Effects of shading nets on sunburn and quality of ‘Granny Smith’ apple fruits

Dayioglu, A.; Hepaksoy, Serra

doi:10.17660/actahortic.2016.1139.90

Cited by 7 publications

(4 citation statements)

References 12 publications

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“…One of the most widely reported effects of netting for apples is sunburn incidence. For this reason, crop protection against high radiation and temperature has become one of the main motivations for netting use in regions of the world with high radiation and low hail-risk [2,9,16,79]. Gindaba and Wand [9] compared the responses of "Cripps Pink" and "Royal Gala" apples to the use of shade nets, kaolin application, and evaporative overcooling and reported the most significant reduction of sunburn under 20% black shade nets.…”

Section: Effect Of Photoselective Colored Netting On Disorder Incidenmentioning

confidence: 99%

Photoselective Protective Netting Improves “Honeycrisp” Fruit Quality

Serra

Borghi

Mupambi

et al. 2020

Plants

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High temperatures, wind, and excessive sunlight can negatively impact yield and fruit quality in semi-arid apple production regions. Netting was originally designed for hail protection, but it can modify the light spectrum and affect fruit quality. Here, pearl, blue, and red photoselective netting (≈20% shading factor) was installed in 2015 over a commercial “Cameron Select® Honeycrisp” orchard. Our research objectives were to (1) describe the light quantity and quality under the colored nets compared to an uncovered control and (2) investigate the effect of Photoselective nets on “Honeycrisp” apple quality for two growing seasons. Light transmittance and scattering for each treatment were measured with a spectroradiometer, and samples for fruit quality analyses were collected at harvest. PAR (photosynthetic active radiation), UV, blue, red, and far-red light were lower underneath all netting treatments compared to an uncovered control. The scattered light was higher under the pearl net compared to other colors, while red and far-red light were lower under the blue net. For two consecutive years, trees grown under the photoselective nets intercepted more incoming light than the uncovered trees with no differences among the three colors. In both years, trees under red and blue nets had more sunburn-free (clean) apples than pearl and control. Red color development for fruit was lower when nets were used. Interestingly, bitter pit incidence was lower underneath red nets for both years. Other than red color development, “Honeycrisp” fruit quality was not appreciably affected by the use of netting. These results highlight the beneficial effect of nets in improving light quality in orchards and mitigating physiological disorders such as bitter pit in “Honeycrisp” apple.

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Section: Effect Of Photoselective Colored Netting On Disorder Incidenmentioning

confidence: 99%

Photoselective Protective Netting Improves “Honeycrisp” Fruit Quality

Serra

Borghi

Mupambi

et al. 2020

Plants

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“…Indeed, Blanke (2009) and Solomakhin and Blanke (2010) reported that in green and bi‐colored apples, the high solar radiation can be reduced by using netting, thus the sunburn can be reduced. In previous studies, it was determined that in Granny Smith (Dayioglu & Hepaksoy, 2015), Cripps Pink and Royal Gala (Gindaba & Wand, 2005), Mondial Gala (Iglesias & Alegre, 2006) and Gala and Fuji (Do Amarante et al, 2011) cultivars, that fruit under shade nets had lower sunburn and thus higher marketable fruit was obtained compared fruit from unnetted trees. Tinyane et al (2018) determined that the marketable fruit ratio of the trees under shade nets in “Hass” avocado cultivar was between 85%–95%, and 64% in unnetted trees.…”

Section: Discussionmentioning

confidence: 99%

Bioactive compounds and fruit quality traits of Granny Smith Challenger apple grown under varying shade levels of green protective shade nets

Öztürk

Aydın

Öztürk

2022

Food Processing Preservation

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The aim of the study is to assess the yield, fruit quality, phenolic compounds, and organic acids of the Granny Smith Challenger apple (Malus × domestica Borkh.) grown under protective shade nets. In the study, control (unnetted, T1), shade nets with 15% weave (T2), 20% weave (T3), 35% weave (T4), and 55% weave (T5) were selected as treatments. In both years of the study, yield and % marketable fruit increased significantly as overall % weave resulted in shading increases. The effect of 35% weave on yield and % marketable fruit was more distinct. The highest leaf area was recorded with T5 while the highest trunk cross-section area (6.16 and 6.64 cm 2 plant −1 in 2015 and 2016, respectively) and canopy volume (2.70 and 2.92 m 3 plant −1 ) were obtained in T3 treatment. Mass and diameter of fruit harvested from the T4 treatment (259.8 and 253.8 g, 76.3 and 74.4 mm, 92.5 and 90.3 mm in 2015 and 2016, respectively) were significantly higher than fruit of the other treatments. Fruit firmness under the protective

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“…Systems of permanent protection of the orchards, which have a more hybrid nature, such as shading nets or partial plastic covers, could be the most efficient solution to meet the mango growers' needs. Additionally, they can serve a double purpose which is partially protecting the plants from cold temperatures and mechanical damage during winter and reducing solar irradiation of fruits during summer to prevent sunburn (Dayioglu, and Hepaksoy, 2016). It was revealed that the development of architectures, technology and cultivation of net and plastic greenhouses with some fruit crops (such as navel orange and Keitt mango) happened, which generated a positive impact on the farmers' income compared to open field cultivation (Mohamed and Medany, 2015).…”

Section: Introductionmentioning

confidence: 99%

Economical Evaluation of Mango (Cv. Keitt) Trees Under Coloured Shade Nets

Mohamed,

Abdrabbo,

Medany

et al. 2023

Review.food.agr.

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This study explored the economical viability of five different coloured shade nets (White, yellow, red, blue and black) on mango production (Mangifera indica L. cv. Keitt). This study investigated the climatic parameters in terms of light intensity, minimum and maximum air temperature, relative humidity and plant growth across 2019 and 2020 seasons. When compared to open field conditions, coloured shade nets resulted in higher maximum temperatures and relative humidity. The black net cover and open field treatments gave the lowest mango yield compared to all greenhouse net cover. When compared to the other treatments, the use of white or yellow nets resulted in a considerable increase in the number of fruits and total yield per plant. According to prevailed conditions, it could be concluded that optimum microclimate for growing mango in similar conditions could be obtained under white and yellow nets compared to the other net covers. Black greenhouse net cover gave the lowest productivity during the experimental duration. Production costs, total revenue, net return and ratio of total revenue to cost for Keitt mango in Egypt are presented in this study. The result shows that the net return for white net reached 15777 Egyptian pound (LE) and LE 15270 per m2 in 2019 and 2020 respectively, which was 2.63 times those grown in the open field (LE 5980 and LE 5081 per 2000 m2) in 2019 and 2020 respectively. However, Revenue to cost ratio was found higher in white net in both seasons which were 1.9 and 1.8 respectively.

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Effects of shading nets on sunburn and quality of ‘Granny Smith’ apple fruits

Cited by 7 publications

References 12 publications

Photoselective Protective Netting Improves “Honeycrisp” Fruit Quality

Photoselective Protective Netting Improves “Honeycrisp” Fruit Quality

Bioactive compounds and fruit quality traits of Granny Smith Challenger apple grown under varying shade levels of green protective shade nets

Economical Evaluation of Mango (Cv. Keitt) Trees Under Coloured Shade Nets

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