Response of hydroponic lettuce to aeration, nitrate and potassium in the nutrient solution
Purpose: Floating hydroponic system for lettuce greenhouse production consists of plants inserted in styrofoam platform floating in a 15 cm-tall nutrient solution, which is aerated by some growers while others maintain the solution static. The present investigation had the objective of determining t...
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| Format: | Article |
| Language: | English |
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Taylor & Francis Group
2020-05-01
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| Series: | Acta Agriculturae Scandinavica. Section B, Soil and Plant Science |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1080/09064710.2020.1730430 |
| _version_ | 1827817108588724224 |
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| author | Daniela Alvarado-Camarillo Luis Alonso Valdez-Aguilar José Antonio González-Fuentes Emilio Rascón-Alvarado Fidel Maximiano Peña-Ramos |
| author_facet | Daniela Alvarado-Camarillo Luis Alonso Valdez-Aguilar José Antonio González-Fuentes Emilio Rascón-Alvarado Fidel Maximiano Peña-Ramos |
| author_sort | Daniela Alvarado-Camarillo |
| collection | DOAJ |
| description | Purpose: Floating hydroponic system for lettuce greenhouse production consists of plants inserted in styrofoam platform floating in a 15 cm-tall nutrient solution, which is aerated by some growers while others maintain the solution static. The present investigation had the objective of determining the effect of ${\rm NO}_3^-$-N and K in Romaine lettuce cultivated in floating hydroponic system and the impact of nutrient solution aeration. Materials and methods: Plants were transplanted into 34 L rigid plastic containers with aerated or non-aerated solutions containing either 15/7, 12/8.5 or 12/2.85 meq L−1 of ${\rm NO}_3^-$/K concentration. Results: Aeration of the nutrient solution promoted plant growth, leaf K, P, and Mg, and water uptake, however, photosynthesis and transpiration rates were enhanced under non-aeration conditions. Decreasing N did not affect leaf N uptake and accumulation; however, decreasing K markedly decreased leaf P and K in aerated plants. Despite the higher transpiration and stomatic conductance in non-aerated plants, water uptake was higher in aerated plants. Non-aerated plants exhibited decreased leaf K accumulation. Conclusions: non-aeration or reduction of K concentration of the nutrient solution may be a strategy to reduce leaf K in lettuce; leaf N concentration was unaffected by aeration. |
| first_indexed | 2024-03-12T00:29:44Z |
| format | Article |
| id | doaj.art-fc9eb716deeb4630aa0448df0e1539a6 |
| institution | Directory Open Access Journal |
| issn | 0906-4710 1651-1913 |
| language | English |
| last_indexed | 2024-03-12T00:29:44Z |
| publishDate | 2020-05-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Acta Agriculturae Scandinavica. Section B, Soil and Plant Science |
| spelling | doaj.art-fc9eb716deeb4630aa0448df0e1539a62023-09-15T10:26:25ZengTaylor & Francis GroupActa Agriculturae Scandinavica. Section B, Soil and Plant Science0906-47101651-19132020-05-0170434134810.1080/09064710.2020.17304301730430Response of hydroponic lettuce to aeration, nitrate and potassium in the nutrient solutionDaniela Alvarado-Camarillo0Luis Alonso Valdez-Aguilar1José Antonio González-Fuentes2Emilio Rascón-Alvarado3Fidel Maximiano Peña-Ramos4Universidad Autónoma Agraria Antonio NarroUniversidad Autónoma Agraria Antonio NarroUniversidad Autónoma Agraria Antonio NarroUniversidad Autónoma Agraria Antonio NarroUniversidad Autónoma Agraria Antonio NarroPurpose: Floating hydroponic system for lettuce greenhouse production consists of plants inserted in styrofoam platform floating in a 15 cm-tall nutrient solution, which is aerated by some growers while others maintain the solution static. The present investigation had the objective of determining the effect of ${\rm NO}_3^-$-N and K in Romaine lettuce cultivated in floating hydroponic system and the impact of nutrient solution aeration. Materials and methods: Plants were transplanted into 34 L rigid plastic containers with aerated or non-aerated solutions containing either 15/7, 12/8.5 or 12/2.85 meq L−1 of ${\rm NO}_3^-$/K concentration. Results: Aeration of the nutrient solution promoted plant growth, leaf K, P, and Mg, and water uptake, however, photosynthesis and transpiration rates were enhanced under non-aeration conditions. Decreasing N did not affect leaf N uptake and accumulation; however, decreasing K markedly decreased leaf P and K in aerated plants. Despite the higher transpiration and stomatic conductance in non-aerated plants, water uptake was higher in aerated plants. Non-aerated plants exhibited decreased leaf K accumulation. Conclusions: non-aeration or reduction of K concentration of the nutrient solution may be a strategy to reduce leaf K in lettuce; leaf N concentration was unaffected by aeration.http://dx.doi.org/10.1080/09064710.2020.1730430lactuca sativafloating hydroponic systemleafy vegetablesphotosynthesis ratewater uptake |
| spellingShingle | Daniela Alvarado-Camarillo Luis Alonso Valdez-Aguilar José Antonio González-Fuentes Emilio Rascón-Alvarado Fidel Maximiano Peña-Ramos Response of hydroponic lettuce to aeration, nitrate and potassium in the nutrient solution Acta Agriculturae Scandinavica. Section B, Soil and Plant Science lactuca sativa floating hydroponic system leafy vegetables photosynthesis rate water uptake |
| title | Response of hydroponic lettuce to aeration, nitrate and potassium in the nutrient solution |
| title_full | Response of hydroponic lettuce to aeration, nitrate and potassium in the nutrient solution |
| title_fullStr | Response of hydroponic lettuce to aeration, nitrate and potassium in the nutrient solution |
| title_full_unstemmed | Response of hydroponic lettuce to aeration, nitrate and potassium in the nutrient solution |
| title_short | Response of hydroponic lettuce to aeration, nitrate and potassium in the nutrient solution |
| title_sort | response of hydroponic lettuce to aeration nitrate and potassium in the nutrient solution |
| topic | lactuca sativa floating hydroponic system leafy vegetables photosynthesis rate water uptake |
| url | http://dx.doi.org/10.1080/09064710.2020.1730430 |
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