Abstract
Abstract Municipal sewage sludge was added to a Truckton loamy sand at rates of 0, 25, 50, 100, and 125 metric tons/ha (dry weight basis) in the field to determine the effect on the growth and chemical composition of plants. Severe inhibition of germination of sorghum sudangrass ( Sorghum bicolor × S. sudanense ) cv. NB 280S, and millet ( Panicum miliacium L.) cv. Leonard, resulted when seeded shortly after the sludge was incorporated into the soil. Stand counts for wheat ( Triticum aestivum L. em. Thell [ aestivum gray] cv. Centurk) seeded about 3 months after sludge incorporation snowed no germination inhibition. Either the inhibitory factor was dissipated or the wheat was more tolerant than the other plants. The decrease in sorghum sudangrass yields with sludge addition was a result of poor germination rather than growth inhibition due to the sewage sludge. With one exception, yields on sludge‐treated wheat plots were greater or equal to the no‐sludge plots. Based on wheat yields, the optimum application rate of the sludge used in this study was between 25 and 50 metric tons/ha. sludge application except for lead and phosphorus. In no case, even at 125 metric tons/ha was the elemental content of the wheat grain outside normal ranges excepted in plant tissues.
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Claims 7
Claim · model-written summary
Sewage sludge severely inhibited sorghum sudangrass germination shortly after incorporation.
- Taxon
- sorghum sudangrasse0
- Material
- NB 280Se0
- Treatment
- sludgee0
- Outcome
- germinatione0
- Direction
- inhibitione0
Not reportedComparator
Verbatim
e0“Severe inhibition of germination of sorghum sudangrass ( Sorghum bicolor × S. sudanense ) cv. NB 280S, and millet ( Panicum miliacium L.) cv. Leonard, resulted when seeded shortly after the sludge was incorporated into the soil.”
Claim · model-written summary
Sewage sludge severely inhibited millet germination shortly after incorporation.
Not reportedComparator
Verbatim
e0“Severe inhibition of germination of sorghum sudangrass ( Sorghum bicolor × S. sudanense ) cv. NB 280S, and millet ( Panicum miliacium L.) cv. Leonard, resulted when seeded shortly after the sludge was incorporated into the soil.”
Claim · model-written summary
Wheat seeded three months after incorporation had no germination inhibition.
- Taxon
- wheat
Triticum aestivume0 - Material
- Centurke0
- Treatment
- sludge incorporatione0
- Outcome
- germinatione0
- Direction
- no germination inhibitione0
- Qualifier
- about 3 months after sludge incorporatione0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Stand counts for wheat ( Triticum aestivum L. em. Thell [ aestivum gray] cv. Centurk) seeded about 3 months after sludge incorporation snowed no germination inhibition.”
Claim · model-written summary
Reduced sorghum sudangrass yields with sludge reflected poor germination.
Verbatim
e0“The decrease in sorghum sudangrass yields with sludge addition was a result of poor germination rather than growth inhibition due to the sewage sludge.”
Claim · model-written summary
Wheat yields on sludge plots were at least as high as no-sludge plots except once.
- Taxon
- wheatTriticum aestivume0
- Treatment
- sludge‐treatede0
- Outcome
- yieldse0
- Direction
- greater or equale0
- Qualifier
- With one exceptione0
- Comparator
- no‐sludge plotse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With one exception, yields on sludge‐treated wheat plots were greater or equal to the no‐sludge plots.”
Claim · model-written summary
Wheat yield indicated an optimum sludge rate of 25 to 50 metric tons per hectare.
- Taxon
- wheatTriticum aestivume0
- Outcome
- optimum application rate of the sludgee0
- Value
- between 25 and 50 metric tons/hae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Based on wheat yields, the optimum application rate of the sludge used in this study was between 25 and 50 metric tons/ha.”
Claim · model-written summary
Wheat grain elemental content remained in normal ranges at up to 125 metric tons per hectare.
- Taxon
- wheatTriticum aestivume0
- Outcome
- elemental content of the wheat graine0
- Value
- 125 metric tons/hae0
- Qualifier
- normal rangese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In no case, even at 125 metric tons/ha was the elemental content of the wheat grain outside normal ranges excepted in plant tissues.”
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