Abstract
Abstract The interaction of gamma‐irradiated sewage sludge, nitrogen and phosphorus fertilizers on dry matter production, phosphorus concentration and phosphorus uptake of sorghum was examined. Three crops of sorghum were grown in the greenhouse in 19 1 plastic buckets. The phosphorus and sludge treatments were applied at the initiation of the experiment only. Nitrogen was applied to the corresponding nitrogen treatment pots before each of the three croppings. There was a significant nitrogen x sewage interaction for dry matter production, phosphorus concentration and phosphorus uptake in each harvest. There was a significant phosphorus sewage sludge interaction in the first harvest for phosphorus uptake. All other possible interactions were not statistically significant. The 67 metric ton/ha sludge rate produced nearly the same yield as the nitrogen treatment. In the first harvest, sludge significantly increased plant phosphorus uptake from the fertilizer phosphorus. The phosphorus uptake in sorghum from 472 and 944 kg P/ha from the sludge treatments was comparable to that from 1299 and 2598 kg P/ha from triple superphosphate.
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Claims 5
Claim · model-written summary
In each harvest, nitrogen and sewage sludge interacted significantly for sorghum dry matter production, phosphorus concentration and phosphorus uptake.
- Treatment
- nitrogen x sewagee1
- Outcome
- dry matter production, phosphorus concentration and phosphorus uptakee1
- Qualifier
- in each harveste1
- Setting
- greenhousee2
SorghumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“There was a significant nitrogen x sewage interaction for dry matter production, phosphorus concentration and phosphorus uptake in each harvest”
e2“Three crops of sorghum were grown in the greenhouse in 19 1 plastic buckets”
Claim · model-written summary
In the first harvest, phosphorus and sewage sludge interacted significantly for sorghum phosphorus uptake.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“There was a significant phosphorus sewage sludge interaction in the first harvest for phosphorus uptake”
e2“Three crops of sorghum were grown in the greenhouse in 19 1 plastic buckets”
Claim · model-written summary
A 67 metric ton/ha sludge rate produced nearly the same sorghum yield as the nitrogen treatment.
- Treatment
- 67 metric ton/ha sludge ratee1
- Outcome
- yielde1
- Direction
- nearly the samee1
- Comparator
- nitrogen treatmente1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The 67 metric ton/ha sludge rate produced nearly the same yield as the nitrogen treatment”
e2“Three crops of sorghum were grown in the greenhouse in 19 1 plastic buckets”
Claim · model-written summary
In the first harvest, sewage sludge significantly increased sorghum phosphorus uptake from the fertilizer phosphorus.
- Treatment
- sludgee1
- Outcome
- plant phosphorus uptake from the fertilizer phosphoruse1
- Direction
- significantly increasede1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“In the first harvest, sludge significantly increased plant phosphorus uptake from the fertilizer phosphorus”
e2“Three crops of sorghum were grown in the greenhouse in 19 1 plastic buckets”
Claim · model-written summary
Phosphorus uptake in sorghum from 472 and 944 kg P/ha of sludge treatments was comparable to that from 1299 and 2598 kg P/ha of triple superphosphate.
- Treatment
- sludge treatmentse1
- Outcome
- phosphorus uptakee1
- Direction
- comparablee1
- Value
- 472 and 944 kg P/hae1
- Comparator
- triple superphosphatee1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“The phosphorus uptake in sorghum from 472 and 944 kg P/ha from the sludge treatments was comparable to that from 1299 and 2598 kg P/ha from triple superphosphate”
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See all 14 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.