Abstract
Cured tobacco leaf of good quality was produced from plants grown in sand culture in a glass-house. A correlation was noted between potassium nutrition and quality, and moreover, poor quality leaf from low potassium levels showed similar symptoms to those of the 'trashy leaf' of commercial practice. It is concluded that potassium levels in the culture medium, and hence within the plant itself, are related to leaf area, leaf weight per unit area, and loss of fresh weight during curing-characteristics which find expression in the commercial grading system. Colour changes which appeared to be related to the level of potassium supplied were also observed during curing.
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Claims 4
Claim · model-written summary
Potassium nutrition correlated with cured tobacco leaf quality.
- Taxon
- tobacco
Nicotiana tabacume1 - Treatment
- potassium nutritione0
- Outcome
- qualitye0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A correlation was noted between potassium nutrition and quality”
e1“tobacco leaf”
Claim · model-written summary
Low potassium leaves had symptoms similar to commercial trashy leaf.
- Taxon
- tobaccoNicotiana tabacume1
- Treatment
- low potassium levelse0
- Outcome
- similar symptoms to those of the 'trashy leaf'e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“poor quality leaf from low potassium levels showed similar symptoms to those of the 'trashy leaf' of commercial practice”
e1“tobacco leaf”
Claim · model-written summary
Potassium level was related to leaf area, leaf weight per unit area and fresh weight loss during curing.
- Taxon
- tobaccoNicotiana tabacume1
- Treatment
- potassium levels in the culture mediume0
- Outcome
- leaf area, leaf weight per unit area, and loss of fresh weight during curinge0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“potassium levels in the culture medium, and hence within the plant itself, are related to leaf area, leaf weight per unit area, and loss of fresh weight during curing”
e1“tobacco leaf”
Claim · model-written summary
Curing color changes appeared related to potassium supply.
- Taxon
- tobaccoNicotiana tabacume1
- Treatment
- the level of potassium suppliede0
- Outcome
- Colour changese0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Colour changes which appeared to be related to the level of potassium supplied were also observed during curing.”
e1“tobacco leaf”