Abstract
Nitrogen fertilizer management for burley tobacco is necessary to achieve optimum yield. Improper N application can reduce growth and produce poor leaf quality. Current N recommendations for burley tobacco are based on older cultivars. Cultivars (TN 90, KT 204, NC 2000, and NC 7) with improved yield and disease resistance have recently been developed. These cultivars were compared to a high yielding older cultivar, Clay's HY 403, that is susceptible to various diseases. All cultivar treatments received four N treatments (broadcast plus side‐dress) of 112, 168, 224, and 280 kg N per ha. Experiments were conducted in 2005, 2006, and 2007 at the Upper Mountain Research Station, Laurel Springs, NC, and two sites at the Mountain Research Station, Waynesville, NC. Nitrogen rate affected tobacco height, time of flowering, and yield at each location, with the 224 kg N per ha rate adequate for optimum burley tobacco yield. Highest yields were produced with the 224 kg N per ha rate on seven of nine location/years, and the 280 kg N per ha rate in two of nine location/years. Leaf quality was not influenced by N rate. Recently developed burley cultivars (TN 90, KT 204, NC 2000, and NC 7) with enhanced disease resistance produced yields equivalent to an older cultivar (Clay's HY 403), and increased yields greater than Clay's HY 403 when blue mold ( Peronospora tabacina ) was present.
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Claims 7
Claim · model-written summary
Nitrogen rate affected burley tobacco height, time of flowering and yield.
Verbatim
e0“Nitrogen fertilizer management for burley tobacco is necessary to achieve optimum yield”
e1“Nitrogen rate affected tobacco height, time of flowering, and yield at each location, with the 224 kg N per ha rate adequate for optimum burley tobacco yield”
Claim · model-written summary
A nitrogen rate of 224 kg N per ha is recommended for optimum burley tobacco yield.
Verbatim
e1“Nitrogen rate affected tobacco height, time of flowering, and yield at each location, with the 224 kg N per ha rate adequate for optimum burley tobacco yield”
Claim · model-written summary
The 224 kg N per ha rate gave the highest yields in seven of nine location-years.
- Taxon
- burley tobaccoe0
- Treatment
- 224 kg N per ha ratee2
- Outcome
- Highest yieldse2
- Direction
- Higheste2
- Value
- seven of nine location/yearse2
Not reportedComparator
Verbatim
e0“Nitrogen fertilizer management for burley tobacco is necessary to achieve optimum yield”
e2“Highest yields were produced with the 224 kg N per ha rate on seven of nine location/years, and the 280 kg N per ha rate in two of nine location/years”
Claim · model-written summary
The 280 kg N per ha rate gave the highest yields in two of nine location-years.
- Taxon
- burley tobaccoe0
- Treatment
- 280 kg N per ha ratee2
- Outcome
- Highest yieldse2
- Direction
- Higheste2
- Value
- two of nine location/yearse2
Not reportedComparator
Verbatim
e0“Nitrogen fertilizer management for burley tobacco is necessary to achieve optimum yield”
e2“Highest yields were produced with the 224 kg N per ha rate on seven of nine location/years, and the 280 kg N per ha rate in two of nine location/years”
Claim · model-written summary
Nitrogen rate did not influence burley tobacco leaf quality.
Not reportedComparator
Verbatim
e0“Nitrogen fertilizer management for burley tobacco is necessary to achieve optimum yield”
e3“Leaf quality was not influenced by N rate”
Claim · model-written summary
Recently developed burley cultivars produced yields equivalent to the older cultivar Clay's HY 403.
Verbatim
e0“Nitrogen fertilizer management for burley tobacco is necessary to achieve optimum yield”
e4“Recently developed burley cultivars (TN 90, KT 204, NC 2000, and NC 7) with enhanced disease resistance produced yields equivalent to an older cultivar (Clay's HY 403)”
Claim · model-written summary
Recently developed burley cultivars increased yields above Clay's HY 403 when blue mold was present.
- Taxon
- burley tobaccoe0
- Treatment
- Recently developed burley cultivarse4
- Interactor
- Peronospora tabacina
Peronospora tabacinae5pathogen - Outcome
- yieldse5
- Direction
- increasede5
- Qualifier
- when blue molde5
- Comparator
- Clay's HY 403e5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Nitrogen fertilizer management for burley tobacco is necessary to achieve optimum yield”
e4“Recently developed burley cultivars (TN 90, KT 204, NC 2000, and NC 7) with enhanced disease resistance produced yields equivalent to an older cultivar (Clay's HY 403)”
e5“and increased yields greater than Clay's HY 403 when blue mold ( Peronospora tabacina ) was present”
The same questions in other papers
nitrogen · quality: general · Nicotiana tabacum (tobacco)Positive and negative results
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- positive
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See all 39 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.