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| Registros recuperados: 34 | |
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| AZEVEDO, W.R. de; FAQUIN, V.; FERNANDES, L.A.. |
| O objetivo deste trabalho foi avaliar a adsorção de B em quatro solos de várzea da região de Lavras, MG, por meio dos parâmetros das isotermas de Langmuir e Freundlich, no período de outubro a novembro de 1998. Amostraram-se solos Aluvial, Glei Pouco Húmico, Glei Húmico, e Orgânico artificialmente drenado, coletados na camada de 0-20 cm e peneirados para 2 mm. Amostras com e sem calagem foram incubadas durante 30 dias. Duplicatas de 4,0 g de solo de cada classe foram acondicionadas em tubos de polietileno com oito diferentes doses de B (0, 2, 4, 8, 12, 16, 24 e 32 mg mL-1) preparadas em CaCl2.2H2O 0,01 mol L-1, com ácido bórico como fonte. Os teores de B na solução de equilíbrio foram determinados pelo método da Azometina-H. Os resultados mostraram que... |
| Tipo: Artigo em periódico indexado (ALICE) |
Palavras-chave: Disponibilidade de nutrientes; Calagem; Materia organica; Nutrient availability; Liming; Organic matter. |
| Ano: 2001 |
URL: http://www.alice.cnptia.embrapa.br/handle/doc/103924 |
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| Geraldo, Adriano; Instituto Federal de Educação Ciência e Tecnologia de Minas Gerais; Gomes, Karina Rodrigues Aurora; Instituto Federal de Educação Ciência e Tecnologia de Minas Gerais; Fassani, Édison José; Universidade Federal de Lavras; Bertechini, Antonio Gilberto; Universidade Federal de Lavras; Simão, Sérgio Domingos; Instituto Federal de Educação Ciência e Tecnologia de Minas Gerais; Nogueira, Filipe Soares; Instituto Federal de Educação Ciência e Tecnologia de Minas Gerais. |
| This study was conducted in order to evaluate the association of phytase with an enzymatic complex comprised of carbohydrases (α-galactosidase, galactomannan, xylanase and β-glucanase) in nutrition reduction diets for semi-heavy laying hens and its effect on egg performance and egg quality. Four hundred Isa Brown laying hens with 42 to 57 weeks of age were distributed in an entirely random experiment with five treatments and 8 repetitions, during five production periods of 21 days. Variables studied: egg production, feed intake, mean egg weight, feed conversion, Haugh unit, percentage of yolk, egg white and albumen, yolk color, eggshell thickness and specific gravity. There was a significant interaction (p < 0.05) between treatments and experimental... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 5.04.03.00-1 enzymes; Monogastrics; Nutrient availability; Performance; Egg quality. |
| Ano: 2014 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/21952 |
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| Scheid,Douglas Leandro; Silva,Rodrigo Ferreira da; Silva,Vanderlei Rodrigues da; Ros,Clovis Orlando Da; Pinto,Marlo Adriano Bison; Gabriel,Márcia; Cherubin,Maurício Roberto. |
| ABSTRACT: Chemical and physical properties of soil can be altered with the successive application of liquid swine manure (LSM), also known as slurry. Therefore, monitoring the impact of LSM is essential to an assessment of the potential agronomic and environmental benefits and risks associated with management practices. The aim of this study was to evaluate the effects of LSM on the chemical and physical attributes of soil under pasture (Cynodon spp.), located in southern Brazil. Four areas were sampled: three areas cultivated with Cynodon spp. pasture with successive applications of 200 m3 ha–1 y–1 of LSM for three, eight and 15 years; and untreated native forest as a reference. The soil attributes evaluated were: organic carbon (OC), active (pH water)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Management of organic residues; Organic carbon; Nutrient availability; Soil compaction; Soil chemistry. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162020000501401 |
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| Maupetit, Agathe; Larbat, Romain; Pernaci, Michaël; Andrieux, Axelle; Guinet, Cécile; Boutigny, Anne-laure; Fabre, Bénédicte; Frey, Pascal; Halkett, Fabien. |
| Foliar pathogens face heterogeneous environments depending on the maturity of leaves they interact with. In particular, nutrient availability as well as defense levels may vary significantly, with opposing effects on the success of infection. The present study tested which of these factors have a dominant effect on the pathogen’s development. Poplar leaf disks of eight maturity levels were inoculated with the poplar rust fungus Melampsora larici-populina using an innovative single-spore inoculation procedure. A set of quantitative fungal traits (infection efficiency, latent period, uredinia size, mycelium quantity, sporulation rate, sporulation capacity, and spore volume) was measured on each infected leaf disk. Uninfected parts of the leaves were analyzed... |
| Tipo: Text |
Palavras-chave: Constitutive defense; Aggressiveness traits; Plasticity; Nutrient availability; Rust fungus. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00652/76405/77443.pdf |
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| Martins,Vanessa; Silva,Douglas Ramos Guelfi; Marchi,Giuliano; Leite,Maurício Cunha Almeida; Martins,Éder de Souza; Gonçalves,Ana Stella Freire; Guilherme,Luiz Roberto Guimarães. |
| The current high price of potassium chloride and the dependence of Brazil on imported materials to supply the domestic demand call for studies evaluating the efficiency of alternative sources of nutrients. The aim of this work was to evaluate the effect of silicate rock powder and a manganese mining by-product, and secondary materials originated from these two materials, on soil chemical properties and on brachiaria production. This greenhouse experiment was conducted in pots with 5 kg of soil (Latossolo Vermelho-Amarelo distrófico - Oxisol). The alternative nutrient sources were: verdete, verdete treated with NH4OH, phonolite, ultramafic rock, mining waste and the proportion of 75 % of these K fertilizers and 25 % lime. Mixtures containing 25 % of lime... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soil acidity; Nutrient availability; Rock powder; Multi-nutrient fertilizer. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000100194 |
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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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| 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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| Schmidt,Fabiana; Knoblauch,Ronaldir. |
| Abstract: The objective of this work was to evaluate changes in the soil chemical properties, nitrogen use efficiency, and grain yield of flood-irrigated rice fields after the addition of poultry manure during five years. Trials were carried out in a randomized complete block design, with three replicates. The treatments were: chemical fertilizers, N-P2O5-K2O; control, no fertilizers; and poultry manure doses, 2.5, 5.0, and 10.0 Mg ha-1. Poultry manure increased soil pH, base saturation, and phosphorus, potassium, calcium, and zinc contents more than the chemical fertilizers. Adding poultry manure to the soil increased N ammonification (35 mg kg-1 NH4 +-N) from the first to the fourth week after rice was sown. The exclusive use of poultry manure was not... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Oryza sativa; Nutrient availability; Organic fertilization. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2020000103900 |
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| Registros recuperados: 34 | |
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