Abstract
Abstract Maintaining soil productivity on land cropped to burley tobacco ( Nicotiana tabacum L.) requires management practices that conserve surface soil and retain high soil nitrogen (N) availability. This study was established to determine N uptake by burley tobacco grown under conservation-tillage (strip-tillage in grass residue) and cultivation (plow/disc or deep rototilling) on both a Ferric Acrisol (Typic Rhodudult) and a Dystric Cambisol (Fluvaquentic Dystrochrept) soil of Western North Carolina, USA. Burley tobacco was established in 1994 and 1995 under these two tillage treatments to measure N uptake and soil inorganic N during the growing season. Plant biomass measurements at 6 weeks after transplant, midseason, and harvest showed similar plant weights, flowering % by time, leaf petiole nitrate-N, and total plant N uptake across treatments. Only plant height in 1 of 2 years was greater in strip-till than cultivation treatments. Tobacco cured leaf yield and grade were not significantly different between the tillage treatments each year. Soil inorganic N measurements from coring 4 weeks after side dress had high nitrate-N and ammonium-N in the 0–15 cm depth each year for both tillage treatments. Soil N was not significantly different between tillage treatments. Conservation tillage management systems for burley tobacco can result in yields and plant N accrual levels equal to those of cultivated soils.
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 6
Claim · model-written summary
Plant weights, flowering and leaf nitrate were similar across tillage treatments.
Verbatim
e0“Plant biomass measurements at 6 weeks after transplant, midseason, and harvest showed similar plant weights, flowering % by time, leaf petiole nitrate-N, and total plant N uptake across treatments.”
e1“conservation-tillage (strip-tillage in grass residue) and cultivation”
t0“BURLEY TOBACCO”
Claim · model-written summary
Total plant nitrogen uptake was similar across tillage treatments.
Verbatim
e0“Plant biomass measurements at 6 weeks after transplant, midseason, and harvest showed similar plant weights, flowering % by time, leaf petiole nitrate-N, and total plant N uptake across treatments.”
e1“conservation-tillage (strip-tillage in grass residue) and cultivation”
t0“BURLEY TOBACCO”
Claim · model-written summary
Strip tillage increased plant height in one of two years.
Verbatim
e0“Only plant height in 1 of 2 years was greater in strip-till than cultivation treatments.”
t0“BURLEY TOBACCO”
Claim · model-written summary
Cured leaf yield and grade did not differ significantly between tillage treatments.
- Taxon
- Tobacco
Nicotiana tabacume0 - Treatment
- strip-tillage in grass residuee1
- Outcome
- cured leaf yield and gradee0
- Direction
- not significantly differente0
- Comparator
- cultivatione1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tobacco cured leaf yield and grade were not significantly different between the tillage treatments each year.”
e1“conservation-tillage (strip-tillage in grass residue) and cultivation”
Claim · model-written summary
Soil nitrogen did not differ significantly between tillage treatments.
Verbatim
e0“Soil N was not significantly different between tillage treatments.”
e1“conservation-tillage (strip-tillage in grass residue) and cultivation”
t0“BURLEY TOBACCO”
Claim · model-written summary
Conservation tillage can achieve yields and nitrogen accrual equal to cultivated soils.
Verbatim
e0“Conservation tillage management systems for burley tobacco can result in yields and plant N accrual levels equal to those of cultivated soils.”
The same questions in other papers
tillage · nutrient: content · Nicotiana tabacum (tobacco)Positive and negative results
4 in the opposite direction
- positive
- positive
- positive
1 paper more in this group
See all 5 papers →tillage · growth · Nicotiana tabacum (tobacco)Positive and negative results
5 papers in the same direction as this paper · 2 in the opposite direction
- no effect
- negative
- positive
4 papers more in this group
See all 8 papers →tillage · yield · Nicotiana tabacum (tobacco)Positive and negative results
7 papers in the same direction as this paper · 8 in the opposite direction
- positive
- positive
- negative
12 papers more in this group
See all 16 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.