The Effect of Shading Screens on Microclimate of Apple Orchards

Tanny, Josef; Cohen, S.; Grava, A.; Naor, A.; Lukyanov, Victor

doi:10.17660/actahortic.2009.807.11

Cited by 32 publications

(16 citation statements)

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“…Reductions in air temperature were found in other studies using hail nets (Leite et al 2002;Middleton and Mcwaters 2002;Solomakhin and Blanke 2007;Tanny et al 2009). However, some of these results were obtained on only a few days during the cycle.…”

Section: Resultssupporting

confidence: 55%

“…Since the 1950s, several systems with hail nets have been developed, and their use has proven to be effective as an alternative control of hail. Indeed, there has been an intensification of hail net use in horticulture since 2000 in Brazil (Amarante et al 2011;Leite et al 2002), Australia (Middleton and McWaters 2002), Italy (Corollaro et al 2015), Argentina (Dussi et al 2005), Spain (Iglesias and Alegre 2006), Germany (Solomakhin and Blanke 2007), South Africa (Gindaba and Wand 2007), Slovenia (Jakopic et al 2007), and Israel (Tanny 2009). However, information on the effects of hail protection nets on the orchard microclimate is inconsistent and varies with site conditions, the screens used and orchard management.…”

Section: Introductionmentioning

confidence: 99%

“…The interception of solar radiation by such coverage, for example, tends to alter the balance of energy and radiation on plants and, therefore, interferes with the orchard's microclimate, most likely affecting photosynthesis, yield, and fruit quality (Kittas et al 2012;Tanny et al 2009). Microclimate changes in greenhouses tend to modify the water requirement of plants as well as the development of pathogens.…”

Section: Introductionmentioning

confidence: 99%

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Microclimate alterations caused by agricultural hail net coverage and effects on apple tree yield in subtropical climate of Southern Brazil

et al. 2017

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and rainfall were performed. Production was assessed based on the number and weight of fruits per plant. The hail nets reduced PAR by 32.8% and the wind speed by 30%. In contrast, coverage did not alter the air temperature, humidity or rainfall. The yield of apples tends to be higher under hail net and this is more pronounced when one hailstorm event occur. These results are important for researchers, and apple farmers to establish criteria for decision making regarding the implementation of hail net coverage and to develop appropriate management systems for protecting orchards to ensure and improve fruit production. Overall, the effects of long-term micrometeorological factors are essential to perform modeling of agricultural production.

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Section: Resultssupporting

confidence: 55%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Microclimate alterations caused by agricultural hail net coverage and effects on apple tree yield in subtropical climate of Southern Brazil

et al. 2017

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“…Additional factors such as reductions in wind speed, air exchange, evapotranspiration because of lower radiant energy, and reduced leaf wetness may affect air temperatures inside or outside agricultural shields (Tanny, 2013). Our results correspond with earlier studies showing higher air temperatures and lower air humidity underneath various types of shelters (Tanny et al, 2009). …”

Section: Discussionsupporting

confidence: 91%

Protective rain shields alter leaf microclimate and photosynthesis in organic apple production

Kjær¹

2016

Acta Hortic.

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Plastic rain shields reduce the leaf and fruit wetness and protect apple trees against major leaf diseases and hail damage. Shielding the trees may reduce incoming radiation, especially in the ultraviolet (UV) region of the light spectrum, and affect the microclimate and photosynthesis. In July of 2014 and June of 2015, we measured the leaf microclimate and photosynthetic performance using chlorophyll fluorescence and gas exchange in the apple cultivar 'Santana' grown in three treatments. In one treatment the trees were exposed to natural light and sprayed (control), and in two treatments the trees were unsprayed and shielded with a plastic film not permeable to UV-light (UV-) or a plastic film permeable to UV-light (UV+). The light transmittance was reduced in the shielded treatments, protecting the leaves from high solar irradiance during noon on sunny days, and avoiding afternoon depression of photosynthesis. Due to this, the leaf photosynthetic rates were often higher in the protected trees in comparison to the control trees at similar high light intensities, whereas there were no differences between treatments on cloudy days. The effect of the UV+ film on photosynthesis did not differ from the UV-film, except there was a tendency for higher values accompanied with increased light transmittance of the UV+ film. We conclude that a microclimate with more diffused light maintained the photosynthetic yield, despite a lower light level under the rain shields.

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“…Tanny et al (2009) characterised the micro-climate of an apple (Malus ϫ domestica Borkh.) orchard under shading screens in northern Israel, but they did not relate their findings to water-use.…”

mentioning

confidence: 99%

Effect of hail nets on the microclimate, irrigation requirements, tree growth, and fruit yield of peach orchards in Catalonia (Spain)

Girona

Behboudian

Mata

et al. 2012

The Journal of Horticultural Science and Biotechnology

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The Effect of Shading Screens on Microclimate of Apple Orchards

Cited by 32 publications

References 0 publications

Microclimate alterations caused by agricultural hail net coverage and effects on apple tree yield in subtropical climate of Southern Brazil

Microclimate alterations caused by agricultural hail net coverage and effects on apple tree yield in subtropical climate of Southern Brazil

Protective rain shields alter leaf microclimate and photosynthesis in organic apple production

Effect of hail nets on the microclimate, irrigation requirements, tree growth, and fruit yield of peach orchards in Catalonia (Spain)

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