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| Registros recuperados: 88 | |
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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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| Torres Flores, Nadia Issaí. |
| La fertilización es un factor determinante en el crecimiento y producción del alcatraz, y la aplicación de N y K es necesaria en cantidades suficientes, ya que son los elementos que mayor demanda el cultivo y cuya deficiencia puede afectar drásticamente el desarrollo, producción y calidad de esta especie. La presente investigación se realizó con el objetivo de evaluar los efectos de dosis de fertilización nitrogenada en etapa vegetativa y dosis de fertilización potásica en etapa reproductiva, en parámetros de crecimiento, fenológicos, de calidad y nutrimentales de dos especies de alcatraz (Zantedeschia albomaculata) cv. Captain Murano y Zantedeschia elliotiana cv. Solar Flare). El experimento se realizó en el Colegio de Postgraduados, Montecillo, Texcoco,... |
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Palavras-chave: Zantedeschia albomaculata; Z. elliotiana; Nitrógeno; Potasio; Etapa vegetativa; Etapa reproductiva; Nitrogen; Potassium; Vegetative stage; Reproductive stage; Edafología; Maestría. |
| Ano: 2013 |
URL: http://hdl.handle.net/10521/2169 |
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| Uyeda,Claudio A.; Miranda,Jarbas H. de; Duarte,Sergio N.; Medeiros,Pedro R. F. de; Dias,Carlos T. dos S.. |
| The potassium ion, present in great amount in the vinasse because it is a monovalent cation, has the characteristic of promoting the dispersion of clay particles, in the same way as the sodium, causing a reduction in the pore space of the soil and, in its turn, reducing its permeability. To evaluate this effect of reduction by application of vinasse to the soil, an experiment was conducted for three different soils, with the objective of evaluating the effect of the application of different doses of vinasse on hydraulic conductivity of saturated soil and verifying its possible chemical changes of these soils. For that, it was used PVC columns (in a scheme of constant head permeameter to obtain the values of hydraulic conductivity of saturated soil), filled... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Clay dispersion; Potassium; Soil permeability. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000400008 |
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| Leite,Kelly N.; Costa,Raimundo N. T.; Crisótomo,João R.; Frizzone,José A.; Marinho,Albanise B.. |
| Water and fertilizer among the production factors are the elements that most restrict the production of cashew. The precise amount of these factors is essential to the success of the crop yield. This research aimed to determine the best factor-product ratio and analyze technical and economic indicators, of productivity of the cashew clone BRS 189 (Anacardium occidentale) to production factors water and potassium. The experiment was conducted from May 2009 to December 2009 in an experimental area of 56.0 m x 112.0 m in the irrigated Curu - Pentecoste, located in the municipality of Pentecoste, Ceará, Brazil. Production factors water (W) and potassium (K) were the independent variables and productivity (Y), the dependent variable. Ten statistical models that... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Anacardiun occidentale; Irrigation; Potassium. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-69162013000400013 |
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| Oliveira,Francisco A; Duarte,Sergio N; Medeiros,José F; Lima,Carlos JGS; Oliveira,Mychelle KT; Silva,Ricardo CP. |
| ABSTRACT Fertigation can be managed using fixed fertilizer doses or by assessing the ionic concentration of soil solution throughout the growing period. This work studied how different fertigation management systems affected sweet pepper yield and quality. The experiment was carried out in greenhouse, in pots. Fertigation was managed according to the crop uptake rate (M1) or by monitoring either the electrical conductivity (M2) or the N and K concentration (M3) in the soil solution. Fertigation management was combined with six N and K doses (0, 50, 100, 150, 200 and 300% of the recommended dose for sweet pepper in the region), in complete blocks at random, with four replications, and treatments in 3x6 factorial. Dry matter accumulation, yield and fruit... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Capsicum annuum; Ionic concentration; Porous cup extractors; Nitrogen; Potassium; Electrical conductivity.. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362017000200235 |
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| RESENDE, A. V. de; MACHADO, C. T. T.; MARTINS, E. de S.; NASCIMENTO, M. T. do; SENA, M. C. de; SILVA, L. de C. R.; LINHARES, N. W.. |
| RESUMO: Três rochas foram avaliadas quanto à capacidade de fornecer potássio para o crescimento inicial do milho, num Latossolo Vermelho-Amarelo argiloso, em condições de casa de vegetação. As rochas biotita xisto, brecha alcalina e ultramáfica alcalina foram moídas (< 0,3 mm) e comparadas à fonte cloreto de potássio, nas doses de 50, 100 e 150 mg kg-1 de K. Uma testemunha sem K e a aplicação isolada das rochas constituíram tratamentos adicionais. Os resultados indicam que há pronta liberação de parte do potássio das rochas, suficiente para atender a demanda das plantas de milho. O extrator Mehlich 1 mostra boa eficiência na predição da disponibilidade de potássio no solo, após a aplicação das rochas. A ultramáfica se destaca por apresentar maior... |
| Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) |
Palavras-chave: Fertilizante alternativo; Rock; Alternative fertilizer.; Adubação; Condicionador do Solo; Milho; Nutrição Vegetal; Potássio; Rocha; Solo; Zea Mays.; Fertilizer application; Potassium; Plant nutrition; Soil; Soil conditioners.. |
| Ano: 2006 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/567446 |
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| Registros recuperados: 88 | |
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