Abstract
The gradual depletion of the Ogallala Aquifer under the Southern High Plains of Texas during the past fifty years has resulted in reduced well capacities for cotton irrigation. Water table declines have already led some to shift from irrigated to dryland farming, and many of the remaining wells cannot provide enough water for full irrigation. The present study evaluated the effectiveness of the synthetic cytokinin CPPU (N-(2-chloro-4-pyridinyl)-N’-phenylurea) on the stimulation of lateral root production and enhancement of cotton yields under dryland conditions. Seed treatments of 250 µmol/mol or seedling sprays of 5 µmol/mol at the cotyledon stage, increased lateral root production. Cotton yield increases associated with the increased rooting ranged from 8 to 20% in three years of field studies under dryland conditions. The greatest yield increases were associated with dry shallow soils. Evaluation of water-deficit stress levels in untreated and CPPU-treated cotton showed reduced water-deficit stress levels throughout the growing season in the CPPU-treated cotton. This study showed that application of CPPU to cotton, early in development, has the potential to reduce water stress and increase yields.
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Claims 5
Claim · model-written summary
Seed treatment with 250 µmol/mol CPPU increased lateral root production in cotton
- Taxon
- Cotton
Gossypium hirsutumt0 - Organ / stage
- cotyledon stagee1
- Treatment
- Seed treatments of 250 µmol/mole1
- Outcome
- lateral root productione1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CPPU (N-(2-chloro-4-pyridinyl)-N’-phenylurea) Enhancement of Cotton Yields”
e1“Seed treatments of 250 µmol/mol or seedling sprays of 5 µmol/mol at the cotyledon stage, increased lateral root production”
Claim · model-written summary
Seedling sprays with 5 µmol/mol CPPU at the cotyledon stage increased lateral root production in cotton
- Taxon
- CottonGossypium hirsutumt0
- Organ / stage
- cotyledon stagee1
- Treatment
- seedling sprays of 5 µmol/mole1
- Outcome
- lateral root productione1
- Direction
- increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CPPU (N-(2-chloro-4-pyridinyl)-N’-phenylurea) Enhancement of Cotton Yields”
e1“Seed treatments of 250 µmol/mol or seedling sprays of 5 µmol/mol at the cotyledon stage, increased lateral root production”
Claim · model-written summary
Cotton yield increased by 8 to 20% in three years of dryland field studies, associated with increased rooting
- Taxon
- CottonGossypium hirsutumt0
- Outcome
- yield increasese2
- Direction
- increasese2
- Value
- 8 to 20%e2
- Qualifier
- associated with the increased rootinge2
- Setting
- field studies under dryland conditionse2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CPPU (N-(2-chloro-4-pyridinyl)-N’-phenylurea) Enhancement of Cotton Yields”
e2“Cotton yield increases associated with the increased rooting ranged from 8 to 20% in three years of field studies under dryland conditions”
Claim · model-written summary
The greatest cotton yield increases were associated with dry shallow soils
- Taxon
- CottonGossypium hirsutumt0
- Outcome
- yield increasese3
- Direction
- greateste3
- Setting
- dry shallow soilse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CPPU (N-(2-chloro-4-pyridinyl)-N’-phenylurea) Enhancement of Cotton Yields”
e3“The greatest yield increases were associated with dry shallow soils”
Claim · model-written summary
CPPU reduced water-deficit stress levels throughout the growing season in cotton compared with untreated cotton
- Taxon
- CottonGossypium hirsutumt0
- Treatment
- CPPUe4
- Outcome
- water-deficit stress levelse4
- Direction
- reducede4
- Comparator
- untreatede4
- Setting
- growing seasone4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“CPPU (N-(2-chloro-4-pyridinyl)-N’-phenylurea) Enhancement of Cotton Yields”
e4“Evaluation of water-deficit stress levels in untreated and CPPU-treated cotton showed reduced water-deficit stress levels throughout the growing season in the CPPU-treated cotton”
The same questions in other papers
seed treatment · yield · Gossypium hirsutum (cotton)Positive and negative results
36 papers in the same direction as this paper · 3 in the opposite direction
- no effect
- no effect
- no effect
36 papers more in this group
See all 40 papers →application · yield · Gossypium hirsutum (cotton)Positive and negative results
252 papers in the same direction as this paper · 27 in the opposite direction · 3 reporting no difference from an alternative
- no effect
- negative
- negative
279 papers more in this group
See all 283 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.