Abstract
Abstract A greenhouse experiment was conducted to determine if unleached volcanic ash from the 18 May 1980 eruption of Mount St. Helens would affect plant growth and uptake of N, P, K, Zn, and Cd. The electrical conductivity of the ash was 5.0 dS m −1 , and contained moderate amounts of available P, Ca, Mg, and SO 4 . Total Cd was 6 µ g g −1 , which is greater than that of most western soils. Swiss chard ( Beta vulgaris cicla L.) and barley ( Hordeum vulgare L.) were grown in Ritzville silt loam soil (mesic Calciorthidic Haploxerolls) amended with ash at rates of 0, 50, 100, 200, or 400 g kg −1 , or with sand at the rate of 200 g kg −1 . One‐half of all soils received wheat straw ( Triticum aestivum L.) to increase microbial activity. No adverse effects on either swiss chard or barley were found with ash amendments, with or without wheat straw additions. The addition of ash increased concentrations of Zn in swiss chard, but barley Zn concentrations were unchanged by ash amendments. The Cd concentration was below detectable limits in barley for all treatments and was decreased by ash amendments in swiss chard, with or without incorporated wheat straw.
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Claims 6
Claim · model-written summary
Ash amendments caused no adverse effects on swiss chard growth, with or without wheat straw.
- Taxon
- swiss chard
Beta vulgaris subsp. vulgarise0 - Treatment
- ash amendmentse0
- Outcome
- adverse effectse0
- Direction
- No adverse effectse0
- Qualifier
- with or without wheat straw additionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“No adverse effects on either swiss chard or barley were found with ash amendments, with or without wheat straw additions.”
Claim · model-written summary
Ash amendments caused no adverse effects on barley growth, with or without wheat straw.
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaree0 - Treatment
- ash amendmentse0
- Outcome
- adverse effectse0
- Direction
- No adverse effectse0
- Qualifier
- with or without wheat straw additionse0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“No adverse effects on either swiss chard or barley were found with ash amendments, with or without wheat straw additions.”
Claim · model-written summary
Ash increased Zn concentrations in swiss chard.
- Taxon
- swiss chardBeta vulgaris subsp. vulgarise0
- Treatment
- addition of ashe0
- Outcome
- concentrations of Zne0
- Direction
- increasede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The addition of ash increased concentrations of Zn in swiss chard”
Claim · model-written summary
Barley Zn concentrations were unchanged by ash.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- ash amendmentse0
- Outcome
- barley Zn concentrationse0
- Direction
- unchangede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“barley Zn concentrations were unchanged by ash amendments.”
Claim · model-written summary
Barley Cd concentrations were below detection for all treatments.
- Taxon
- barleyHordeum vulgaree0
- Outcome
- Cd concentratione0
- Qualifier
- below detectable limitse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The Cd concentration was below detectable limits in barley for all treatments”
Claim · model-written summary
Ash decreased Cd concentrations in swiss chard with or without wheat straw.
- Taxon
- swiss chardBeta vulgaris subsp. vulgarise0
- Treatment
- ash amendmentse0
- Outcome
- Cd concentratione1
- Direction
- decreasede0
- Qualifier
- with or without incorporated wheat strawe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“was decreased by ash amendments in swiss chard, with or without incorporated wheat straw.”
e1“The Cd concentration was below detectable limits in barley for all treatments and was decreased by ash amendments in swiss chard”
The same questions in other papers
other · nutrient: content · Hordeum vulgare (barley)Positive and negative results
3 papers in the same direction as this paper · 15 in the opposite direction
- positive
- positive
- positive
15 papers more in this group
See all 19 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.