Abstract
Abstract During the 1967 and 1968 growing seasons flue‐cured tobacco was grown on a Cecil fine sandy loam and on Appling sandy loam on adjacent sites. Soil fumigation treatments included check (none), ridge and broadcast applications. Nitrogen was applied as all nitrate, all ammonium, half nitrate‐half ammonium, or half nitrate‐half ammonium with a nitrate sidedressing. More rapid plant growth on the Appling soil late in the growing season resulted in a higher yield of cured leaves which was also reflected in a higher crop value. Differences in physical characteristics of the soil and especially internal drainage seem to be responsible for the better plant growth obtained on the Appling soil. Application of all fertilizer nitrogen as NH 4 resulted in the lowest yield and value of cured leaves during the first season. The NO 3 ‐NH 4 ratio of the applied fertilizer did not affect the quality of the crop produced or the ratio of stalk to leaf weight of the growing plants. During the second season lower quality cured leaves were obtained with the application of only NO 3 ‐N. This was apparently related to excess leaching of NO 3 ‐N resulting in a higher percentage of low quality leaves. None of the treatments significantly affected the total particulate matter, nicotine content, or puff counts per cigarette. Seasonal differences, reflecting mainly the influence of different rainfall patterns, resulted in big differences in yield and value of cured leaves.
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Claims 13
Claim · model-written summary
Tobacco grew more rapidly on Appling soil late in the season.
- Taxon
- tobacco
Nicotiana tabacume1 - Organ / stage
- late in the growing seasone0
- Outcome
- plant growthe0
- Direction
- More rapide0
- Setting
- Appling soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“More rapid plant growth on the Appling soil late in the growing season”
e1“flue‐cured tobacco was grown”
Claim · model-written summary
Appling soil produced higher cured-leaf yield.
- Taxon
- tobaccoNicotiana tabacume1
- Outcome
- yield of cured leavese0
- Direction
- highere0
- Setting
- Appling soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“on the Appling soil late in the growing season resulted in a higher yield of cured leaves”
e1“flue‐cured tobacco was grown”
Claim · model-written summary
Appling soil produced higher crop value.
- Taxon
- tobaccoNicotiana tabacume2
- Outcome
- crop valuee0
- Direction
- highere0
- Setting
- Appling soile1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a higher crop value”
e1“on the Appling soil late in the growing season”
e2“flue‐cured tobacco was grown”
Claim · model-written summary
Differences in soil physical properties, especially drainage, were inferred to explain better growth on Appling soil.
- Taxon
- tobaccoNicotiana tabacume1
- Outcome
- better plant growthe0
- Qualifier
- physical characteristics of the soil and especially internal drainagee0
- Setting
- Appling soile0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Differences in physical characteristics of the soil and especially internal drainage seem to be responsible for the better plant growth obtained on the Appling soil”
e1“flue‐cured tobacco was grown”
Claim · model-written summary
All fertilizer nitrogen as NH 4 gave the lowest cured-leaf yield in the first season.
- Taxon
- tobaccoNicotiana tabacume1
- Treatment
- all fertilizer nitrogen as NH 4e0
- Outcome
- yielde0
- Direction
- loweste0
- Qualifier
- during the first seasone0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of all fertilizer nitrogen as NH 4 resulted in the lowest yield and value of cured leaves during the first season”
e1“flue‐cured tobacco was grown”
Claim · model-written summary
All fertilizer nitrogen as NH 4 gave the lowest cured-leaf value in the first season.
- Taxon
- tobaccoNicotiana tabacume1
- Treatment
- all fertilizer nitrogen as NH 4e0
- Outcome
- value of cured leavese0
- Direction
- loweste0
- Qualifier
- during the first seasone0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of all fertilizer nitrogen as NH 4 resulted in the lowest yield and value of cured leaves during the first season”
e1“flue‐cured tobacco was grown”
Claim · model-written summary
Fertilizer nitrate-to-ammonium ratio did not affect tobacco crop quality.
- Taxon
- tobaccoNicotiana tabacume1
- Treatment
- NO 3 ‐NH 4 ratio of the applied fertilizere0
- Outcome
- quality of the crop producede0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The NO 3 ‐NH 4 ratio of the applied fertilizer did not affect the quality of the crop produced”
e1“flue‐cured tobacco was grown”
Claim · model-written summary
Fertilizer nitrate-to-ammonium ratio did not affect stalk-to-leaf weight ratio.
- Taxon
- tobaccoNicotiana tabacume1
- Treatment
- NO 3 ‐NH 4 ratio of the applied fertilizere0
- Outcome
- ratio of stalk to leaf weighte0
- Direction
- did not affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The NO 3 ‐NH 4 ratio of the applied fertilizer did not affect the quality of the crop produced or the ratio of stalk to leaf weight of the growing plants”
e1“flue‐cured tobacco was grown”
Claim · model-written summary
Nitrate-only application produced lower quality cured leaves in the second season.
- Taxon
- tobaccoNicotiana tabacume1
- Treatment
- application of only NO 3 ‐Ne0
- Outcome
- quality cured leavese0
- Direction
- lowere0
- Qualifier
- During the second seasone0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“During the second season lower quality cured leaves were obtained with the application of only NO 3 ‐N”
e1“flue‐cured tobacco was grown”
Claim · model-written summary
Nitrate leaching was inferred to raise the fraction of low-quality leaves.
- Taxon
- tobaccoNicotiana tabacume1
- Outcome
- percentage of low quality leavese0
- Qualifier
- excess leaching of NO 3 ‐Ne0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“excess leaching of NO 3 ‐N resulting in a higher percentage of low quality leaves”
e1“flue‐cured tobacco was grown”
Claim · model-written summary
Treatments did not significantly affect total particulate matter, nicotine content, or puff counts per cigarette.
- Taxon
- tobaccoNicotiana tabacume1
- Treatment
- treatmentse0
- Outcome
- total particulate matter, nicotine content, or puff counts per cigarettee0
- Direction
- Nonee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“None of the treatments significantly affected the total particulate matter, nicotine content, or puff counts per cigarette”
e1“flue‐cured tobacco was grown”
Claim · model-written summary
Seasonal rainfall differences were associated with large cured-leaf yield differences.
- Taxon
- tobaccoNicotiana tabacume1
- Outcome
- yielde0
- Direction
- big differencese0
- Qualifier
- different rainfall patternse0
- Setting
- Seasonale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seasonal differences, reflecting mainly the influence of different rainfall patterns, resulted in big differences in yield and value of cured leaves”
e1“flue‐cured tobacco was grown”
Claim · model-written summary
Seasonal rainfall differences were associated with large cured-leaf value differences.
- Taxon
- tobaccoNicotiana tabacume1
- Outcome
- value of cured leavese0
- Direction
- big differencese0
- Qualifier
- different rainfall patternse0
- Setting
- Seasonale0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Seasonal differences, reflecting mainly the influence of different rainfall patterns, resulted in big differences in yield and value of cured leaves”
e1“flue‐cured tobacco was grown”
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