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	Provedor de dados Horticultura Brasileira (2) Autor Blázquez,María Elena (1) Bremenkamp,Cintia Aparecida (1) Cometti,Nilton Nélio (1) Cristóbal,María Dolores (1) Herrero,Baudilio (1) Martins,Madlles Q (1) Nunes,José Arcanjo (1) Mais... Palavra-chave Hydroponic crop (2) Lactuca sativa L (1) Lycopersicon esculentum (1) Nitrate accumulation (1) No recycling (1) Recycling (1) Shading (1) Yield. (1) Mais... Tipo do documento Info:eu-repo/semantics/article (2) Ano 2014 (1) 2011 (1) País Brazil (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Agronomic parameters assessment in hydroponic tomato crop Horticultura Brasileira Herrero,Baudilio; Blázquez,María Elena; Cristóbal,María Dolores. In this study we present the results of a comparative analysis of nutrient solution (NS) recycling and non-recycling treatments in hydroponic tomato crop. The established aims are to evaluate water consumption, pH and conductivity variation along the productive cycle in both treatments, to establish the differences in fruit yield and to assess the viability of the recycling system. Watering times and drained nutrient solution volume were counted on a daily basis. Emitter and drained water samples from both treatments were analyzed once per week in the Agricultural Institute of Fraisoro (Gipuzkoa). Tomato samples were collected, weighed and measured three times per week once the harvest had started. There was an 8% reduction in water supply; irrigation... Tipo: Info:eu-repo/semantics/article Palavras-chave: Lycopersicon esculentum; Hydroponic crop; No recycling; Recycling; Yield.. Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362014000400385 Nitrate concentration in lettuce leaves depending on photosynthetic photon flux and nitrate concentration in the nutrient solution Horticultura Brasileira Cometti,Nilton Nélio; Martins,Madlles Q; Bremenkamp,Cintia Aparecida; Nunes,José Arcanjo. The nitrate accumulation in plant tissues can occur due to low light availability. However, published studies have not linked nitrate accumulation to photosynthetic photon flux (PPF) measured during the growing period. This study aimed to evaluate the effect of the reduction of photosynthetic photon flux and the concentration of nitrate in the nutrient solution on agronomic characteristics and accumulation of nitrate in lettuce grown in hydroponics. The trial design was entirely randomized in a factorial scheme (4 x 2) with three repetitions, and four shading levels: 0, 30, 50, and 80% and two nitrate levels in nutrient solution: 5 and 10 mmol L-1. The dry matter production decreased directly and linearly with the reduction of light. The lowest level in... Tipo: Info:eu-repo/semantics/article Palavras-chave: Lactuca sativa L; Hydroponic crop; Shading; Nitrate accumulation. Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-05362011000400018 Registros recuperados: 2 Primeira ... 1 ... Última

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