Abstract
Bicoloured apple are quite commonly affected by a lack of red coloration, especially in the bottom part of the trees. Different treatments, such as manual leaf removal, summer pruning, or reflective white woven mulch cloth, for example, Extenday™, have proven their potential to improve the skin colour of apples. The objective of the present work was to examine the effect of pneumatic leave removal on skin colour improvement of the bicoloured apple 'Nicoter'/'Kanzi ®' and 'Cripps Pink'/Pink Lady ®. For this purpose, different trials with a pneumatic leave blower built by Olmi (Italy) were conducted in two commercial orchards at the Research Center Laimburg near Bozen (Italy) in autumn 2018. On 'Nicoter'/'Kanzi ® ', defoliation by hand and pneumatic defoliation were compared, whereas, on 'Cripps Pink'/Pink Lady ®, three different air pressures (0.3, 0.7, and 1.0 bar) were compared. The first results were very promising, depending on cv. and year. Trees treated with the pneumatic leave blower reached a yield of 90.1% of first quality fruit, whereas the untreated control only reached 53.3%. This brought, in some cases, a net financial gain of 10,997€ ha-1. No differences in ripening and starch breakdown were observed in the trials; however, some minor effects on fruit size were detected.
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Claims 4
Claim · model-written summary
Pneumatic leaf blowing yielded 90.1% first quality fruit, versus 53.3% in untreated trees.
- Taxon
- apple
Malus domesticat0 - Treatment
- pneumatic leave blowere0
- Outcome
- first quality fruite0
- Value
- 90.1%e0
- Qualifier
- 53.3%e0
- Comparator
- untreated controle0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Trees treated with the pneumatic leave blower reached a yield of 90.1% of first quality fruit, whereas the untreated control only reached 53.3%.”
t0“apple trees”
Claim · model-written summary
Pneumatic leaf blowing brought a net financial gain of 10,997€ ha-1 in some cases.
- Taxon
- appleMalus domesticat0
- Outcome
- net financial gaine0
- Direction
- gaine0
- Value
- 10,997€ ha-1e0
- Qualifier
- in some casese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“This brought, in some cases, a net financial gain of 10,997€ ha-1.”
t0“apple trees”
Claim · model-written summary
The trials found no differences in ripening or starch breakdown.
- Taxon
- appleMalus domesticat0
- Treatment
- pneumatic defoliationt0
- Outcome
- ripening and starch breakdowne0
- Direction
- No differencese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No differences in ripening and starch breakdown were observed in the trials;”
t0“Pneumatic defoliation of apple trees”
Claim · model-written summary
The trials detected minor effects on fruit size.
- Taxon
- appleMalus domesticat0
- Treatment
- pneumatic defoliationt0
- Outcome
- fruit sizee0
- Qualifier
- minor effectse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“some minor effects on fruit size were detected.”
t0“Pneumatic defoliation of apple trees”
The same questions in other papers
pruning · quality: sugar starch · Malus domestica (apple)Results differ
25 papers in the same direction as this paper · 21 in the opposite direction
- no effect
- no effect
- negative
43 papers more in this group
See all 47 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.