The Influence of Different Cooling Systems on the Microclimate, Photosynthetic Activity and Yield of a Tomato Crops (<i>Lycopersicum esculentum</i> Mill.) in Mediterranean Greenhouses
The purpose of this study was to analyse the effect of different evaporative cooling systems compared to natural ventilation on the microclimate, photosynthetic activity and yield of a tomato crop (<i>Lycopersicum esculentum</i> Mill.) in a spring-summer cycle. In this study, the expendi...
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MDPI AG
2022-02-01
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| Series: | Agronomy |
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| Online Access: | https://www.mdpi.com/2073-4395/12/2/524 |
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| author | María Ángeles Moreno-Teruel Francisco Domingo Molina-Aiz Alejandro López-Martínez Patricia Marín-Membrive Araceli Peña-Fernández Diego Luis Valera-Martínez |
| author_facet | María Ángeles Moreno-Teruel Francisco Domingo Molina-Aiz Alejandro López-Martínez Patricia Marín-Membrive Araceli Peña-Fernández Diego Luis Valera-Martínez |
| author_sort | María Ángeles Moreno-Teruel |
| collection | DOAJ |
| description | The purpose of this study was to analyse the effect of different evaporative cooling systems compared to natural ventilation on the microclimate, photosynthetic activity and yield of a tomato crop (<i>Lycopersicum esculentum</i> Mill.) in a spring-summer cycle. In this study, the expenditure of electricity and water caused by the different refrigeration systems and their economic cost was analysed. The study was carried out in three multi-span greenhouses: (i) a greenhouse with evaporative pads and fans and natural ventilation (PS + NV); (ii) a greenhouse with a fog system and natural ventilation (FS + NV); (iii) a greenhouse only with natural ventilation (NV). The photosynthetic activity was higher in the greenhouse with natural ventilation (14.7 µmol CO<sub>2</sub> m<sup>−2</sup> s<sup>−1</sup>) than in the greenhouse with the pad-fan system (14.6 µmol CO<sub>2</sub> m<sup>−2</sup> s<sup>−1</sup>; without a statistically significant difference) and in the greenhouse with fog system (13.4 µmol CO<sub>2</sub> m<sup>−2</sup> s<sup>−1</sup>; with a statistically significant difference). The production was higher in the greenhouse with the pad-fan system (5.0 kg m<sup>−2</sup>) than in the greenhouse with natural ventilation (4.8 kg m<sup>−2</sup>; without a statistically significant difference) and in the greenhouse with a fog system (4.5 kg m<sup>−2</sup>; with a statistically significant difference). In general, photosynthetic activity and crop production increased as the maximum temperature (and the number of hours of exposure to high temperatures) decreased. It has been observed that the improvement in temperature conditions inside the greenhouses in spring-summer cycles produces increases in the photosynthetic activity of the tomato crop and, consequently, growth in production. The energy and water consumption derived from the use of active-type cooling systems have not been offset by a representative improvement in photosynthetic activity or crop production. |
| first_indexed | 2024-03-09T22:49:41Z |
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| id | doaj.art-b0ae64b6cd69442d9756494b29235adc |
| institution | Directory Open Access Journal |
| issn | 2073-4395 |
| language | English |
| last_indexed | 2024-03-09T22:49:41Z |
| publishDate | 2022-02-01 |
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| series | Agronomy |
| spelling | doaj.art-b0ae64b6cd69442d9756494b29235adc2023-11-23T18:23:30ZengMDPI AGAgronomy2073-43952022-02-0112252410.3390/agronomy12020524The Influence of Different Cooling Systems on the Microclimate, Photosynthetic Activity and Yield of a Tomato Crops (<i>Lycopersicum esculentum</i> Mill.) in Mediterranean GreenhousesMaría Ángeles Moreno-Teruel0Francisco Domingo Molina-Aiz1Alejandro López-Martínez2Patricia Marín-Membrive3Araceli Peña-Fernández4Diego Luis Valera-Martínez5Research Centre CIAIMBITAL, University of Almería, Ctra, de Sacramento, s/n, 04120 Almeria, SpainResearch Centre CIAIMBITAL, University of Almería, Ctra, de Sacramento, s/n, 04120 Almeria, SpainResearch Centre CIAIMBITAL, University of Almería, Ctra, de Sacramento, s/n, 04120 Almeria, SpainResearch Centre CIAIMBITAL, University of Almería, Ctra, de Sacramento, s/n, 04120 Almeria, SpainResearch Centre CIAIMBITAL, University of Almería, Ctra, de Sacramento, s/n, 04120 Almeria, SpainResearch Centre CIAIMBITAL, University of Almería, Ctra, de Sacramento, s/n, 04120 Almeria, SpainThe purpose of this study was to analyse the effect of different evaporative cooling systems compared to natural ventilation on the microclimate, photosynthetic activity and yield of a tomato crop (<i>Lycopersicum esculentum</i> Mill.) in a spring-summer cycle. In this study, the expenditure of electricity and water caused by the different refrigeration systems and their economic cost was analysed. The study was carried out in three multi-span greenhouses: (i) a greenhouse with evaporative pads and fans and natural ventilation (PS + NV); (ii) a greenhouse with a fog system and natural ventilation (FS + NV); (iii) a greenhouse only with natural ventilation (NV). The photosynthetic activity was higher in the greenhouse with natural ventilation (14.7 µmol CO<sub>2</sub> m<sup>−2</sup> s<sup>−1</sup>) than in the greenhouse with the pad-fan system (14.6 µmol CO<sub>2</sub> m<sup>−2</sup> s<sup>−1</sup>; without a statistically significant difference) and in the greenhouse with fog system (13.4 µmol CO<sub>2</sub> m<sup>−2</sup> s<sup>−1</sup>; with a statistically significant difference). The production was higher in the greenhouse with the pad-fan system (5.0 kg m<sup>−2</sup>) than in the greenhouse with natural ventilation (4.8 kg m<sup>−2</sup>; without a statistically significant difference) and in the greenhouse with a fog system (4.5 kg m<sup>−2</sup>; with a statistically significant difference). In general, photosynthetic activity and crop production increased as the maximum temperature (and the number of hours of exposure to high temperatures) decreased. It has been observed that the improvement in temperature conditions inside the greenhouses in spring-summer cycles produces increases in the photosynthetic activity of the tomato crop and, consequently, growth in production. The energy and water consumption derived from the use of active-type cooling systems have not been offset by a representative improvement in photosynthetic activity or crop production.https://www.mdpi.com/2073-4395/12/2/524protected cropsventilationevaporative systemsphotosynthesisyield |
| spellingShingle | María Ángeles Moreno-Teruel Francisco Domingo Molina-Aiz Alejandro López-Martínez Patricia Marín-Membrive Araceli Peña-Fernández Diego Luis Valera-Martínez The Influence of Different Cooling Systems on the Microclimate, Photosynthetic Activity and Yield of a Tomato Crops (<i>Lycopersicum esculentum</i> Mill.) in Mediterranean Greenhouses Agronomy protected crops ventilation evaporative systems photosynthesis yield |
| title | The Influence of Different Cooling Systems on the Microclimate, Photosynthetic Activity and Yield of a Tomato Crops (<i>Lycopersicum esculentum</i> Mill.) in Mediterranean Greenhouses |
| title_full | The Influence of Different Cooling Systems on the Microclimate, Photosynthetic Activity and Yield of a Tomato Crops (<i>Lycopersicum esculentum</i> Mill.) in Mediterranean Greenhouses |
| title_fullStr | The Influence of Different Cooling Systems on the Microclimate, Photosynthetic Activity and Yield of a Tomato Crops (<i>Lycopersicum esculentum</i> Mill.) in Mediterranean Greenhouses |
| title_full_unstemmed | The Influence of Different Cooling Systems on the Microclimate, Photosynthetic Activity and Yield of a Tomato Crops (<i>Lycopersicum esculentum</i> Mill.) in Mediterranean Greenhouses |
| title_short | The Influence of Different Cooling Systems on the Microclimate, Photosynthetic Activity and Yield of a Tomato Crops (<i>Lycopersicum esculentum</i> Mill.) in Mediterranean Greenhouses |
| title_sort | influence of different cooling systems on the microclimate photosynthetic activity and yield of a tomato crops i lycopersicum esculentum i mill in mediterranean greenhouses |
| topic | protected crops ventilation evaporative systems photosynthesis yield |
| url | https://www.mdpi.com/2073-4395/12/2/524 |
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