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Effect of photoselective color shade nets on blueberries

Effect of photoselective color shade nets on blueberries

Delay in Harvesting with the Application of Colored Photoselective Nets.

Photoselective Color Shade Nets in Blueberries: Effects on Berry Size and Weight.

Studies demonstrate the effect of colored photoselective color shade nets on blueberries, particularly in delaying the harvest. In blueberries grown under sunlight and white netting, 100% of the berries were ripe after 8 weeks, whereas under blue and red nets, the same percentage was reached one week later. Under black netting, ripening was delayed by approximately 20 days, with only 50% of the berries reaching maturity. In the following season, ripening was rapid and uniform, as all the blueberries matured simultaneously under blue, red, white nets, and sunlight. Under the black net, only 50% of the blueberries were ripe when the other plants reached full maturity.

Cultivation of shade netting
Colors such as red help blueberry crops increase fruit size.

Net Colors and Their Different Contributions to Cultivation

The use of colored photoselective nets influenced the final size of the blueberries at maturity. Red, blue, and white nets significantly increased the size and weight of individual berries compared to those grown in the open field. Under the black net, the blueberries reached sizes comparable to the other light treatments, except that the berry weight was lower during the first season of the experiment. Conversely, the presence of the nets did not notably affect the soluble solids content of the berries.

Effect of Colored Photoselective Color Shade Nets on Blueberries: Fruit Production and Quality

A series of trials evaluated the growth also fruit quality of blueberries (Vaccinium corymbosum L.) variety Brigitta using four different shade net treatments plus a control without shading.

  • Red net at 40% and 18% shade
  • Aluminized net at 40%
  • Black net at 35%

Under the red shade net, the fruits showed the highest firmness, diameter, and weight, and were harvested three weeks later than the control. Additionally, the highest yield and number of fruits per plant were recorded.

Photoselective Color Shade Nets
With the different types of shade netting, crops improve in size and firmness,

Selective Filtering of Solar Radiation with Colored Photoselective Color Shade Nets

In addition to protecting plants and fruits, colored shade nets have the capacity to absorb radiation from the spectrum corresponding to the complementary color. Consequently, the light is reflected, absorbed, and transmitted selectively. The red net transmits light from the red and far-red spectrum. The red net diffuses more light than the black net, making it more effective in preventing overheating and allowing for higher yields. The reduction in temperature influences growth (prolonged and leading to larger size) also fruit ripening. Phytochrome, which is higher in proportion to the amount of far-red light, is likely responsible for the larger size. It also enhances the photosynthetic process.

Colored Photoselective Shade Net System for Controlling Blueberry Ripening

shade netting
The characteristics of shade nets are ideal for your crops to develop and grow with a higher quality.

Shade Net Evaluations

The physical characteristics evaluated were fruit weight and shape, showing weight variability as an effect of the shade net. The chemical characteristics evaluated included maturity indices (pH, soluble solids, titratable acidity, soluble solids ratio), secondary metabolites (anthocyanins and total phenols), and antioxidant capacity. The maturity index affected by the shade net was soluble solids, with a decrease of 1.03° Brix in the fruits harvested under shade netting. The total anthocyanin content varied between treatments, especially in the fruit pulp, without affecting the content in the skin and the total fruit. Meanwhile, total phenols showed differences in the skin and the total fruit, with lower synthesis of secondary metabolites in fruits harvested under shade netting.

The number of floral buds in blueberries depends on the photoperiod, temperature, and cultural practices that affect the timing of growth cessation. Decreased light intensity reduces the number of floral buds and the rate of fruit ripening.

Shade Netting Delays or Advances Blueberry Harvest

In many berry crops, the initiation and differentiation of floral buds are clearly affected by photoperiod and temperature, which often have interactive effects. Shade tunnels are commonly use in off-season production systems to help modify the climate also protect against adverse environmental effects. With the expanding production of blueberries worldwide, rapid advances are being made in manipulating blueberry cultivars to control market timing.

Colored Luminescent Shade Nets Increase Blueberry Yield and Profitability

Blueberries (Vaccinium corymbosum L.) naturally develop in deciduous forests. Market demands require producing these fruits under greater environmental pressures (temperature, radiation, and relative humidity). In this context, colored shade nets can improve conditions also affect vegetative growth, yield, and fruit quality. Shading with colored photoselective nets produced significant changes in reproductive behavior also altered some vegetative parameters of blueberry crops. Certain treatments (white 50%, gray 35%, and red 50%) consistently increased yields. This positive effect on yield was due to higher fruit set, as the treatments did not alter floral induction and fruit weight. The effects of colored shading nets on fruit quality and post-harvest life have been studied.

Black net 35% and 50%: Long-term negative effects

White net 50%: Increase between 90.5% and 44.6%

Gray net 35%: Increase between 59.6% and 24.9%

Red net 50%: Increase between 84.2% and 31.9%

Photoselective Color Shade Nets
Let there be no doubt that shade nets will provide good protection also help crops achieve quality growth.

Shade Net Yield

The highest yields were due to a greater number of fruits, as the nets did not affect fruit size or soluble solids. In the first season, black nets increased stem length and internode length, and leaf size, while the number of shoots and the length/width ratio of the leaf did not change.

Increased Yield in Blueberries

  • Gray net at 35%
  • Red net at 50%
  • White net at 50%
  • First year: Yield increase between 60% and 91%
  • Second year: Yield increase between 26% and 45%
  • Gray net at 50%
  • White net at 35%
  • No yield increase

The yield increase was due to a greater number of fruits, not an increase in size.

Bibliography

Modification of Sunlight Radiation through Colored Photo-Selective Nets Affects Anthocyanin Profile in Vaccinium spp. Berries

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4545418/

Daniza Minerva Morales Ulloa Escuela de Agronomía, Facultad de Recursos Naturales, Universidad Católica de Temuco (UCTemuco). Rudecindo Ortega 02950, Temuco, Chile. Recibido 19 diciembre 2014. Aceptado 01 febrero 2015.

Fill out the form below to let us know your questions or comments:

Delay in Harvesting with the Application of Colored Photoselective Nets.

Photoselective Color Shade Nets in Blueberries: Effects on Berry Size and Weight.

Studies demonstrate the effect of colored photoselective color shade nets on blueberries, particularly in delaying the harvest. In blueberries grown under sunlight and white netting, 100% of the berries were ripe after 8 weeks, whereas under blue and red nets, the same percentage was reached one week later. Under black netting, ripening was delayed by approximately 20 days, with only 50% of the berries reaching maturity. In the following season, ripening was rapid and uniform, as all the blueberries matured simultaneously under blue, red, white nets, and sunlight. Under the black net, only 50% of the blueberries were ripe when the other plants reached full maturity.

Cultivation of shade netting
Colors such as red help blueberry crops increase fruit size.

Net Colors and Their Different Contributions to Cultivation

The use of colored photoselective nets influenced the final size of the blueberries at maturity. Red, blue, and white nets significantly increased the size and weight of individual berries compared to those grown in the open field. Under the black net, the blueberries reached sizes comparable to the other light treatments, except that the berry weight was lower during the first season of the experiment. Conversely, the presence of the nets did not notably affect the soluble solids content of the berries.

Effect of Colored Photoselective Color Shade Nets on Blueberries: Fruit Production and Quality

A series of trials evaluated the growth also fruit quality of blueberries (Vaccinium corymbosum L.) variety Brigitta using four different shade net treatments plus a control without shading.

  • Red net at 40% and 18% shade
  • Aluminized net at 40%
  • Black net at 35%

Under the red shade net, the fruits showed the highest firmness, diameter, and weight, and were harvested three weeks later than the control. Additionally, the highest yield and number of fruits per plant were recorded.

Photoselective Color Shade Nets
With the different types of shade netting, crops improve in size and firmness,

Selective Filtering of Solar Radiation with Colored Photoselective Color Shade Nets

In addition to protecting plants and fruits, colored shade nets have the capacity to absorb radiation from the spectrum corresponding to the complementary color. Consequently, the light is reflected, absorbed, and transmitted selectively. The red net transmits light from the red and far-red spectrum. The red net diffuses more light than the black net, making it more effective in preventing overheating and allowing for higher yields. The reduction in temperature influences growth (prolonged and leading to larger size) also fruit ripening. Phytochrome, which is higher in proportion to the amount of far-red light, is likely responsible for the larger size. It also enhances the photosynthetic process.

Colored Photoselective Shade Net System for Controlling Blueberry Ripening

shade netting
The characteristics of shade nets are ideal for your crops to develop and grow with a higher quality.

Shade Net Evaluations

The physical characteristics evaluated were fruit weight and shape, showing weight variability as an effect of the shade net. The chemical characteristics evaluated included maturity indices (pH, soluble solids, titratable acidity, soluble solids ratio), secondary metabolites (anthocyanins and total phenols), and antioxidant capacity. The maturity index affected by the shade net was soluble solids, with a decrease of 1.03° Brix in the fruits harvested under shade netting. The total anthocyanin content varied between treatments, especially in the fruit pulp, without affecting the content in the skin and the total fruit. Meanwhile, total phenols showed differences in the skin and the total fruit, with lower synthesis of secondary metabolites in fruits harvested under shade netting.

The number of floral buds in blueberries depends on the photoperiod, temperature, and cultural practices that affect the timing of growth cessation. Decreased light intensity reduces the number of floral buds and the rate of fruit ripening.

Shade Netting Delays or Advances Blueberry Harvest

In many berry crops, the initiation and differentiation of floral buds are clearly affected by photoperiod and temperature, which often have interactive effects. Shade tunnels are commonly use in off-season production systems to help modify the climate also protect against adverse environmental effects. With the expanding production of blueberries worldwide, rapid advances are being made in manipulating blueberry cultivars to control market timing.

Colored Luminescent Shade Nets Increase Blueberry Yield and Profitability

Blueberries (Vaccinium corymbosum L.) naturally develop in deciduous forests. Market demands require producing these fruits under greater environmental pressures (temperature, radiation, and relative humidity). In this context, colored shade nets can improve conditions also affect vegetative growth, yield, and fruit quality. Shading with colored photoselective nets produced significant changes in reproductive behavior also altered some vegetative parameters of blueberry crops. Certain treatments (white 50%, gray 35%, and red 50%) consistently increased yields. This positive effect on yield was due to higher fruit set, as the treatments did not alter floral induction and fruit weight. The effects of colored shading nets on fruit quality and post-harvest life have been studied.

Black net 35% and 50%: Long-term negative effects

White net 50%: Increase between 90.5% and 44.6%

Gray net 35%: Increase between 59.6% and 24.9%

Red net 50%: Increase between 84.2% and 31.9%

Photoselective Color Shade Nets
Let there be no doubt that shade nets will provide good protection also help crops achieve quality growth.

Shade Net Yield

The highest yields were due to a greater number of fruits, as the nets did not affect fruit size or soluble solids. In the first season, black nets increased stem length and internode length, and leaf size, while the number of shoots and the length/width ratio of the leaf did not change.

Increased Yield in Blueberries

  • Gray net at 35%
  • Red net at 50%
  • White net at 50%
  • First year: Yield increase between 60% and 91%
  • Second year: Yield increase between 26% and 45%
  • Gray net at 50%
  • White net at 35%
  • No yield increase

The yield increase was due to a greater number of fruits, not an increase in size.

Bibliography

Modification of Sunlight Radiation through Colored Photo-Selective Nets Affects Anthocyanin Profile in Vaccinium spp. Berries

https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4545418/

Daniza Minerva Morales Ulloa Escuela de Agronomía, Facultad de Recursos Naturales, Universidad Católica de Temuco (UCTemuco). Rudecindo Ortega 02950, Temuco, Chile. Recibido 19 diciembre 2014. Aceptado 01 febrero 2015.

Fill out the form below to let us know your questions or comments:

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