Abstract
Plant growth retardant (PGR) foliar sprays (in mg·L −1 ) of daminozide at concentrations from 1,000 to 16,000; paclobutrazol from 5 to 80; and uniconazole from 2 to 32 were applied to `Pacino' potted sunflowers ( Helianthus annuus L.) to compare their effectiveness at chemical height control. Plants were grown in 650-mL or 1.2-L pots. When the first inflorescence started to shed pollen, number of days from seeding until anthesis, total plant height measured from the pot rim to the top of the inflorescence, inflorescence diameter, and plant diameter were recorded. There was no significant difference in plant height between `Pacino' plants grown in 650-mL or 1.2-L pots. Total plant height, plant diameter, inflorescence diameter, and days until flowering were significant for the PGR treatment main effect. Marketable-sized plants grown in the 1.2-L pots were produced with uniconazole concentrations from 16 to 32 mg·L −1 or with daminozide concentrations from 4,000 to 8,000 mg·L −1 . Paclobutrazol foliar sprays up to 80 mg·L −1 had little effect, and higher foliar spray concentrations or substrate drench treatments may be needed to effectively control height.
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Claims 6
Claim · model-written summary
Uniconazole foliar sprays from 16 to 32 mg·L −1 produced marketable-sized sunflower plants in 1.2-L pots.
- Taxon
- Sunflower
Helianthus annuust0 - Treatment
- uniconazole concentrations from 16 to 32 mg·L −1e1
- Outcome
- Marketable-sized plantse1
- Setting
- 1.2-L potse1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potted Sunflower Growth”
e1“Marketable-sized plants grown in the 1.2-L pots were produced with uniconazole concentrations from 16 to 32 mg·L −1 or with daminozide concentrations from 4,000 to 8,000 mg·L −1”
Claim · model-written summary
Daminozide foliar sprays from 4,000 to 8,000 mg·L −1 produced marketable-sized sunflower plants in 1.2-L pots.
- Taxon
- SunflowerHelianthus annuust0
- Treatment
- daminozide concentrations from 4,000 to 8,000 mg·L −1e1
- Outcome
- Marketable-sized plantse1
- Setting
- 1.2-L potse1
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potted Sunflower Growth”
e1“Marketable-sized plants grown in the 1.2-L pots were produced with uniconazole concentrations from 16 to 32 mg·L −1 or with daminozide concentrations from 4,000 to 8,000 mg·L −1”
Claim · model-written summary
Paclobutrazol foliar sprays up to 80 mg·L −1 had little effect on sunflower.
- Taxon
- SunflowerHelianthus annuust0
- Treatment
- Paclobutrazol foliar sprays up to 80 mg·L −1e2
- Outcome
- effecte2
- Direction
- little effecte2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potted Sunflower Growth”
e2“Paclobutrazol foliar sprays up to 80 mg·L −1 had little effect”
Claim · model-written summary
The PGR treatment had a significant main effect on total plant height, plant diameter and inflorescence diameter of sunflower.
- Taxon
- SunflowerHelianthus annuust0
- Treatment
- PGR treatmente3
- Outcome
- Total plant height, plant diameter, inflorescence diametere3
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potted Sunflower Growth”
e3“Total plant height, plant diameter, inflorescence diameter, and days until flowering were significant for the PGR treatment main effect”
Claim · model-written summary
The PGR treatment had a significant main effect on days until flowering of sunflower.
- Taxon
- SunflowerHelianthus annuust0
- Treatment
- PGR treatmente3
- Outcome
- days until floweringe3
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potted Sunflower Growth”
e3“Total plant height, plant diameter, inflorescence diameter, and days until flowering were significant for the PGR treatment main effect”
Claim · model-written summary
Pot size of 650-mL or 1.2-L had no significant difference on plant height of potted sunflower.
- Taxon
- SunflowerHelianthus annuust0
- Treatment
- 650-mL or 1.2-L potse4
- Outcome
- plant heighte4
- Direction
- no significant differencee4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Potted Sunflower Growth”
e4“There was no significant difference in plant height between `Pacino' plants grown in 650-mL or 1.2-L pots”