Abstract
The aim of this 2022 study was to evaluate the effect of tree growth-limiting treatments on the tree yield and quality of ‘Mutsu’ apples. The experiment was established on 7-year-old trees on M.9 rootstock in a commercial orchard in Wilga near Warsaw. Growth-limiting treatments included unilateral root pruning, spraying the trees with Regalis Plus 10 WG at various times, and spraying with Flordimex 480 SL. Eight combinations were used, with four replicates of 20 trees per repetition. The measurements included fruit set, length of this year’s shoots, yield per tree, average fruit weight, and the size structure of the yield. The distinctive physiological status of the apples was assessed directly after harvest, directly after 8 months of storage under CA conditions (1.5% CO2, 1.5% O2, 1 °C, >92% RH) and after an additional 7 days of shelf-life. Spraying trees with Regalis Plus 10 WG from the balloon stage onwards, irrespective of the treatment with root pruning, was most effective in both inhibiting long-stem growth and increasing tree yield (by almost two times) by increasing the number of apples per tree. The growth response of long-stemmed apple trees to both unilateral root pruning and Ethephon spray was significantly lower than it was to Regalis Plus 10 WG spray and had relatively little effect on their yield. Regalis Plus 10 WG resulted in a clear reduction in average fruit weight (by about 100 g), which, in the case of the large-fruited cultivar ‘Mutsu’, should be seen as an advantage. Its application from the balloon stage onwards promoted higher apple firmness at harvest and after simulated handling preceded by long-term storage.
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Claims 6
Claim · model-written summary
Regalis Plus 10 WG applied from the balloon stage most effectively inhibited long-stem growth of apple trees.
- Taxon
- apples
Malus domesticae1 - Organ / stage
- balloon stagee1
- Treatment
- Regalis Plus 10 WGe1
- Outcome
- inhibiting long-stem growthe1
- Direction
- most effectivee1
- Qualifier
- irrespective of the treatment with root pruninge1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Spraying trees with Regalis Plus 10 WG from the balloon stage onwards, irrespective of the treatment with root pruning, was most effective in both inhibiting long-stem growth and increasing tree yield (by almost two times) by increasing the number of apples per tree”
Claim · model-written summary
Regalis Plus 10 WG applied from the balloon stage increased apple tree yield by almost two times, by increasing the number of apples per tree.
- Taxon
- applesMalus domesticae1
- Treatment
- Regalis Plus 10 WGe1
- Outcome
- tree yielde1
- Direction
- increasinge1
- Value
- almost two timese1
- Qualifier
- by increasing the number of apples per treee1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Spraying trees with Regalis Plus 10 WG from the balloon stage onwards, irrespective of the treatment with root pruning, was most effective in both inhibiting long-stem growth and increasing tree yield (by almost two times) by increasing the number of apples per tree”
Claim · model-written summary
The growth response of long-stemmed apple trees to unilateral root pruning and Ethephon spray was significantly lower than to Regalis Plus 10 WG spray.
- Taxon
- apple treesMalus domesticae3
- Treatment
- unilateral root pruning and Ethephon spraye3
- Outcome
- growth responsee3
- Direction
- significantly lowere3
- Comparator
- Regalis Plus 10 WG spraye3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“The growth response of long-stemmed apple trees to both unilateral root pruning and Ethephon spray was significantly lower than it was to Regalis Plus 10 WG spray and had relatively little effect on their yield”
Claim · model-written summary
Unilateral root pruning and Ethephon spray had relatively little effect on the yield of long-stemmed apple trees.
- Taxon
- apple treesMalus domesticae3
- Treatment
- unilateral root pruning and Ethephon spraye3
- Outcome
- yielde3
- Direction
- no_changeinferrede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“The growth response of long-stemmed apple trees to both unilateral root pruning and Ethephon spray was significantly lower than it was to Regalis Plus 10 WG spray and had relatively little effect on their yield”
Claim · model-written summary
Regalis Plus 10 WG reduced average fruit weight of ‘Mutsu’ apples by about 100 g, which is an advantage for the large-fruited cultivar.
- Taxon
- ‘Mutsu’ Applet0
- Material
- large-fruited cultivar ‘Mutsu’e5
- Treatment
- Regalis Plus 10 WGe5
- Outcome
- average fruit weighte5
- Direction
- reductione5
- Value
- about 100 ge5
Not reportedComparator
Verbatim
t0“‘Mutsu’ Apple Orchard”
e5“Regalis Plus 10 WG resulted in a clear reduction in average fruit weight (by about 100 g), which, in the case of the large-fruited cultivar ‘Mutsu’, should be seen as an advantage”
Claim · model-written summary
Application of Regalis Plus 10 WG from the balloon stage promoted higher apple firmness at harvest and after simulated handling.
- Taxon
- appleMalus domesticae6
- Treatment
- application from the balloon stage onwardse6
- Outcome
- apple firmness at harvest and after simulated handlinge6
- Direction
- highere6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Its application from the balloon stage onwards promoted higher apple firmness at harvest and after simulated handling preceded by long-term storage”
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