Effect of near-infrared-radiation reflective screen materials on ventilation requirement, crop transpiration and water use efficiency of a greenhouse rose crop

Stanghellini, C.; Dai, Jianfeng; Kempkes, F.L.K.

doi:10.1016/j.biosystemseng.2011.08.002

Cited by 34 publications

(30 citation statements)

References 24 publications

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“…Effects of NIR reflectance can easily be overestimated while the crop itself has also rather good NIR reflection properties. (Stanghellini, 2011). In Figure 6 the effect of cooling requirement of the month July is presented as a cyclic average.…”

Section: Phalaenopsis Flower Production (Cold Phase)mentioning

confidence: 99%

Feasibility study thin glasses for greenhouse roof designs

Hemming¹,

Technologie²,

Mohammadkhani³

et al. 2018

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Section: Phalaenopsis Flower Production (Cold Phase)mentioning

confidence: 99%

Feasibility study thin glasses for greenhouse roof designs

Hemming¹,

Technologie²,

Mohammadkhani³

et al. 2018

Self Cite

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“…cerasiforme), round, similar to a cherry juicy and meaty berry, red when ripe, bigger than 1.5cm in diameter (SILVA & GIORDANO, 2000), has an excellent consumer acceptance due to its high sweetness (PRECZENHAK et al, 2014), among other organoleptic characteristics superior to the traditional tomato fruits (PINHEIRO, 2016). In addition, market value of the cherry tomato is, on average, two to three times higher than other varieties (ARAUJO et al, 2013), which causes great interest from greenhouse producers (SOARES et al, 2005) being a growing and promising market in Brazil (PINHEIRO, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…The type of material used as covering in greenhouses has important role for defining the microclimate according to its transmissivity (FINCH et al, 2004), also affecting other energy balancecomponents, as sensible and latent heatflows (STANGHELLINI et al, 2011), as well as transpirations and photosynthetic processes (FERRARI & LEAL, 2015). Currently, new materials have been developed in order to promote greater quality of the solar radiation transmitted into the greenhouses.…”

Section: Introductionmentioning

confidence: 99%

Cherry tomato yield in greenhouses with different plastic covers

2017

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The objective of the present study was to evaluate the influence of different plastic covers on microclimate and cherry tomato yield in greenhouses. The experiments were carried out in Piracicaba, state of São Paulo (Brazil), during three growing periods (2008/2009/2010). A greenhouse was divided in: Environment I (EI) - covered with plastic film anti-UV and thermo-reflective shading screen, and Environment II (EII) - covered with diffusive plastic film; monitored with automatic weather sensors; and cultivated with cherry tomato (‘Sweet Grape’ and ‘Sweet Million’). Use of diffusive plastic in greenhouses provides a better inside distribution of solar energy without causing major changes in air temperature and relative humidity, resulting in higher yield (kg plant-1), fruits quantity (number plant-1) and fruits average weight than those obtained under thermo-reflective shading screen.

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“…LAKSO et al (1984) e PAPADOPOULOS & HAO (1997) citaram valores de saturação entre 700 e 1.500 µmol s -1 m -2 , em função do genótipo da cultivar de tomateiro estudado. Portanto, o uso fixo da tela termorrefletora, em determinados casos, pode se tornar prejudicial (STANGHELLINI et al, 2011), de forma que seu manejo adequado deve ser realizado visando a prover condições microclimáticas mais favoráveis ao desenvolvimento da cultura.…”

Section: Introductionunclassified

Uso de tela termorrefletora em ambientes protegidos para cultivo do tomateiro

Ferrari

Leal

2015

Eng. Agríc.

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RESUMO: O emprego de telas termorrefletoras, como forma de limitar o aumento da temperatura do ar em ambientes protegidos, deve ser manejado, a fim de evitar a redução excessiva da radiação solar, dada sua importância sobre o desenvolvimento e a produção de hortaliças como o tomateiro. Nesse contexto, os objetivos do trabalho foram comparar os microclimas entre ambientes protegidos cultivados com tomateiro, sendo um coberto somente com polietileno de baixa densidade (PEBD) reforçado e outro coberto com PEBD reforçado associado a uma tela termorrefletora aluminizada retrátil, sob condições de manejo, e avaliar sua adequação às condições climáticas recomendadas à cultura do tomateiro pela bibliografia consultada. O experimento foi conduzido no município de Rio das Pedras-SP, entre 1º-08-11 e 21-01-12. A tela termorrefletora foi empregada somente em dias de céu límpido, entre as 11h e as 16h. Foram coletados dados de temperatura e umidade relativa do ar, radiação solar global (Qs) e radiação fotossinteticamente ativa (RFA) no interior de ambos os ambientes protegidos, e dados de temperatura do ar no ambiente externo. O emprego da tela termorrefletora aluminizada reduziu significativamente os valores médios de Qs, RFA e a temperatura do ar, ao passo que elevou os valores de umidade relativa do ar. O microclima do ambiente com tela adaptou-se melhor às condições climáticas consideradas adequadas pela bibliografia para o cultivo do tomateiro.PALAVRAS-CHAVE: tela termorrefletora; manejo; tomateiro. USE OF THERMOREFLECTIVE SCREENS ON GREENHOUSES FOR TOMATO PRODUCTIONABSTRACT: The use of thermoreflective screens in order to limit air temperature rising in greenhouses must be based on appropriate management to avoid excessive reduction of solar radiation, due to its importance for horticultural crops development and production such as tomato. Hence, this study aims to compare the microclimates of two greenhouses cultivated with tomato and evaluate their suitability to climatic recommendations for tomato crop provided by the consulted bibliography. For this purpose two different structures were assessed: a greenhouse covered only with reinforced low-density polyethylene (LDPE) and a greenhouse covered with reinforced LDPE and retractable thermoreflective screen under management conditions. The experiment was carried out in Rio das Pedras-SP during 08/01/11 to 01/21/12. The thermoreflective screen was used only on sunny days, between 11:00 and 16:00. Air temperature and relative humidity, global radiation and photosynthetically active radiation inside both greenhouses and air temperature of external environment data were collected. The thermoreflective screen significantly reduced the mean values of global solar radiation, photosynthetically active radiation and air temperature, while increased air relative humidity. The microclimate of the greenhouse with thermoreflective screen is best suited to the climatic conditions considered appropriated by the bibliography recommendations for tomato cultivation.

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Effect of near-infrared-radiation reflective screen materials on ventilation requirement, crop transpiration and water use efficiency of a greenhouse rose crop

Cited by 34 publications

References 24 publications

Feasibility study thin glasses for greenhouse roof designs

Feasibility study thin glasses for greenhouse roof designs

Cherry tomato yield in greenhouses with different plastic covers

Uso de tela termorrefletora em ambientes protegidos para cultivo do tomateiro

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