Abstract
Four-year-old apple (Malus x domestica Borkh.) trees cv. 'Braeburn' on M.26 rootstock were thinned at full bloom to establish six crop loads ranging from a heavy crop to a deflowered treatment. At harvest, mean yield per tree varied from 0 to 38 kg and mean fruit weight ranged from 225 g in the heaviest cropping treatment to 385 g in the lightest cropping treatment. Light cropping resulted in a significant advance in fruit maturity as indicated by background color, starch/iodine score and soluble solids. There were small differences in leaf photosynthetic rate among the treatments when shoot growth was active. However, in early January, coincident with cessation of shoot growth and maximum rate of accumulation of fruit weight, leaf assimilation rate was reduced by as much as 65% on the deflowered trees compared to the trees carrying the heaviest crop. Leaf assimilation rate showed a curvilinear response to crop load at this time, with little increase in leaf assimilation when crop load exceeded 12 fruit m(-2) leaf area.
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Claims 6
Claim · model-written summary
Apple yield per tree varied from 0 to 38 kg across crop loads.
- Taxon
- apple
Malus domesticae1 - Treatment
- six crop loadse2
- Outcome
- mean yield per treee0
- Direction
- variede0
- Value
- 0 to 38 kge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“At harvest, mean yield per tree varied from 0 to 38 kg”
e1“apple (Malus x domestica Borkh.) trees”
e2“six crop loads ranging from a heavy crop to a deflowered treatment”
Claim · model-written summary
Mean fruit weight rose from 225 g in the heaviest cropping treatment to 385 g in the lightest.
- Taxon
- appleMalus domesticae1
- Treatment
- lightest cropping treatmente0
- Outcome
- mean fruit weighte0
- Direction
- rangede0
- Value
- 385 ge0
- Qualifier
- 225 ge0
- Comparator
- heaviest cropping treatmente0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“mean fruit weight ranged from 225 g in the heaviest cropping treatment to 385 g in the lightest cropping treatment”
e1“apple (Malus x domestica Borkh.) trees”
Claim · model-written summary
Light cropping significantly advanced fruit maturity.
- Taxon
- appleMalus domesticae1
- Treatment
- Light croppinge0
- Outcome
- fruit maturitye0
- Direction
- advancee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Light cropping resulted in a significant advance in fruit maturity as indicated by background color, starch/iodine score and soluble solids”
e1“apple (Malus x domestica Borkh.) trees”
Claim · model-written summary
Leaf photosynthetic rates differed little among crop loads while shoots grew actively.
- Taxon
- appleMalus domesticae1
- Treatment
- the treatmentse0
- Outcome
- leaf photosynthetic ratee0
- Direction
- small differencese0
- Qualifier
- when shoot growth was activee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were small differences in leaf photosynthetic rate among the treatments when shoot growth was active”
e1“apple (Malus x domestica Borkh.) trees”
Claim · model-written summary
In early January, deflowered trees had leaf assimilation up to 65% lower than heavily cropped trees.
- Taxon
- appleMalus domesticae1
- Treatment
- deflowered treese0
- Outcome
- leaf assimilation ratee0
- Direction
- reducede0
- Value
- 65%e0
- Qualifier
- in early Januarye0
- Comparator
- trees carrying the heaviest crope0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“in early January, coincident with cessation of shoot growth and maximum rate of accumulation of fruit weight, leaf assimilation rate was reduced by as much as 65% on the deflowered trees compared to the trees carrying the heaviest crop”
e1“apple (Malus x domestica Borkh.) trees”
Claim · model-written summary
Leaf assimilation responded curvilinearly to crop load, with little increase beyond 12 fruit per square metre of leaf area.
- Taxon
- appleMalus domesticae1
- Treatment
- crop loade0
- Outcome
- Leaf assimilation ratee0
- Direction
- little increasee0
- Value
- 12 fruit m(-2) leaf areae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf assimilation rate showed a curvilinear response to crop load at this time, with little increase in leaf assimilation when crop load exceeded 12 fruit m(-2) leaf area”
e1“apple (Malus x domestica Borkh.) trees”
The same questions in other papers
light · yield · Malus domestica (apple)Positive and negative results
5 papers in the same direction as this paper · 5 in the opposite direction
- no effect
- negative
- no effect
7 papers more in this group
See all 11 papers →light · phenology · Malus domestica (apple)Results agree
1 paper in the same direction as this paper
- 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.