo
Growth, mineral composition, fruit yield, and mycorrhizal colonization of feijoa in response to lime and phosphorus application PAB
Nava,Gilberto; Santos,Karine Louise dos; Costa,Murilo Dalla; Ciotta,Marlise Nara.
Abstract: The objective of this work was to investigate the effect of liming and phosphorus fertilization on the growth, mineral composition of the leaves, fruit yield, and mycorrhizal colonization of young feijoa (Acca sellowiana) plants. Treatments consisted of four liming levels - 0, 25, 50, and 100% of the dose required to raise the soil pH to 6.5 - and of five levels of P - 0, 60, 120, 180, and 240 kg ha-1 P2O5 -, placed in a randomized complete block design, in a split-plot arrangement, with three replicates. The orchard was established in 2010 with the Helena cultivar. In 2012, 2013, and 2014, plant growth was evaluated by measuring trunk perimeter, plant height, and tree canopy width. Mineral composition of the leaves, regarding P, N, K, Ca, and Mg...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Acca sellowiana; Mineral nutrition; Mycorrhizal colonization; Nutritional status; Phosphorus fertilization; Soil acidity.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2016000800942
Imagem não selecionada

Imprime registro no formato completo
How glyphosate may affect transgenic soybean in different soil and phosphorus levels Planta Daninha
Casonatto,M.S.; Arantes,S.A.C.M.; Rieger E.A.,; Andrade,E.A..
The technology that employs genetic modifications brought a significant increase in the utilization of glyphosate. Transgenic soybean has been suffering injury, even though it possesses a resistance mechanism to glyphosate. Currently, there are only a few studies on the dynamics of glyphosate in transgenic soybean planted in soils with different textures interacting with phosphorus concentrations. This study focused on assessing the effects of glyphosate in transgenic soybean plants on different types of soil and at different phosphorus levels. The experimental design was completely randomized, in factorial design: 2 x 6 x 3, that being 2 soil types, 6 doses of glyphosate and 3 levels of phosphorus, and four replications. Plants were cultivated for thirty...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Phosphorus fertilization; Herbicide; Selectivity; Genetic modifications.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-83582014000400019
Imagem não selecionada

Imprime registro no formato completo
Níveis críticos para o estabelecimento de quatro cultivares de Pannicum maximum em latossolo vermelho amarelo, Álico. Repositório Alice
CORRÊA, L. A.; FREITAS, L. R.; EUCLIDES, V. P. B..
1996
Tipo: Artigo em anais de congresso (ALICE) Palavras-chave: Fósforo no solo; Fósforo na planta; Adubação fosfatada; Graminea forrageira; Soil phosphorus; Phosphorus fertilization; Grass; Pastures; Paspalum dilatatum.
Ano: 1996 URL: http://www.alice.cnptia.embrapa.br/handle/doc/43195
Imagem não selecionada

Imprime registro no formato completo
Phosphorus fractions in the vineyard soil of the Serra Gaúcha of Rio Grande do Sul, Brazil AGRIAMBI
Schmitt,Djalma E.; Gatiboni,Luciano C.; Girotto,Eduardo; Lorensini,Felipe; Melo,George W. B.; Brunetto,Gustavo.
The study aimed to evaluate the accumulation of P fractions in a vineyard soil profile with successive applications of phosphate fertilizers. In January 2010 an area was selected of native forest and a vineyard at age 33 with a history of phosphate fertilizer application, in Bento Gonçalves, Rio Grande do Sul state. Soil samples were collected from 0-5, 5-10 and 10-20 cm layers, prepared and submitted to chemical fractionation of P. The excessive application of phosphate fertilizers during 33 years in the vineyard soil increased the levels of organic and inorganic P until the 20 cm layer in all P fractions. The highest levels of P in the vineyard soil were found mainly in the labile fractions extracted with anion exchange resin and NaHCO3, which indicates...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Phosphorus fertilization; Environmental contamination; Vitis vinifera.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662014000200002
Imagem não selecionada

Imprime registro no formato completo
Phosphorus rates on yield and quality of lettuce seeds. Repositório Alice
KANO, C.; CARDOSO, A. I. I.; VILLAS BÔAS, R. L..
2012
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Lactuca sativa; Phosphorus fertilization; P2O5; Germination; Vigor; Adubação fosfatada; Germinação.
Ano: 2012 URL: http://www.alice.cnptia.embrapa.br/handle/doc/942592
Imagem não selecionada

Imprime registro no formato completo
Phosphorus rates on yield and quality of lettuce seeds Horticultura Brasileira
Kano,Cristiaini; Cardoso,Antonio Ismael Inácio; Bôas,Roberto L Villas.
Because of lack of information about phosphorus fertilization in lettuce from the standpoint of seed production, this study was undertaken. The work was carried out in Botucatu, São Paulo state, Brazil, from September 25, 2003 to February 19, 2004, in order to study the influence of crescents phosphorus rates on yield and quality of lettuce seeds, cultivar Verônica. The experimental design was randomized blocks with five treatments (0; 200; 400; 600 and 800 kg ha-1 of P2O5) and five replications. The following characteristics were evaluated: seed production per plant (g plant-1), number of seeds per plant and quality (percentage of germination and seed vigor). A linear increasing was observed on production and number of seeds per plant of lettuce with...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Lactuca sativa; Phosphorus fertilization; P2O5; Germination; Vigor.
Ano: 2012 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362012000400021
Imagem não selecionada

Imprime registro no formato completo
Relationships between labile soil organic carbon fractions under different soil management systems. Repositório Alice
SOUZA, G. P. de; FIGUEIREDO, C. C. de; SOUSA, D. M. G. de.
ABSTRACT: The study of labile carbon fractions (LCF) provides an understanding of the behavior of soil organic matter (SOM) under different soil management systems and cover crops. The aim of this study was to assess the effect of different soil management systems with respect to tillage, cover crop and phosphate fertilization on the amount of the LCF of SOM. Treatments consisted of conventional tillage (CT) and no-tillage (NT) with millet as the cover crop and a no-tillage system with velvet bean at two phosphorus dosages. Soil samples were collected and analyzed for organic carbon (OC), C oxidizable by KMnO4 (C-KMnO4), particulate OC (POC), microbial biomass carbon and light SOM in the 0.0-0.05, 0.05-0.10 and 0.10-0.20 m soil layers. The Carbon...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Labile organic matter; Soil organic matter; Phosphorus fertilization; Matéria orgânica instável; Materia orgânica; Solo; Fertilidade do solo; Fósforo.
Ano: 2016 URL: http://www.alice.cnptia.embrapa.br/handle/doc/1054545
Imagem não selecionada

Imprime registro no formato completo
Relationships between labile soil organic carbon fractions under different soil management systems Scientia Agricola
Souza,Géssica Pereira de; Figueiredo,Cícero Célio de; Sousa,Djalma Martinhão Gomes de.
ABSTRACT The study of labile carbon fractions (LCF) provides an understanding of the behavior of soil organic matter (SOM) under different soil management systems and cover crops. The aim of this study was to assess the effect of different soil management systems with respect to tillage, cover crop and phosphate fertilization on the amount of the LCF of SOM. Treatments consisted of conventional tillage (CT) and no-tillage (NT) with millet as the cover crop and a no-tillage system with velvet bean at two phosphorus dosages. Soil samples were collected and analyzed for organic carbon (OC), C oxidizable by KMnO4 (C-KMnO4), particulate OC (POC), microbial biomass carbon and light SOM in the 0.0-0.05, 0.05-0.10 and 0.10-0.20 m soil layers. The Carbon Management...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Labile organic matter; Soil organic matter; Phosphorus fertilization.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162016000600535
Imagem não selecionada

Imprime registro no formato completo
Resposta da alfafa a diversas disponibilidades de agua. Repositório Alice
CUNHA, G.R. da; BERGAMASCHI, H.; PAULA, J.R.F. de; SAIBRO, J.C. de.
Foi conduzido um estudo com alfafa (Medicago sativa L.), cv. Crioula,semeada em junho de 1989 (0,3 m entre linhas), na EEA-UFRGS, em Eldorado do Sul (30.5'S,51.39'W e 46 m de altitude), visando avaliar a resposta da cultura a agua e sua interacao com a disponibilidade de fosforo (P). Foi usado o sistema de aspersao em linha, envolvendo seis laminas de agua (chuva + irrigacao) e tres doses de P (uma, duas e quatro vezes a recomendada, de acordo com a analise de solo). O rendimento total de materia seca (MS) de quatro cortes do periodo de primavera-verao, de outubro de 1989 a marco de 1990, foi significativamente afetado somente pela espessura da lamina de agua. O rendimento total de MS relacionado com a maior espessura da lamina de agua (716,9 mm) foi 125%...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Deficit hidrico; Funcao de producao; Irrigacao; Medicago sativa; Sistema de aspersao em linha; Fertilizacao com fosforo; Hydric deficit; Production function; Irrigation; Line-source sprinkler system; Phosphorus fertilization.
Ano: 1998 URL: http://www.alice.cnptia.embrapa.br/handle/doc/97637
Imagem não selecionada

Imprime registro no formato completo
Resposta diferencial de genotipos de trigo em relacao a fosforo no solo. Repositório Alice
BEN, J.R.; DECHEN, A.R..
A baixa disponibilidade de fosforo dos solos brasileiros, o custo elevado da adubacao fosfatada e a condicao de recurso natural nao renovavel e escasso desse nutriente motivaram o desenvolvimento de um programa de melhoramento genetico, na Embrapa-CNPT, visando a obtencao de genotipos com maior eficiencia no aproveitamento do fosforo no solo. Os materiais foram obtidos por retrocruzamento das cultivares recorrentes BH 1146, Nobre, Tucunduva 2-78, IAS 55 e Londrina com a cultivar Toropi (fonte doadora) e selecionados em solo com deficiencia de fosforo e com acidez elevada. Neste estudo foi avaliado o comportamento, em relacao a fosforo, de genotipos oriundos desse programa, em condicoes de vasos, em ambiente de telado, utilizando solo pertencente a Unidade...
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Trigo; Triticum aestivum; Adubacao fosfatada; Melhoramento; Wheat; Plant breeding; Phosphorus fertilization.
Ano: 1998 URL: http://www.alice.cnptia.embrapa.br/handle/doc/97647
Imagem não selecionada

Imprime registro no formato completo
Resposta diferencial de genótipos de trigo em relação a fósforo no solo. Repositório Alice
BEN, J. R.; DECHEN, A. R..
1998
Tipo: Artigo em periódico indexado (ALICE) Palavras-chave: Triticum aestivum; Adubação fosfatada; Melhoramento; Wheat; Plant breeding; Phosphorus fertilization.
Ano: 1998 URL: http://www.alice.cnptia.embrapa.br/handle/doc/821958
Registros recuperados: 16
Primeira ... 1 ... Última
 

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Embrapa
Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC: https://www.embrapa.br/fale-conosco

Valid HTML 4.01 Transitional