produção hidropônica de batata em diferentes concentrações de solução nutritiva e épocas de cultivo potato hydroponical production in different concentrations of nutrient solution and growing seasons

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ID: 189659
2007
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Ranked #14 of 193 articles by views in proc - the fourth ieee workshop on software technol for future embedded and ubiquitous syst, seus 2006 andthe second int workshop on collaborative comput, integr, and assur, wccia 2006

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Abstract
Os objetivos deste trabalho foram avaliar a eficiência fotossintética e a produção hidropônica de minitubérculos de batata, em função das concentrações da solução nutritiva e das épocas de cultivo. O experimento foi conduzido em telado, em sistema hidropônico fechado com areia como substrato, durante os cultivos de outono e primavera de 2005. As concentrações da solução nutritiva de 0,5, 1, 1,5, 2 e 2,5 dS m-1 constituíram os tratamentos, dispostos em delineamento inteiramente casualizado, com três repetições. Foram determinados: a massa de matéria seca total da parte aérea e de tubérculos; a massa de matéria fresca e o número de tubérculos; a eficiência fotossintética e os índices de área foliar e de colheita. A diluição da concentração da solução nutritiva pode ser utilizada em sistema hidropônico fechado, com areia como substrato, sem prejuízos para a produção de tubérculos. A eficiência fotossintética atinge maiores valores no plantio de primavera e depende da concentração da solução nutritiva.
The objectives of this work were to evaluate photosynthetic efficiency and hydroponic production of potato minitubers, in different concentrations of nutrient solution and growing seasons. The experiment was carried out inside a screenhouse, in a closed hydroponic system with sand as growing media, during fall and spring of 2005. The nutrient solution concentrations of 0.5, 1, 1.5, 2 and 2.5 dS m-1 were compared as treatments, in a completely randomized experimental design, with three replications. Total, shoot and tuber dry mass, tuber fresh weight and number, photosynthetic efficiency and indexes of leaf area and harvest were determined. Tuber yield is not affected by reducing nutrient solution concentration in a closed hydroponic system, with sand as growing media. Photosynthetic efficiency is maximized during spring growing season and depends upon nutrient solution concentration.
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Authors ;Douglas Renato Muller;Dilson Antônio Bisognin;Jerônimo Luiz Andriolo;Jacso Dellai;Francis Copetti
Journal proc - the fourth ieee workshop on software technol for future embedded and ubiquitous syst, seus 2006 andthe second int workshop on collaborative comput, integr, and assur, wccia 2006
Year 2007
DOI
10.1590/S0100-204X2007000500006
URL
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2007000500006
Keywords
fertigation photosynthetic efficiency

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