Abstract
Abstract Anaerobic digestion of biomass produces biogas for combustion and also provides a residual digestate. Although sometimes regarded as a waste product, the nutrient‐rich chemical composition of digestate makes it a potential organic fertilizer for agriculture. The goal of this study was to evaluate the effectiveness of digestate as a fertilizer on the biomass yield and chemical composition of cocksfoot ( Dactylis glomerata L.). In a 5‐year small‐plot field experiment digestate fertilization treatments supplying 90, 180, 270, 360 and 450 kg N ha −1 were compared with untreated plots and plots fertilized with 180 kg N ha −1 of mineral N fertilizer. Swards fertilized with digestate produced higher biomass yield compared with the control. The same rate of nitrogen fertilizer (180 kg N ha −1 ) supplied as digestate and from mineral fertilizers gave similar results on biomass yield. Herbage in swards fertilized with digestate contained less nitrogen, but the C:N ratio was much more suitable for biogas production. Digestate fertilization resulted in higher concentrations of cellulose and hemicellulose in biomass and lower contents of the inhibitors of anaerobic digestion—sulphur, calcium, magnesium and phosphorus—compared with those of swards receiving mineral fertilizers.
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Claims 7
Claim · model-written summary
Digestate-fertilized swards produced higher biomass yield than the control
- Taxon
- Dactylis glomerata
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Dactylis glomeratat0 - Treatment
- digestatee2
- Outcome
- biomass yielde2
- Direction
- highere2
- Comparator
- the controle2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
t0“biomass production and quality of cocksfoot (Dactylis glomerata L.)”
e2“Swards fertilized with digestate produced higher biomass yield compared with the control”
Claim · model-written summary
Digestate and mineral nitrogen at the same rate gave similar biomass yield
- Taxon
- Dactylis glomerataDactylis glomeratat0
- Treatment
- supplied as digestatee3
- Outcome
- biomass yielde3
- Direction
- no_changeinferrede3
- Comparator
- from mineral fertilizerse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“biomass production and quality of cocksfoot (Dactylis glomerata L.)”
e3“supplied as digestate and from mineral fertilizers gave similar results on biomass yield”
Claim · model-written summary
Herbage from digestate-fertilized swards contained less nitrogen
- Taxon
- Dactylis glomerataDactylis glomeratat0
- Organ / stage
- Herbagee4
- Treatment
- digestatee4
- Outcome
- nitrogene4
- Direction
- lesse4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“biomass production and quality of cocksfoot (Dactylis glomerata L.)”
e4“Herbage in swards fertilized with digestate contained less nitrogen, but the C:N ratio was much more suitable for biogas production”
Claim · model-written summary
Digestate fertilization gave a C:N ratio much more suitable for biogas production
- Taxon
- Dactylis glomerataDactylis glomeratat0
- Treatment
- digestatee4
- Outcome
- C:N ratioe4
- Direction
- much more suitablee4
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“biomass production and quality of cocksfoot (Dactylis glomerata L.)”
e4“Herbage in swards fertilized with digestate contained less nitrogen, but the C:N ratio was much more suitable for biogas production”
Claim · model-written summary
Digestate fertilization increased cellulose and hemicellulose concentrations in biomass
- Taxon
- Dactylis glomerataDactylis glomeratat0
- Treatment
- Digestate fertilizatione5
- Outcome
- concentrations of cellulose and hemicellulosee5
- Direction
- highere5
- Comparator
- mineral fertilizerse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“biomass production and quality of cocksfoot (Dactylis glomerata L.)”
e5“Digestate fertilization resulted in higher concentrations of cellulose and hemicellulose in biomass and lower contents of the inhibitors of anaerobic digestion—sulphur, calcium, magnesium and phosphorus—compared with those of swards receiving mineral fertilizers”
Claim · model-written summary
Digestate fertilization lowered sulphur, calcium and magnesium contents
- Taxon
- Dactylis glomerataDactylis glomeratat0
- Treatment
- Digestate fertilizatione5
- Outcome
- sulphur, calcium, magnesiume5
- Direction
- lowere5
- Comparator
- mineral fertilizerse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“biomass production and quality of cocksfoot (Dactylis glomerata L.)”
e5“Digestate fertilization resulted in higher concentrations of cellulose and hemicellulose in biomass and lower contents of the inhibitors of anaerobic digestion—sulphur, calcium, magnesium and phosphorus—compared with those of swards receiving mineral fertilizers”
Claim · model-written summary
Digestate fertilization lowered phosphorus content
- Taxon
- Dactylis glomerataDactylis glomeratat0
- Treatment
- Digestate fertilizatione5
- Outcome
- phosphoruse5
- Direction
- lowere5
- Comparator
- mineral fertilizerse5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“biomass production and quality of cocksfoot (Dactylis glomerata L.)”
e5“Digestate fertilization resulted in higher concentrations of cellulose and hemicellulose in biomass and lower contents of the inhibitors of anaerobic digestion—sulphur, calcium, magnesium and phosphorus—compared with those of swards receiving mineral fertilizers”
The same questions in other papers
fertilization · nutrient: content · Dactylis glomerata (cocksfoot)Positive and negative results
9 papers in the same direction as this paper · 2 in the opposite direction
- positive
- negative
- no effect
8 papers more in this group
See all 12 papers →fertilization · yield · Dactylis glomerata (cocksfoot)Results agree
24 papers in the same direction as this paper
- positive
- positive
- positive
21 papers more in this group
See all 25 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.