Banana frost protection by thermal nets

Zait, Yotam; Elingold, I.; Londener, A.; Gal, Erez; Or, G.; Galpaz, Navot

doi:10.17660/actahortic.2020.1272.3

Cited by 4 publications

(5 citation statements)

References 5 publications

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“…For example, a 50% aluminized shading screen was found to be the most effective method for reducing frost damage in peppers (Teitel et al, 1996). In another study, frost damage in banana plants unin the control plants, which were covered with a crystal 10% net (Zait et al, 2020). Still, as there was no apparent need for developing methods to protect against chill events in avocado orchards, none of the above measures was evaluated crop.…”

Section: What Is Already Known On This Subject?mentioning

confidence: 99%

Covering young ‘Reed’ avocado trees with shading nets during winter alleviates cold stress and promotes vegetative growth

Chernoivanov¹,

Neuberger²,

Levy³

et al. 2022

Europ.J.Hortic.Sci.

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Section: What Is Already Known On This Subject?mentioning

confidence: 99%

Covering young ‘Reed’ avocado trees with shading nets during winter alleviates cold stress and promotes vegetative growth

Chernoivanov¹,

Neuberger²,

Levy³

et al. 2022

Europ.J.Hortic.Sci.

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“…More broadly, previous studies have shown that high-density shading nets can protect banana plants from frost damage (Zait et al 2020). Interestingly, high-density shading nets also improve photosynthetic performance of mature 'Pinkerton' trees during extreme heat events (Alon et al 2022).…”

Section: Discussionmentioning

confidence: 95%

“…Additional studies showed that the Fv/Fm rate is a reliable quantitative indicator of cold stress damage (Rizza et al 2001). Shading nets can protect agricultural crops from harsh environments and cold damage (Chernoivanov et al 2022;Zait et al 2020). We hypothesized that covering avocado trees during the winter with high-density shading nets would reduce adverse effects of cold.…”

mentioning

confidence: 99%

Effects of Covering Mature Avocado ‘Pinkerton’ Trees with High-density Shading Nets during Cold Winters on Microclimate, Chlorophyll Fluorescence, Flowering, and Yield

Rubinovich,

Sofer-Arad,

Chernoivanov

et al. 2023

horts

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Avocado (Persea americana Mill.) is a subtropical fruit tree with high commercial value and increasing global demand. Most avocado cultivars are vulnerable to cold climates, which may reduce yields and restrict their geographical expansion. This includes the green-skinned avocado cultivar Pinkerton, which accounts for 45% of the avocado cultivated in northeastern Israel. Shading nets can protect agricultural crops from cold environments. Therefore, we evaluated the effect of covering mature ‘Pinkerton’ trees with high-density shading nets during the winter. Trees were covered with silver-colored 50% or 70% shading nets during three consecutive winters, and uncovered trees served as controls. Photosynthetically active radiation in plots covered with the silver 50% or 70% nets was significantly lower than that for the control by 52% and 90%, respectively. The minimum air temperature was similar between treatments. The maximum air temperature was generally lower under the shading nets compared with that of the control. The ratios of variable fluorescence to maximum fluorescence (Fv/Fm) measured in February 2019 and February 2020 were 0.72 and 0.8 for the control trees, 0.79 and 0.83 for the silver 50% trees, and 0.81 and 0.84 for the silver 70% trees, respectively. Flowering intensity of the net-covered trees was lower than that of the control by up to 42%. Interestingly, the 3-year average yield of trees covered with the silver 50% or 70% nets was insignificantly higher by 27% and 38%, respectively, compared with the control trees. These results suggest that the reduction of daytime solar irradiance in the winter by the shading nets may mitigate adverse effects of cold and increase yield. Additional long-term studies should examine the effects of shading nets and other shading strategies on different avocado cultivars.

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“…On a broader scope, previous studies have shown that high-density shading nets can protect banana plants from frost damage (Zait et al 2020). Interestingly, high-density shading nets also improve photosynthetic performance in mature 'Pinkerton' trees during extreme heat events (Alon et al 2022).…”

Section: Discussionmentioning

confidence: 98%

“…Additional studies showed that Fv/Fm rate is a reliable quantitative indicator of cold stress damage (Rizza et al 2001). Shading nets can protect agricultural crops from harsh environments, including cold damage (Chernoivanov et al 2022;Zait et al 2020). We hypothesized that covering avocado trees during the winter with high-density shading nets would positively affect the trees and reduce cold damage.…”

Section: Introductionmentioning

confidence: 99%

Effects of Covering Mature Avocado ‘Pinkerton’ Trees with High-Density Shading Nets during Cold Winters on Microclimate, Chlorophyll Fluorescence, Flowering and Yield

Rubinovich

Sofer-Arad

Chernoivanov

et al. 2023

Preprint

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Avocado (Persea americana Mill.) is a subtropical fruit tree of high commercial value with increasing global demand. Most avocado cultivars are vulnerable to cold climates, which may reduce yields and restrict their geographical expansion. This includes the green-skinned avocado cv. Pinkerton, which accounts for 45% of the avocado cultivated in northeastern Israel. Shading nets can protect agricultural crops from cold environments. We therefore evaluated the effect of covering mature 'Pinkerton' trees with high-density shading nets during the winter. Trees were covered with Silver-coloured 50% or 70% shading nets during three consecutive winters, while uncovered trees served as controls. Photosynthetically active radiation in plots covered with the Silver 50% or 70% nets was significantly lower than for the control by 52% and 90%, respectively. Minimum air temperature was similar between treatments. Maximum air temperature was generally lower under the shading nets compared to the control. The ratio of variable to maximum fluorescence (Fv/Fm) measured in February 2019 and 2020 was 0.72 and 0.8 in the control trees, 0.79 and 0.83 in the Silver 50% trees and 0.81 and 0.84 in the Silver 70% trees, respectively. Flowering intensity was lower in the net-covered trees compared to the control, by up to 42%. Interestingly, the three-year average yield of trees covered with the Silver 50% or 70% nets was insignificantly higher by 27% and 38%, respectively, compared to the control trees. These results suggest that the reduction of daytime solar irradiance in the winter by the shading nets may mitigate cold stress and increase yield. Additional long-term studies should examine the effects of shading nets and other shading strategies on different avocado cultivars.

show abstract

Banana frost protection by thermal nets

Cited by 4 publications

References 5 publications

Covering young ‘Reed’ avocado trees with shading nets during winter alleviates cold stress and promotes vegetative growth

Covering young ‘Reed’ avocado trees with shading nets during winter alleviates cold stress and promotes vegetative growth

Effects of Covering Mature Avocado ‘Pinkerton’ Trees with High-density Shading Nets during Cold Winters on Microclimate, Chlorophyll Fluorescence, Flowering, and Yield

Effects of Covering Mature Avocado ‘Pinkerton’ Trees with High-Density Shading Nets during Cold Winters on Microclimate, Chlorophyll Fluorescence, Flowering and Yield

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