Radiation Transmission Differences in East-West Oriented Plastic Greenhouses

Soriano, T.; Hernández, José Miguel Azañón; Morales, M.I.; Escobar, I.; Castilla, N.

doi:10.17660/actahortic.2004.633.10

Cited by 8 publications

(10 citation statements)

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“…Over the entire fruit production cycle, air temperatures and environmental humidity were measured using four HMP45 probes (Vaisala, Helsinki, Finland) and incident solar radiation was measured using four SKS1110 pyranometer sensors (Skye Instruments, Llandrindod Wells, Powys, UK) located in north–south and east–west areas of the greenhouse as specified by Soriano et al 22 A CR‐10 datalogger (Campbell Sci, Barcelona, Spain) stored the average parameter values for three measurements every 30 min 22…”

Section: Methodscontrasting

confidence: 99%

“…With nine tomato plants per sack, the planting scheme amounted to 3.21 plants m −2 . Other growing conditions such as irrigation and fertilisation were as described previously by Soriano et al 22…”

Section: Methodsmentioning

confidence: 80%

“…Subsequently the seedlings were transplanted into two experimental greenhouses at La Nacla Experimental Station near the Granada coast in southern Spain (36° 45′ N, 3° 30′ W; altitude 130 m; September–June): a low‐technology, improved parral greenhouse and a high‐technology, multispan greenhouse. The improved parral greenhouse consisted of three modules having a symmetrical roof with a roof slope of 27° and having an east–west longitudinal orientation; the total surface area of the greenhouse was 360 m 2 , with a volume of 1980 m 3 22. Active environmental control was limited to a heating system of hot air generators and a natural ventilation system through wall and roof windows.…”

Section: Methodsmentioning

confidence: 99%

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Environmental conditions in relation to stress in cherry tomato fruits in two experimental Mediterranean greenhouses

et al. 2009

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BACKGROUND: Considering the economic importance of tomato and its nutritional benefits to human health, a study was conducted on how different environmental factors (temperature, solar radiation and vapour pressure deficit (VPD)) influence hydrogen peroxide detoxification and several stress indicators in cherry tomato (Solanum lycopersicum cv. Naomi) fruits grown in two experimental Mediterranean greenhouses of parral (low-technology) type and multispan (high-technology) type.

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Section: Methodscontrasting

confidence: 99%

Section: Methodsmentioning

confidence: 80%

Section: Methodsmentioning

confidence: 99%

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Environmental conditions in relation to stress in cherry tomato fruits in two experimental Mediterranean greenhouses

et al. 2009

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“…Over the entire fruit production cycle, air temperatures and environmental humidity were measured using four HMP45 probes (Vaisala, Helsinki, Finland) and incident solar radiation was measured using four pyranometer sensors (model SP1110 Pyranometer sensor; Skye Instruments, Llandrindod Wells, Powys, UK), and four quantum sensor (model SKP215 Quantum sensor) situated in north-south direction for the integration of differences registred in the measurements across the grennhouse section as specified Soriano et al (2004a). A datalogger (Campbell Sci CR-10; Barcelona, Spain) stored the average values for three measurements every 30 min (Soriano et al, 2004a).…”

Section: Environmental Parametersmentioning

confidence: 99%

“…A datalogger (Campbell Sci CR-10; Barcelona, Spain) stored the average values for three measurements every 30 min (Soriano et al, 2004a).…”

Section: Environmental Parametersmentioning

confidence: 99%

The Effect of Potassium Biofortification Over Yield and Nutritional Quality of Cherry Tomato Fruits

Constán-Aguilar¹,

Leyva²,

Romero³

et al. 2015

AJAFST

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Aims: To assess the effect of a biofortification programme with different doses of K as KCl form during the crop cycle cherry tomato plant over production and fruit quality.Methods: Cherry tomatoes (Solanum lycopersicum L. cv. AsHiari grafted on cv. Maxifort rootstock) were grown in an experimental greenhouse at La Nacla Experimental Station (Granada, Motril) The different treatments applied were: 5, 10, 15 and 20 mM KCl during the crop cycle. Cherry tomato fruits were sampled at 20, 24 and 29 weeks after transplant.Results: i) 20 WAT: showed a higher K concentration, especially with treatments 15 and 20 mM KCl, antioxidant capacity parameters were improved with these doses although they did not significantly increase the organoleptic qualities. β-carotene increased proportionally to the application of growing K doses applied. ii) 24 and 29 WAT: The proposed biofortification program improved the antioxidant capacity of tomato fruit with increasing doses of KCl expecially at 24 WAT, although they had lower K content than those collected in the 20 WAT. Despite not show significant differences between treatments, the organoleptic qualities were improved in these samplings.Conclusion: At 20 WAT, with the treatments 15 and 20 mM KCl, K concentration in tomato fruits increases and does not endangers production. Overall, for the different samplings studied, these doses are those that improve the parameters that determine the quality of tomato fruits. The consumption of these tomato fruits could be of great nutritional value and would be a health benefit.

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Antioxidant content and ascorbate metabolism in cherry tomato exocarp in relation to temperature and solar radiation

et al. 2006

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Considering the economic importance of the tomato and its nutritional benefits to human health, a study was made of how two different environmental factors (temperature and overall solar radiation) influence the nutritional quality of cherry tomatoes during the plant full production cycle. Solanum lycopersicum L. cv. Naomi plants were grown in an experimental greenhouse. Three fruit samples were taken over the full production period: first sampling at the beginning of harvest (7 January 2004), second at mid-harvest (22 March 2004) and third at harvest end (30 May 2004). Values for temperature and overall accumulated solar radiation peaked at a maximum in the third sampling, without lowering the yield with respect to previous samplings. Regarding the antioxidant activity in the exocarp fraction of the cherry tomato fruits, the results showed that the increase in temperature and solar radiation diminished the lycopene and β-carotene contents in the third sampling, inducing defective pigmentation (sunscald). This occurred simultaneously with an increase in lipid peroxidation during the third sampling, quantified as lipoxygenase activity and malondialdehyde content. Finally, in relation to ascorbate metabolism, the higher temperatures and stronger solar radiation at the third sampling increased the oxidation of reduced ascorbate (AsA) due to intensified ascorbate peroxidase (APX) and ascorbate oxidase (AO) activities and a depression of the enzyme dehydroascorbate reductase (DHAR). In conclusion, the results indicate that despite the oxidation of AsA by APX and AO, the minimal regeneration of the latter, together with the greater lipid peroxidation with increasing temperature and solar radiation in the greenhouse, explained the lower content of antioxidants in the exocarp and therefore the loss of nutritional quality of the cherry tomato fruits grown under these conditions.

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Radiation Transmission Differences in East-West Oriented Plastic Greenhouses

Cited by 8 publications

References 0 publications

Environmental conditions in relation to stress in cherry tomato fruits in two experimental Mediterranean greenhouses

Environmental conditions in relation to stress in cherry tomato fruits in two experimental Mediterranean greenhouses

The Effect of Potassium Biofortification Over Yield and Nutritional Quality of Cherry Tomato Fruits

Antioxidant content and ascorbate metabolism in cherry tomato exocarp in relation to temperature and solar radiation

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