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| Registros recuperados: 39 | |
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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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| 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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| 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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| 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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| 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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| 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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| Bautista Cruz, María Teresa. |
| Con el objeto de estudiar la absorción nutrimental y determinar el potencial osmótico (PO) de la solución nutritiva, óptimo para incrementar la calidad de fruto de chile manzano se desarrolló un experimento factorial en condiciones de hidroponía. Se evaluaron 5 niveles de PO: -0.036, -0.054, -0.072, -0.09 y -0.108 MPa, y dos variedades: Puebla y Zongolica. Se evaluó la concentración de macro y micronutrimentos en la planta, además de algunos aspectos de calidad del fruto como: peso medio del fruto, grosor del pericarpio en la parte del hombro del fruto, firmeza, sólidos solubles totales, ácido ascórbico y acidez titulable. Los frutos que presentaron mejores parámetros de calidad, fueron aquellos a los que se aplicó la solución nutritiva con PO desde... |
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Palavras-chave: Hidroponia; Macronutrimentos; Micronutrimentos; Soilless culture; Macronutrients; Micronutrients; Maestría; Edafología. |
| Ano: 2010 |
URL: http://hdl.handle.net/10521/153 |
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| Bautista Cruz, María Teresa. |
| Con el objeto de estudiar la absorción nutrimental y determinar el potencial osmótico (PO) de la solución nutritiva, óptimo para incrementar la calidad de fruto de chile manzano se desarrolló un experimento factorial en condiciones de hidroponía. Se evaluaron 5 niveles de PO: -0.036, -0.054, -0.072, -0.09 y -0.108 MPa, y dos variedades: Puebla y Zongolica. Se evaluó la concentración de macro y micronutrimentos en la planta, además de algunos aspectos de calidad del fruto como: peso medio del fruto, grosor del pericarpio en la parte del hombro del fruto, firmeza, sólidos solubles totales, ácido ascórbico y acidez titulable. Los frutos que presentaron mejores parámetros de calidad, fueron aquellos a los que se aplicó la solución nutritiva con PO desde... |
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Palavras-chave: Hidroponia; Macronutrimentos; Micronutrimentos; Soilless culture; Macronutrients; Micronutrients; Maestría; Edafología. |
| Ano: 2010 |
URL: http://hdl.handle.net/10521/153 |
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| Flueck, Werner T.; National Council for Scientific and Technical Research (CONICET), Argentina; Institute of Natural Resources Analysis, Universidad Atlantida Argentina; Swiss Tropical Institute, University of Basel; wtf@deerlab.org. |
| The exploitation of natural resources such as forests leads to sustainable forest management (SFM). The key question is how to define and parametrize “sustainable use.” Promoting forest use that conserves spatial characteristics of forest landscapes and the structure and composition of forest stands was proposed as a way of maintaining elements of biodiversity such as species richness and genetic variation. However, to establish the parameter space for sustainable forest use, it is essential to consider the nutrient requirements of forest systems, that is, plants and animals, the need for fertilizer application, and the effects on biogeochemical cycles, a cornerstone of biological evolution and, thus, biodiversity. The use of forest... |
| Tipo: Peer-Reviewed Response |
Palavras-chave: Biogeochemical cycle; Fertilizer; Macronutrients; Micronutrients; Phosphorus; Selenium; Sustainable forest management. |
| Ano: 2009 |
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| Fia,Ronaldo; Boas,Regina B. Vilas; Campos,Alessandro T.; Fia,Fátima R. L.; Souza,Edson G. De. |
| This work aimed to study the agronomic performance and capacity of nutrient removal by bermudagrass (Cynodon spp.) and cattail (Typha sp.) when grown in constructed wetlands systems (CWSs) of vertical and horizontal flow, respectively, used in the post-treatment of swine breeding wastewater (ARS). The average yield of dry matter (DM) of bermudagrass in sections of 60-day interval ranged from 14 to 43 t ha-1, while the cultivated cattail produced in a single cut after 200 days of cultivation between 45 and 67 t ha-1 of DM. Bermudagrass extracted up to 17.65 kg ha-1 d-1 of nitrogen, 1.76 kg ha-1 d-1 of phosphorus, 6.67 g ha-1 d-1 of copper and 54.75 g ha-1 d-1 of zinc. Cattail extracted up to 5.10 kg ha-1 d-1 of nitrogen, 1.07 kg ha-1 d-1 of phosphorus, 1.41... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Macronutrients; Micronutrients; Effluent treatment. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000100013 |
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| Armindo,Robson A.; Coelho,Rubens D.; Teixeira,Marconi B.; Ribeiro Junior,Paulo J.. |
| This study aimed to evaluate the spatial variability of leaf content of macro and micronutrients. The citrus plants orchard with 5 years of age, planted at regular intervals of 8 x 7 m, was managed under drip irrigation. Leaf samples were collected from each plant to be analyzed in the laboratory. Data were analyzed using the software R, version 2.5.1 Copyright (C) 2007, along with geostatistics package GeoR. All contents of macro and micronutrients studied were adjusted to normal distribution and showed spatial dependence.The best-fit models, based on the likelihood, for the macro and micronutrients were the spherical and matern. It is suggest for the macronutrients nitrogen, phosphorus, potassium, calcium, magnesium and sulfur the minimum distances... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Citrus latifolia Tan.; Macronutrients; Micronutrients; Geostatistics. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162012000300007 |
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| Cardoso,Jean C; Ono,Elizabeth O. |
| One of the most important applications of plant tissue culture is mass propagation of ornamental plants. This experiment evaluated the effect of different concentrations of NH4NO3 and KNO3 and BAP on the in vitro growth of orchid hybrid Brassocattleya 'Pastoral'. Seedlings of this orchid hybrid were used as explants and cultivated in medium with mineral salts and vitamins from the MS medium (Murashige & Skoog, 1962), with the macronutrients P, Ca and Mg reduced by half, and with an addition of 25 g L-1 of sucrose, 0.1 g L-1 of myo-inositol and 1.5 g L-1 of activated charcoal. Agar-agar was added (6.5 g L-1) and the pH was adjusted to 5.8. As treatments, four concentrations of the NH4NO3 and KNO3 (2x; 1x; ½ and ¼ MS medium) and three concentrations... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Tissue culture; Macronutrients; Cytokinins; Multiplication; Growth. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362011000300017 |
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| Sánchez,Esteban; Soto-Parra,Juan Manuel; Preciado-Rangel,Pablo; Llanderal,Alfonso; Lao,María Teresa. |
| ABSTRACT The objective of this study was to compute and compare DRIS norms for grafted and non-grafted red bell pepper crops grown in semi arid climate conditions. DRIS norms were computed with 84 samples of first young mature leaves collected during developed stage. The experiment had a completely randomized block design, and the values obtained for each plant and each variable were considered as independent replicates. Thirty-two DRIS norms nutrient ratios and coefficients of variation (CV) were computed from N, P, K, Ca, Mg, Fe, Cu, Zn and Mn analytical results. The ratios P/N and K/N in grafted and non-grafted pepper plants, showed low CV and therefore may play a fundamental role in crop production according with the DRIS norms calculated, since as... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Capsicum annuum; Diagnostic and Recommendation Integrated System; Foliar diagnostic; Leaf analysis; Nutrient ratio; Macronutrients. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362018000300371 |
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| Registros recuperados: 39 | |
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