Abstract
In an outdoor trial with tobacco in sand culture, plants were supplied initially with inadequate magnesium for maximum leaf quality. The effects on quality and magnesium concentration of the cures leaf when magnesium supply was increased were studied.Magnesium passed preferentially to the leaves of poor quality at any leaf position depended on the time and size of the of the increase in nutrient magnesium.The longer the delay in adding magnesium at the optimum rate the greater the number of lower leaves of poor quality. Addition of magnesium at above optimum level improved the quality of the leaf lower on the stalk, but led to an accumulation of magnesium in the top leaf with a consequent reduction in quality.
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Claims 5
Claim · model-written summary
Magnesium passed preferentially to the leaves of poor quality, depending on the time and size of the increase in nutrient magnesium.
- Taxon
- tobacco
Nicotiana tabacumt0 - Compound
- Magnesiume0
- Outcome
- Magnesium passed preferentially to the leaves of poor qualitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“flue-cured tobacco”
e0“Magnesium passed preferentially to the leaves of poor quality”
Claim · model-written summary
The longer the delay in adding magnesium at the optimum rate, the greater the number of lower leaves of poor quality.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- delay in adding magnesium at the optimum ratee0
- Outcome
- number of lower leaves of poor qualitye0
- Direction
- greatere0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“flue-cured tobacco”
e0“The longer the delay in adding magnesium at the optimum rate the greater the number of lower leaves of poor quality”
Claim · model-written summary
Adding magnesium above the optimum level improved the quality of the leaf lower on the stalk.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- Addition of magnesium at above optimum levele0
- Outcome
- quality of the leaf lower on the stalke0
- Direction
- improvede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“flue-cured tobacco”
e0“Addition of magnesium at above optimum level improved the quality of the leaf lower on the stalk, but led to an accumulation of magnesium in the top leaf with a consequent reduction in quality”
Claim · model-written summary
Adding magnesium above the optimum level led to an accumulation of magnesium in the top leaf.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- Addition of magnesium at above optimum levele0
- Outcome
- magnesium in the top leafe0
- Direction
- accumulatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“flue-cured tobacco”
e0“Addition of magnesium at above optimum level improved the quality of the leaf lower on the stalk, but led to an accumulation of magnesium in the top leaf with a consequent reduction in quality”
Claim · model-written summary
Adding magnesium above the optimum level led to a consequent reduction in quality of the top leaf.
- Taxon
- tobaccoNicotiana tabacumt0
- Treatment
- Addition of magnesium at above optimum levele0
- Outcome
- qualitye0
- Direction
- reductione0
- Qualifier
- top leafe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“flue-cured tobacco”
e0“Addition of magnesium at above optimum level improved the quality of the leaf lower on the stalk, but led to an accumulation of magnesium in the top leaf with a consequent reduction in quality”
The same questions in other papers
magnesium atom · quality: general · Nicotiana tabacum (tobacco)Positive and negative results
8 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
6 papers more in this group
See all 10 papers →magnesium atom · nutrient: content · Nicotiana tabacum (tobacco)Positive and negative results
15 in the opposite direction
- positive
- positive
- positive
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.