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| Andrade,Sara Adrián López de; Jorge,Renato Atílio; Silveira,Adriana Parada Dias da. |
| The effect of cadmium (Cd) on mycorrhizal association and on shoot and root Cd concentration was investigated in jackbean plants under hydroponic conditions. The treatments consisted of the inoculation of three different species of arbuscular mycorrhizal fungi (AMF), Glomus etunicatum, G. intraradices and G. macrocarpum, and a non-inoculated control, two Cd (0 and 5 µmol L-1) and two P (1 and 10 mg L-1) levels in the nutrient solution. Mycorrhizal colonization, length of AMF extraradical mycelium, guaiacol peroxidase activity in roots, plant growth and root and shoot Cd and P concentrations were determined. Mycorrhizal status did not promote jackbean growth but in most of the cases mycorrhization increased root and shoot Cd concentrations. Cd ions were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Peroxidase; Cd accumulation; Extraradical mycelium; Phytoremediation; Hydroponics. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162005000400013 |
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| 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 |
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| Backes, Fernanda Alice Antonello Londero; UNC; Barbosa, José Geraldo; UFV; Martinez, Hermínia Emília Prieto; UFV; Backes, Rogério Luiz; EPAGRI; Finger, Fernando Luiz; UFV. |
| O diagnóstico nutricional é fundamental para determinar as exigências das plantas quanto aos nutrientes, de forma a se proceder a um manejo adequado, de acordo com a espécie. Assim, para determinar as concentrações e conteúdos nutricionais adequados à produção e qualidade de plantas de lisianto em cultivo hidropônico, instalou-se um experimento onde as plantas foram cultivadas em sistema NFT, em diferentes soluções nutritivas. O experimento foi conduzido, segundo delineamento experimental em blocos casualizados, em esquema fatorial 4x3, totalizando 12 tratamentos, com três repetições. Os tratamentos foram compostos de quatro cultivares (Echo Champagne, Mariachi Pure White, Balboa Yellow e Ávila Blue Rim) e três soluções nutritivas (Teste, Steiner... |
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Palavras-chave: 5.01.00.00-9 Agronomia Eustoma grandiflorum; Hidroponia; Estado nutricional. Eustoma grandiflorum; Hydroponics; Nutritional supply. |
| Ano: 2008 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/5304 |
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| Strassburger, André Samuel; Universidade Federal de Pelotas; Peil, Roberta Marins Nogueira; Universidade Federal de Pelotas; Fonseca, Leandro Andrade da; Universidade Federal de Pelotas; Aumonde, Tiago Zanatta; Universidade Federal de Pelotas; Mauch, Carlos Rogério; Universidade Federal de Pelotas. |
| O objetivo deste trabalho foi quantificar os índices de crescimento, a produção e a distribuição de matéria seca da cultura da abobrinha italiana cultivada em substrato de casca de arroz in natura com solução nutritiva recirculante, em duas épocas de cultivo: primavera-verão de 2005 e verão-outono de 2006, caracterizadas, respectivamente, como períodos de alta e baixa disponibilidades de radiação solar. Cada tratamento correspondeu a uma época de amostragem, sendo a produção de matéria seca quantificada aos 0, 18, 32, 46 e 68 dias após o transplante (DAT) no cultivo de primavera-verão, e aos 0, 15, 29, 43 e 55 DAT no cultivo de verão-outono. A produção de matéria seca foi maior quando a disponibilidade de radiação solar foi mais elevada. Nessa situação... |
| Tipo: Pesquisa de Campo |
Palavras-chave: 5.00.00.00-4; 5.01.00.00-9 Cucurbita pepo L.; Produção de matéria seca; Hidroponia; Área foliar; Radiação solar; Análise de crescimento 5.01.03.00-8 Cucurbita pepo L.; Dry matter production; Hydroponics; Leaf area; Solar radiation; Growth analysis. |
| Ano: 2011 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAgron/article/view/5952 |
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| Tucuch Haas, César Jacier. |
| En México, el chile habanero (Capsicum chinense J.) es ampliamente consumido especialmente en los estados de Yucatán, Quintana Roo, Campeche y Tabasco. Su cultivo en el estado de Yucatán ocupa uno de los primeros lugares de importancia en cuanto a la producción de hortalizas, se ubica en segundo lugar después del tomate. En los sistemas hidropónicos la solución nutritiva y el sustrato juegan un papel importante en el desarrollo de las plantas. El objetivo del presente trabajo fue evaluar y determinar la mejor relación amonio/nitrato y granulometría del sustrato para incrementar el rendimiento y calidad del fruto en plantas de chile habanero. La investigación se realizó en los invernaderos del Colegio de Posgraduados Campus Montecillo, México. Como sustrato... |
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Palavras-chave: Chile habanero; Amonio/nitrato; Sustrato; Hidroponía; Habanero pepper; Ammonium/nitrate; Substrate; Hydroponics; Maestría; Edafología. |
| Ano: 2011 |
URL: http://hdl.handle.net/10521/513 |
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| Tucuch Haas, César Jacier. |
| En México, el chile habanero (Capsicum chinense J.) es ampliamente consumido especialmente en los estados de Yucatán, Quintana Roo, Campeche y Tabasco. Su cultivo en el estado de Yucatán ocupa uno de los primeros lugares de importancia en cuanto a la producción de hortalizas, se ubica en segundo lugar después del tomate. En los sistemas hidropónicos la solución nutritiva y el sustrato juegan un papel importante en el desarrollo de las plantas. El objetivo del presente trabajo fue evaluar y determinar la mejor relación amonio/nitrato y granulometría del sustrato para incrementar el rendimiento y calidad del fruto en plantas de chile habanero. La investigación se realizó en los invernaderos del Colegio de Posgraduados Campus Montecillo, México. Como sustrato... |
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Palavras-chave: Chile habanero; Amonio/nitrato; Sustrato; Hidroponía; Habanero pepper; Ammonium/nitrate; Substrate; Hydroponics; Maestría; Edafología. |
| Ano: 2011 |
URL: http://hdl.handle.net/10521/513 |
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| Gallegos Cossío, Daniel. |
| Se estudio el efecto del potencial osmótico (Ψo) de la solución nutritiva sobre la concentración de licopeno en el fruto de tomate, para lo cual se desarrolló un experimento factorial en condiciones hidropónicas en un sistema abierto. Se estudiaron 4 niveles de (Ψo): -0.072, -0.0804, -0.088 y -0.096 MPa, y tres tipos de tomate, saladette, bola y cherry. Se evaluó la concentración de licopeno en el fruto, así como la concentración potasio en hoja y fruto, además del peso de frutos del primer racimo, firmeza del fruto, acidez titulable, sólidos solubles totales y vitamina C. Los frutos que presentaron la mayor concentración de licopeno fueron aquellos a los que se aplicó la solución nutritiva con Ψo de -0.096 MPa. _______________ OSMOTIC POTENTIAL EFFECT... |
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Palavras-chave: Hidroponía; Licopeno; Potasio; Hydroponics; Lycopene; Potassium; Edafología; Maestría. |
| Ano: 2012 |
URL: http://hdl.handle.net/10521/717 |
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| Silva,Daiana Alves da; Esteves,José Antônio de Fátima; Messias,Ueliton; Teixeira,Aurélio; Gonçalves,João Guilherme Ribeiro; Chiorato,Alisson Fernando; Carbonell,Sérgio Augusto Morais. |
| Common bean (Phaseolus vulgaris L.) is frequently grown in weathered soils with low phosphorus (P) availability, and this is one of the main limitations on its production. This study aimed to assess 20 common bean genotypes in a hydroponic system to select the best P concentration for inducing nutritional deficiency and to classify the genotypes in terms of nutrient utilization efficiency. The concentrations of P applied were 8.00, 4.00, 2.00 and 0.05 mg L¹. At 21 days, in the plot subjected to an application of the most severe stress, the 0.05 mg L¹ dose of P, had smaller plant size and early leaf abscission was observed. The 4.00 mg L¹ dose of P was the most efficient in inducing stress for discrimination of cultivars in terms of efficiency of use of P.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Phaseolus vulgaris L.; Phosphorus nutrition; Classification of genotypes for P; Hydroponics; P deficiency. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-90162014000300008 |
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| Guerra E., Guillermo A.; Aguilar Valdes, Alfredo; Cabral Martell, Agustin; Alvarado Martinez, Luis Felipe; Alvarado Martinez, Tomas Everardo; Arras Vota, Ana Maria; Moreno Medina, Salomon. |
| For decades, food security has been a worldwide problem affecting the poorest in order to find a possible solution to this dilemma that not only continues, but constantly grows with the increase in population. Agriculture, as the main food supplier, has evolved and increased its productivity, and has expanded its agricultural frontiers, since previous decades, in its attempts to solve this problem. If predominant conventional agriculture (mainly dedicated to productivity) is complemented with substantial increase of transgenic, organic, agroecological, greenhouse and hydroponic crops, it will be more feasible to avoid the loss of forest, the damage and loss of soils and at the same time diminish food insecurity. Within this context, the agribusiness... |
| Tipo: Journal Article |
Palavras-chave: Food security; Transgenic; Organics; Agro ecological; Hydroponics; Greenhouse; Agribusiness manager.; Agribusiness. |
| Ano: 2011 |
URL: http://purl.umn.edu/99477 |
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| Andriolo,Jerônimo L; Godoi,Rodrigo dos S; Cogo,Clarissa M; Bortolotto,Orcial C; Luz,Gean L da; Madaloz,José Carlos. |
| Lettuce plants, cv. Vera, were grown at five NH4+:NO3- ratios in the nutrient solution in a 0.15 m deep sand growing bed. A standard nutrient solution was used, with the composition of, in mmol L-1, 11.0 NO3-; 1.5 H2PO4-; 6.5 SO4--; 7.5 Ca++; 10.0 K+ and 1.5 Mg++, and, in mg L-1, 0.42 Mn; 0.26 Zn; 0.05 Cu; 0.50 B; 0.04 Mo, and 4.82 chelate Fe. Ammonium nitrate was used to supply NH4+ concentrations of 2.5; 5; 7.5 and 10 mmol L-1, reaching NH4+:NO3- ratios of 0:11 (T1); 2.5:13.5 (T2); 5:16 (T3); 7.5:18.5 (T4) and 10:21 mmol L-1 (T5) as treatments. A completely randomized experimental design was used, with four replications and 20 plants per plot. Four plants of each plot were harvested at 25 days after planting, to determine shoot and root dry mass, shoot... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lactuca sativa; Fertigation; Hydroponics; Ammonium. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362006000300016 |
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| Silva,Diana S. N. da; Venturin,Nelson; Rodas,Cleber L.; Macedo,Renato L. G.; Venturin,Regis P.; Melo,Lucas A. de. |
| ABSTRACT This study analyzed the initial growth of baru in nutrient solutions with individualized omission of mineral nutrients in greenhouse. The experimental design was completely randomized with 13 treatments and four replicates: Complete Hoagland & Arnon solution and with individualized omissions of N, P, K, Ca, Mg, S, B, Cu, Fe, Mn, Mo and Zn. At 60 days the following morphological characteristics were evaluated: height, root collar diameter, number of leaves and number of leaflets. In addition, the Dickson quality index and root/shoot ratio were calculated and root dry matter, shoot dry matter and the contents and accumulations of nutrients in the shoots of the seedlings were analyzed. Analysis of variance of the collected data was performed... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Native forest species; Hydroponics; Lacking nutrient technique. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662016001201101 |
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| Andriolo,Jerônimo L.; Luz,Gean L. da; Witter,Maiquel H.; Godoi,Rodrigo dos S.; Barros,Gisele T.; Bortolotto,Orcial C.. |
| Lettuce plants, cv. Vera, were grown under five salinity levels in a hydroponical experimental set-up using a 0.15 m deep sand growing bed. A standard nutrient solution was used, with the following composition, in mmol L-1: 16.9 NO3-; 2.0 H2PO4-; 1.0 SO4- 4.0 Ca++; 10.9 K+ e 1.0 Mg++, and, in mg L-1, 0.42 Mn; 0.26 Zn; 0,05 Cu; 0,50 B; 0,04 Mo, and 4.82 chelated Fe. The five salinity levels compared as treatments were obtained by varying the concentration of the standard nutrient solution, reaching average electrical conductivities (EC) of 0.80; 1.93; 2.81; 3.73 and 4.72 dS m-1, for T1, T2, T3, T4 and T5, respectively. The nutrient solution at each salinity level was supplied from a reservoir by means of a flooded-type electrical pump, for 15 minutes, at... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lactuca sativa; Fertigation; Hydroponics; Salinity. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362005000400014 |
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| Tapia Castro, Armando. |
| La uchuva (Physalis peruviana L.) es un importante cultivo que posee cualidades medicinales y nutricionales, y es una opción viable de producción y exportación para productores de México, por lo que la investigación se hace necesaria. Entre los temas prioritarios a investigar se tiene formas de propagación, nutrición óptima y ambientes adecuados para su producción. El objetivo de esta investigación fue evaluar el efecto del ambiente, origen de planta y la relación NH4+/NO3- sobre la morfología, rendimiento y calidad fruto en dos estadios de maduración de Physalis peruviana L. El estudio se desarrolló en el Colegio de Postgraduados, Campus Montecillo, México y se utilizó un diseño factorial completamente al azar con cinco repeticiones, donde se tuvieron... |
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Palavras-chave: Relación amonio:nitrato; Semilla; Esqueje; Hidroponia; Calidad; Ratio ammonium:nitrate; Seed; Cuttings; Hydroponics; Quality; Edafología; Maestría. |
| Ano: 2014 |
URL: http://hdl.handle.net/10521/2279 |
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| Soares,Hammady R.; Silva,Ênio F. de F. e; Silva,Gerônimo F. da; Pedrosa,Elvira M. R.; Rolim,Mario M.; Santos,Alexandre N.. |
| The qualitative aspects of water, such as the preparation or replenishment of the nutrient solution, are critical to the success of hydroponic crops. Therefore, the aim of this study was to evaluate the behavior of “Americana” lettuce (cv. Tainá) under increasing levels of saline stress (0.2 - control, 1.2, 2.2, 3.2, 4.2 and 5.2 dS m-1), replenishing the evapotranspiration with brackish water in Experiment I and supply water (0.2 dS m-1) in Experiment II, both used in the preparation of the nutrient solution. In both experiments, the treatments were arranged in a randomized block design, with six treatments and four replicates. Shoot fresh matter, shoot dry matter and leaf area in Experiment I suffered reductions of 15.22, 12.67 and 15.6% per unit increase... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Lactuca sativa L.; Hydroponics; Salinity. |
| Ano: 2015 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662015000700636 |
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| Janisch,Djeimi Isabel; Andriolo,Jerônimo Luiz; Toso,Vinícius; Santos,Kamila Gabriele Ferreira dos; Souza,Jéssica Maronez de. |
| The objective of this research was to determine growth and dry matter partitioning among organs of strawberry stock plants under five Nitrogen concentrations in the nutrient solution and its effects on emission and growth of runner tips. The experiment was carried out under greenhouse conditions, from September 2010 to March 2011, in a soilless system with Oso Grande and Camino Real cultivars. Nitrogen concentrations of 5.12, 7.6, 10.12 (control), 12.62 and 15.12 mmol L-1 in the nutrient solution were studied in a 5x2 factorial randomised experimental design. All runner tips bearing at least one expanded leaf (patent requested) were collected weekly and counted during the growth period. The number of leaves, dry matter (DM) of leaves, crown and root,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fragaria x ananassa; Hydroponics; Propagation; Fertigation. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0006-87052012000300012 |
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| Andriolo,Jerônimo L; Erpen,Lígia; Cardoso,Francieli L; Cocco,Carine; Casagrande,Gustavo S; Jänisch,Djeimi I. |
| In soilless grown strawberry crops, the nitrogen concentration of the nutrient solution affects plant growth and fruit yield and quality. The present research was conducted to determine the effect of nitrogen concentration in the nutrient solution on plant growth and development and fruit yield and quality of this crop. Treatments consisted of five nutrient solutions at nitrogen concentrations of 6.5 (T1), 8.0 (T2), 9.5 (T3), 11.0 (T4) and 12.5 (T5) mmol L-1, in an entirely randomised experimental design with four replications. Ripe fruit yield was determined during the harvest period from June 6th to November 27th, 2009. Number of leaves, shoot and root dry mass and crown diameter were determined at the later date. Number of leaves, shoot and root dry... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Fragaria x ananassa; Hydroponics; Mineral nutrition of plants. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362011000400012 |
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| Registros recuperados: 35 | |
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