Abstract
Abstract Recent research has indicated that land application of municipal sewage sludge to calcareous soils can be used to ameliorate iron (Fe) deficiency of grain sorghum [Sorghum bicolor (L.) Monech]. A greenhouse study was conducted to determine the response of grain sorghum grown on three different soils to application of sewage sludge. Sludge applied at rates of 0, 7.5, 15.0, and 25.0 g/kg soil did not completely ameliorate grain sorghum Fe deficiency. When FeEDDHA was soil applied, sewage sludge application significantly increased plant growth due to increases in soil phosphorus (P) availability. Application of sewage sludge at rates greater than 7.5 g/kg reduced dry matter production of grain sorghum in the FeEDDHA amended Orelia SC soil, the soil with the lowest total neutralizing potential. The decreases yield was possibly due to toxic levels of soil and plant copper (Cu) and zinc (Zn), and increased soil salinity.
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Claims 4
Claim · model-written summary
Sewage sludge did not completely ameliorate iron deficiency in grain sorghum.
- Taxon
- grain sorghum
Sorghum bicolore0 - Treatment
- Sludge applied at rates of 0, 7.5, 15.0, and 25.0 g/kg soile0
- Outcome
- grain sorghum Fe deficiencye0
- Direction
- did not completely amelioratee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sludge applied at rates of 0, 7.5, 15.0, and 25.0 g/kg soil did not completely ameliorate grain sorghum Fe deficiency.”
t0“Effect of sewage sludge application to amelio‐rate iron deficiency of grain sorghum”
Claim · model-written summary
With soil-applied FeEDDHA, sewage sludge significantly increased sorghum growth.
- Taxon
- grain sorghumSorghum bicolort0
- Treatment
- sewage sludge applicatione0
- Outcome
- plant growthe0
- Direction
- increasede0
- Qualifier
- When FeEDDHA was soil appliede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When FeEDDHA was soil applied, sewage sludge application significantly increased plant growth due to increases in soil phosphorus (P) availability.”
t0“Effect of sewage sludge application to amelio‐rate iron deficiency of grain sorghum”
Claim · model-written summary
Sludge increased soil phosphorus availability when FeEDDHA was applied.
- Taxon
- grain sorghumSorghum bicolort0
- Treatment
- sewage sludge applicatione0
- Outcome
- soil phosphorus (P) availabilitye0
- Direction
- increasese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“When FeEDDHA was soil applied, sewage sludge application significantly increased plant growth due to increases in soil phosphorus (P) availability.”
t0“Effect of sewage sludge application to amelio‐rate iron deficiency of grain sorghum”
Claim · model-written summary
Sludge above 7.5 g/kg reduced sorghum dry matter production in FeEDDHA-amended Orelia SC soil.
- Taxon
- grain sorghumSorghum bicolore0
- Treatment
- sewage sludge at rates greater than 7.5 g/kge0
- Outcome
- dry matter productione0
- Direction
- reducede0
- Qualifier
- FeEDDHA amendede0
- Setting
- Orelia SC soile0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Application of sewage sludge at rates greater than 7.5 g/kg reduced dry matter production of grain sorghum in the FeEDDHA amended Orelia SC soil, the soil with the lowest total neutralizing potential.”
t0“Effect of sewage sludge application to amelio‐rate iron deficiency of grain sorghum”
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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.