Articles
Differentially colored photoselective nets: a sophisticated technological concept to improve fruit quality parameters in soilless grown blueberries
Article number
1449_33
Pages
249 – 256
Language
English
Abstract
This research aimed to investigate the influence of differentially colored photoselective antihail nets on the fruit quality traits in the highbush blueberry (Vaccinium corymbosum L.) cultivar ‘Duke’. Тhe field study was conducted in 2022 in the soilless blueberry crop plantation located in the village of Grua (central Serbia). The pots were filled with a substrate mixture of sawdust from conifers and white peat (50:50 ratio) and placed 0.8 m apart in a row and 3.0 m between rows (4.170 plants
ha-1). During the growing season of 2022, the following colors of photoselective anti-hail nets were tested: blue, red, yellow, pearl, and black (produced by Agrinova, Italy). Fruit quality parameters obtained under colored photoselective nets were compared with black net, as a control treatment.
The use of red photoselective net significantly elevated the total content of anthocyanins and phenols in the fruit, as well as the total content of carotenoids (5.51 mg c-3-g eq 100 g-1 FW, 1.49 mg GA eq g-1 FW, 66.3 g g-1 FW, respectively) compared to the black net (3.50 mg c-3-g eq 100 g-1 FW, 1.26 mg GA eq g-1 FW, 29.3 g g-1 FW, respectively). In general, the black anti-hail net turned out to be worse in terms of total phenolic content.
The pearl net significantly increased the content of the chlorophyll a and b (151 and 179 g g-1 FW, respectively), followed by the black net (132 and 144 g g-1 FW, respectively). Total antioxidant capacity was significantly highest in fruit grown under the yellow net (1.29 mg AsA eq g-1 FW). These results provide new insight into the potential use of different colored photoselective anti-hail nets to influence the fruit quality of soilless-grown blueberries.
Since the yellow net decreased the content of chlorophyll a and b and carotenoids, its application appears less attractive for commercial soilless blueberry plantations.
The use of pearl and red anti-hail nets for blueberries is advantageous in terms of the physiological quality of the fruit.
ha-1). During the growing season of 2022, the following colors of photoselective anti-hail nets were tested: blue, red, yellow, pearl, and black (produced by Agrinova, Italy). Fruit quality parameters obtained under colored photoselective nets were compared with black net, as a control treatment.
The use of red photoselective net significantly elevated the total content of anthocyanins and phenols in the fruit, as well as the total content of carotenoids (5.51 mg c-3-g eq 100 g-1 FW, 1.49 mg GA eq g-1 FW, 66.3 g g-1 FW, respectively) compared to the black net (3.50 mg c-3-g eq 100 g-1 FW, 1.26 mg GA eq g-1 FW, 29.3 g g-1 FW, respectively). In general, the black anti-hail net turned out to be worse in terms of total phenolic content.
The pearl net significantly increased the content of the chlorophyll a and b (151 and 179 g g-1 FW, respectively), followed by the black net (132 and 144 g g-1 FW, respectively). Total antioxidant capacity was significantly highest in fruit grown under the yellow net (1.29 mg AsA eq g-1 FW). These results provide new insight into the potential use of different colored photoselective anti-hail nets to influence the fruit quality of soilless-grown blueberries.
Since the yellow net decreased the content of chlorophyll a and b and carotenoids, its application appears less attractive for commercial soilless blueberry plantations.
The use of pearl and red anti-hail nets for blueberries is advantageous in terms of the physiological quality of the fruit.
Publication
Authors
J. Dragiić Maksimović, N. Ramović, D. Radivojević, J. Milivojević
Keywords
photosynthetic photon flux density, total anthocyanins, phenolic content, total carotenoids content, chlorophyll, antioxidant capacity
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