Abstract
Abstract Improved fertilizer management systems for hurley tobacco ( Nicotiana tabacum L.) are needed to reduce the detrimental effects of large applications of fertilizer, such as fertilizer‐induced soil acidity and Mn toxicity. Field studies were conducted at several locations in Kentucky during 1980 to 1986 to examine the response of tobacco to rates and methods (band vs. broadcast) of application of N‐P‐K fertilizer. Response to banding N‐P‐K fertilizer varied widely among experimental sites and was related to level of NH 4 OAC‐extractable soil K. At low soil K levels, greater dry matter and cured leaf yields occurred most often for broadcast compared with banded fertilizer. These effects probably resulted from factors affecting the efficient use of K by the plant, including the greater numbers of roots in contact with fertilizer in broadcast treatments. At high soil‐test K levels, greater growth and yield occurred more often from band treatments (as opposed to broadcast). This probably resulted from a reduction in toxic Mn levels and fertilizer salt injury, and from a more favorable balance between K and other nutrients in band treatments. A linear regression revealed that yields from band and broadcast treatments were equal when initial soil‐test K measured 248 kg ha −1 . In soils testing high in P and K, the content of plant Mn increased linearly with rate of N‐P‐K fertilizer in broadcast treatments, whereas it was unaffected by fertilizer rate when the fertilizer was banded.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 8
Claim · model-written summary
The response of tobacco to banded N-P-K fertilizer was related to the NH4OAC-extractable soil K level and varied among sites.
- Taxon
- Tobacco
Nicotiana tabacumt0 - Treatment
- banding N‐P‐K fertilizere1
- Compound
- NH 4 OAC‐extractable soil Ke1
- Outcome
- Responsee1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Burley Tobacco”
e1“Response to banding N‐P‐K fertilizer varied widely among experimental sites and was related to level of NH 4 OAC‐extractable soil K”
Claim · model-written summary
At low soil K levels, broadcast fertilizer gave greater dry matter and cured leaf yields of tobacco than banded fertilizer.
- Taxon
- TobaccoNicotiana tabacumt0
- Treatment
- broadcaste1
- Outcome
- dry matter and cured leaf yieldse1
- Direction
- greatere1
- Qualifier
- At low soil K levelse1
- Comparator
- banded fertilizere1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Burley Tobacco”
e1“At low soil K levels, greater dry matter and cured leaf yields occurred most often for broadcast compared with banded fertilizer”
Claim · model-written summary
The broadcast advantage at low soil K probably resulted from factors affecting the efficient use of K by the plant.
- Taxon
- TobaccoNicotiana tabacumt0
- Outcome
- These effectse1
- Qualifier
- factors affecting the efficient use of K by the plante1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Burley Tobacco”
e1“These effects probably resulted from factors affecting the efficient use of K by the plant, including the greater numbers of roots in contact with fertilizer in broadcast treatments”
Claim · model-written summary
At high soil-test K levels, band treatments gave greater tobacco growth and yield than broadcast.
- Taxon
- TobaccoNicotiana tabacumt0
- Treatment
- band treatmentse1
- Outcome
- growth and yielde1
- Direction
- greatere1
- Qualifier
- At high soil‐test K levelse1
- Comparator
- broadcaste1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Burley Tobacco”
e1“At high soil‐test K levels, greater growth and yield occurred more often from band treatments (as opposed to broadcast)”
Claim · model-written summary
The band advantage at high soil K probably resulted from a reduction in toxic Mn levels and fertilizer salt injury.
- Taxon
- TobaccoNicotiana tabacumt0
- Outcome
- growth and yielde1
- Qualifier
- a reduction in toxic Mn levels and fertilizer salt injurye2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Burley Tobacco”
e1“greater growth and yield occurred more often from band treatments (as opposed to broadcast)”
e2“This probably resulted from a reduction in toxic Mn levels and fertilizer salt injury”
Claim · model-written summary
Band and broadcast treatments gave equal yields when initial soil-test K was 248 kg ha-1.
- Taxon
- TobaccoNicotiana tabacumt0
- Treatment
- bande1
- Outcome
- yieldse1
- Direction
- no_changeinferrede1
- Qualifier
- when initial soil‐test K measured 248 kg ha −1e1
- Comparator
- broadcaste1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Burley Tobacco”
e1“A linear regression revealed that yields from band and broadcast treatments were equal when initial soil‐test K measured 248 kg ha −1”
Claim · model-written summary
In soils high in P and K, plant Mn content increased linearly with rate of N-P-K fertilizer in broadcast treatments.
- Taxon
- TobaccoNicotiana tabacumt0
- Treatment
- rate of N‐P‐K fertilizere1
- Outcome
- content of plant Mne1
- Direction
- increased linearlye1
- Qualifier
- In soils testing high in P and Ke1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Burley Tobacco”
e1“In soils testing high in P and K, the content of plant Mn increased linearly with rate of N‐P‐K fertilizer in broadcast treatments”
Claim · model-written summary
Plant Mn content was unaffected by fertilizer rate when the fertilizer was banded.
- Taxon
- TobaccoNicotiana tabacumt0
- Treatment
- fertilizer ratee2
- Outcome
- content of plant Mne1
- Direction
- no_changeinferrede2
- Qualifier
- when the fertilizer was bandede2
- Comparator
- broadcast treatmentse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Burley Tobacco”
e1“In soils testing high in P and K, the content of plant Mn increased linearly with rate of N‐P‐K fertilizer in broadcast treatments”
e2“whereas it was unaffected by fertilizer rate when the fertilizer was banded”
The same questions in other papers
fertilization · molecular: metabolites · Nicotiana tabacum (tobacco)Results differ
8 papers in the same direction as this paper · 72 reporting no difference from an alternative
- positive
- positive
- positive
77 papers more in this group
See all 81 papers →transplanting · yield · Nicotiana tabacum (tobacco)Positive and negative results
32 papers in the same direction as this paper · 7 in the opposite direction · 1 reporting no difference from an alternative
- negative
- negative
- negative
37 papers more in this group
See all 41 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.