Abstract
Soils in the Sudbury mining and smelting region have been rendered phytotoxic and barren by acidification and particulate metal contamination, but can be detoxified and revegetated by the surface application of ground limestone. On certain barren sites, plant growth is better on soil treated with dolomitic limestone than with calcitic limestone, and greenhouse experiments using mung beans (Vigna radiata) have shown superior root and shoot growth on certain contaminated soils when the limestone is dolomitic rather than calcitic. Results of experiments with species used in revegetation (Agrostis gigantea and Lotus corniculatus) suggest that leguminous species are more sensitive to Ca:Mg ratio than grasses, that the plant response to this ratio is greater at lower liming levels, and that the response is more marked on more toxic soils. The effects of calcium:magnesium ratio of the limestone used in revegetating acidic, metal-contaminated soils are clearly complex, interactive and difficult to interpret. Further studies are needed, but meanwhile it is recommended that the practice of using dolomitic limestone to detoxify barren Sudbury soils be continued, since there is a risk of induced magnesium deficiency at certain sites when calcitic limestone is used.
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Claims 6
Claim · model-written summary
Plant growth on some barren sites was better with dolomitic than calcitic limestone.
Verbatim
e0“On certain barren sites, plant growth is better on soil treated with dolomitic limestone than with calcitic limestone”
Claim · model-written summary
Mung bean roots and shoots grew better with dolomitic than calcitic limestone.
- Taxon
- mung beans (Vigna radiata)
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Vigna radiatae0 - Treatment
- dolomitice0
- Outcome
- root and shoot growthe0
- Direction
- superiore0
- Comparator
- calcitice0
- Setting
- greenhousee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“greenhouse experiments using mung beans (Vigna radiata) have shown superior root and shoot growth on certain contaminated soils when the limestone is dolomitic rather than calcitic”
Claim · model-written summary
Leguminous species appeared more sensitive to Ca:Mg ratio than grasses.
Verbatim
e0“leguminous species are more sensitive to Ca:Mg ratio than grasses”
Claim · model-written summary
Plant response to the ratio was greater at lower liming levels.
Verbatim
e0“the plant response to this ratio is greater at lower liming levels”
Claim · model-written summary
The response was more marked on more toxic soils.
Verbatim
e0“the response is more marked on more toxic soils”
t0“VE GET A TING”
e1“On certain barren sites, plant growth is better on soil treated with dolomitic limestone than with calcitic limestone”
Claim · model-written summary
The authors recommend continuing dolomitic limestone on barren Sudbury soils.
Verbatim
e0“it is recommended that the practice of using dolomitic limestone to detoxify barren Sudbury soils be continued”
t0“VE GET A TING”
e1“On certain barren sites, plant growth is better on soil treated with dolomitic limestone than with calcitic limestone”
The same questions in other papers
lime · growth · Vigna radiata (mung bean)Positive and negative results
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See all 8 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.