Abstract
The demand for sweet pepper (Capsicum annuum L.) is increasing because of nutrition and quality factors. Research to improve pepper yield using plant growth regulators (PGRs) has occurred, but results are not consistent. This study evaluated the effects of the PGRs naphthalene acetic acid (NAA), gibberellic acid (GA3), 4-chlorophenoxyacetic acid, Kelpak® (seaweed extract), and their combinations, on stomatal conductance, leaf chlorophyll content, and growth and yield of hydroponically grown sweet pepper. Seedling root plugs were soaked in Kelpak® at 10 mL L−1, 3 h before transplanting. Thereafter, solutions were applied to foliage with NAA at 20 mg L−1, GA3 at 15 mL L−1, and Kelpak® at 5 mL L−1 and their combinations at 15, 30, and 45 days after transplanting. PGR treatments benefitted stomatal conductance. Leaf chlorophyll content of untreated plants decreased with time compared to treated plants. Foliar application of GA3, alone, and in combination with Kelpak®, increased plant height, fresh and dry biomass, and yield compared to other treatments. Further investigation with application rates, and time of foliar application, on sweet pepper will provide a better understanding of how plants respond to PGRs.
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Claims 6
Claim · model-written summary
Plant growth regulator treatments benefited stomatal conductance in sweet pepper.
- Taxon
- sweet pepper
Capsicum annuumt0 - Treatment
- PGR treatmentse0
- Outcome
- stomatal conductancee0
- Direction
- benefittede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PGR treatments benefitted stomatal conductance.”
t0“sweet pepper”
Claim · model-written summary
Leaf chlorophyll content in untreated sweet pepper decreased over time relative to treated plants.
- Taxon
- sweet pepperCapsicum annuumt0
- Treatment
- treated plantse0
- Outcome
- Leaf chlorophyll contente0
- Direction
- decreasede0
- Comparator
- untreated plantse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Leaf chlorophyll content of untreated plants decreased with time compared to treated plants.”
t0“sweet pepper”
Claim · model-written summary
Foliar GA3 alone increased sweet pepper plant height, fresh and dry biomass, and yield compared with other treatments.
- Taxon
- sweet pepperCapsicum annuumt0
- Treatment
- Foliar application of GA3, alonee0
- Outcome
- plant height, fresh and dry biomasse0
- Direction
- increasede0
- Comparator
- other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar application of GA3, alone, and in combination with Kelpak®, increased plant height, fresh and dry biomass, and yield compared to other treatments.”
t0“sweet pepper”
Claim · model-written summary
Foliar GA3 alone increased sweet pepper yield compared with other treatments.
- Taxon
- sweet pepperCapsicum annuumt0
- Treatment
- Foliar application of GA3, alonee0
- Outcome
- yielde0
- Direction
- increasede0
- Comparator
- other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar application of GA3, alone, and in combination with Kelpak®, increased plant height, fresh and dry biomass, and yield compared to other treatments.”
t0“sweet pepper”
Claim · model-written summary
Foliar GA3 combined with Kelpak increased sweet pepper plant height, fresh and dry biomass compared with other treatments.
- Taxon
- sweet pepperCapsicum annuumt0
- Treatment
- GA3, alone, and in combination with Kelpak®e0
- Outcome
- plant height, fresh and dry biomasse0
- Direction
- increasede0
- Comparator
- other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar application of GA3, alone, and in combination with Kelpak®, increased plant height, fresh and dry biomass, and yield compared to other treatments.”
t0“sweet pepper”
Claim · model-written summary
Foliar GA3 combined with Kelpak increased sweet pepper yield compared with other treatments.
- Taxon
- sweet pepperCapsicum annuumt0
- Treatment
- GA3, alone, and in combination with Kelpak®e0
- Outcome
- yielde0
- Direction
- increasede0
- Comparator
- other treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Foliar application of GA3, alone, and in combination with Kelpak®, increased plant height, fresh and dry biomass, and yield compared to other treatments.”
t0“sweet pepper”
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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.