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| Cova,Alide M. W.; Freitas,Fabio T. O. de; Viana,Paula C.; Rafael,Maria R. S.; Azevedo Neto,André D. de; Soares,Tales M.. |
| ABSTRACT The objective of this study was to evaluate the growth and accumulation of ions in lettuce grown in different hydroponic systems and recirculation frequencies. The experimental design was randomized blocks with 8 treatments and 4 replicates. The evaluated hydroponic systems were Nutrient Flow Technique (NFT) and an adapted Deep Flow Technique (DFT), the latter with recirculation frequencies of 0.25, 2 and 4 h. Both systems used fresh water and brackish water. Plant growth, accumulation of inorganic solutes (Na+, K+, Cl- and NO3-) and the correlation between dry matter production and Na+/K+ and Cl-/NO3- were evaluated. The salinity of the water used to prepare the nutrient solution caused decrease in growth and K+ and NO3- levels, and increased... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Soilless cultivation; Lactuca sativa; Salinity; NFT and DFT systems. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662017000300150 |
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