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| Registros recuperados: 45 | |
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| Faria,Leandro N.; DONATO,Sergio L. R.; Santos,Marcelo R. Dos; Castro,Luciana G.. |
| ABSTRACT The objective of this study was to evaluate the nutrient contents in ‘Tommy Atkins’ mango leaves at the flowering and fruiting stages under different strategies to reduce irrigation levels during flower induction. Five irrigation level reduction strategies, based on crop evapotranspiration (ETc) were used in the plots: T1 (0% ETc), T2 (25% ETc), T3 (50% ETc), T4 (75% ETc) and T5 (100% ETc); two production cycles in the split-plots; and in two development stages, flowering and harvest, in the split-split plots. The content of N, P, K, Ca, Mg, and S, as well as B, Cu, Fe, Mn, Zn, and Na was determined and leaf chlorophyll index was measured during the second cycle. The content of P, K, Mg, and Cu in the ‘Tommy Atkins’ mango trees leaves varied... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Mangifera indica L.; Water deficit; Nutritional status. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162016000601073 |
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| Marouelli,Waldir A; Souza,Ronessa B; Braga,Marcos B; Silva,Washington LC. |
| We aimed to establish strategies for nitrogen (N) fertilization on drip-irrigated determinate-growth-habit tomato, under Cerrado conditions of Central Brazil. Three field experiments were carried out in a randomized block design. In experiment I six N doses (0, 80, 160, 240, 320 and 400 kg ha-1 N) were tested, in experiment II six combinations of the N forms (nitric; ammonium; amide; 2/3 nitric + 1/3 ammonium; 2/3 nitric + 1/3 amide; and 1/3 nitric + 2/3 amide) were evaluated, and in experiment III the combination of three soil pre-plant fertilization fractions (0, 20 and 40%) was evaluated with two splitting schemes of the remaining N via fertigation (linear and adjusted N-uptake curve). SPAD chlorophyll index and N content were measured in the leaves of... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solanum lycopersicon; Processing tomato; Determinate growth; Fertigation; Nutritional status; Economic analysis. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362014000300327 |
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| WADT, P. G. S.; SILVA, L. M. da; CATANI, V.. |
| O gênero Piper contém mais de mil espécies que se distribuem no sub-bosque e na vegetação secundária de ?orestas tropicais, principalmente na Ásia e América Tropical (WADT et al., 2004). Na Amazônia Sul-Ocidental o gênero Piper também é abundante, destacando-se entre as espécies conhecidas a pimenta-longa (P. hispidinervum), cujo principal produto comercial é o safrol. Sua produtividade depende da produção de biomassa, do teor de óleo essencial na biomassa e do teor de safrol no óleo essencial. Em condições naturais, a variabilidade do teor de safrol no óleo essencial é baixa, com coe? ciente de variação de 2,58% (MIRANDA, 2001). No outro extremo, a produção de biomassa tem variado sob diferentes condições experimentais de 799 kg ha-1 (SILVA et al., 2001)... |
| Tipo: Circular Técnica (INFOTECA-E) |
Palavras-chave: Normas DRIS; Leaf analysis; Análisis foliar; Sistema integrado de formulación evaluación y monitoreo.; Análisis estadístico; Estatus nutricional; Fertilidad del suelo; Nutrición de las plantas; Nutrição vegetal; Pimenta longa; Piper hispidinervum; Estado nutricional; Análise foliar; Adubação; Fertilidade do solo; Análise estatística; Método estatístico; Plant nutrition; Nutritional status; Soil fertility; Statistical analysis; Diagnosis and Recommendation Integrated System.. |
| Ano: 2012 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1004590 |
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| SALMAN, A. K. D.; OSMARI, E. K.; FALEIRO NETO, J. A.; SANTOS, M. G. R. dos; MATARAZZO, S. V.. |
| Para tornar a pecuária leiteira rondoniense mais competitiva em relação aos demais estados brasi-leiros, a adoção de tecnologias é fundamental para a intensificação do processo de produção. Esse processo de intensificação visando à redução de área e/ou aumento da produção por área e maxi-mização dos lucros depende, estritamente, do manejo adotado para a alimentação do rebanho, já que os custos com a alimentação representam em torno de 40% a 60% do custo total de produção. Logo, o planejamento adequado do manejo nutricional do rebanho evita gastos desnecessários e favorece a lucratividade da atividade. O planejamento alimentar, no entanto, depende de conheci-mentos sobre o potencial nutricional dos alimentos disponíveis para a alimentação do rebanho, das... |
| Tipo: Documentos (INFOTECA-E) |
Palavras-chave: Rondônia; Amazônia Ocidental; Western Amazon; Nutrição Animal; Gado Leiteiro; Ração; Valor Nutritivo; Animal nutrition; Dairy cattle; Cattle feeds; Nutritive value; Nutritional status; Nutritional adequacy.. |
| Ano: 2020 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/1123902 |
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| Mugnier, Chantal; Justou, Carole; Lemonnier, Hugues; Patrois, Jacques; Ansquer, Dominique; Goarant, Cyrille; Le Coz, Jean-rene. |
| Shrimp aquaculture in New Caledonia is subject to seasonal mortalities during grow-out due to highly virulent Vibrio nigripulchritudo (Vn). To understand the mechanisms affecting shrimp resistance and leading to significant mortality, a shrimp ecophysiology and immunology survey was conducted on two farms, the first considered as a "control" farm (HC), the second affected by the disease (DF). Mortality observed during the survey at DF started 50 days after stocking and was typical of this disease. The main observations regarding shrimp were: (a) growth was not affected by the disease and was faster in the DF than in the HC pond; (b) disease did not affect one sex more than the other, or a specific part of the population in terms of weight; (c) the physical... |
| Tipo: Text |
Palavras-chave: Vibriosis; Penaeid shrimp; Field survey; Physiology; Immunology; Nutritional status. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00176/28764/27567.pdf |
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| Scalco,Myriane Stella; Alvarenga,Livia Alves; Guimarães,Rubens José; Dominghetti,Anderson Willian; Colombo,Alberto; Assis,Gleice Aparecida; Abreu,Giselle Figueiredo. |
| O objetivo deste trabalho foi avaliar os efeitos da irrigação sobre as concentrações foliares de P e Zn e sobre a produtividade e o crescimento do cafeeiro (Coffea arabica), cultivado em plantio tradicional e adensado. Utilizou-se o delineamento experimental de blocos ao acaso, em arranjo de parcelas subdivididas, com quatro repetições. As parcelas corresponderam às densidades de plantio (3.333 e 10.000 plantas ha-1), e as subparcelas corresponderam às lâminas d'água, aplicadas por quatro manejos de irrigação: início da irrigação, quando a tensão d´água no solo à profundidade de 0,25 m atingia valores próximos a 20 ou 60 kPa; turno fixo de irrigação (três vezes por semana), de acordo com o balanço hídrico climatológico; e testemunha sem irrigação. Em 2009,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Coffea arabica; Densidade de plantio; Estado nutricional; Fertirrigação; Interação entre nutrientes; Coffea arabica; Planting density; Nutritional status; Fertigation; Nutrient interaction. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2014000200095 |
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| 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 |
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| Moraes,Larissa Alexandra Cardoso; Moreira,Adônis; Fontes,José Roberto Antoniol; Cordeiro,Everton Rabelo; Moraes,Vicente Haroldo de Figueiredo. |
| The objective of this work was to assess the performance of panel clones under crowns resistant to South American leaf blight (Microcyclus ulei). The experiment was carried out with 18 panel clones crown-budded with Hevea pauciflora x H. guianensis, in a Xanthic Ferralsol (Oxisol) in Manaus, AM, Brazil. The following parameters were evaluated: dry rubber yield, plant nutritional status, and anatomical and physiological characteristics of the latex vessels. In the first three years of evaluation, the panel clones IAN 2878, IAN 2903, CNS AM 7905, CNS AM 7905 P1, and PB 28/59 showed the highest dry rubber yield potential, while the clones IAN 6158, IAN 6590, and IAN 6515 should not be recommended for crown budding. Higher potassium and copper foliar content... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hevea; Microcyclus ulei; Amazon; Crown budding; Nutritional status. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2011000500003 |
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| Reis Junior,Roberto dos Anjos; Monnerat,Pedro Henrique. |
| The objectives of this study were to establish DRIS norms for sugarcane crop, to compare mean yield, foliar nutrient contents and variance of nutrient ratios of low- and high-yielding groups and to compare mean values of nutrient ratios selected as the DRIS norms of low- and high-yielding groups. Leaf samples (analyzed for N, P, K, Ca, Mg, S, Cu, Mn and Zn contents) and respective yields were collected in 126 commercial sugarcane fields in Rio de Janeiro State, Brazil and used to establish DRIS norms for sugarcane. Nearly all nutrient ratios selected as DRIS norms (77.8%) showed statistical differences between mean values of the low- and high-yielding groups. These different nutritional balances between the low- and high-yielding groups indicate that the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Saccharum officinarum; Foliar nutrient content; Plant analysis; Nutritional status; Productivity. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2003000200015 |
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| Smith, Lisa C.; Byron, Elizabeth. |
| Recent research has shown that improving women’s decisionmaking power relative to men’s within households leads to improvements in a variety of well-being outcomes for children. In South Asia, where the influence of women’s power is particularly strong, these outcomes include children’s nutritional status and the quality of feeding and health care practices. Focusing on nutritional status, this paper presents the results of a study investigating whether increases in women’s power have a stronger positive influence on the nutritional status of their daughters than their sons. If so, then increasing women’s power not only improves the well-being of children as a group, but also serves as a force to reduce long-standing discrimination that undermines female... |
| Tipo: Working or Discussion Paper |
Palavras-chave: Gender discrimination; Nutritional status; Bangladesh; India; Nepal; Pakistan; Labor and Human Capital. |
| Ano: 2005 |
URL: http://purl.umn.edu/59285 |
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| Fox, Mary Kay; Hamilton, William L.; Lin, Biing-Hwan. |
| This report provides a summary of a comprehensive review and synthesis of published research on the impact of USDA's domestic food and nutrition assistance programs on participants' nutrition and health outcomes. The outcome measures reviewed include food expenditures, household nutrient availability, dietary intake, other measures of nutrition status, food security, birth outcomes, breastfeeding behaviors, immunization rates, use and cost of health care services, and selected nonhealth outcomes, such as academic achievement and school performance (children) and social isolation (elderly). The report is one of four volumes produced by a larger study that includes Volume 1, Research Design; Volume 2, Data Sources; Volume 3, Literature Review; and Volume 4,... |
| Tipo: Report |
Palavras-chave: Dietary intake; Food expenditures; Nutrient availability; Nutrient intake; Nutritional status; Nutrition and health outcomes; USDAs food assistance and nutrition programs; Food Security and Poverty. |
| Ano: 2004 |
URL: http://purl.umn.edu/33871 |
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| This report provides a comprehensive review and synthesis of published research on the impact of USDA's domestic food and nutrition assistance programs on participants' nutrition and health outcomes. The outcome measures reviewed include food expenditures, household nutrient availability, dietary intake, other measures of nutrition status, food security, birth outcomes, breastfeeding behaviors, immunization rates, use and cost of health care services, and selected nonhealth outcomes, such as academic achievement and school performance (children) and social isolation (elderly). The report is one of four volumes produced by a larger study that includes Volume 1, Research Design; Volume 2, Data Sources; Volume 3, Literature Review; and Volume 4, Executive... |
| Tipo: Report |
Palavras-chave: Dietary intake; Food expenditures; Nutrient availability; Nutrient intake; Nutritional status; Nutrition and health outcomes; USDA; Food Security and Poverty. |
| Ano: 2004 |
URL: http://purl.umn.edu/33863 |
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| Santin,Delmar; Benedetti,Eliziane Luiza; Barros,Nairam Félix de; Almeida,Igor Carvalho de; Leal,Greice Pereira; Fontes,Lucas; Neves,Júlio César Lima; Wendling,Ivar; Reissmann,Carlos Bruno. |
| Yerba mate (Ilex paraguariensis) is a tree species native to the subtropical regions of South America, and is found in Brazil predominantly in the southern region. Despite the historical importance in this region, so far, studies on crop nutrition to improve yields are scarce. Thus, this study evaluated the effect of potassium rates on K soil availability, and the yield and nutritional status of yerba mate. The experiment was conducted in São Mateus do Sul, State of Paraná, on a Humox soil, where K2O rates of 0, 20, 40, 80, 160, and 320 kg ha-1 were tested on 7-year-old plantations. The experiment was harvested 24 months after installation by removing approximately 95 % of the canopy that had sprouted from the previous harvest. The soil was evaluated for K... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil K availability; K mobility in the soil; Nutrient use efficiency; Nutritional status. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832014000500012 |
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| Santos,Elcio Ferreira dos; Zanchim,Bruno José; Campos,Aline Grella de; Garrone,Raphael Florencio; Lavres Junior,José. |
| Few studies in Brazil have addressed the need for micronutrients of physic nut focusing on physiological responses, especially in terms of photosynthesis. The objective of this study was to evaluate the effects of omission of boron (B), copper (Cu), iron (Fe), manganese (Mn) and zinc (Zn) on Jatropha curcas L.. The experimental design was a randomized block with four replications. The treatments were complete solution (control) and solution without B, Cu, Fe, Mn, and Zn. We evaluated the chlorophyll content (SPAD units), photosynthetic rate, dry matter production and accumulation of micronutrients in plants, resulting from different treatments. The first signs of deficiency were observed for Fe and B, followed by Mn and Zn, while no symptoms were observed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Jatropha curcas L.; Nutritional status; Dry matter; IRGA; SPAD. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832013000500022 |
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| Dias,Jairo Rafael Machado; Wadt,Paulo Guilherme Salvador; Perez,Daniel Vidal; Silva,Lucielio Manoel da; Lemos,Cleigiane de Oliveira. |
| DRIS, an Diagnosis and Recommendation Integrated System, is a tool to evaluate the nutritional status of plants. Different DRIS formulas have been proposed to improve the efficiency of the crop nutrition diagnoses. The objective of this study was to compare the nutritional diagnosis of the formulas of Beaufils (1973), of Jones (1981) and of Elwali and Gascho (1984), based on the degree of agreement in commercial orchards of Theobrama grandiflorum trees. Leaf samples of 5 to 18 year-old cupuaçu trees were collected from 153 commercial orchards in agroforestry and monoculture systems in the state of Rondonia, Brazil. Bivariate relationships between nutrition concentrations in healthy trees were used to calculate DRIS norms. DRIS indices were calculated based... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Theobroma grandiflorum; Foliar diagnosis; Fruit; Nutritional status. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832011000600023 |
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| Maia,Celsemy Eleutério. |
| Leaf analysis is the chemical evaluation of the nutritional status where the nutrient concentrations found in the tissue reflect the nutritional status of the plants. Thus, a correct interpretation of the results of leaf analysis is fundamental for an effective use of this tool. The purpose of this study was to propose and compare the method of Fertilization Response Likelihood (FRL) for interpretation of leaf analysis with that of the Diagnosis and Recommendation Integrated System (DRIS). The database consisted of 157 analyses of the N, P, K, Ca, Mg, S, Cu, Fe, Mn, Zn, and B concentrations in coffee leaves, which were divided into two groups: low yield (< 30 bags ha-1) and high yield (> 30 bags ha-1). The DRIS indices were calculated using the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Modeling; Nutritional status; DRIS. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000200013 |
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| Registros recuperados: 45 | |
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