Abstract
Two forms of biosolids, with and without lime, were applied to acid soils at 2 sites in central New South Wales. Wheat and triticale were then grown on these sites to determine the effect of biosolids on crop growth and yield. The forms of biosolids used were dewatered sewage sludge cake, and N-Viro Soil which is a lime amended sewage sludge. Dewatered sewage sludge cake was applied at rates of 0, 6, 12 and 24 dry Mg/ha, and N-Viro soil at 0, 1.5, 3.0 and 4.5 dry Mg/ha. Biosolids produced grain yield increases of over 50% at both sites, with the largest yield increases at the highest rate of dewatered sewage sludge. Continued cropping at 1 of the sites showed that significant yield increases were still obtained 3 years after the initial application. The addition of lime and N-Viro Soil raised soil pH, and produced small but long lasting yield increases. However, the main benefit of biosolids seems to have come from the nutrients they supplied rather than changes in soil pH.
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Claims 6
Claim · model-written summary
Biosolids increased grain yield by over 50% at both sites.
- Taxon
- Wheat and triticale
Triticum aestivum
×Triticosecalee2 - Treatment
- Biosolidse0
- Outcome
- grain yielde0
- Direction
- increasese0
- Value
- over 50%e0
- Setting
- both sitese0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Biosolids produced grain yield increases of over 50% at both sites”
e2“Wheat and triticale were then grown on these sites”
Claim · model-written summary
The highest rate of dewatered sewage sludge gave the largest grain yield increase.
- Taxon
- Wheat and triticaleTriticum aestivum×Triticosecalee2
- Treatment
- highest rate of dewatered sewage sludgee0
- Outcome
- yielde0
- Direction
- largeste0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with the largest yield increases at the highest rate of dewatered sewage sludge”
e2“Wheat and triticale were then grown on these sites”
Claim · model-written summary
Yield increases persisted three years after application at one site.
- Taxon
- Wheat and triticaleTriticum aestivum×Triticosecalee2
- Outcome
- yielde0
- Direction
- increasese0
- Value
- 3 yearse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significant yield increases were still obtained 3 years after the initial application”
e2“Wheat and triticale were then grown on these sites”
Claim · model-written summary
Lime and N-Viro Soil raised soil pH.
- Taxon
- Wheat and triticaleTriticum aestivum×Triticosecalee2
- Treatment
- lime and N-Viro Soile0
- Outcome
- soil pHe0
- Direction
- raisede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The addition of lime and N-Viro Soil raised soil pH”
e2“Wheat and triticale were then grown on these sites”
Claim · model-written summary
Lime and N-Viro Soil produced small, lasting yield increases.
- Taxon
- Wheat and triticaleTriticum aestivum×Triticosecalee2
- Treatment
- lime and N-Viro Soile0
- Outcome
- yielde0
- Direction
- increasese0
- Qualifier
- small but long lastinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The addition of lime and N-Viro Soil raised soil pH, and produced small but long lasting yield increases”
e2“Wheat and triticale were then grown on these sites”
Claim · model-written summary
The authors attributed the main biosolids benefit to supplied nutrients.
- Taxon
- Wheat and triticaleTriticum aestivum×Triticosecalee2
- Treatment
- biosolidse0
- Outcome
- main benefite0
- Qualifier
- nutrients they supplied rather than changes in soil pHe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the main benefit of biosolids seems to have come from the nutrients they supplied rather than changes in soil pH”
e2“Wheat and triticale were then grown on these sites”
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