A Study of Direct Solar Radiation Transmission in Asymmetrical Multi-span Greenhouses using Scale Models and Simulation Models

Soriano, T.; Montero, J.I.; Sánchez-Guerrero, M.C.; Medrano, E.; Antón, Assumpció; Hernández, José Miguel Azañón; Morales, M.I.; Castilla, N.

doi:10.1016/j.biosystemseng.2004.03.006

Cited by 34 publications

(20 citation statements)

References 16 publications

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“…The statistical design was on randomized block. The parral greenhouse was used and other growing conditions such as irrigation and fertilization followed Soriano et al (2004b). The different treatments applied were: 5 mM KCl, 10 mM KCl, 15 mM KCl y 20 mM KCl during the crop cycle.…”

Section: Plant Material Growth Conditions and Sampling Of Tomato Frmentioning

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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Section: Plant Material Growth Conditions and Sampling Of Tomato Frmentioning

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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“…Further improvement of the greenhouse as an energy efficient solar collector is obtained by improving the light transmission of its structure and minimizing reflection losses through the modification of the roof slope. In Southern Europe, considerable enhancement of light transmission has been reached by increasing the roof slope from nearly zero, typical from areas with low rainfall, to values close to 30º which has had a direct effect on crop response in the winter time (Soriano et al, 2004).…”

Section: Maximize and Modify Radiationmentioning

confidence: 99%

“…LCA is applied to the whole production process to identify which parts of the process are more energy consuming and a comprehensive analysis of the environmental impact of tomato production in Southern European unheated greenhouses has been done by Antón (2004). This study considered all the energy and material inputs in the process of tomato production, and the waste or outputs produced through out the process as well.…”

Section: Integral Design Of Energy Efficient Greenhouse Systemsmentioning

confidence: 99%

Innovative Technologies for an Efficient Use of Energy

Bakker¹,

Adams²,

Boulard³

et al. 2008

Acta Hortic.

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Efficient use of energy in greenhouses has been subject of research and development for decades. The final energy efficiency, e.g. the amount of energy used per unit of product, is determined by improvements in energy conversion, reductions in energy use for environmental control and the efficiency of crop production. The new European targets on reduction of CO 2 emission have resulted in a renewed interest in innovative technologies to improve energy efficiency in greenhouses designed for North-as well as South European regions. In this paper an overview of the recent developments is presented from both the Northwest European as well as the Mediterranean perspective. The developments range from new modified covering materials, innovative and energy conservative climate control equipment and plant response based control systems, to integrated energy efficient greenhouse designs.

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“…Subsequently, the seedlings were transplanted to an experimental greenhouse at La Nacla Experimental Station (Motril), near the Granada coast in southern Spain (36º 45'N; 3º 30'W; altitude 130 m). The "parral" greenhouse consisted of three modules having a symmetrical gable roof with a slope of 27º and having an E-W longitudinal orientation (Soriano and al, 2004;Constán-Aguilar and al, 2015). The active environmental control was limited to a heating system by hot-air generators, and a natural ventilation system through wall and roof windows.…”

Section: Materials and Methodology Plant Material Growth Conditions mentioning

confidence: 99%

“…The statistical design was on randomized block. Other growing conditions such as irrigation and fertilization followed (Soriano and al, 2004;Constán-Aguilar and al, 2015). The different treatments applied were: 5 mM KCl, 10 mM KCl y 15 mM KCl as liquid solution from the beginning to the end of the experiment.…”

Section: Materials and Methodology Plant Material Growth Conditions mentioning

confidence: 99%

Assessment of Carbon Metabolism of Cherry Tomato Fruits: How Does Affects Potassium Biofortification During Crop Cycle at Postharvest Storage?

Constán-Aguilar

Romero

Blasco

et al. 2016

ESJ

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In the present work, we evaluate the implementation of a K biofortification programme that increases the dose of this macronutrient in the nutrient solution for growing tomatoes. The aim is assess whether this treatment improves the response of fruits to postharvest for 21 days at 4°C. Three K treatments were applied during the crop cycle of the plants: 5, 10, and 15 mM of KCl. The enzymes involved in carbon metabolism and sugar concentration were studied, both on the day of harvest and after 21 days of storage in cold room at 4°C. Similarly, enzymes related to the metabolism of organic acids as well as their concentration were studied. The application of this supplement, aside from increasing K concentration in the fruits, stimulated the sucrose (Suc) degradation by sucrose synthase (SuSy) activity while increasing fructose (Fruc) and glucose (Gluc) as well as raising malate accumulation induced by the activity of PEPC and MDH enzymes during storage of 21 days at 4°C. The KCl treatments could be related to changes in carbon metabolism and suggest a protective role against cold storage, improving the quality of tomato fruits.

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A Study of Direct Solar Radiation Transmission in Asymmetrical Multi-span Greenhouses using Scale Models and Simulation Models

Cited by 34 publications

References 16 publications

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

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

Innovative Technologies for an Efficient Use of Energy

Assessment of Carbon Metabolism of Cherry Tomato Fruits: How Does Affects Potassium Biofortification During Crop Cycle at Postharvest Storage?

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