Abstract
Effects of nitrogen application rates,number of leaves,topping time and remaining leaves stalk position on economic indexes of Zimbabwe introduced flue-cured tobacco variety T29 were investigated.Results showed that no significant interaction effect existed between remaining leaves and nitrogen in main economic traits.Both cured leaf yield and commercial value were not significantly affected by nitrogen and remaining leaves treatments.No significant effects existed by nitrogen on class grade percentage,middle class grade percentage,grade index and 100-leaf weight.Class grade percentage and 100-leaf weight dropped in the treatment of 24 remaining leaves per plant.Topping at flower-bud appearing stage resulted in the greatest commercial value,class grade percentage and grade index.It is suggested that the production practices for T29 under middle soil quality condition were as follows:N application between 60.0 kg/hm~2 and 90.0 kg/hm~2,topping at flower-bud appearing stage with 21 remaining leaves per plant,and keeping remaining leaf stalk position from 5th to 26th.
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher.
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
Remaining leaves and nitrogen had no significant interaction on main economic traits.
- Taxon
- tobacco variety T29
Nicotiana tabacumt0 - Treatment
- remaining leaves and nitrogene0
- Outcome
- main economic traitse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“no significant interaction effect existed between remaining leaves and nitrogen in main economic traits”
t0“tobacco variety T29”
Claim · model-written summary
Nitrogen and remaining-leaf treatments did not significantly affect cured leaf yield or commercial value.
- Taxon
- tobacco variety T29Nicotiana tabacumt0
- Treatment
- nitrogen and remaining leaves treatmentse0
- Outcome
- cured leaf yield and commercial valuee0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Both cured leaf yield and commercial value were not significantly affected by nitrogen and remaining leaves treatments”
t0“tobacco variety T29”
Claim · model-written summary
Nitrogen did not significantly affect grade percentages, grade index or 100-leaf weight.
- Taxon
- tobacco variety T29Nicotiana tabacumt0
- Treatment
- nitrogene0
- Outcome
- class grade percentage,middle class grade percentage,grade indexe0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No significant effects existed by nitrogen on class grade percentage,middle class grade percentage,grade index and 100-leaf weight”
t0“tobacco variety T29”
Claim · model-written summary
Retaining 24 leaves lowered class grade percentage and 100-leaf weight.
- Taxon
- tobacco variety T29Nicotiana tabacumt0
- Treatment
- 24 remaining leaves per plante0
- Outcome
- Class grade percentage and 100-leaf weighte0
- Direction
- droppede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Class grade percentage and 100-leaf weight dropped in the treatment of 24 remaining leaves per plant”
t0“tobacco variety T29”
Claim · model-written summary
Topping at the flower-bud stage gave the greatest commercial value, class grade percentage and grade index.
- Taxon
- tobacco variety T29Nicotiana tabacumt0
- Treatment
- Topping at flower-bud appearing stagee0
- Outcome
- commercial value,class grade percentage and grade indexe0
- Direction
- greateste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Topping at flower-bud appearing stage resulted in the greatest commercial value,class grade percentage and grade index”
t0“tobacco variety T29”
Claim · model-written summary
The authors recommend 60–90 kg/hm2 nitrogen, topping at flower bud, 21 leaves, and leaf positions five through 26 for T29.
Verbatim
e0“N application between 60.0 kg/hm~2 and 90.0 kg/hm~2,topping at flower-bud appearing stage with 21 remaining leaves per plant,and keeping remaining leaf stalk position from 5th to 26th”
t0“T29”
The same questions in other papers
nitrogen · yield · Nicotiana tabacum (tobacco)Results differ
17 papers in the same direction as this paper · 85 in the opposite direction
- positive
- positive
- positive
99 papers more in this group
See all 103 papers →pruning · molecular: metabolites · Nicotiana tabacum (tobacco)Positive and negative results
22 papers in the same direction as this paper · 4 in the opposite direction
- negative
- negative
- negative
23 papers more in this group
See all 27 papers →nitrogen · molecular: metabolites · Nicotiana tabacum (tobacco)Positive and negative results
9 papers in the same direction as this paper · 35 in the opposite direction
- positive
- positive
- positive
41 papers more in this group
See all 45 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.