Abstract
Abstract The use of chemicals to control vegetative growth of fruit trees at the Tree Fruit Research Laboratory in Wenatchee, Wash, began 25 years ago. Vegetative growth of apple seedlings in greenhouse trials was first controlled with foliar applications of butanedioic acid mono (2,2-dimethylhydrazide) (daminozide) (B-9, Alar). Field trials then were conducted on both apple and young cherry trees (3, 4). Daminozide also has been used to improve annual return blooming and fruit set, promote red skin color development, delay maturity, and improve storability of apple cultivars. Often, the high rates needed to control vegetative growth have reduced fruit size and fruit length, resulting in flat fruit shape (4, 13, 28). The latter phenomenon is important, for ‘Delicious’ apple for which “typiness” is a strong marketing characteristic and therefore an economic benefit. This paper presents results of continuing research on the control of excessive vegetative growth of deciduous fruit trees.
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Claims 3
Claim · model-written summary
Foliar daminozide controlled vegetative growth of apple seedlings in greenhouse trials.
- Taxon
- apple
Malus domesticae0 - Treatment
- foliar applications of butanedioic acid mono (2,2-dimethylhydrazide) (daminozide) (B-9, Alar)e0
- Outcome
- Vegetative growthe0
- Direction
- controllede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Vegetative growth of apple seedlings in greenhouse trials was first controlled with foliar applications of butanedioic acid mono (2,2-dimethylhydrazide) (daminozide) (B-9, Alar).”
Claim · model-written summary
High daminozide rates reduced fruit size and fruit length.
- Taxon
- Deciduous Fruit Treest0
- Treatment
- high ratese0
- Outcome
- fruit size and fruit lengthe0
- Direction
- reducede0
Not reportedComparator
Verbatim
e0“Often, the high rates needed to control vegetative growth have reduced fruit size and fruit length, resulting in flat fruit shape (4, 13, 28).”
t0“Deciduous Fruit Trees”
Claim · model-written summary
High growth-control rates resulted in flat fruit shape.
Not reportedComparatorDirection
Verbatim
e0“the high rates needed to control vegetative growth have reduced fruit size and fruit length, resulting in flat fruit shape”
t0“Deciduous Fruit Trees”
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