Abstract
ABSTRACT- The purpose of this study was to elucidate the effects of chemical thinning on seasonal variations of leaf and fruit mineral compositions of ‘Soltani’ apple trees. Treatments, including unthinned control, naphthalene acetic acid (NAA) at 5 and 10 mg L-1, naphthaeneacetamide (NAD) at 25 and 50 mg L-1, benzyladenine (BA) at 50 and 100 mg L-1 and carbaryl at 500 and 1000 mg L-1 were applied when fruit diameters were about 8 to10 mm. The results showed that leaf nitrogen (N), phosphorus (P) and potassium (K) concentrations decreased, whereas calcium (Ca) and magnesium (Mg) increased during the season. Fruit mineral concentration changed with the age of the fruits. All nutrients decreased with fruit maturation. Most chemical thinners affected leaf concentrations of N and K but not P, Ca and Mg. Chemical thinning increased the fruits’ P, K and Mg concentrations. It is concluded that fruit chemical thinning may affect the accumulation of some nutrients, especially P and K in apple fruits and could improve fruit quality as well.
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Claims 8
Claim · model-written summary
Leaf N, P and K concentrations decreased over the season.
- Taxon
- Apple Trees
Malus domesticat0 - Organ / stage
- leafe0
- Outcome
- leaf nitrogen (N), phosphorus (P) and potassium (K) concentrationse0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaf nitrogen (N), phosphorus (P) and potassium (K) concentrations decreased”
t0“Apple Trees”
Claim · model-written summary
Leaf Ca and Mg increased over the season.
- Taxon
- Apple TreesMalus domesticat0
- Organ / stage
- leafe1
- Outcome
- calcium (Ca) and magnesium (Mg)e0
- Direction
- increasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“calcium (Ca) and magnesium (Mg) increased during the season”
t0“Apple Trees”
e1“leaf nitrogen (N), phosphorus (P) and potassium (K) concentrations decreased”
Claim · model-written summary
Fruit mineral concentrations changed with fruit age.
- Taxon
- Apple TreesMalus domesticat0
- Organ / stage
- fruitse0
- Outcome
- Fruit mineral concentratione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Fruit mineral concentration changed with the age of the fruits”
t0“Apple Trees”
Claim · model-written summary
All fruit nutrients decreased with maturation.
- Taxon
- Apple TreesMalus domesticat0
- Organ / stage
- fruit maturatione0
- Outcome
- All nutrientse0
- Direction
- decreasede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“All nutrients decreased with fruit maturation”
t0“Apple Trees”
Claim · model-written summary
Most chemical thinners affected leaf N and K concentrations.
- Taxon
- Apple TreesMalus domesticat0
- Treatment
- Most chemical thinnerse0
- Outcome
- leaf concentrations of N and Ke0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Most chemical thinners affected leaf concentrations of N and K but not P, Ca and Mg”
t0“Apple Trees”
Claim · model-written summary
Most chemical thinners did not affect leaf P, Ca or Mg concentrations.
- Taxon
- Apple TreesMalus domesticat0
- Treatment
- Most chemical thinnerse0
- Outcome
- P, Ca and Mge0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Most chemical thinners affected leaf concentrations of N and K but not P, Ca and Mg”
t0“Apple Trees”
Claim · model-written summary
Chemical thinning increased fruit P, K and Mg concentrations.
- Taxon
- Apple TreesMalus domesticat0
- Treatment
- Chemical thinninge0
- Outcome
- fruits’ P, K and Mg concentrationse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chemical thinning increased the fruits’ P, K and Mg concentrations”
t0“Apple Trees”
Claim · model-written summary
The authors conclude that thinning may improve fruit quality.
- Taxon
- appleMalus domesticae0
- Treatment
- fruit chemical thinninge0
- Outcome
- improve fruit quality as welle0
- Qualifier
- maye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fruit chemical thinning may affect the accumulation of some nutrients, especially P and K in apple fruits and could improve fruit quality as well”
The same questions in other papers
pruning · nutrient: content · Malus domestica (apple)Positive and negative results
6 papers in the same direction as this paper · 6 in the opposite direction
- negative
- negative
- no effect
9 papers more in this group
See all 13 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.