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	Provedor de dados Colegio de Postgraduados (6) Scientia Agricola (3) Ciência e Agrotecnologia (2) Rev. Bras. Ciênc. Solo (2) R. Bras. Zootec. (2) Engenharia na Agricultura (1) Rev. Ciênc. Agron. (1) Acta biol.Colomb. (1) BJM (1) Braz. J. Plant Physiol. (1) Ciência Rural (1) REA (1) Horticultura Brasileira (1) Phyton (1) Rev. Bras. Bot. (1) AGRIAMBI (1) Mais... Autor Hernández Hernández, Antelma (2) Megda,Marcio Mahmoud (2) Monteiro,Francisco Antonio (2) Novais,Roberto Ferreira (2) Andriolo,Jerônimo Luiz (1) Artur,Adriana Guirado (1) Barros,Cláudia Alessandra Peixoto de (1) Barros,Nairam Félix de (1) Batista,Paulo S. C. (1) Braga Neto,José Antônio (1) Brandão,Joana Angélica C. (1) Camargo,Carlos Eduardo de Oliveira (1) Castro,Gustavo Franco de (1) Cecon,Paulo Roberto (1) Chalfun,Nilton Nagib Jorge (1) Colombo, Gustavo André (1) Cortez,Thiago B. (1) Cruz Lagunas, Blas (1) Cunha,Ananda H. N. (1) Eymar,E (1) Mais... Palavra-chave Nutrient solution (26) Solución nutritiva (6) Maestría (5) Edafología (4) Growth (3) Rendimiento (3) Salinity (3) Yield (3) Brachiaria brizantha (2) Capsicum pubescens (2) Humic substances (2) Mineral nutrition (2) Root (2) Substancias húmicas (2) Abiotic stress (1) Absorción nutrimental (1) Adaptation (1) Al (1) Allium fistulosum L. (1) Biomass production (1) Mais... Tipo do documento Info:eu-repo/semantics/article (19) Info:eu-repo/semantics/other (1) Tesis (1) Ano 2020 (1) 2018 (1) 2016 (3) 2015 (2) 2014 (1) 2013 (1) 2012 (2) 2011 (4) 2010 (2) 2008 (1) 2007 (2) 2005 (2) 2004 (2) 2003 (1) 1998 (1) Mais... País Brazil (18) Mexico (6) Argentina (1) Colombia (1) Idioma Inglês (19) Espanhol (6) Português (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 26 Primeira ... 1 2 ... Última BIOCHEMICAL AND PHYSIOLOGICAL CHARACTERIZATION OF OIL PALM INTERSPECIFIC HYBRIDS (Elaeis oleifera x Elaeis guineensis) GROWN IN HYDROPONICS Acta biol.Colomb. RIVERA MÉNDEZ,YURANY DAYANNA; MORENO CHACÓN,ANDRÉS LEONARDO; ROMERO,HERNÁN MAURICIO. The interspecific hybrid, Elaeis oleifera x Elaeis guineensis (OxG) is an alternative for improving the competitiveness and sustainability of the Latin American oil palm agro-industry, because of its partial resistance to some lethal diseases and also because of the high quality of its oil. A comparative characterization was conducted of the physiological and biochemical performance of seedlings of six OxG hybrids grown in hydroponics. Gas exchange, vegetative growth, protein, sugar and photosynthetic pigment content, and antioxidant system activity were determined. With the exception of gas exchange, the other variables showed significant differences between materials. The ´U1273´ and ´U1737´ materials showed greater vegetative growth with no expression... Tipo: Info:eu-repo/semantics/article Palavras-chave: Adaptation; Growth; Nutrient solution; Plant breeding; Stress. Ano: 2013 URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2013000300005 Sporulation of arbuscular mycorrhizal fungi using Tris-CHl buffer in addition to nutrient solutions BJM Silva,Fábio Sérgio B.; Yano-Melo,Adriana M.; Brandão,Joana Angélica C.; Maia,Leonor C.. The production of inoculum is one of the hindrances in the large scale application of arbuscular mycorrhizal fungi (AMF). The objective of this work was to evaluate the effect of nutrient solutions with or without Tris-HCl buffer, on sporulation of AMF. The experiment was carried out in a greenhouse, using a substrate with sand and vermiculite (1:1 v/v). Fifty spores of Gigaspora margarita, Scutellospora heterogama, and Glomus etunicatum were inoculated in Sorghum vulgare (sorghum) or Panicum miliaceum (fodder millet). The substrate received the following nutrient solutions: Hoagland with 3 muM P (S1); Long Ashton II with 15.9 muM P (S2) and Hoagland with 20 muM P (S3), with or without 50 mM of Tris-HCl buffer (pH 6.5); the control treatment, consisting of... Tipo: Info:eu-repo/semantics/article Palavras-chave: Glomus etunicatum; Gigaspora margarita; Scutellospora heterogama; Inoculum production; Nutrient solution. Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1517-83822005000400004 Optimizing exponential growth of Triticum aestivum by application of the relative addition rate (RAR) technique utilizing a computer-controlled nutrient delivery system Braz. J. Plant Physiol. Pintro,José Carlos; Taylor,Gregory James; Matumoto-Pintro,Paula Toshimi. We conducted experiments designed to assess whether plants can be grown under conditions of low ionic strength simulating natural soil conditions. Wheat (Triticum aestivum, cv. Atlas 66) plants were grown using ten different relative nutrient addition rates (RAR) of nutrients (0.00, 0.06, 0.09, 0.12, 0.15, 0.18, 0.21, 0.24, 0.27, and 0.30 day-1) with a background solution containing 50 µmol.L-1 N and all other essential nutrients in optimal proportions relative to N. The relative growth rate (RGR) of plants over a 19-day experimental period responded directly to RAR (from 0.06 to 0.21 day-1) with a linear slope of 0.56 and an intercept of 0.085 day-1. Solution electrical conductivity (EC) values remained relatively stable over the experimental period. We... Tipo: Info:eu-repo/semantics/article Palavras-chave: Growth; Ionic strength; Nutrient solution; Wheat. Ano: 2004 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1677-04202004000300006 Production of peach grafts under hydroponic conditions Ciência e Agrotecnologia Souza,Aline das Graças; Chalfun,Nilton Nagib Jorge; Faquin,Valdemar; Souza,Ademária Aparecida de. The objective of the present work was to study the feasibility of producing Okinawa rootstocks and peach grafts using a hydroponic system. The study was conducted in two phases. The growth and development of Okinawa rootstocks under hydroponic conditions were determined in the first phase, and in the second phase, the viability of grafting production of peach cultivars Aurora and Diamante associated with different types of rootstocks. The parameters analysed were the time required for 60 to 75% plants to reach the stages of transplanting (15 cm height) and grafting (4 to 6 cm stem diameter), the percentage of sprouting grafts determined 20 days after grafting, and the height of the shoots measured every 7 days until grafts were 40 cm high measured from the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Grafting; Peach; Rootstock 'Okinawa'; Nutrient solution. Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542011000200013 Nutrient and inorganic solute (Na+ and Cl-) content in green onion plants under hydroponic cultivation using brackish water Ciência e Agrotecnologia Souza,Carlos Donato da Silva; Silva,Geronimo Ferreira da; Menezes,Sirleide Maria de; Morais,José Edson Florentino de; Santos Júnior,José Amilton; Silva,Alexsandro Oliveira da. ABSTRACT Cultivation using brackish waters can result in nutritional and metabolic imbalances in several plant species, consequently reducing the production of dry matter (DM) and accumulation of toxic ions (Na+ and/or Cl-) in plants. We evaluated the DM production, and nutrient and inorganic solute (Na+ and Cl-) content in green onion plants (cv. Todo Ano Evergreen - Nebuka) under different levels of nutrient solution salinity in combination with circulation frequencies of this solution. Two experiments were conducted in a hydroponic system, using a completely randomized design, in a 6 × 2 factorial scheme, with five replicates: six levels of nutrient solution salinity (1.5, 3.0, 4.5, 6.0, 7.5, and 9.0 dS m-1) and two solution circulation frequencies... Tipo: Info:eu-repo/semantics/article Palavras-chave: Allium fistulosum L.; Nutrient solution; Salinity; Mineral nutrition. Ano: 2020 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-70542020000100227 Tolerance to salinity of chicory plants grown in hydroponics Ciência Rural Andriolo,Jerônimo Luiz; Madalóz,José Carlos Cazarotto; Godoi,Rodrigo dos Santos; Janisch,Djeimi Isabel; Barros,Cláudia Alessandra Peixoto de. Chicory plants, cv. 'Amarelo' and 'Pão de Açúcar', were grown hydroponically under four NaCl concentrations in the nutrient solution to determine its tolerance to salinity. Sowing was made in rows placed 0.05m apart, on a 0.15m deep sand growing bed placed over fibber cement tiles. After emergence, plants were thinned to a plant density of 1,600plants m-2. A standard nutrient solution was used, with the main composition of, in mmol L-1, 13.5 NO3-; 2.5 NH4+; 1.5 H2PO4-; 1.5 SO4--; 7.5 Ca++; 10.0 K+ and 1.5 Mg++. The control (T1) was the standard nutrient solution, without addition of NaCl. Four salinity levels were compared, by adding 0.697 (T2), 1.627 (T3), 2.556 (T4) and 3.485 (T5)g L-1 of NaCl. The nutrient solution was delivered to plants four times a... Tipo: Info:eu-repo/semantics/article Palavras-chave: Cichorium intybus; Fertigation; Nutrient solution; Salt tolerance. Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782008000400038 Calidad de semilla de tomate (Lycopersicon esculentum Mill.) por efecto de potenciales osmóticos, calcio y podas bajo condiciones de invernadero Colegio de Postgraduados Cruz Lagunas, Blas. Se realizaron dos experimentos en tomate bajo condiciones de hidroponía en invernadero, con el objetivo de evaluar la calidad física y fisiológica de la semilla de cuatro líneas y dos híbridos comerciales, con la aplicación de soluciones nutritivas con potenciales osmóticos de -0.054, -0.072 -0.090 MPa y concentraciones de 3, 6, 9 y 12 meq Ca L-1, con y sin poda. La evaluación de la semilla se llevó a cabo en el Colegio de Postgraduados, Montecillo, Estado de México, del 2 de noviembre de 2004 al 30 de abril de 2005. Se utilizó un diseño experimental de bloques completos al azar con arreglo factorial 6x3x2 para el experimento de PO y 6x4x2 en el experimento de Ca, con cuatro repeticiones. Los factores y sus niveles fueron Variedad híbridos comerciales... Tipo: Tesis Palavras-chave: Poda; Solución nutritiva; Hidroponía; Invernadero; Doctorado; Producción de Semillas; Pruning; Nutrient solution; Hydroponics; Greenhouse. Ano: 2007 URL: http://hdl.handle.net/10521/1553 Producción hidropónica de freesia x hybrida bajo diferentes cubiertas plásticas. Colegio de Postgraduados Miranda Villagómez, Erika. La freesia es una especie florícola poco comercializada en México, con alto potencial como flor de corte, tolera bajas temperaturas, presenta amplia diversidad de colores y su aroma es agradable. En esta investigación se evaluó el efecto de malla negra (25 % transmitancia), malla roja (15 % transmitancia) y cubierta plástica (70 % transmitancia) en el crecimiento, desarrollo y calidad del tallo flora del freesia para corte. También se determinó el efecto de la concentración de la solución nutritiva Steiner (25, 50, 75 y 100 %) bajo malla sombra roja en estas variables. El estudio se llevó a cabo en el Campo Experimental del Colegio de Postgraduados, en Montecillo, México. En ambos experimentos se probaron dos fechas de siembra (22 de septiembre y 18 de... Palavras-chave: Freesia x hybrida; Sistema hidropónico; Solución nutritiva; Crecimiento; Calidad del tallo floral; Malla sombra; Hydroponic system; Nutrient solution; Plant growth; Floral stem quality; Shade net; Fruticultura; Maestría. Ano: 2012 URL: http://hdl.handle.net/10521/1714 Demanda nutrimental y manejo agronómico del cultivo Physalis peruvianum L. Colegio de Postgraduados Gastelum Osorio, Delma Araceli. La uchuva (Physalis peruvianum L.) es una fruta de gran importancia en varios países por sus propiedades medicinales y potencial económico que hacen de la uchuva una alternativa de producción. En México no existe investigación en torno a esta especie sobre su manejo agronómico, suelo, clima, plagas, enfermedades y su demanda nutrimental bajo condiciones hidropónicas. El presente trabajo se realizó con el objetivo de generar información sobre la demanda nutrimental y del efecto de diferente densidad de plantación sobre el rendimiento del cultivo y calidad del fruto en condiciones protegidas y sistema hidropónico. El experimento se realizó bajo el diseño experimental completamente al azar, se evaluó el efecto de la fuerza iónica de la solución nutritiva... Palavras-chave: Physalis peruvianum; Solución nutritiva; Densidad; Rendimiento; Absorción nutrimental; Calidad; Nutrient solution; Plant density; Yield; Nutrient uptake; Quality; Maestría; Edafología. Ano: 2012 URL: http://hdl.handle.net/10521/705 Acidos húmicos y fúlvicos en la producción hidropónica de Chile Manzano (Capsicum pubescens R y P) en invernadero. Colegio de Postgraduados Hernández Hernández, Antelma. Para determinar el efecto de substancias húmicas (SH) en el crecimiento del chile manzano (Capsicum pubescens R y P), en invernadero, se evaluaron tres niveles de presión osmótica de solución nutritiva Steiner (0.54, 0.72 y 0.90 atm) y tres concentraciones de aplicación foliar de substancias húmicas (0.5, 1, 1.5 ml.L-1 de agua de las SH). Las variables medidas fueron: diámetro ecuatorial (DE), diámetro polar (DP), volumen (VOL), grosor de pericarpio (GP), numero de frutos comerciales (NFRC), numero de frutos pequeños (NFRP), número total de frutos (NTOT), rendimiento (RTO), peso seco de fruto (PSFR), firmeza (FIR), sólidos solubles totales (OBRIX), capsaicina (CAPS) y macro y micronutrientes (N, P, K, Ca, Mg y Fe. Al aplicar la solución nutritiva con... Palavras-chave: Substancias húmicas; Solución nutritiva; Capsicum pubescens; Rendimiento; Humic substances; Nutrient solution; Yield; Maestría; Edafología. Ano: 2011 URL: http://hdl.handle.net/10521/381 Desarrollo de plántulas de portainjertos cítricos, en tubetes con diferentes sustratos y soluciones nutritivas. Colegio de Postgraduados Maldonado Peralta, María de los Angeles. En México, por Norma, a partir de 2010 la producción de portainjertos cítricos se tendrá que llevar a cabo en lugares protegidos, debido a la presencia de Huanglongbing (HLB), lo que trae como consecuencia cambios en la producción de plantas en vivero, que involucran el uso de contenedores, soluciones nutritivas, manejo, semilla certificada y sustratos pasteurizados. Con base en lo anterior, esta investigación tuvo como objetivo: Estudiar la germinación de semillas y el desarrollo de plántulas de portainjertos cítricos, en tubetes con diferentes sustratos y soluciones nutritivas, para disminuir el tiempo de trasplante y el momento para injertar. El trabajo se realizó en el Vivero Cazones, Cazones, Ver. La siembra se hizo en tubetes cónicos negros de 180... Palavras-chave: Portainjertos cítricos; Semillas; Sustratos; Solución nutritiva; Citrus rootstocks; Seeds; Substrate; Nutrient solution; Maestría; Edafología. Ano: 2010 URL: http://hdl.handle.net/10521/253 Acidos húmicos y fúlvicos en la producción hidropónica de Chile Manzano (Capsicum pubescens R y P) en invernadero. Colegio de Postgraduados Hernández Hernández, Antelma. Para determinar el efecto de substancias húmicas (SH) en el crecimiento del chile manzano (Capsicum pubescens R y P), en invernadero, se evaluaron tres niveles de presión osmótica de solución nutritiva Steiner (0.54, 0.72 y 0.90 atm) y tres concentraciones de aplicación foliar de substancias húmicas (0.5, 1, 1.5 ml.L-1 de agua de las SH). Las variables medidas fueron: diámetro ecuatorial (DE), diámetro polar (DP), volumen (VOL), grosor de pericarpio (GP), numero de frutos comerciales (NFRC), numero de frutos pequeños (NFRP), número total de frutos (NTOT), rendimiento (RTO), peso seco de fruto (PSFR), firmeza (FIR), sólidos solubles totales (OBRIX), capsaicina (CAPS) y macro y micronutrientes (N, P, K, Ca, Mg y Fe. Al aplicar la solución nutritiva con... Palavras-chave: Substancias húmicas; Solución nutritiva; Capsicum pubescens; Rendimiento; Humic substances; Nutrient solution; Yield; Maestría; Edafología. Ano: 2011 URL: http://hdl.handle.net/10521/381 Sweet grape mini tomato grown in culture substrates and effluent with nutrient complementation REA Cunha,Ananda H. N.; Sandri,Delvio; Vieira,Jonas A.; Cortez,Thiago B.; Oliveira,Thiago H. de. The objective of this study was to evaluate production of Sweet Grape mini tomato (Lycopersicum esculentum Mill.) using culture substrates and nutrient solution sewage effluent, applied by drip irrigation (fertigation). The experiment was conducted at the University of Goiás State (UEG-UnUCET), from June to November 2011 in Anápolis-GO, Brazil. The experimental design was a 2 x 3 factorial arrangement in a randomized complete block design with four repetitions. The plots were made by combining two nutrient solutions, effluent supplemented with mineral fertilizers (EcS); conventional nutrient solution (SnC); in addition three cultivation substrates: 60% of fine sand washed + 40% substrate composed by 20% coconut fiber plus 80% pine bark (S1); 20% coconut... Tipo: Info:eu-repo/semantics/article Palavras-chave: Mini tomato; Nutrient solution; Reuse. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162014000400010 Growth, water consumption and mineral composition of watercress under hydroponic system with brackish water Horticultura Brasileira Lira,Raquele M; Silva,Ênio FF; Silva,Gerônimo F; Soares,Hammady R; Willadino,Lilia G. ABSTRACT The underground water reserves in the semi-arid region present high salinity levels. However, the scarcity of the resource compels the use of this water for several human activities, including agriculture. The aim of this work was to evaluate the use of brackish water for watercress cultivation (Nasturtium officinale) in a hydroponic NFT system (laminar flow of nutrients) and effects on water consumption, growth, yield and nutrient extraction by the plant. We studied six levels of salinity (0.2; 1.2; 2.2; 3.2; 4.2 and 5.2 dS m-1), in a completely randomized experimental design, with four replicates. Salinity was obtained by the addition of NaCl into the local water supply, being these waters used to prepare the nutrient solution and to replace the... Tipo: Info:eu-repo/semantics/article Palavras-chave: Nasturtium officinale; Nutrient solution; NFT system; Salinity. Ano: 2018 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362018000100013 Nutrient levels of the soil solution obtained by means of suction cups in intensive tomato cultivation: (with 5 tables & 1 figure) Phyton Lao,MT; Jiménez,S; Eymar,E; Fernández,EJ. Suction cups are the only viable method to obtain in situ the soil solution along the culture in real time (24 h). The soil solution is the objective criterion to modify the nutrient solution, so that it can be an appropriate tool for fertirrigation management. The nutrient levels of the soil solution must be known to establish the appropriate approach to nutrients management. In this work, levels of pH, EC,NO3-,NH4+, H+2PO4- , K+, Ca2+, Mg2+, Na+ and Cl- of the soil solution of three tomato crops were followed for periods 1995/96 and 1996/97 culture estimated in a trial carried out during two years. Tipo: Info:eu-repo/semantics/article Palavras-chave: Fertirrigation management; Nutrient parameters; Nutrient solution; Tomato production. Ano: 2004 URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-56572004000100003 Response of Dalbergia miscolobium Benth. seedlings, a cerrado tree species, to mineral nutrient supply Rev. Bras. Bot. Sassaki,Regina M.; Felippe,G.M.. (Response of Dalbergia miscolobium Benth. seedlings, a cerrado tree species, to a mineral nutrient supply). The soil under the Brazilian cerrado vegetation is very poor in nutrients. The aim of this study was to investigate the effect of the addition of a nutrient solution in the early growth of D. miscolobium, a typical cerrado tree species, cultivated in cerrado soil. Seeds were germinated in Petri dishes and seven-day old seedlings were transfered to pots containing cerrado soil. These were supplied once a week with a normal, 1/2 or 1/10 strength nutrient solution. Four growth analysis were done over a period of 145 days from seed imbibition, in terms of dry mass, leaf area and carbohydrate and nitrogen contents. Other derived parameters were also... Tipo: Info:eu-repo/semantics/article Palavras-chave: Dalbergia miscolobium; Carbohydrate content; Nitrogen content; Early growth; Nutrient solution. Ano: 1998 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-84041998000100006 Differential Behavior of Young Eucalyptus Clones in Response to Nitrogen Supply Rev. Bras. Ciênc. Solo Ferreira,Eric Victor de Oliveira; Novais,Roberto Ferreira; Pereira,Greice Leal; Barros,Nairam Félix de; Silva,Ivo Ribeiro da. Eucalyptus requires large amounts of nitrogen (N); however, it responds in diverse manners to the application of this nutrient. The aim of this study was to evaluate the differential performance in growth, mineral nutrition, and gas exchanges of N-fertilized Eucalyptus clones. The treatments consisted of two Eucalyptus clones (VM-01 and I-144) and six N application rates (0, 0.74, 2.93, 4.39, 5.85, and 8 mmol L-1 NH4NO3) arranged in a randomized complete block design with five replications. VM-01 had greater plant height and greater height/collar diameter ratio, as well as higher leaf concentrations of all macronutrients and of Cu, Fe, Mo, and Zn. In terms of total and root dry matter production, root/shoot ratio, and collar diameter, as well as stomatal... Tipo: Info:eu-repo/semantics/article Palavras-chave: Gas exchange; Growth; Nutrient solution; Nutritional efficiency. Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832015000300809 Iron Availability in Tropical Soils and Iron Uptake by Plants Rev. Bras. Ciênc. Solo Mielki,Guilherme Furlan; Novais,Roberto Ferreira; Ker,João Carlos; Vergütz,Leonardus; Castro,Gustavo Franco de. ABSTRACT Given the increase in crop yields and the expansion of agriculture in low fertility soils, deficiency of micronutrients, such as iron, in plants grown in tropical soils has been observed. The aim of this study was to evaluate Fe availability and Fe uptake by corn (Zea mays L.) plants in 13 different soils, at two depths. Iron was extracted by Mehlich-1, Mehlich-3, and CaCl2 (Fe-CC) and was fractionated in forms related to low (Feo) and high (Fed) crystallinity pedogenic oxyhydroxides, and organic matter (Fep) using ammonium oxalate, dithionite-citrate, and sodium pyrophosphate, respectively. In order to relate Fe availability to soil properties and plant growth, an experiment was carried out in a semi-hydroponic system in which part of the roots... Tipo: Info:eu-repo/semantics/article Palavras-chave: Mehlich; Corn (Zea mays); Micronutrient; Nutrient solution; Latossolo. Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-06832016000100543 Macronutrients accumulation and growth of pineapple cultivars submitted to aluminum stress AGRIAMBI Mota,Mauro F. C.; Pegoraro,Rodinei F.; Batista,Paulo S. C.; Pinto,Valéria de O.; Maia,Victor M.; Silva,Deivisson F. da. ABSTRACT The objective was to determine the growth and accumulation of macronutrients of two pineapple cultivars submitted to different concentrations of aluminum (Al). For this, a study was conducted in plastic pots containing 4 L of nutrient solution, in a randomized block design, in a 2 x 5 factorial scheme, corresponding to two pineapple cultivars (‘IAC Fantástico’ and ‘Vitória’) and five Al concentrations (0, 21.6, 43.2, 64.8 and 86.4 mg of Al plant-1), with four replicates. The following variables were evaluated: root length, dry matter of root, stem and leaf, stem diameter, number of leaves, chlorophyll content and accumulation of macronutrients at 60 days after treatment. The cv. ‘Vitória’ showed a linear decrease in chlorophyll content, root dry... Tipo: Info:eu-repo/semantics/article Palavras-chave: Al; Toxicity; Tolerance; Nutrient solution. Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016001100978 Nitrogen and potassium supply and the morphogenic and productive characteristics of marandu palisadegrass R. Bras. Zootec. Megda,Marcio Mahmoud; Monteiro,Francisco Antonio. The objective of this work was to study morphogenic characteristics, and dry matter production of roots and shoots of marandu palisadegrass (Brachiaria brizantha cv. Marandu) submitted to combinations of nitrogen and potassium, in a nutritive solution, employing silica as substrate. The experiment was carried out in a greenhouse during the summer. It was used a 5² fractionated factorial scheme with 13 combinations of nitrogen and potassium, which were distributed in a randomized block design, with four replications. The nitrogen × potassium interaction was significant for the number of tillers and leaves, for leaf area, for shoots and root section dry mass, for total length and surface and specific length and surface in the roots. Production of aerial part... Tipo: Info:eu-repo/semantics/article Palavras-chave: Brachiaria brizantha; Leaf; Nutrient solution; Root; Shoot; Tiller. Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982010000800007 Registros recuperados: 26 Primeira ... 1 2 ... Última

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