Abstract
Evidence is shown by the results obtained in this study that because of the high fixing power of the soils used, large quantities of lead could be added without harmful effects. When amounts at the rate of 7190 pounds of lead carbonate per acre were used, no detrimental effects on the growth of barley were observed. The tendency was for the growth of barley to be stimulated by minute quantities of soluble lead in the soil. A relationship appears to exist between the growth stimulation and the soluble lead content of the soil, with a tendency for maximum stimulation to occur when the concentration of soluble lead ranges between 0.1 to 0.4 p.p.m. PbO. Lead was found in the plants in both tops and roots, the concentration in the latter notably higher than in the tops. The tendency of the plants was to absorb greater quantities of lead with increasing concentrations of soluble lead in the soil. 18 references, 5 figures, 6 tables.
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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
High soil lead additions caused no harmful barley growth effect because of soil fixation.
- Taxon
- BARLEY
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Hordeum vulgaret0 - Treatment
- large quantities of leade0
- Outcome
- harmful effectse0
- Direction
- withoute0
- Qualifier
- high fixing power of the soils usede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“because of the high fixing power of the soils used, large quantities of lead could be added without harmful effects”
t0“BARLEY”
Claim · model-written summary
Lead carbonate at 7190 pounds per acre caused no detrimental effect on barley growth.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- 7190 pounds of lead carbonate per acree0
- Outcome
- growth of barleye0
- Direction
- no detrimental effectse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When amounts at the rate of 7190 pounds of lead carbonate per acre were used, no detrimental effects on the growth of barley were observed”
Claim · model-written summary
Minute quantities of soluble soil lead tended to stimulate barley growth.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- minute quantities of soluble lead in the soile0
- Outcome
- growth of barleye0
- Direction
- stimulatede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“growth of barley to be stimulated by minute quantities of soluble lead in the soil”
Claim · model-written summary
Growth stimulation was related to soluble soil lead and tended to peak at 0.1 to 0.4 p.p.m. PbO.
- Taxon
- BARLEYHordeum vulgaret0
- Treatment
- soluble lead content of the soile0
- Outcome
- growth stimulatione0
- Direction
- maximume0
- Value
- 0.1 to 0.4 p.p.m. PbOe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“A relationship appears to exist between the growth stimulation and the soluble lead content of the soil, with a tendency for maximum stimulation to occur when the concentration of soluble lead ranges between 0.1 to 0.4 p.p.m. PbO”
t0“BARLEY”
Claim · model-written summary
Lead was detected in barley tops and roots, at higher concentration in roots.
- Taxon
- BARLEYHordeum vulgaret0
- Organ / stage
- rootse0
- Outcome
- Lead was found in the plants in both tops and rootse0
- Direction
- highere0
- Comparator
- topse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Lead was found in the plants in both tops and roots, the concentration in the latter notably higher than in the tops”
t0“BARLEY”
Claim · model-written summary
Barley absorbed more lead as soluble soil lead concentration increased.
- Taxon
- BARLEYHordeum vulgaret0
- Treatment
- soluble lead in the soile0
- Outcome
- quantities of leade0
- Direction
- greatere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“absorb greater quantities of lead with increasing concentrations of soluble lead in the soil”
t0“BARLEY”
The same questions in other papers
lead atom · growth · Hordeum vulgare (barley)Results differ
1 paper in the same direction as this paper · 11 in the opposite direction
- negative
- negative
- negative
9 papers more in this group
See all 13 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.