Abstract
The growth and yield response of strawberry (Fragaria X annassa Duch.) and cranberry (Vaccinium macrocarpon Ait) to various growth inhibitors, but especially to paclobutrazol (PP333), and fertilizers were investigated in glasshouse and field studies. PP333 decreased vegetative growth in a rate-dependent manner in both strawberry and cranberry. PP333 delayed fruit ripening in strawberry and decreased fruit set and fruit size in cranberry. PP333 decreased pollen germination of strawberry. Soil residues of PP333 were biologically active when measured 11 weeks after application in the strawberry study and when measured after 50 weeks in a cranberry study. In a field study with cranberry, PP333 caused a decrease in vegetative growth and an increase in flowering in the next season after treatment. Two-dimensional partitioning was used to account for yield variation from treatment effects on adjusted yield variates. The truss number was the most important contributor to yield variation in the strawberry, but was not affected by treatments. PP333 made a substantial contribution to yield variation in strawberry through its effect on fruit development and ripening. In the cranberry, fruit set was the major contributor to yield variation and PP333 influenced yield substantially through its effect on fruit set. In glasshouse studies, PP333 decreased shoot elongation in cranberry within 3 weeks of application, and increased the number of branches on primary shoots. Buds were formed within 7 weeks of treatment and some of the buds contained flowers. Shoot growth was greater with a high rate of NPK fertilizer than with the low fertilizer rate and was greater in peaty soil than in sandy soil. While bud set was not modified by soil type or fertilizer rate, high NPK fertilizer decreased floral induction. Some effects of PP333 treatment were decreased by gibberellic acid, but generally these effects here not reversed. In a field study with the cranberry, PP333 increased flower bud set for flowering and non-flowering uprights but slightly decreased floral induction for non-flowering uprights.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 20
Claim · model-written summary
PP333 reduced strawberry vegetative growth in a rate-dependent manner.
- Taxon
- strawberry (Fragaria X annassa Duch.)
_single2.jpg?width=60)
Fragaria ×ananassae1 - Treatment
- PP333e0
- Outcome
- vegetative growthe0
- Direction
- decreasede0
- Qualifier
- rate-dependent mannere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_single2.jpg?width=500)
Verbatim
e0“PP333 decreased vegetative growth in a rate-dependent manner in both strawberry and cranberry.”
e1“strawberry (Fragaria X annassa Duch.)”
Claim · model-written summary
PP333 reduced cranberry vegetative growth in a rate-dependent manner.
- Taxon
- cranberry (Vaccinium macrocarpon Ait)
Vaccinium macrocarpone1 - Treatment
- PP333e0
- Outcome
- vegetative growthe0
- Direction
- decreasede0
- Qualifier
- rate-dependent mannere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PP333 decreased vegetative growth in a rate-dependent manner in both strawberry and cranberry.”
e1“cranberry (Vaccinium macrocarpon Ait)”
Claim · model-written summary
PP333 delayed strawberry fruit ripening.
- Taxon
- strawberryFragaria ×ananassae0
- Treatment
- PP333e0
- Outcome
- fruit ripeninge0
- Direction
- delayede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PP333 delayed fruit ripening in strawberry”
Claim · model-written summary
PP333 reduced cranberry fruit set.
Not reportedComparator
Verbatim
e0“PP333 delayed fruit ripening in strawberry and decreased fruit set and fruit size in cranberry.”
Claim · model-written summary
PP333 reduced cranberry fruit size.
Not reportedComparator
Verbatim
e0“PP333 delayed fruit ripening in strawberry and decreased fruit set and fruit size in cranberry.”
Claim · model-written summary
PP333 reduced strawberry pollen germination.
- Taxon
- strawberryFragaria ×ananassae0
- Treatment
- PP333e0
- Outcome
- pollen germinatione0
- Direction
- decreasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PP333 decreased pollen germination of strawberry.”
Claim · model-written summary
PP333 soil residues remained biologically active 11 weeks after application in strawberry.
- Taxon
- strawberryFragaria ×ananassae0
- Outcome
- Soil residues of PP333 were biologically activee0
- Qualifier
- 11 weeks after applicatione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Soil residues of PP333 were biologically active when measured 11 weeks after application in the strawberry study”
Claim · model-written summary
PP333 soil residues remained biologically active 50 weeks after application in cranberry.
Verbatim
e0“when measured after 50 weeks in a cranberry study.”
e1“Soil residues of PP333 were biologically active when measured 11 weeks after application in the strawberry study and when measured after 50 weeks in a cranberry study.”
Claim · model-written summary
In field cranberry, PP333 increased flowering the season after treatment.
- Taxon
- cranberrye0
- Treatment
- PP333e0
- Outcome
- floweringe0
- Direction
- increasee0
- Qualifier
- next season after treatmente0
- Setting
- field studye0
Not reportedComparator
Verbatim
e0“In a field study with cranberry, PP333 caused a decrease in vegetative growth and an increase in flowering in the next season after treatment.”
Claim · model-written summary
Strawberry truss number was the most important contributor to yield variation, but treatments did not affect it.
- Taxon
- strawberryFragaria ×ananassae0
- Organ / stage
- trusse0
- Outcome
- yield variatione0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The truss number was the most important contributor to yield variation in the strawberry, but was not affected by treatments.”
Claim · model-written summary
PP333 substantially contributed to strawberry yield variation through fruit development and ripening.
- Taxon
- strawberryFragaria ×ananassae0
- Treatment
- PP333e0
- Outcome
- yield variatione0
- Qualifier
- fruit development and ripeninge0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PP333 made a substantial contribution to yield variation in strawberry through its effect on fruit development and ripening.”
Claim · model-written summary
Cranberry fruit set was the major contributor to yield variation.
Not reportedDirection
Verbatim
e0“In the cranberry, fruit set was the major contributor to yield variation”
Claim · model-written summary
PP333 substantially influenced cranberry yield through fruit set.
Verbatim
e0“PP333 influenced yield substantially through its effect on fruit set.”
e1“In the cranberry, fruit set was the major contributor to yield variation and PP333 influenced yield substantially through its effect on fruit set.”
Claim · model-written summary
PP333 reduced cranberry shoot elongation within three weeks in glasshouse studies.
- Taxon
- cranberrye0
- Treatment
- PP333e0
- Outcome
- shoot elongatione0
- Direction
- decreasede0
- Qualifier
- within 3 weeks of applicatione0
- Setting
- glasshouse studiese0
Not reportedComparator
Verbatim
e0“In glasshouse studies, PP333 decreased shoot elongation in cranberry within 3 weeks of application”
Claim · model-written summary
PP333 increased cranberry branches on primary shoots.
Not reportedComparator
Verbatim
e0“PP333 decreased shoot elongation in cranberry within 3 weeks of application, and increased the number of branches on primary shoots.”
Claim · model-written summary
Cranberry buds formed within seven weeks of PP333 treatment and some contained flowers.
Verbatim
e0“In glasshouse studies, PP333 decreased shoot elongation in cranberry within 3 weeks of application”
e1“Buds were formed within 7 weeks of treatment and some of the buds contained flowers.”
Claim · model-written summary
Cranberry shoot growth was greater with high than low NPK fertilizer and in peaty than sandy soil.
Verbatim
e0“Shoot growth was greater with a high rate of NPK fertilizer than with the low fertilizer rate and was greater in peaty soil than in sandy soil.”
e1“In the cranberry, fruit set was the major contributor to yield variation”
Claim · model-written summary
High NPK fertilizer reduced cranberry floral induction; bud set was unchanged by soil type or fertilizer rate.
Not reportedComparator
Verbatim
e0“While bud set was not modified by soil type or fertilizer rate, high NPK fertilizer decreased floral induction.”
e1“In the cranberry, fruit set was the major contributor to yield variation”
Claim · model-written summary
Gibberellic acid diminished some PP333 effects, but generally did not reverse them.
Not reportedComparator
Verbatim
e0“Some effects of PP333 treatment were decreased by gibberellic acid, but generally these effects here not reversed.”
e1“In the cranberry, fruit set was the major contributor to yield variation”
Claim · model-written summary
In field cranberry, PP333 increased flower bud set in flowering and non-flowering uprights but slightly reduced floral induction in non-flowering uprights.
Not reportedComparator
Verbatim
e0“In a field study with the cranberry, PP333 increased flower bud set for flowering and non-flowering uprights but slightly decreased floral induction for non-flowering uprights.”
The same questions in other papers
paclobutrazol · yield · Fragaria x ananassa (strawberry)Results differ
5 papers in the same direction as this paper · 10 in the opposite direction
- positive
- positive
- positive
12 papers more in this group
See all 16 papers →paclobutrazol · growth · Fragaria x ananassa (strawberry)Positive and negative results
7 papers in the same direction as this paper · 7 in the opposite direction
- positive
- positive
- positive
11 papers more in this group
See all 15 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.