Abstract
Valsa canker, caused by the fungus Valsa mali, is one of the most destructive diseases of apple in the primary production areas of China and other East Asian countries. Currently, there are no effective control methods for this disease. We investigated the occurrence of Valsa canker in 24 apple orchards in Shaanxi Province in concert with foliar nutrient analysis, and found that there was a significant negative correlation of leaf potassium (K) content with incidence and severity of Valsa canker. Fertilization experiments showed that increasing tree K content enhanced resistance to pathogen colonization and establishment. Apple trees with leaf K content greater than 1.30% exhibited almost complete resistance to Valsa mali. Field trials demonstrated that increasing K fertilization could significantly reduce disease incidence. Improved management of tree nutrition, especially K content, could effectively control the occurrence and development of Valsa canker.
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Claims 6
Claim · model-written summary
Leaf potassium content correlated negatively with canker incidence.
- Taxon
- Apple
Malus domesticat0 - Interactor
- Valsa cankere0pathogen
- Compound
- potassium (K)e0
- Outcome
- incidencee0
- Direction
- negative correlatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significant negative correlation of leaf potassium (K) content with incidence and severity of Valsa canker”
t0“Apple”
Claim · model-written summary
Leaf potassium content correlated negatively with canker severity.
- Taxon
- AppleMalus domesticat0
- Compound
- potassium (K)e0
- Outcome
- severity of Valsa cankere0
- Direction
- negative correlatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significant negative correlation of leaf potassium (K) content with incidence and severity of Valsa canker”
t0“Apple”
Claim · model-written summary
Increasing tree potassium enhanced resistance to pathogen colonization and establishment.
- Taxon
- AppleMalus domesticat0
- Treatment
- increasing tree K contente0
- Outcome
- resistance to pathogen colonization and establishmente0
- Direction
- enhancede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increasing tree K content enhanced resistance to pathogen colonization and establishment”
t0“Apple”
Claim · model-written summary
Leaf potassium above 1.30% was associated with almost complete resistance to Valsa mali.
- Taxon
- AppleMalus domesticae0
- Interactor
- Valsa maliCytospora malie0pathogen
- Outcome
- almost complete resistance to Valsa malie0
- Value
- greater than 1.30%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Apple trees with leaf K content greater than 1.30% exhibited almost complete resistance to Valsa mali”
Claim · model-written summary
Increasing potassium fertilization significantly reduced disease incidence.
- Taxon
- AppleMalus domesticat0
- Treatment
- increasing K fertilizatione0
- Outcome
- disease incidencee0
- Direction
- reducee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increasing K fertilization could significantly reduce disease incidence”
t0“Apple”
Claim · model-written summary
Authors conclude potassium nutrition management could control Valsa canker.
- Taxon
- AppleMalus domesticat0
- Outcome
- Improved management of tree nutrition, especially K contente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Improved management of tree nutrition, especially K content, could effectively control the occurrence and development of Valsa canker”
t0“Apple”
The same questions in other papers
fertilization · disease · Malus domestica (apple)Positive and negative results
21 papers in the same direction as this paper · 2 in the opposite direction
- negative
- negative
- positive
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See all 24 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.