Abstract
Greenhouse and field experiments were conducted to determine the effects of the growth regulator N-(2-chloro-4-pyridyl)-N′-phenylurea (CPPU) on fruit set, berry size, and yield of southern highbush blueberry ( Vaccinium corymbosum hybrids). The experiments were conducted over a period of several years in Georgia and Florida. CPPU sprays were capable of increasing fruit set and berry weight of southern highbush blueberry, although the responses to CPPU treatment were variable and appeared to be influenced by factors such as rate, spray timing, and cultivar. In Florida, high natural fruit set may have prevented increased fruit set from CPPU. A slight delay in berry maturity was noted in several experiments. Spray burn occurred on several occasions and may be related to factors such as cultivar, rate, spray volume, and use of surfactant.
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Claims 5
Claim · model-written summary
CPPU sprays increased southern highbush blueberry fruit set, with variable responses.
- Taxon
- southern highbush blueberrye0
- Treatment
- CPPU sprayse0
- Outcome
- fruit sete0
- Direction
- increasinge0
- Qualifier
- responses to CPPU treatment were variablee0
Not reportedComparator
Verbatim
e0“CPPU sprays were capable of increasing fruit set and berry weight of southern highbush blueberry, although the responses to CPPU treatment were variable”
Claim · model-written summary
CPPU sprays increased southern highbush blueberry berry weight, with variable responses.
Not reportedComparator
Verbatim
e0“CPPU sprays were capable of increasing fruit set and berry weight of southern highbush blueberry, although the responses to CPPU treatment were variable”
Claim · model-written summary
High natural fruit set in Florida may have prevented an increase in fruit set from CPPU.
Verbatim
e0“In Florida, high natural fruit set may have prevented increased fruit set from CPPU.”
t0“Southern Highbush Blueberries”
Claim · model-written summary
CPPU application slightly delayed berry maturity in several experiments.
- Taxon
- Southern Highbush Blueberriest0
- Treatment
- CPPU Applicationst0
- Outcome
- berry maturitye0
- Direction
- delaye0
- Qualifier
- several experimentse0
Not reportedComparator
Verbatim
e0“A slight delay in berry maturity was noted in several experiments.”
t0“CPPU Applications on Southern Highbush Blueberries”
Claim · model-written summary
Spray burn occurred on several occasions after CPPU application.
Verbatim
e0“Spray burn occurred on several occasions and may be related to factors such as cultivar, rate, spray volume, and use of surfactant.”
t0“CPPU Applications on Southern Highbush Blueberries”
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See all 12 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.