Abstract
Abstract A greenhouse experiment was conducted to compare the plant‐tissue accumulation of Cd and Zn by four cultivars of barley ( Hordeum vulgare L.) grown on three soils amended with 20 and 100 t/ha dried Imhoff tank sludges. Results indicated that metal uptakes by four cultivars of barley (Barsoy, Briggs, Florida 103, and Larker) were not significantly different when they were grown on both sludge‐treated and non‐sludge‐treated (control) soils. The Cd and Zn concentrations of the plant tissue from sludge‐treated soils, however, were significantly influenced by the sludge application and the soil type. For four cultivars of barley grown on the Ramona sandy loam soil, the Cd content of grain averaged < 0.04 (< 0.04–0.03) µ g/g at the control and increased to 0.38 (0.19–0.53) µ g/g at the 100‐t/ha sludge treatment. Under the sameconditions, the average Zn concentrations of barley grain were 41, 67, and 92 µ g/g for the control, 20‐t/ha, and 100‐t/ha treatments, respectively. Both soil texture and pH influenced Cd and Zn contents of barley. Crops grown on the Domino loam soil (fine, mixed, thermic Xerollic Calciorthid) accumulated the least amounts of Cd and Zn. At heavy sludge applications, higher levels of plant‐tissue Cd and Zn were often found in barley grown on soils of coarser texture (Ramona sandy loam [fine, mixed, thermic Typic Haploxeralf] and Greenfield sandy loam [coarse, mixed, thermic Typic Haploxeralf]) and lower pH (Ramona sandy loam, pH = 6.0).
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Claims 8
Claim · model-written summary
Metal uptake did not differ significantly among four barley cultivars grown on sludge-treated and control soils.
- Taxon
- barley
.jpg?width=60)
Hordeum vulgaree0 - Material
- Barsoy, Briggs, Florida 103, and Larkere1
- Treatment
- sludge‐treatede1
- Outcome
- metal uptakese1
- Direction
- not significantly differente1
- Comparator
- non‐sludge‐treated (control) soilse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“four cultivars of barley ( Hordeum vulgare L.)”
e1“metal uptakes by four cultivars of barley (Barsoy, Briggs, Florida 103, and Larker) were not significantly different when they were grown on both sludge‐treated and non‐sludge‐treated (control) soils”
Claim · model-written summary
Sludge application and soil type significantly influenced Cd and Zn concentrations in plant tissue.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- sludge applicatione2
- Outcome
- Cd and Zn concentrations of the plant tissuee2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“four cultivars of barley ( Hordeum vulgare L.)”
e2“The Cd and Zn concentrations of the plant tissue from sludge‐treated soils, however, were significantly influenced by the sludge application and the soil type”
Claim · model-written summary
Grain Cd content increased from below 0.04 at control to 0.38 µ g/g at the 100 t/ha sludge treatment on Ramona sandy loam.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- 100‐t/ha sludge treatmente3
- Outcome
- Cd content of graine3
- Direction
- increasede3
- Value
- 0.38 (0.19–0.53) µ g/ge3
- Comparator
- controle3
- Setting
- Ramona sandy loam soile3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“four cultivars of barley ( Hordeum vulgare L.)”
e3“For four cultivars of barley grown on the Ramona sandy loam soil, the Cd content of grain averaged < 0.04 (< 0.04–0.03) µ g/g at the control and increased to 0.38 (0.19–0.53) µ g/g at the 100‐t/ha sludge treatment”
Claim · model-written summary
Grain Zn concentration at 100 t/ha sludge was 92 µ g/g, higher than control.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- 100‐t/hae4
- Outcome
- Zn concentrations of barley graine4
- Direction
- higherinferrede4
- Value
- 92 µ g/ge4
- Comparator
- controle4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“four cultivars of barley ( Hordeum vulgare L.)”
e4“the average Zn concentrations of barley grain were 41, 67, and 92 µ g/g for the control, 20‐t/ha, and 100‐t/ha treatments, respectively”
Claim · model-written summary
Grain Zn concentration at 20 t/ha sludge was 67 µ g/g, higher than control.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- 20‐t/hae4
- Outcome
- Zn concentrations of barley graine4
- Direction
- higherinferrede4
- Value
- 67e4
- Comparator
- controle4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“four cultivars of barley ( Hordeum vulgare L.)”
e4“the average Zn concentrations of barley grain were 41, 67, and 92 µ g/g for the control, 20‐t/ha, and 100‐t/ha treatments, respectively”
Claim · model-written summary
Barley grown on the Domino loam soil accumulated the least Cd and Zn.
- Taxon
- barleyHordeum vulgaree0
- Outcome
- amounts of Cd and Zne6
- Direction
- leaste6
- Setting
- Domino loam soile6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“four cultivars of barley ( Hordeum vulgare L.)”
e6“Crops grown on the Domino loam soil (fine, mixed, thermic Xerollic Calciorthid) accumulated the least amounts of Cd and Zn”
Claim · model-written summary
Heavy sludge applications gave higher plant-tissue Cd and Zn in barley on coarser-textured soils.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- heavy sludge applicationse5
- Outcome
- plant‐tissue Cd and Zne5
- Direction
- higher levelse5
- Setting
- soils of coarser texturee5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“four cultivars of barley ( Hordeum vulgare L.)”
e5“At heavy sludge applications, higher levels of plant‐tissue Cd and Zn were often found in barley grown on soils of coarser texture”
Claim · model-written summary
Soil texture and pH influenced Cd and Zn contents of barley.
- Taxon
- barleyHordeum vulgaree0
- Treatment
- soil texture and pHe1
- Outcome
- Cd and Zn contentse1
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“four cultivars of barley ( Hordeum vulgare L.)”
e1“Both soil texture and pH influenced Cd and Zn contents of barley”
The same questions in other papers
organic · nutrient: content · Hordeum vulgare (barley)Positive and negative results
4 papers in the same direction as this paper · 13 in the opposite direction
- positive
- positive
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See all 18 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.