Abstract
In the two seasons of 2013/2014 and 2014/2015, 10 years old Washington navel orange trees (Citrus sinenses), on sour orange rootstock (Citrus aurantium L.), received ascorbic acid (AA) spry at 0 (control), 50, 100, 150, 200 ppm on three physiological stages: 1- at the beginning of flowering; 2- at full bloom; 3- at fruitlet diameter of 0.5-1.0 cm. All experimental trees received with about 7 liters of the spray solution at each spray time. The main goal of this study was to pilot AA effects on orange trees and to determine the most effective concentration. The data reveal that, increasing AA concentration enhanced mixed flower bud and bud opening percentages as well as total number of inflorescences, number of leafy inflorescences as well as total number of solitary flowers per twig in both seasons. The uppermost AA concentration (200 ppm) significantly increased number of fruits per tree since it reached 195.83 and 223.25 fruits / tree in the 1st and 2nd seasons, respectively compared with 56.17 and 61.78 fruits / tree, respectively with the control. The yield per tree recorded 41.11 and 48.23 kg in the 1st and 2nd seasons, respectively with AA 200 ppm against only 14.73 and 16.01 kg, respectively for the control. In addition, the higher AA concentrations significantly increased IAA concentration in mature leaves, flowers and fruitlets.
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Claims 7
Claim · model-written summary
Higher AA concentrations enhanced mixed flower bud and bud opening percentages.
- Taxon
- Washington Navel Orange Treest0
- Treatment
- AAe0
- Outcome
- mixed flower bud and bud opening percentagese0
- Direction
- enhancede0
Not reportedComparator
Verbatim
t0“Washington Navel Orange Trees”
e0“increasing AA concentration enhanced mixed flower bud and bud opening percentages”
Claim · model-written summary
Higher AA concentrations enhanced total and leafy inflorescence numbers and solitary flowers per twig.
- Taxon
- Washington Navel Orange Treest0
- Treatment
- AAe0
- Outcome
- total number of inflorescences, number of leafy inflorescences as well as total number of solitary flowers per twige0
- Direction
- enhancede0
Not reportedComparator
Verbatim
t0“Washington Navel Orange Trees”
e0“increasing AA concentration enhanced mixed flower bud and bud opening percentages as well as total number of inflorescences, number of leafy inflorescences as well as total number of solitary flowers per twig in both seasons”
Claim · model-written summary
AA at 200 ppm increased fruits per tree in the first season to 195.83 versus 56.17 for control.
Verbatim
t0“Washington Navel Orange Trees”
e0“The uppermost AA concentration (200 ppm) significantly increased number of fruits per tree since it reached 195.83 and 223.25 fruits / tree in the 1st and 2nd seasons, respectively compared with 56.17 and 61.78 fruits / tree, respectively with the control”
Claim · model-written summary
AA at 200 ppm increased fruits per tree in the second season to 223.25 versus 61.78 for control.
Verbatim
t0“Washington Navel Orange Trees”
e0“The uppermost AA concentration (200 ppm) significantly increased number of fruits per tree since it reached 195.83 and 223.25 fruits / tree in the 1st and 2nd seasons, respectively compared with 56.17 and 61.78 fruits / tree, respectively with the control”
Claim · model-written summary
AA at 200 ppm yielded 41.11 kg per tree versus 14.73 kg for control in the first season.
- Taxon
- Washington Navel Orange Treest0
- Treatment
- AA 200 ppme0
- Outcome
- yield per treee0
- Value
- 41.11e0
- Qualifier
- 1ste0
- Comparator
- the controle0
Not reportedDirection
Verbatim
t0“Washington Navel Orange Trees”
e0“The yield per tree recorded 41.11 and 48.23 kg in the 1st and 2nd seasons, respectively with AA 200 ppm against only 14.73 and 16.01 kg, respectively for the control”
Claim · model-written summary
AA at 200 ppm yielded 48.23 kg per tree versus 16.01 kg for control in the second season.
- Taxon
- Washington Navel Orange Treest0
- Treatment
- AA 200 ppme0
- Outcome
- yield per treee0
- Value
- 48.23 kge0
- Qualifier
- 2nd seasonse0
- Comparator
- the controle0
Not reportedDirection
Verbatim
t0“Washington Navel Orange Trees”
e0“The yield per tree recorded 41.11 and 48.23 kg in the 1st and 2nd seasons, respectively with AA 200 ppm against only 14.73 and 16.01 kg, respectively for the control”
Claim · model-written summary
Higher AA concentrations increased IAA concentration in mature leaves, flowers and fruitlets.
- Taxon
- Washington Navel Orange Treest0
- Organ / stage
- mature leaves, flowers and fruitletse0
- Treatment
- higher AA concentrationse0
- Outcome
- IAA concentratione0
- Direction
- increasede0
Not reportedComparator
Verbatim
t0“Washington Navel Orange Trees”
e0“the higher AA concentrations significantly increased IAA concentration in mature leaves, flowers and fruitlets”
The same questions in other papers
ascorbic acid · yield · Citrus sinensis (sweet orange)Results agree
2 papers in the same direction as this paper
- positive
- positive
Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.