Salinity and flow rates of nutrient solution on cauliflower biometrics in NFT hydroponic system
ABSTRACT The use of brackish water in hydroponic crops represents an alternative for vegetable production. In this context, two experiments were conducted to evaluate the effect of using brackish water to prepare the nutrient solution and replace the evapotranspired depth, applied at different flow...
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Universidade Federal de Campina Grande
2020-03-01
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| Series: | Revista Brasileira de Engenharia Agrícola e Ambiental |
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| author | Hammady R. e Soares Ênio F. de F. e Silva Gerônimo F. da Silva Adiel F. da S. Cruz José A. Santos Júnior Mário M. Rolim |
| author_facet | Hammady R. e Soares Ênio F. de F. e Silva Gerônimo F. da Silva Adiel F. da S. Cruz José A. Santos Júnior Mário M. Rolim |
| author_sort | Hammady R. e Soares |
| collection | DOAJ |
| description | ABSTRACT The use of brackish water in hydroponic crops represents an alternative for vegetable production. In this context, two experiments were conducted to evaluate the effect of using brackish water to prepare the nutrient solution and replace the evapotranspired depth, applied at different flow rates, on cauliflower biometrics in NFT (nutrient film technique) hydroponic system. In both experiments, the experimental design was completely randomized with four repetitions, in a 6 x 2 factorial scheme: six levels of water electrical conductivity (ECw) in interaction with two flow rates of nutrient solution application in the hydroponic channels (1.5 and 2.5 L min-1). In Experiment I, brackish waters with different EC (1.5, 2.5, 3.5, 4.5 and 5.5 dS m-1), obtained by the addition of NaCl in public-supply water (0.2 dS m-1), were used. In Experiment II, the chemical characteristics of brackish waters collected in the semiarid region of Pernambuco were simulated, with EC of 1.67, 3.30, 4.71, 5.88 and 13.84 dS m-1, plus the control (0.2 dS m-1). Increasing salinity reduced cauliflower growth. Flow rate of 1.5 L min-1 promoted the best results of shoot fresh and dry masses, leaf area, number of leaves, plant height and shoot diameter. The best water for cauliflower production was public-supply water and, among the well waters, the best was the calcium sulfate-rich water with EC of 1.67 dS m-1. |
| format | Article |
| id | doaj-art-aff6edaeb69b46bbb4e1f446cbb593db |
| institution | DOAJ |
| issn | 1807-1929 |
| language | English |
| publishDate | 2020-03-01 |
| publisher | Universidade Federal de Campina Grande |
| record_format | Article |
| series | Revista Brasileira de Engenharia Agrícola e Ambiental |
| spelling | doaj-art-aff6edaeb69b46bbb4e1f446cbb593db2025-08-20T03:04:29ZengUniversidade Federal de Campina GrandeRevista Brasileira de Engenharia Agrícola e Ambiental1807-19292020-03-0124425826510.1590/1807-1929/agriambi.v24n4p258-265Salinity and flow rates of nutrient solution on cauliflower biometrics in NFT hydroponic systemHammady R. e Soareshttps://orcid.org/0000-0003-3475-3417Ênio F. de F. e Silvahttps://orcid.org/0000-0002-8652-503XGerônimo F. da Silvahttps://orcid.org/0000-0002-3348-7252Adiel F. da S. Cruzhttps://orcid.org/0000-0002-1182-3817José A. Santos Júniorhttps://orcid.org/0000-0002-1656-7103Mário M. Rolimhttps://orcid.org/0000-0003-2111-3875ABSTRACT The use of brackish water in hydroponic crops represents an alternative for vegetable production. In this context, two experiments were conducted to evaluate the effect of using brackish water to prepare the nutrient solution and replace the evapotranspired depth, applied at different flow rates, on cauliflower biometrics in NFT (nutrient film technique) hydroponic system. In both experiments, the experimental design was completely randomized with four repetitions, in a 6 x 2 factorial scheme: six levels of water electrical conductivity (ECw) in interaction with two flow rates of nutrient solution application in the hydroponic channels (1.5 and 2.5 L min-1). In Experiment I, brackish waters with different EC (1.5, 2.5, 3.5, 4.5 and 5.5 dS m-1), obtained by the addition of NaCl in public-supply water (0.2 dS m-1), were used. In Experiment II, the chemical characteristics of brackish waters collected in the semiarid region of Pernambuco were simulated, with EC of 1.67, 3.30, 4.71, 5.88 and 13.84 dS m-1, plus the control (0.2 dS m-1). Increasing salinity reduced cauliflower growth. Flow rate of 1.5 L min-1 promoted the best results of shoot fresh and dry masses, leaf area, number of leaves, plant height and shoot diameter. The best water for cauliflower production was public-supply water and, among the well waters, the best was the calcium sulfate-rich water with EC of 1.67 dS m-1.http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662020000400258&tlng=enBrassica oleracea var. botrytis L.hydroponicshorticulturebrackish water |
| spellingShingle | Hammady R. e Soares Ênio F. de F. e Silva Gerônimo F. da Silva Adiel F. da S. Cruz José A. Santos Júnior Mário M. Rolim Salinity and flow rates of nutrient solution on cauliflower biometrics in NFT hydroponic system Revista Brasileira de Engenharia Agrícola e Ambiental Brassica oleracea var. botrytis L. hydroponics horticulture brackish water |
| title | Salinity and flow rates of nutrient solution on cauliflower biometrics in NFT hydroponic system |
| title_full | Salinity and flow rates of nutrient solution on cauliflower biometrics in NFT hydroponic system |
| title_fullStr | Salinity and flow rates of nutrient solution on cauliflower biometrics in NFT hydroponic system |
| title_full_unstemmed | Salinity and flow rates of nutrient solution on cauliflower biometrics in NFT hydroponic system |
| title_short | Salinity and flow rates of nutrient solution on cauliflower biometrics in NFT hydroponic system |
| title_sort | salinity and flow rates of nutrient solution on cauliflower biometrics in nft hydroponic system |
| topic | Brassica oleracea var. botrytis L. hydroponics horticulture brackish water |
| url | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-43662020000400258&tlng=en |
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