|
|
|
Registros recuperados: 45 | |
|
|
Nava,Gilberto; Ernani,Paulo Roberto; Sá,Alessandra Aparecida de; Pereira,Adilson José. |
Gypsum does not affect the soil negative charges and maintains sulfate in the soil solution, making it one of the cheapest products to increase Ca activity in soil solution, especially in the deeper soil layers. Higher Ca levels in the soil solution can increase the uptake of this nutrient by apple trees, reducing the risk of physiological disorders caused by Ca deficiency. This study assessed the effect of long-term gypsum application on some soil properties and on the chemical composition of leaves and fruits of an apple cultivar susceptible to fruit disorders associated with low Ca. The experiment was conducted in São Joaquim, in the South of Brazil, from 2001 to 2009. Gypsum rates of 0, 1.0, 2.0 and 3.0 t ha-1 were annually broadcast over the soil... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Downward movement; Cations; Nutritional status; Calcium. |
Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832012000100022 |
| |
|
| |
|
|
Rosolem,Ciro Antonio; van Mellis,Vanessa. |
Both N excess and deficiency may affect cotton yield and quality. It would therefore be useful to base the N management fertilization on the monitoring of the nutritional status. This study investigated the correlations among the following determination methods of the N nutritional status of cotton (Gossypium hirsutum L., var. Latifolia): chlorophyll readings (SPAD-502®, Minolta), specific-ion nitrate meter (Nitrate Meter C-141, Horiba-Cardy®), and laboratory analysis (conventional foliar diagnosis). Samples were taken weekly from two weeks before flowering to the fifth week after the first flower. The experiment was conducted on the Fazenda Santa Tereza, Itapeva, State of São Paulo, Brazil. The crop was fertilized with 40 kg ha-1 N at planting and 0, 30,... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fertilizer; Gossypium hirsutum; Foliar diagnosis; Nutritional status. |
Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832010000500013 |
| |
|
|
Melo,Hidelblandi F. de; Souza,Edivan R. de; Almeida,Brivaldo G. de; Freire,Maria B. G. dos S.; Maia,Fabíola E.. |
ABSTRACT Atriplex nummularia is a halophyte of great importance in the recovery of saline soils and is considered as a model plant to study biosaline scenarios. This study aimed to evaluate biometric parameters, biomass production and the accumulation of ions in A. nummularia grown under abiotic stresses. Cultivation was carried out in a Fluvic Neosol for 100 days, adopting two water regimes: 37 and 70% of field capacity. Plants were irrigated with saline solutions containing two types of salts (NaCl and a mixture of NaCl, KCl, MgCl2 and CaCl2) at six levels of electrical conductivity: 0, 5, 10, 20, 30 and 40 dS m-1, arranged in a 6 x 2 x 2 factorial with 4 replicates, forming 96 plots. At the end of the experiment, plants were divided into leaves, stem... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Salt extraction; Nutritional status; Halophytes; Brazilian semiarid. |
Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000200144 |
| |
|
|
Beckmann-Cavalcante,Márkilla Z.; Amaral,Genilda C.; Silva,Alcimar de S. e; Brito,Leonardo P. da S.; Lima,Augusto M. N.; Cavalcante,Ítalo H. L.. |
ABSTRACT This study aimed to evaluate the effect of nitrogen (N) and potassium (K) fertilization in yield and contents of macronutrients in heliconia plants (Heliconia psittacorum x Heliconia spathocircinata Aristeguieta) cv. Golden Torch. The experiment was set in a randomized block design, in a 4 x 4 factorial, corresponding to N doses (0, 120, 180 and 240 g of N hole-1) and K doses (0, 120, 180 and 240 g of K2O hole-1) with four replicates and five rhizomes per plot, under field conditions. After one year of cultivation, yield (number of flower stems per square meter) and the leaf contents of N, P, K, Ca, Mg and S were determined. The applied N doses did not influence either yield or the leaf contents of the evaluated macronutrients. K fertilization... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Heliconia psittacorum; Floriculture; Fertilization; Nutritional status. |
Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016000400337 |
| |
|
| |
|
|
BRUNETTO,GUSTAVO; MELO,GEORGE WELLINGTON BASTOS DE; TOSELLI,MORENO; QUARTIERI,MAURIZIO; TAGLIAVINI,MASSIMO. |
ABSTRACT Fertilization of temperate fruit trees, such as grapevine ( Vitis spp.), apple ( Malus domestica), and pear ( Pyrus communis) is an important tool to achive maximum yield and fruit quality. Fertilizers are provided when soil fertility does not allow trees to express their genetic potential, and time and rate of application should be scheduled to promote fruit quality. Grapevine berries, must and wine quality are affected principally by N, that regulate the synthesis of some important compounds, such as anthocyanins, which are responsible for coloring of the must and the wine. Fermenation of the must may stop in grapes with low concentration of N because N is requested in high amount by yeasts. An N excess may increase the pulp to peel ratio,... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Macronutrients; Micronutrients; Nutritional status; Production; Quality. |
Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452015000401089 |
| |
|
|
Sachini,Ricardo; Steffens,Cristiano André; Martin,Mariuccia Schlichting de; Schveitzer,Bianca; Fenili,Cristhian Leonardo; Petri,José Luiz. |
Abstract Apple is considered a functional food, since it presents considerable contribution in the supply of antioxidants, vitamins and minerals, and its consumption is related to the prevention of various diseases. However, most cultivars released in recent years have been poorly studied regarding their nutritional properties. The aim of this work was to quantify mineral contents in the skin and flesh, of apple cultivars with potential production in southern Brazil. The apple cultivars evaluated were ‘Fuji Suprema’, ‘Castel Gala’, ‘Lisgala’, ‘Monalisa’, ‘Luiza’, ‘Daiane’, ‘Venice’, ‘Elenise’ and M.10-09 advanced selection, in the 2017/2018 and 2018/2019 seasons. Among evaluated minerals, considering consumption of a fruit of 115 g with skin (except... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Malus domestica; Nutritional status; Food nutrition. |
Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452020000200901 |
| |
|
| |
|
|
Chica Toro,Faber de Jesús; Garzón-González,Jorge M.. |
Abstract The aim of this study focused on the construction of the absorption and extraction curves under an aeroponic system for White chrysanthemum cv. Atlantis White, and therefore, propose the periods of maximum and minimum nutrient accumulation from aboveground, root and total biomass. Vegetative cycle of the plant, measured from the day after transplantation (dat) to aeroponic system, and the first day of court lasted 49 days. Evaluations were carried out each week on plants, in absolute competition. For the average aboveground biomass, three replicates were recorded. To obtain total root biomass only one sample, was measured. Therefore, total biomass in average, had achieved 130.9313 g.plant-1, where 72.26% (94.163 g) corresponded to the aboveground... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Macronutrients; Nutrient balance (plants); Nutritional status; Ornamental species; Plant development stage; Plant nutrition; Plant soil relations. |
Ano: 2018 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122018000100086 |
| |
|
|
Schwarz,Kélin; Vilela-Resende,Juliano Tadeu; Pierozan-Junior,Clovis; Paula,Juliana Tauffer-de; Baier,João Eduardo; de Souza-Silva,Maria Ligia; Brendler-Oliveira,Felipe. |
Abstract In strawberry, potassium fertilization has been little studied, which difficult management strategies for an increasing yield and understanding the use of this nutrient in strawberry crop. The aim of this study was to evaluate the influence of sources and rates of potassium (K) fertilizers on yield, K level and agronomic traits of strawberry cv. Camarosa fruit, carried out under greenhouse conditions. A randomized in a completely block design with four replicates in a factorial arranged 6x3 (six rates of potassium x three sources of potassium fertilizers), was performed. Fertilizers sources used were as follows: potassium sulphate, potassium nitrate and potassium chloride in 0, 60, 120, 180, 240 and 300 kg ha-1 K2O doses. An increasing potassium... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fertilizer application; Nutrient balance (plants); Nutritional status; Plant nutrition; Potassium content in leaves; Potassium extraction. |
Ano: 2018 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-28122018000100114 |
| |
|
|
Schiavo, Jolimar Antonio; UEMS; Martins, Marco Antonio; UENF; Rodrigues, Luciana Aparecida; Instituto Superior de Tecnologia. |
O presente trabalho objetivou avaliar o efeito de fungos micorrízicos arbusculares (FMAs) na nutrição de mudas de acácia (Acacia mangium Willd.), sesbânia (Sesbania virgata (Cav.) Pers.) e eucalipto (Eucalyptus camaldulensis Dehnh.) em casa-de-vegetação, bem como a influência dos FMAs, do monocultivo e/ou consórcio sobre os teores dos nutrientes nas folhas das plantas em cava degradada pela extração de argila. Em casa-de-vegetação, mudas de acácia inoculadas com FMAs tiveram incrementos nos conteúdos de N, P e Zn de 22, 71 e 67%, respectivamente; as de sesbânia, de 39, 49, 56, 24, 105 e 54%, respectivamente para N, P, Ca, Mg, Mn e Zn. Na cava de extração de argila, plantas de acácia consorciadas com sesbânia apresentaram menor teor de Ca nas folhas. Ainda,... |
Tipo: Campo |
Palavras-chave: 5.02.01.07-7 Solos Florestais monocultivo; Consórcio; Estado nutricional; Micorriza; Rizóbio Microbiologia e Bioquímica do Solo single planting; Intercropping; Nutritional status; Mycorrhiza; Rhizobium. |
Ano: 2009 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/1364 |
| |
|
|
Costa, Joao Paulo Ramos; Caputti, Gregory de Paula; Galzerano, Leandro; Silva, Wilton Ladeira da; Ruggieri, Ana Cláudia; Malheiros, Euclides Braga. |
The nutritional status of xaraes palisade grass with SPAD chlorophyll meter and the critical nitrogen sufficiency index (cNSI) in the dry and rainy seasons were assessed. The experiment was conducted in a completely randomized design with four treatments (50, 100, 200 and 400 kg N ha-1), three replicates and two seasons: dry and rainy. All variables had a high nonlinear relationship with their predictors (p < 0.001). Total nitrogen (TN) reached a plateau at doses 262.0 and 514.8 kg of N ha-1 and the concentration of TN in the plant was 1.88 and 1.93% respectively during the rainy and dry season. Relative chlorophyll content (RCC) reached a plateau at 46.05 and 53.65 SPAD units in the rainy and dry seasons, respectively. The production of dry matter (DM)... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fertilization; Urochloa brizantha; Chlorophyll meter; Nutritional status; SPAD.. |
Ano: 2015 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/24854 |
| |
|
| |
|
|
El-Dahshouri, Mohamad Farouk. |
Pear trees cv. Le Conte (Pyrus communis, L.) budded on Pyrus communis rootstock, uniform in vigor, thirteen years old, grown in sandy soil spaced at 4x4 m, under drip irrigation system in a private orchard located at El-Tall El-Kepeer, Ismailia Governorate, Egypt. Trees were foliar sprayed by five mineral iron concentrations (0.0, 250, 500, 1000 and 2000 ppm) as ferrous sulphate (FeSO4.7H2O) form at two times (Mid May and June) during successive seasons 2014 and 2015. This study was conducted with the aim to examine the response of leaf chlorophyll content, active iron, nutrient status, yield components quantity and quality of Le Conte pear trees to foliar feeding of iron concentrations as well as to evaluation the current status of foliar fertilization... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Dr; Plant Nutrition Pear; Fruit yield quantity and quality; Iron foliar Spray; Physical and chemical properties; Nutritional status. |
Ano: 2018 |
URL: http://www.cigrjournal.org/index.php/Ejounral/article/view/4512 |
| |
|
|
Teixeira,Matheus Pozetti; Campos,Cid Naudi Silva; Prado,Renato de Mello; Caione,Gustavo; Mingotte,Fábio Luiz Checchio; Agostinho,Flavia Bastos. |
Abstract The method used to dry plant tissue samples may modify its nutrient content, and results in incorrect diagnostic of crop nutritional status. The hypothesis was that microwave drying method does not affect the nutrient content of leaves neither the interpretation of the results, as compared to oven-drying procedure. In this study we evaluated the effect of microwave drying of eucalyptus (Corymbia Citriodora (Hook.)) and rubber trees (Hevea brasiliensis Muell. Arg.) leaves on dry matter and macronutrient content, as compared to oven drying. The study was performed in a laboratory at the Department of Soils and Fertilizers of Universidade Estadual Paulista “Julio de Mesquita Filho”, UNESP, Jaboticabal-SP-Brazil. The experiments were: one using leaf... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chemical analysis; Dry matter; Nutritional status; Plant material; Plant nutrition. |
Ano: 2017 |
URL: http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S1405-31952017000500555 |
| |
|
|
MOLZ,PATRÍCIA; ELLWANGER,JOEL H.; ZENKNER,FERNANDA F.; CAMPOS,DEIVIS DE; PRÁ,DANIEL; PUTZKE,MARISA T.L.; FRANKE,SILVIA I.R.. |
ABSTRACT This study evaluated the recognition memory and the levels of DNA damage (blood and hippocampus) in undernourished young Wistar rats. The experiment was conducted along 14-week with rodents divided in control group (CG, n=8) and undernourished group (UG, n=12) which was submitted to caloric restriction. Nutritional status for undernutrition was defined by Body Mass Index (BMI) ≤0.45g/cm2 and by weighting the organs/tissue (liver, spleen, intestine, peritoneal fat, kidney and encephalon). The Novel Object Recognition Test assessed recognition memory and the Comet Assay evaluated the levels of DNA damage. Student t test, 2-way ANOVA and Pearson's correlation analysis were used and the significance level was of p<0.05. The UG showed lower BMI and... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: DNA damage; Memory; Nutritional status; Undernutrition; Wistar rats. |
Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000501863 |
| |
|
|
MANTOVANI,CIBELE; PRADO,RENATO M.; PIVETTA,KATHIA F.L.. |
Abstract Phalaenopsis and Dendrobium do not grow and flower well with 100% ammonium (NH4-N); and there are detailed studies on the effects of nitrate (NO3-N) and ammonium ratios on the flowering, but no information about accumulation of other nutrients and the effects of ammonium toxicity on orchids. For this reason, two experiments were carried out with orchids: Phalaenopsis ‘Golden Peoker’ and Dendrobium ‘Valentine’. Six months after acclimatization the plants were transplanted to individual plastic vessels and the treatments consisted of five ratios (%) of nitrate / ammonium (0/100, 25/75, 50/50, 75/25, 100/0). The sources of NO3-N and NH4-N were calcium nitrate and ammonium sulfate, respectively. After 12 months treatment, when the plants were... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nutritional status; Fertigation; Orchidaceae; Ammonium toxicity. |
Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652018000703423 |
| |
|
|
Hippler,Franz Walter Rieger; Boaretto,Rodrigo Marcelli; Teixeira,Luiz Antonio Junqueira; Quaggio,José Antonio; Mattos-Jr,Dirceu de. |
ABSTRACT This study aimed to evaluate the fertiliser sources and application methods of copper (Cu) in citrus trees during the first years of fruit production. Two experiments were set up in an orchard with 3-year-old sweet orange trees, which were applied with three sources of Cu (nitrate, sulfate or EDTA) either via fertigation (Experiment 1) or via foliar sprays (Experiment 2). Regardless of the fertiliser source, Cu application via fertigation was not efficacious to increase the micronutrient concentration in leaves and, consequently, did not affect fruit yield. Conversely, foliar application of Cu, either as nitrate or sulfate, increased this nutrient level in leaves but when applied as copper nitrate, visual phytotoxicity symptoms were verified in... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Micronutrient; Nutritional status; Fertigation; Foliar application; Citriculture. |
Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052018000200365 |
| |
|
|
Li,L.; Zou,C.; Zhou,Z.; Yu,X.. |
Intestinal obstruction leads to blockage of the movement of intestinal contents. After relieving the obstruction, patients might still suffer with compromised immune function and nutritional deficiency. This study aimed to evaluate the effects of Sijunzi decoction on restoring the immune function and nutritional status after relieving the obstruction. Experimental rabbits (2.5±0.2 kg) were randomly divided into normal control group, 2-day intestinal obstruction group, 2-day natural recovery group, 4-day natural recovery group, 2-day treated group, and 4-day treated group. Sijunzi decoction was given twice a day to the treated groups. The concentration of markers was analyzed to evaluate the immune function and nutritional status. The concentration of... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alternative medicine; Herbal medicine; Immune function; Intestinal obstruction; Nutritional status. |
Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-879X2017001100608 |
| |
Registros recuperados: 45 | |
|
|
|