Abstract
The eastern foothills of Helan Mountain are a production area of high-quality wine grapes, but the low content of water-soluble calcium in the alkaline soil in this area has become an important limiting factor for the production of high-end wines. In this study, 7-year-old Cabernet Sauvignon grapes grown at Lilan Winery, which is located at the eastern foot of Helan Mountain in Ningxia, China, were used to examine the effect of exogenous calcium supplementation on fruit growth and berry quality. Calcium sugar alcohol was applied as a foliar spray at 1.2 L/hm2 (T1), 2.4 L/hm2 (T2), 3.6 L/hm2 (T3), 4.8 L/hm2 (T4), and 6.0 L/hm2 (T5) concentrations at the fruit expansion stage, the early stage of grape veraison, the middle stage of grape veraison, and the later stage of grape veraison. Water control was used for comparison. The results showed that foliar calcium supplementation can significantly enhance the photosynthetic characteristics of wine grape leaves, increase the chlorophyll content of leaves, and improve the quality of grape berries. Under the T3 (3.6 L/hm2) concentration of exogenous calcium, the transverse diameter, the longitudinal diameter, and fruit shape index of grapes were the highest, which were increased by 1.71%, 5.33%, and 3.92% compared to the control, respectively. The application of high calcium concentrations (T4 and T5) inhibited the physiological development of grapes. The spike length, hundred-grain weight, yield of wine grapes, sugar-acid ratio, tannin, and total phenols were the highest in the T2 (2.4 L/hm2) treatment. The results of principal component analysis based on multiple indicators showed that foliar application of 2.4-3.6 L/hm2 chelated sugar alcohol calcium on the leaf surfaces of grape leaves was the most suitable for improving the physiological characteristics and berry quality of wine grapes. Keywords: wine grapes, chelated sugar alcohol calcium, mineral elements, berry quality, Helan Mountain DOI: 10.25165/j.ijabe.20221503.5405 Citation: Ma T H, Hui Y R, Zhang L, Su B F, Wang R. Foliar application of chelated sugar alcohol calcium fertilizer for regulating the growth and quality of wine grapes. Int J Agric & Biol Eng, 2022; 15(3): 153–158.
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Claims 11
Claim · model-written summary
Foliar calcium significantly enhanced wine grape leaf photosynthetic characteristics.
- Taxon
- grapest0
- Treatment
- foliar calcium supplementatione0
- Outcome
- photosynthetic characteristicse0
- Direction
- enhancee0
Not reportedComparator
Verbatim
e0“foliar calcium supplementation can significantly enhance the photosynthetic characteristics of wine grape leaves”
t0“grapes”
Claim · model-written summary
Foliar calcium increased wine grape leaf chlorophyll content.
- Taxon
- grapest0
- Treatment
- foliar calcium supplementatione0
- Outcome
- chlorophyll content of leavese0
- Direction
- increasee0
Not reportedComparator
Verbatim
e0“foliar calcium supplementation can significantly enhance the photosynthetic characteristics of wine grape leaves, increase the chlorophyll content of leaves”
t0“grapes”
Claim · model-written summary
Foliar calcium improved grape berry quality.
- Taxon
- grapest0
- Treatment
- foliar calcium supplementatione0
- Outcome
- quality of grape berriese0
- Direction
- improvee0
Not reportedComparator
Verbatim
e0“foliar calcium supplementation can significantly enhance the photosynthetic characteristics of wine grape leaves, increase the chlorophyll content of leaves, and improve the quality of grape berries”
t0“grapes”
Claim · model-written summary
At T3, transverse diameter was highest and 1.71% above control.
Verbatim
e0“Under the T3 (3.6 L/hm2) concentration of exogenous calcium, the transverse diameter, the longitudinal diameter, and fruit shape index of grapes were the highest, which were increased by 1.71%, 5.33%, and 3.92% compared to the control, respectively.”
t0“grapes”
Claim · model-written summary
At T3, longitudinal diameter was highest and 5.33% above control.
Verbatim
e0“Under the T3 (3.6 L/hm2) concentration of exogenous calcium, the transverse diameter, the longitudinal diameter, and fruit shape index of grapes were the highest, which were increased by 1.71%, 5.33%, and 3.92% compared to the control, respectively.”
t0“grapes”
Claim · model-written summary
At T3, fruit shape index was highest and 3.92% above control.
Verbatim
e0“Under the T3 (3.6 L/hm2) concentration of exogenous calcium, the transverse diameter, the longitudinal diameter, and fruit shape index of grapes were the highest, which were increased by 1.71%, 5.33%, and 3.92% compared to the control, respectively.”
t0“grapes”
Claim · model-written summary
The T4 calcium treatment inhibited physiological development.
Not reportedComparator
Verbatim
e0“The application of high calcium concentrations (T4 and T5) inhibited the physiological development of grapes.”
t0“grapes”
Claim · model-written summary
The T5 calcium treatment inhibited physiological development.
Not reportedComparator
Verbatim
e0“The application of high calcium concentrations (T4 and T5) inhibited the physiological development of grapes.”
t0“grapes”
Claim · model-written summary
T2 gave the highest spike length, hundred-grain weight and yield.
- Taxon
- grapest0
- Treatment
- T2 (2.4 L/hm2)e0
- Outcome
- spike length, hundred-grain weight, yield of wine grapese0
- Direction
- higheste0
Not reportedComparator
Verbatim
e0“The spike length, hundred-grain weight, yield of wine grapes, sugar-acid ratio, tannin, and total phenols were the highest in the T2 (2.4 L/hm2) treatment.”
t0“grapes”
Claim · model-written summary
T2 gave the highest sugar-acid ratio, tannin and total phenols.
- Taxon
- grapest0
- Treatment
- T2 (2.4 L/hm2)e0
- Outcome
- sugar-acid ratio, tannin, and total phenolse0
- Direction
- higheste0
Not reportedComparator
Verbatim
e0“The spike length, hundred-grain weight, yield of wine grapes, sugar-acid ratio, tannin, and total phenols were the highest in the T2 (2.4 L/hm2) treatment.”
t0“grapes”
Claim · model-written summary
The authors found foliar 2.4-3.6 L/hm2 chelated sugar alcohol calcium most suitable for grape physiology and berry quality.
- Taxon
- wine grapes
Vitis viniferae0 - Treatment
- foliar application of 2.4-3.6 L/hm2 chelated sugar alcohol calciume0
- Outcome
- most suitable for improving the physiological characteristics and berry quality of wine grapese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“foliar application of 2.4-3.6 L/hm2 chelated sugar alcohol calcium on the leaf surfaces of grape leaves was the most suitable for improving the physiological characteristics and berry quality of wine grapes.”
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