Abstract
Manganese toxicity is a major obstacle to agriculture in acid soils. Dark pericarp disease (DPD) is a newly spread physiological disorder induced by excess Mn in litchi, leading to undesirable fruit appearance and substantial economic loss. In this work, broadcast of alkaline soil conditioner in winter, followed by foliar sprays of ascorbic acid and sulfur solution at fruit development, was adopted to examine the effect of these combinations on DPD alleviation in a litchi orchard, with DPD morbidities of 70~85% in recent ten years. The combination of soil conditioner broadcast and foliar water spray was used as the control. At harvest, DPD incidence was significantly decreased by sulfur spray (3.3 ± 1.0%) and slightly reduced by ascorbic acid spray (10.7 ± 8.0%) compared to the control (12.9 ± 7.6%). Soil pH and available Mn were significantly increased and reduced by the soil conditioner broadcast. Sulfur spray significantly inhibited Mn uptake but enhanced the accumulation of Mg, Ca, sugars and cyanidin-3-rutinoside in the pericarp, leading to improved fruit pigmentation. Antioxidase activities were regulated to resist Mn stress by sulfur spray. The spray of ascorbic acid could not mitigate DPD as expected, probably due to the dose used. Conclusively, this study provides a practicable approach to mitigate Mn phytoavailability in acid soils.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 10
Claim · model-written summary
Sulfur spray reduced litchi dark pericarp disease incidence to 3.3 ± 1.0% versus 12.9 ± 7.6% control.
- Treatment
- sulfur spraye0
- Outcome
- DPD incidencee0
- Direction
- decreasede0
- Value
- 3.3 ± 1.0%e0
- Qualifier
- 12.9 ± 7.6%e0
- Comparator
- controle0
LitchiOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“DPD incidence was significantly decreased by sulfur spray (3.3 ± 1.0%) and slightly reduced by ascorbic acid spray (10.7 ± 8.0%) compared to the control (12.9 ± 7.6%)”
t0“Litchi”
Claim · model-written summary
Ascorbic acid spray slightly reduced litchi DPD incidence to 10.7 ± 8.0%.
- Treatment
- ascorbic acid spraye0
- Outcome
- DPD incidencee0
- Direction
- reducede0
- Value
- 10.7 ± 8.0%e0
- Qualifier
- 12.9 ± 7.6%e0
- Comparator
- controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“DPD incidence was significantly decreased by sulfur spray (3.3 ± 1.0%) and slightly reduced by ascorbic acid spray (10.7 ± 8.0%) compared to the control (12.9 ± 7.6%)”
t0“Litchi”
Claim · model-written summary
Soil conditioner increased soil pH.
Not reportedTaxonComparator
Verbatim
e0“Soil pH and available Mn were significantly increased and reduced by the soil conditioner broadcast”
t0“Litchi”
Claim · model-written summary
Soil conditioner reduced available soil Mn.
Not reportedTaxonComparator
Verbatim
e0“Soil pH and available Mn were significantly increased and reduced by the soil conditioner broadcast”
t0“Litchi”
Claim · model-written summary
Sulfur spray inhibited manganese uptake in litchi.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sulfur spray significantly inhibited Mn uptake but enhanced the accumulation of Mg, Ca, sugars and cyanidin-3-rutinoside in the pericarp”
t0“Litchi”
Claim · model-written summary
Sulfur spray enhanced litchi pericarp Mg, Ca and sugar accumulation.
- Organ / stage
- pericarpe0
- Treatment
- Sulfur spraye0
- Outcome
- accumulation of Mg, Ca, sugarse0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sulfur spray significantly inhibited Mn uptake but enhanced the accumulation of Mg, Ca, sugars and cyanidin-3-rutinoside in the pericarp”
t0“Litchi”
Claim · model-written summary
Sulfur spray enhanced litchi pericarp cyanidin-3-rutinoside.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sulfur spray significantly inhibited Mn uptake but enhanced the accumulation of Mg, Ca, sugars and cyanidin-3-rutinoside in the pericarp”
t0“Litchi”
Claim · model-written summary
Sulfur spray improved litchi fruit pigmentation.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leading to improved fruit pigmentation”
e1“Sulfur spray significantly inhibited Mn uptake but enhanced the accumulation of Mg, Ca, sugars and cyanidin-3-rutinoside in the pericarp”
t0“Litchi”
Claim · model-written summary
Sulfur spray regulated litchi antioxidase activities under manganese stress.
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Antioxidase activities were regulated to resist Mn stress by sulfur spray”
t0“Litchi”
Claim · model-written summary
Authors concluded the combined approach is practicable for reducing manganese availability in acid soils.
- Outcome
- mitigate Mn phytoavailability in acid soilse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“this study provides a practicable approach to mitigate Mn phytoavailability in acid soils”
t0“Litchi”
The same questions in other papers
sulfur atom · disease · LitchiPositive and negative results
1 in the opposite direction
- no effect
ascorbic acid · disease · LitchiResults agree
2 papers in the same direction as this paper
- positive
- positive
application · disease · LitchiResults agree
2 papers in the same direction as this paper
- positive
- positive
application · nutrient: content · LitchiResults agree
2 papers in the same direction as this paper
- positive
- positive
application · molecular: metabolites · LitchiResults agree
5 papers in the same direction as this paper
- positive
- positive
- positive
2 papers more in this group
See all 6 papers →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.