Abstract
ABSTRACT Tobacco seedling plant biomass responses to growing media nutrient regimes at transplanting are fundamental yield determinants of the leaf crop in the field. A study was carried out to determine the effect of nutrient deficiencies on tobacco seedling leaf counts, stem height, and girth grown in potted sand media under greenhouse conditions. Thirty clay pots were filled with sand media subjected to nine different nutrient deficient and one complete stock solution treatments in a complete randomized block. Results show that a complete content of vital nutrients supported the tallest stems of 64.3 cm while potassium deficiency stunted stems the most (9.3 cm). Deficiency of nitrogen (N), calcium (Ca), and phosphorus (P) reduced stem heights by 77–79%. Copper (Cu), N, potassium (K), and P nutrient deficiency induced the thinnest stems, which were 2.23–2.70 mm or 43.8–53% thinner than those in the control media. When compared with stem heights in the complete nutrient combination, the smallest reductions of 1.0 mm in stem girths were recorded in manganese (Mn) and zinc (Zn) deficient variants. The largest reduction in leaf emergence was recorded in sand media subjected to P and K deficiencies where a 64% reduction in leaf count was recorded. The functional group nutrient deficiencies effect on tobacco seedling biomass responses is reported in this study where any member of distinct functional groups of nutrients: (Mn and Zn); [Ca, magnesium (Mg), and iron (Fe)]; (Cu, N, K, and P) classified by similar general functions in cell metabolism, induced similar nutrient deficiency effects to those of the group on seedling biomass parameters.
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Claims 13
Claim · model-written summary
Complete nutrient solution produced the tallest stems at 64.3 cm.
- Taxon
- Tobacco
Nicotiana tabacumt0 - Treatment
- complete content of vital nutrientse0
- Outcome
- tallest stemse0
- Direction
- talleste0
- Value
- 64.3 cme0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“a complete content of vital nutrients supported the tallest stems of 64.3 cm while potassium deficiency stunted stems the most (9.3 cm)”
t0“Tobacco”
Claim · model-written summary
Potassium deficiency gave the shortest stems at 9.3 cm.
- Taxon
- TobaccoNicotiana tabacumt0
- Treatment
- potassium deficiencye0
- Outcome
- stemse0
- Direction
- stuntede0
- Value
- 9.3 cme0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potassium deficiency stunted stems the most (9.3 cm)”
t0“Tobacco”
Claim · model-written summary
Nitrogen deficiency reduced stem height by 77–79%.
- Taxon
- TobaccoNicotiana tabacumt0
- Treatment
- Deficiency of nitrogen (N)e0
- Outcome
- stem heightse0
- Direction
- reducede0
- Value
- 77–79%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Deficiency of nitrogen (N), calcium (Ca), and phosphorus (P) reduced stem heights by 77–79%”
t0“Tobacco”
Claim · model-written summary
Calcium deficiency reduced stem height by 77–79%.
- Taxon
- TobaccoNicotiana tabacumt0
- Treatment
- calcium (Ca)e0
- Outcome
- stem heightse0
- Direction
- reducede0
- Value
- 77–79%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Deficiency of nitrogen (N), calcium (Ca), and phosphorus (P) reduced stem heights by 77–79%”
t0“Tobacco”
Claim · model-written summary
Phosphorus deficiency reduced stem height by 77–79%.
- Taxon
- TobaccoNicotiana tabacumt0
- Treatment
- phosphorus (P)e0
- Outcome
- stem heightse0
- Direction
- reducede0
- Value
- 77–79%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Deficiency of nitrogen (N), calcium (Ca), and phosphorus (P) reduced stem heights by 77–79%”
t0“Tobacco”
Claim · model-written summary
Copper deficiency yielded stems 43.8–53% thinner than control.
- Taxon
- TobaccoNicotiana tabacumt0
- Treatment
- Copper (Cu)e0
- Outcome
- stemse0
- Direction
- thinnere0
- Value
- 43.8–53%e0
- Comparator
- control mediae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Copper (Cu), N, potassium (K), and P nutrient deficiency induced the thinnest stems, which were 2.23–2.70 mm or 43.8–53% thinner than those in the control media”
t0“Tobacco”
Claim · model-written summary
N deficiency yielded stems 43.8–53% thinner than control.
- Taxon
- TobaccoNicotiana tabacumt0
- Treatment
- Ne0
- Outcome
- stemse0
- Direction
- thinnere0
- Value
- 43.8–53%e0
- Comparator
- control mediae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Copper (Cu), N, potassium (K), and P nutrient deficiency induced the thinnest stems, which were 2.23–2.70 mm or 43.8–53% thinner than those in the control media”
t0“Tobacco”
Claim · model-written summary
Potassium deficiency yielded stems 43.8–53% thinner than control.
- Taxon
- TobaccoNicotiana tabacumt0
- Treatment
- potassium (K)e0
- Outcome
- stemse0
- Direction
- thinnere0
- Value
- 43.8–53%e0
- Comparator
- control mediae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Copper (Cu), N, potassium (K), and P nutrient deficiency induced the thinnest stems, which were 2.23–2.70 mm or 43.8–53% thinner than those in the control media”
t0“Tobacco”
Claim · model-written summary
P deficiency yielded stems 43.8–53% thinner than control.
- Taxon
- TobaccoNicotiana tabacumt0
- Treatment
- P nutrient deficiencye0
- Outcome
- stemse0
- Direction
- thinnere0
- Value
- 43.8–53%e0
- Comparator
- control mediae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Copper (Cu), N, potassium (K), and P nutrient deficiency induced the thinnest stems, which were 2.23–2.70 mm or 43.8–53% thinner than those in the control media”
t0“Tobacco”
Claim · model-written summary
Manganese deficiency reduced stem girth by 1.0 mm.
- Taxon
- TobaccoNicotiana tabacumt0
- Treatment
- manganese (Mn)e0
- Outcome
- stem girthse0
- Direction
- reductionse0
- Value
- 1.0 mme0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the smallest reductions of 1.0 mm in stem girths were recorded in manganese (Mn) and zinc (Zn) deficient variants”
t0“Tobacco”
Claim · model-written summary
Zinc deficiency reduced stem girth by 1.0 mm.
- Taxon
- TobaccoNicotiana tabacumt0
- Treatment
- zinc (Zn)e0
- Outcome
- stem girthse0
- Direction
- reductionse0
- Value
- 1.0 mme0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the smallest reductions of 1.0 mm in stem girths were recorded in manganese (Mn) and zinc (Zn) deficient variants”
t0“Tobacco”
Claim · model-written summary
Phosphorus deficiency reduced leaf count by 64%.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The largest reduction in leaf emergence was recorded in sand media subjected to P and K deficiencies where a 64% reduction in leaf count was recorded”
t0“Tobacco”
Claim · model-written summary
Potassium deficiency reduced leaf count by 64%.
- Taxon
- TobaccoNicotiana tabacumt0
- Treatment
- K deficienciese0
- Outcome
- leaf counte0
- Direction
- reductione0
- Value
- 64%e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The largest reduction in leaf emergence was recorded in sand media subjected to P and K deficiencies where a 64% reduction in leaf count was recorded”
t0“Tobacco”
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See all 73 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.