Abstract
Although results from in vitro ovule culture studies have demonstrated a specific K requirement for fiber growth, a direct association between the K status of the cotton ( Gossypium hirsutum L.) plant and fiber quality has not been established under field conditions. To evaluate this relationship, a single cultivar (1985) and two cultivars (1986 and 1987) were grown with 0, 120, 240, or 480 kg K ha ‐1 in 10 blocked replicates of each K level on an irrigated, vermiculitic soil. There was a significant seed‐cotton yield response to applied K in each year. Lint yield, however, increased relatively more than seed yield, resulting in a greater lint percentage as plant K supply increased. The greater lint percentage reflected increased fiber length and secondary wall thickness (measured as a micronaire index) obtained from plants that received fertilizer K. For both cultivars, the fiber length, micronaire index, fiber strength and percent elongation, and fiber length uniformity ratio (dependent variables) were each positively related to (i) fiber K concentration at maturity, (ii) leaf K concentration at early bloom, and (iii) an index of soil K availability as independent variables in regression analyses. Comparison of cultivar regressions, however, indicated that fiber quality of ‘Acala GC510’ was higher than that of ‘Acala SJ2’ at low fiber, leaf, or soil K levels. We conclude that K supply to cotton fruit is an important determinant of fiber quality under field conditions, and that the K requirement for producing high lint yield with acceptable quality may differ among genotypes.
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Claims 11
Claim · model-written summary
Applied K significantly increased seed-cotton yield each year.
- Taxon
- cotton
Gossypium hirsutumt0 - Treatment
- applied Ke0
- Outcome
- seed‐cotton yielde0
- Direction
- responsee0
- Qualifier
- in each yeare0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was a significant seed‐cotton yield response to applied K in each year.”
t0“Acala Cotton”
Claim · model-written summary
Lint yield increased relatively more than seed yield with increasing plant K supply.
- Taxon
- cottonGossypium hirsutumt0
- Compound
- Ke0
- Outcome
- Lint yielde0
- Direction
- increasede0
- Qualifier
- as plant K supply increasede0
- Comparator
- seed yielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lint yield, however, increased relatively more than seed yield, resulting in a greater lint percentage as plant K supply increased.”
t0“Acala Cotton”
Claim · model-written summary
Lint percentage increased with plant K supply.
- Taxon
- cottonGossypium hirsutumt0
- Compound
- Ke0
- Outcome
- lint percentagee0
- Direction
- greatere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“resulting in a greater lint percentage as plant K supply increased.”
t0“Acala Cotton”
Claim · model-written summary
Fertilizer K increased fiber length.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- fertilizer Ke0
- Outcome
- fiber lengthe0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased fiber length and secondary wall thickness (measured as a micronaire index) obtained from plants that received fertilizer K.”
t0“Acala Cotton”
Claim · model-written summary
Fertilizer K increased secondary wall thickness.
- Taxon
- cottonGossypium hirsutumt0
- Treatment
- fertilizer Ke0
- Outcome
- secondary wall thicknesse0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“increased fiber length and secondary wall thickness (measured as a micronaire index) obtained from plants that received fertilizer K.”
t0“Acala Cotton”
Claim · model-written summary
Fiber length, micronaire index, fiber strength, elongation and uniformity were positively related to fiber K concentration at maturity.
- Taxon
- cottonGossypium hirsutumt0
- Compound
- fiber K concentration at maturitye0
- Outcome
- fiber length, micronaire index, fiber strength and percent elongation, and fiber length uniformity ratioe0
- Direction
- positively relatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For both cultivars, the fiber length, micronaire index, fiber strength and percent elongation, and fiber length uniformity ratio (dependent variables) were each positively related to (i) fiber K concentration at maturity, (ii) leaf K concentration at early bloom, and (iii) an index of soil K availability as independent variables in regression analyses.”
t0“Acala Cotton”
Claim · model-written summary
The fiber quality traits were positively related to leaf K concentration at early bloom.
- Taxon
- cottonGossypium hirsutumt0
- Compound
- leaf K concentration at early bloome0
- Outcome
- fiber length, micronaire index, fiber strength and percent elongation, and fiber length uniformity ratioe0
- Direction
- positively relatede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For both cultivars, the fiber length, micronaire index, fiber strength and percent elongation, and fiber length uniformity ratio (dependent variables) were each positively related to (i) fiber K concentration at maturity, (ii) leaf K concentration at early bloom, and (iii) an index of soil K availability as independent variables in regression analyses.”
t0“Acala Cotton”
Claim · model-written summary
The fiber quality traits were positively related to soil K availability.
- Taxon
- cottonGossypium hirsutumt0
- Outcome
- fiber length, micronaire index, fiber strength and percent elongation, and fiber length uniformity ratioe0
- Direction
- positively relatede0
- Setting
- soil K availabilitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For both cultivars, the fiber length, micronaire index, fiber strength and percent elongation, and fiber length uniformity ratio (dependent variables) were each positively related to (i) fiber K concentration at maturity, (ii) leaf K concentration at early bloom, and (iii) an index of soil K availability as independent variables in regression analyses.”
t0“Acala Cotton”
Claim · model-written summary
Acala GC510 had higher fiber quality than Acala SJ2 at low K levels.
- Taxon
- cottonGossypium hirsutumt0
- Material
- Acala GC510e0
- Outcome
- fiber qualitye0
- Direction
- highere0
- Qualifier
- at low fiber, leaf, or soil K levelse0
- Comparator
- Acala SJ2e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“fiber quality of ‘Acala GC510’ was higher than that of ‘Acala SJ2’ at low fiber, leaf, or soil K levels.”
t0“Acala Cotton”
Claim · model-written summary
The authors conclude that K supply to cotton fruit determines fiber quality in field conditions.
- Taxon
- cottonGossypium hirsutume0
- Compound
- Ke0
- Outcome
- fiber qualitye0
- Setting
- field conditionse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“We conclude that K supply to cotton fruit is an important determinant of fiber quality under field conditions”
Claim · model-written summary
The K requirement for high lint yield with acceptable quality may differ among genotypes.
- Taxon
- cottonGossypium hirsutumt0
- Outcome
- K requirement for producing high lint yield with acceptable qualitye0
- Qualifier
- may differ among genotypese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the K requirement for producing high lint yield with acceptable quality may differ among genotypes.”
t0“Acala Cotton”
The same questions in other papers
potassium · yield · Gossypium hirsutum (cotton)Results differ
85 papers in the same direction as this paper · 11 in the opposite direction
- no effect
- no effect
- positive
93 papers more in this group
See all 97 papers →fertilization · quality: grain · Gossypium hirsutum (cotton)Positive and negative results
81 papers in the same direction as this paper · 46 in the opposite direction · 1 reporting no difference from an alternative
- positive
- positive
- positive
125 papers more in this group
See all 129 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.