Abstract
In organic apple growing, yield control is commonly achieved by removing buds and flowers with mechanical thinning machines and/or lime sulphur sprays. To allow for thinning also later in the season, trials with shading nets have been carried out over several years. By shading trees with close-meshed nets before June fruit drop, photosynthesis in the leaves can be drastically reduced. Regardless the good trial results, the method is not used in the field, because shading trees with nets is labour-intensive and expensive. We therefore tested different substances as alternatives to shading nets. First promising results were obtained with different oily substances. However, based on our current knowledge, negative side effects such as leaf burn and fruit russeting, can not be excluded.
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Claims 5
Claim · model-written summary
Shading apple trees before June fruit drop drastically reduced leaf photosynthesis.
- Taxon
- apple trees
Malus domesticat0 - Organ / stage
- leavese0
- Treatment
- shading trees with close-meshed netse0
- Outcome
- photosynthesis in the leavese0
- Direction
- reducede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“By shading trees with close-meshed nets before June fruit drop, photosynthesis in the leaves can be drastically reduced.”
t0“apple trees”
Claim · model-written summary
Trials with shading nets gave good results for apple thinning.
- Taxon
- apple treesMalus domesticat0
- Treatment
- shading trees with netse0
- Outcome
- good trial resultse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Regardless the good trial results, the method is not used in the field, because shading trees with nets is labour-intensive and expensive.”
t0“apple trees”
Claim · model-written summary
Shading nets are not used in the field because they are labour intensive and expensive.
- Taxon
- apple treesMalus domesticat0
- Outcome
- not used in the fielde0
- Qualifier
- labour-intensive and expensivee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the method is not used in the field, because shading trees with nets is labour-intensive and expensive.”
t0“apple trees”
Claim · model-written summary
Different oily substances gave promising early results as alternatives to shading nets.
- Taxon
- apple treesMalus domesticat0
- Treatment
- different oily substancese0
- Outcome
- promising resultse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“First promising results were obtained with different oily substances.”
t0“apple trees”
Claim · model-written summary
Leaf burn and fruit russeting remain possible negative side effects.
- Taxon
- apple treesMalus domesticat0
- Outcome
- leaf burn and fruit russetinge0
- Qualifier
- can not be excludede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“negative side effects such as leaf burn and fruit russeting, can not be excluded.”
t0“apple trees”
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