Abstract
Tobacco plants in water culture exhibited the deficiency symptoms of both boron and manganese 15 and 20 days respectively after the commencement of the experiment. The symptoms became more pronounced with age and in the final stages, resulted in the premature death of plants. Optimum doses of 0.5 ppm of boron and 30 ppm of manganese, when supplied to the plants in sand culture, induced them to grow tall and produce large number of leaves of larger and broader size as compared to the control. Boron also prolonged the duration of flowering. By the application of both the elements in toxic doses in sand cultures, toxic symptoms appeared within 6 and 3 days respectively. Plants did not survive in extreme cases of toxicity.
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Claims 9
Claim · model-written summary
Boron deficiency symptoms appeared after 15 days.
- Taxon
- Tobacco
Nicotiana tabacume0 - Treatment
- borone0
- Outcome
- deficiency symptomse0
- Value
- 15e0
- Setting
- water culturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tobacco plants in water culture exhibited the deficiency symptoms of both boron and manganese 15 and 20 days respectively after the commencement of the experiment”
Claim · model-written summary
Manganese deficiency symptoms appeared after 20 days.
- Taxon
- TobaccoNicotiana tabacume0
- Treatment
- manganesee0
- Outcome
- deficiency symptomse0
- Value
- 20 dayse0
- Setting
- water culturee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Tobacco plants in water culture exhibited the deficiency symptoms of both boron and manganese 15 and 20 days respectively after the commencement of the experiment”
Claim · model-written summary
Deficiency symptoms worsened with age and eventually caused premature death.
- Taxon
- TobaccoNicotiana tabacume1
- Outcome
- premature death of plantse0
- Direction
- more pronounced with agee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The symptoms became more pronounced with age and in the final stages, resulted in the premature death of plants”
e1“Tobacco plants”
Claim · model-written summary
Optimal boron increased plant height and leaf number and size compared with control.
- Taxon
- TobaccoNicotiana tabacume1
- Treatment
- 0.5 ppm of borone0
- Outcome
- grow tall and produce large number of leaves of larger and broader sizee0
- Direction
- largere0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Optimum doses of 0.5 ppm of boron and 30 ppm of manganese, when supplied to the plants in sand culture, induced them to grow tall and produce large number of leaves of larger and broader size as compared to the control”
e1“Tobacco plants”
Claim · model-written summary
Optimal manganese increased plant height and leaf number and size compared with control.
- Taxon
- TobaccoNicotiana tabacume1
- Treatment
- 30 ppm of manganesee0
- Outcome
- grow tall and produce large number of leaves of larger and broader sizee0
- Direction
- largere0
- Comparator
- the controle0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Optimum doses of 0.5 ppm of boron and 30 ppm of manganese, when supplied to the plants in sand culture, induced them to grow tall and produce large number of leaves of larger and broader size as compared to the control”
e1“Tobacco plants”
Claim · model-written summary
Boron prolonged flowering duration.
- Taxon
- TobaccoNicotiana tabacume1
- Treatment
- Borone0
- Outcome
- duration of floweringe0
- Direction
- prolongede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Boron also prolonged the duration of flowering”
e1“Tobacco plants”
Claim · model-written summary
Toxic boron produced symptoms within 6 days.
- Taxon
- TobaccoNicotiana tabacume2
- Treatment
- borone1
- Outcome
- toxic symptomse0
- Value
- 6e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“By the application of both the elements in toxic doses in sand cultures, toxic symptoms appeared within 6 and 3 days respectively”
e1“boron and manganese”
e2“Tobacco plants”
Claim · model-written summary
Toxic manganese produced symptoms within 3 days.
- Taxon
- TobaccoNicotiana tabacume2
- Treatment
- manganesee1
- Outcome
- toxic symptomse0
- Value
- 3 dayse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“By the application of both the elements in toxic doses in sand cultures, toxic symptoms appeared within 6 and 3 days respectively”
e1“boron and manganese”
e2“Tobacco plants”
Claim · model-written summary
Plants did not survive extreme toxicity.
- Taxon
- TobaccoNicotiana tabacume1
- Outcome
- did not survivee0
- Qualifier
- extreme cases of toxicitye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Plants did not survive in extreme cases of toxicity”
e1“Tobacco plants”
The same questions in other papers
manganese atom · disease · Nicotiana tabacum (tobacco)Positive and negative results
1 in the opposite direction
- positive
boron atom · disease · Nicotiana tabacum (tobacco)Positive and negative results
2 in the opposite direction
- positive
- positive
manganese atom · growth · Nicotiana tabacum (tobacco)Positive and negative results
2 papers in the same direction as this paper · 1 in the opposite direction
- negative
- positive
- positive
boron atom · growth · Nicotiana tabacum (tobacco)Positive and negative results
12 papers in the same direction as this paper · 4 in the opposite direction
- negative
- negative
- negative
13 papers more in this group
See all 17 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.