Effect of shade cloth on the evolution of nutrient concentrations in apple tree leaves

Hirzel, Juan; Moya-Elizondo, Ernesto A.; Hernandez, M. Torres; Guzman, P.S.; González, Dagoberto

doi:10.1016/j.scienta.2020.109288

Cited by 5 publications

(3 citation statements)

References 24 publications

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“…This might be due to the lowering of temperature and providing suitable PAR by the use of shade net in a hot and dry weather, which led to an increase in PAL activity, and consequently to the increase in phenolics content in the arils, as was also observed for anthocyanins enhancement (a cluster of phenolics) by higher PAL activity 55 . The higher content of phenolics in plants under shade nets may be related to the ability of these nets to transmit infrared and red light (an important factor for phenolics accumulation in plants) within the canopy 58 . Total phenolics in fruits from avocado trees under 20% red shade net was much higher than in fruits from trees under 20% white and 20% blue shade nets 9 .…”

Section: Discussionmentioning

confidence: 99%

Fruit quality, antioxidant, and mineral attributes of pomegranate cv. Ghojagh, influenced by shading and spray applications of potassium sulfate and sodium silicate

Moradi,

Zamani,

Fatahi

et al. 2024

Sci Rep

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Pomegranate (Punica granatum L.) fruit quality depends on many traits including visual, biochemical and mineral characteristics. One of the negative traits is aril whitening (AW) which is a frequently observed disorder in hot and dry climates, that leads to decline in desirable fruit quality. Color, antioxidant, and mineral contents of the arils are of prime importance as quality traits. Therefore, this study aims to investigate the effect of shading and foliar minerals on fruit quality during the fruit development stages of pomegranate. Treatments included shaded (50% green net) and unshaded trees and foliar application of trees with potassium sulfate (K, 1% and 2%) or sodium silicate (Si, 0.05, 0.1 and 0.15%) during two growing seasons. Results showed that the severity of AW at harvest decreased significantly when trees were covered with shading compared to control. The color values of L* and ⁰hue for arils were lower in fruits grown under shading conditions indicating darker red arils. Shading significantly reduced chilling injury in cold storage compared to open field fruits. Shading and Si 0.15% increased superoxide dismutase, and catalase enzymes activity while decreased Polyphenol oxidase and peroxidase. Covering trees with shading and Si 0.15% spray resulted in the highest total anthocyanin, antioxidant activity, and total phenolics content in the arils. Shading as well as Si 0.15% increased macronutrients content of the arils. The study concluded that covering pomegranate trees and spraying with Si in hot climate reduced AW, increased antioxidant traits, and led to higher fruit quality.

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Section: Discussionmentioning

confidence: 99%

Fruit quality, antioxidant, and mineral attributes of pomegranate cv. Ghojagh, influenced by shading and spray applications of potassium sulfate and sodium silicate

Moradi,

Zamani,

Fatahi

et al. 2024

Sci Rep

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show abstract

“…These variations in concentrations could be associated with metabolic and structural functions [37]. Since N, P, Ca and Mg are the mobile elements, they can translocate to fruit immediately, resulting in an increase in fruit size [38]. Additionally, N, P, K, Ca, and Mg mineral concentrations increased by 20% on average in shaded plants; the increased mineral nutrients were closely associated with decreased carbohydrate accumulation [15].…”

Section: Discussionmentioning

confidence: 99%

Effects of Shade Net Colors on Mineral Elements and Postharvest Shelf Life and Quality of Fresh Fig (Ficus carica L.) under Rain-Fed Condition

et al. 2021

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Photoselective netting is well known for filtering the intercepted solar radiation, thus affecting light quality. While its effects on leaf mineral elements have been well investigated, how color netting affects fruit mineral nutrients remains elusive. This study was conducted to evaluate the effects of shade provided by blue and yellow nets on mineral nutrients of fig trees under rain-fed conditions. The experiment was arranged as a split-plot treatment in a randomized complete block design with three replications. Cultivars “Sabz” and “Siah” were covered with color nets or left uncovered (as the control group). The highest nitrogen content (8710 ppm) was recorded for cultivar “Sabz” covered with blue net. Color nets enhanced calcium concentration in cultivar “Siah”. Covering fig trees with yellow net increased magnesium content in cultivar “Siah” and phosphorus content in cultivar “Sabz”. Our observation showed the significant positive effect of photo selective nets on postharvest quality, by decreasing fig fruit weight loss and extending shelf life of fruits. In general, color nets as a new agro-technological approach can maintain fruit nutrition under rain-fed conditions and increase postharvest shelf life and quality of fresh fig.

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“…For the correct nutritional management of blueberries grown in soilless medium, guidelines must be developed (Guo et al, 2021;Schreiber and Nunez, 2021), considering the differences in varietal behavior, both in nutritional needs and nutrient concentrations of plant tissue (Kritzinger, 2014;Strik and Vance, 2015;Muñoz et al, 2016;Fang et al, 2017;Kingston et al, 2020). A widely used tool to evaluate the nutritional status of plants is leaf analysis; however, for blueberry cultivation as well as other fruit trees, changes in the concentration of nutrients in leaves are season dependent (Kritzinger, 2014;Strik and Vance 2015;Hirzel et al, 2020;Kingston et al, 2020). The appropriate sampling moment must be defined, which in the case of blueberry corresponds to the period between 16 to 20 wk post-emergence (Hanson and Hancock, 1986;Strik and Vance, 2015).…”

Section: Introductionmentioning

confidence: 99%

Use of increasing rates of ammonia nitrogen in pot-grown blueberries and its effect on fruit yield and macronutrient concentration in leaves

Hirzel,

Muñoz,

Moya-Elizondo

et al. 2024

Chil. j. agric. res.

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Due to the smaller size of berries plants and some vegetables, their production in containers has grown worldwide. To understand the effect of increasing doses of ammoniacal N, we evaluated production, firmness and size of fruits and concentration of macronutrients in leaves of four blueberry (Vaccinium corymbosum L.) cultivars (Duke, Legacy, Cargo, and Suziblue) in south central Chile. All were grown in pots with substrate during their third growing season. The results showed an interaction of ammoniacal N dose with blueberry cultivar in most of the parameters evaluated, except for firmness and size of fruits. The increasing dose of ammoniacal N allowed higher production per plant in only two of the four cultivars without effects on the quality attributes firmness and size of fruits. Differences in production per plant and fruit firmness were obtained between cultivars, with production values per plant between 86-210, 142-219, 195-203, and 504-979 g in ʻDukeʼ, ʻLegacyʼ, ʻCargoʼ, and ʻSuziblueʼ, respectively, and greater fruit firmness in ʻSuziblueʼ. The concentrations of macronutrients in leaves showed interactions between cultivar and doses of ammoniacal N, which did not allow obtaining a single dose of ammoniacal N that generate nutritional concentration values in leaves associated with greater fruit production in the four blueberry cultivars.

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Effect of shade cloth on the evolution of nutrient concentrations in apple tree leaves

Cited by 5 publications

References 24 publications

Fruit quality, antioxidant, and mineral attributes of pomegranate cv. Ghojagh, influenced by shading and spray applications of potassium sulfate and sodium silicate

Fruit quality, antioxidant, and mineral attributes of pomegranate cv. Ghojagh, influenced by shading and spray applications of potassium sulfate and sodium silicate

Effects of Shade Net Colors on Mineral Elements and Postharvest Shelf Life and Quality of Fresh Fig (Ficus carica L.) under Rain-Fed Condition

Use of increasing rates of ammonia nitrogen in pot-grown blueberries and its effect on fruit yield and macronutrient concentration in leaves

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