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| Registros recuperados: 40 | |
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| Baron,Daniel; Ferreira,Gisela; Rodrigues,João Domingos; Boaro,Carmen Sílvia Fernandes; Macedo,Ana Cláudia. |
| "Araticum-de-terra-fria" (Annona emarginata (Schltdl.) H. Rainer) has been consider a good alternative in rootstock production for the main commercial Annonaceae species. Although this species develops in different soil and climate conditions, there is no understanding by the physiological responses of this species at different nutritional levels. Thus, the objective of this study was to evaluate the influence of different ionic strengths on development of vegetative species known as "Araticum-de-terra-fria". It was evaluated in seedlings grown in different ionic strengths (25% I, 50% I, 75% I and 100% I) of the complete nutrient solution Hoagland and Arnon (1950) nº 2, for 140 days, the following characteristics: Gas Exchange (CO2 assimilation rate,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Annonaceae; Araticum-de-terra-fria; Seedlings; Rootstock; Macronutrients. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452013000200005 |
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| 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 |
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| VEIGA,MILTON DA; DAMBRÓS,REMI NATALIN; DALBÓ,MARCO ANTÔNIO. |
| RESUMO Os atributos do solo estão relacionados com o desenvolvimento e a produção das culturas, tanto anuais como perenes. O presente trabalho teve como objetivo determinar os atributos químicos e físicos do solo três anos após a aplicação de sistemas de manejo para implantação de porta-enxertos de videira, em um Nitossolo Vermelho com textura muito argilosa. Os sistemas de manejo consistiram na confecção ou não de camalhões e/ou de drenos antes da implantação das mudas de porta-enxertos Dog Ridge. Os atributos químicos (pH em água e teores de matéria orgânica e de macronutrientes) foram determinados em amostras coletadas na linha da cultura, nas camadas de 0-0,1; 0,1-0,2; 0,2-0,3 e 0,3-0,4 m de profundidade. Os atributos físicos do solo (teor de argila,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: PH; Organic matter; Macronutrients; Bulk density; Porosity; Penetration resistance; Vitis. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452015000300797 |
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| Balerini,Fabrício; Schwarz,Sérgio Francisco; Bertol,Felipe Dalla-Zen; Martins,Amanda Posselt; Kubiszewski,Tamara Silva; Bissani,Carlos Alberto. |
| Abstract The knowledge on the amount of nutrients exported by citrus fruit is an adequate tool to estimate nutrient demand reposition and this information about mandarin is very scarce. In this context, the objective of this study was to determine the nutrient content and exportation by mandarin fruits harvest, in an orchard managed under organic production system. An experiment was carried out in an organic orchard of adult mandarin trees (23 years), located in Rio Grande do Sul State (Brazil). The total content of macronutrients and micronutrients was determined in the mandarin fruits and the exportation was estimated by average yields in two seasons (2013/2014 and 2014/2015). The average exportation of macronutrient was 3.3, 2.3, 1.3, 0.4 and 0.3 kg... |
| Tipo: Info:eu-repo/semantics/other |
Palavras-chave: Citrus deliciosa; Macronutrients; Micronutrients; Exportation; Recommendation. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-29452020000503002 |
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| Nachtigall,Gilmar Ribeiro; Dechen,Antonio Roque. |
| The nutrient accumulation curves of apple trees are good indicators of plant nutrient demand for each developmental stage. They are also a useful tool to evaluate orchard nutritional status and to estimate the amount of soil nutrient removal. This research aimed at evaluating the seasonality of nutrients in commercial apple orchards during the agricultural years of 1999, 2000, and 2001. Therefore, apple tree leaves and fruits of three cultivars 'Gala', 'Golden Delicious' and 'Fuji' were weekly collected and evaluated for fresh and dry matter, fruit diameter and macronutrient (N, P, K, Ca and Mg) and micronutrient (B, Cu, Fe, Mn, and Zn) concentrations. Leaf and fruit sampling started one or two weeks after full bloom, depending on the cultivar, and ended... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Malus domestica; Macronutrients; Micronutrients; Accumulation. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162006000500012 |
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| García y García,Axel; Dourado-Neto,Durval; Basanta,Maria del Valle; López Ovejero,Ramiro Fernando; Favarin,José Laércio. |
| The temporal variation of cumulative dry matter can be represented by a sigmoidal curve and the temporal variation of nutrient uptake follows this characteristic shape. Therefore, modeling the temporal variation of cumulative dry matter allows estimating nutrient uptake along the crop cycle. The objective of this study was to propose a sine model to estimate dry matter and macronutrient uptake, and to estimate the moments of maximum N and K uptake rates for the rice crop. The field experiment was carried out on a wetland area of Piracicaba, SP, Brazil, consisting of an Humic Haplaquept. The chosen rice variety was IAC 103, a middle season cycle and high yield. Observed variables were dry matter of different plant parts (root, leaf and stem, and panicle)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Modeling; Sine function; Macronutrients. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162003000300011 |
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| 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 |
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| Guedes, Mayara Neves Santos; Universidade Federal de Lavras - UFLA; Abreu, Celeste Maria Patto de; Universidade Federal de Lavras; Maro, Luana Aparecida Castilho; Universidade Federal de Lavras; Pio, Rafael; Universidade Federal de Lavras; Abreu, José Renato de; Universidade Federal de Lavras; Oliveira, João Otávio de; Universidade Federal de Lavras. |
| Sensorial attributes such as color, texture, acidity and nutritional composition are essential quality components for blackberry (Rubus spp.). The mineral content and quality of fruits of different blackberry cultivars produced in Lavras, Southern Minas Gerais, in a tropical climate at an elevation (Cwb, according to Köppen) were analyzed. The analyzed minerals were phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), zinc (Zn), manganese (Mn), copper (Cu) and iron (Fe). Additionally, chemical characteristics, the total acidity (citric acid), pH, soluble solids (°Brix) and vitamin C (ascorbic acid) level, and sensory characteristics, color (L*a*b) and firmness (N) were also evaluated. According to the results, the Choctaw and Xavante blackberry... |
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Palavras-chave: 5.07.01.02-9 Rubus spp.; Micronutrients; Macronutrients; Vitamin C Química Física Físico-Química e Bioquímica dos Alim. e das Mat.-Primas Alimentares. |
| Ano: 2013 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/16630 |
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| Kurita, Flavia Maria Kazue; Instituto de Botânica; Tamaki, Vivian; Instituto de Botânica. |
| In various ecosystems, many plants have been reduced in number or even eliminated from natural habitats, including the endangered ornamental romeliadAlcantareaimperialis(Carrière) Harms. Thein vitro cultureisatool thathas beenusedforconservationof endangered species andwidely usedfor the production ofornamental plants. This study aimed at investigating the influence of different nitrogen concentrations on the growth of plantlets of the bromeliad A. imperialis grown in vitro. Seedlings of A. imperialis were cultured on Murashige and Skoog medium, upplemented with different concentrations of nitrogen (0.00, 3.75, 7.50, 15.00, 30.00, 60.00, 90.00, 120.00, and 175.00 mM) at 30 mmol m-2 s-1, at 12 hour photoperiod and 26±2°C for six months. The results showed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: 2.03.00.00-0 e 2.03.03.01-7 bromeliaceae; Conservation; Endangered; Macronutrients; Nutrition; Ornamental Botânica. |
| Ano: 2014 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/22933 |
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| BÜNDCHEN,MÁRCIA; BOEGER,MARIA REGINA T.; REISSMANN,CARLOS B.; GERONAZZO,KELLY M.. |
| ABSTRACT The purpose of this study was to analyze the seasonal variation in the nutrient and pigment content of leaves from five tree species - of which three are perennial (Cupania vernalis, Matayba elaeagnoides and Nectandra lanceolata) and two are deciduous (Cedrela fissilis and Jacaranda micrantha) - in an ecotone between a Deciduous Seasonal Forest and a Mixed Ombrophilous Forest in the state of Santa Catarina, Brazil. Leaf samples were collected in the four seasons of the year to determine the content of macronutrients (N, K, P, Mg, Ca, S) and photosynthetic pigments (Chla, Chlb, Chltot, Cartot, Chla:Chlb and Cartot:Chltot). The principal component analysis showed that leaf pigments contributed to the formation of the first axis, which explains most... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Chlorophyll; Araucaria forest; Deciduous Forest; Macronutrients. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652016000200467 |
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| Guiraud,Deborah Maria Corrêa; Lenzi,Ervim; Luchese,Eduardo Bernardi; Fávero,Luzia Otília Bortotti. |
| Influence of some environmental variables in the loss of macronutrients N, P, K, from the hydrographic basin of the River Ivaí were analysed. Water samples of the river were monthly collected for five consecutive days during a year. In terms of total intervals of average monthly values and total average values experiment results, in mg L-1, were: N (0.32-3.22 and 1.65); K (0.73-2.69 and 1.38); P (not detected-0.39 and 0.076); COD (0.21-36.0 and 12.8); O2(dis) (1.89-8.40 and 5.43); and temperature (ºC) (16.0-30.8 and 24.6); pH (5.18-8.50 and 7.15). Statistical analysis of data showed that quantity of macronutrient (N, K, P) carried off from the hydrographic basin of the River Ivaí were directly correlated to fluviometric levels (caused by rainfall... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Erosion; Macronutrients; Hydrographic basin; Environment. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132004000400019 |
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| Reissmann,Carlos Bruno; Radomski,Maria Izabel; Quadros,Ruth Maria Bianchini de. |
| Ilex paraguariensis St. Hil. (erva-mate), the mate tea, is a forest tree whose natural distribution in the Brazilian territory embraces the States of Mato Grosso do Sul, Paraná, Santa Catarina and Rio Grande do Sul. Its economical importance is moreover related to tea production. The purpose of this study is to characterize the leaf chemical composition in relation to different plantation and management conditions. Chemical analysis were performed on plants of different ages,in naturally occurring areas, planted stands, and seedbeds. The most remarkable elements observed in the study were P with average values ranging from 0,5 - 3,2 g kg-1 D.W., Mn values from 346 - 3.330 mg kg-1 D.W., and Al values from 167 - 1.235 mg kg-1 D.W. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Macronutrients; Micronutrients; Aluminium; Foliar analysis; Ilex paraguariensis; Erva-mate. |
| Ano: 1999 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131999000200009 |
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| Regiane Cristina Marcato,Sita; Reissmann,Carlos Bruno; Marques,Renato; Oliveira,Edilson de; Taffarel,Angela Daniela. |
| This study was conducted to evaluate the effect of polymer used with different nitrogen and potassium sources on the growth and nutrition of chrysanthemum (Dendranthema grandiforum, var. "Virginal") and on chemical characteristics of substrate. Two substrates were evaluated: 1) composite with 50 % organic soil, 45 % sand, and 5 % composted tobacco; 2) plow layer soil (0-20 cm depth; red oxisol typical dystrophic). The experimental design was a factorial (4x2x2) and included four polymer rates (0, 1, 2, and 4 g kg-1of substrate), two nitrogen ((NH4)2SO4 and (H2N)2CO), and two potassium (KCl and K2SO4) sources. Dry biomass, flower number, and concentration of K, Ca, and Mg were evaluated. Inverse relationships between polymer rates and plant biomass,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Hydrogel; Polyacrylamide; Chrysanthemum; Fertilizer; Macronutrients. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000300002 |
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| Bernini,Elaine; Silva,Maria A. B. da; Carmo,Tania M. S. do; Cuzzuol,Geraldo R. F.. |
| Spatial and temporal variation of the nutrient concentrations in leaves and sediment between the roots of Laguncularia racemosa (L.) Gaertn. f and Rhizophora mangle L. was analyzed in the mangrove forest of the estuary of São Mateus River, Espírito Santo, Brazil. In leaves, the nutrients followed the sequence: N> Ca> K> Mg> S> P> Fe> Mn> Zn> Cu, and there were significant differences between species and sites studied. In general, the levels of K were higher in the dry season compared to the rainy season for both species analyzed while Ca and Cu showed higher concentrations in the rainy season for Laguncularia racemosa. In the sediment, the nutrients followed the sequence: Mg> Ca> Fe> K> Mn> P> Zn> Cu, in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Concentration factor; Macronutrients; Micronutrients; Metals. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202010000300005 |
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| Paredes C,Mario; Becerra V,Viviana; Tay U,Juan. |
| The current Chilean bean (Phaseolus vulgaris L.) collection is about 1110 accessions. To facilitate the characterization of this germplasm a core collection of 246 accessions was formed. Little information exists about the mineral content and other quality traits for those bean genotypes. This information could be useful to determine their quality and to promote its consumption. The objective of this work was to evaluate the variability for macro and micronutrients of a representative bean sample from a Chilean core collection and to compare them with representatives from other races. The results indicated the presence of a wide variability for some macro and micronutrients, such as N, Fe, and Zn. The protein content varied from 183.5 to 259.7 g kg-1, Fe... |
| Tipo: Journal article |
Palavras-chave: Race Chile; Macronutrients; Micronutrients; Core collection. |
| Ano: 2009 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392009000400002 |
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| Saldaña y Hernández,María I; Gómez-Álvarez,Regino; Rivera-Cruz,María del C; Álvarez-Solís,José D; Pat-Fernández,Juan M; Ortiz-García,Carlos F. |
| M.I. Saldaña y Hernández, R. Gómez-Álvarez, M. del C. Rivera-Cruz, J.D. Álvarez-Solís, J.M. Pat-Fernández, and C.F. Ortiz-García. 2014. The influence of organic fertilizers on the chemical properties of soil and the production of Alpinia purpurata. Cien. Inv. Agr. 41(2): 215-224. Organic fertilizers are an important contribution of organic matter that modify the physical, chemical and microbiological characteristics of the soil. To determine the impact of solid and liquid fertilizers on Alpinia purpurata, the nutritional characteristics of the soil and the responses of the plants were evaluated at 40 and 365 days in Medellín and Madero and Ignacio Allende, Tabasco, Mexico. The treatments were compost, vermicompost, fermented manure, Bokashi, liquid humus... |
| Tipo: Journal article |
Palavras-chave: Bokashi; Compost; Fermented manure; Macronutrients; Red ginger; Vermicompost. |
| Ano: 2014 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-16202014000200008 |
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| Calgaroto,Nicéia Spanholi; Nicoloso,Fernando Teixeira; Pereira,Luciane Belmonte; Cargnelutti,Denise; Antes,Fabiane Goldschmidt; Dressler,Valderi Luiz. |
| ABSTRACT: The mineral nutritional homeostasis in response to different concentrations of Hg (0, 25 and 50μM) was evaluated in Pfaffia glomerata plant. The exposure to the highest level of Hg (50µM) caused a decreasing in shoot and root fresh weights of 15.5% and 20%, respectively. Both shoot and root Hg concentrations increased linearly with increasing external Hg concentrations. Ca concentration decreased in shoot only at 50µM Hg, whereas shoot K and Mg concentrations decreased at both 25 and 50µM Hg, when compared to the control. A significant decrease in Cu, Zn, Fe and Mn concentrations in plants exposed to Hg was observed, but most Zn, Mn, and Cu in the roots. On the other hand, P concentration increased in both root and shoot of plants exposed at 25... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Brazilian Ginseng; Nutritional homeostasis; Macronutrients; Micronutrients; Hg toxicity. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000200279 |
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| Ferri,Valdecir Carlos; Rombaldi,Cesar Valmor; Silva,Jorge Adolfo; Pegoraro,Camila; Nora,Leonardo; Antunes,Pedro Luiz; Girardi,Cesar Luiz; Tibola,Casiane Salete. |
| Flesh softening, skin browning and rotting are chief problems during cold storage (CS) of 'Fuyu' Persimmon. We studied the effects of boron (B) and calcium (Ca) sprayed on the trees during three consecutive years, on the development of skin cracks, grooves and browning in persimmon fruit under CS in Farroupilha, RS, Brazil (29°31' south, 51°21' west, about 750 m altitude). A homogeneous orchard area of 0.5 ha was delimitated and three sets of five plants for each treatment were randomly selected. The persimmon trees were sprayed at a 20 day interval, from 15th January until harvest, for three consecutive years, with: T1) water; T2) calcium nitrate at 0.5% (m/v); T3) calcium chloride at 0.5% (m/v); and T4) boron at 0.3% (m/v). The fruit were harvest with... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Diospyrus kaki; Postharvest injuries; Micronutrients; Macronutrients. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782008000800009 |
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| Registros recuperados: 40 | |
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