Abstract
The demand for peat-free organic growing media has increased and green compost provide an attractive option within a circular economy. To take advantage of the inherent nutrient content, the nutrient dynamics need to be carefully considered when evaluating the agronomic potential of compost for organic production. In this study, the use of compost made from gorse (Ulex europaeus L.) was evaluated as a substrate for organic production of strawberries (Fragaria x ananassa Duch ‘Selva’), focusing particularly on the availability of nutrients. Two gorse composts were used, gorse composted with poultry manure (5% v/v) (PM100) and gorse composted on its own without manure (PM0). The composts were assessed in their original form and in formulations containing different proportions of each. A fertilised standard peat-based substrate was used as control. Both PM0 and PM100 exhibited acceptable physical properties and contained high concentrations of major nutrients (particularly PM100). The nutrient concentrations in the solutions from the different formulations decreased gradually during the growth of the crop, particularly N and K. Concentrations of N and chlorophyll levels were lower in plants grown in gorse compost formulations than in those grown in the control. There were, however, no substantial differences in fruit size or overall yield. The above-ground biomass in the compost-grown plants increased with increased proportions of PM100, but it was greater in the control plants. The gorse composts were recommended as effective peat substitutes for strawberry cultivation, although supplementary fertiliser should be applied at fruit production stage to ensure optimal production.
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Claims 9
Claim · model-written summary
Strawberries grown in gorse compost formulations had lower nitrogen concentration and chlorophyll levels than the peat control.
- Taxon
- strawberry
_single2.jpg?width=60)
Fragaria ×ananassat0 - Treatment
- gorse compost formulationse1
- Outcome
- Concentrations of N and chlorophyll levelse1
- Direction
- lowere1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_single2.jpg?width=500)
Verbatim
t0“organic strawberry production”
e1“Concentrations of N and chlorophyll levels were lower in plants grown in gorse compost formulations than in those grown in the control”
Claim · model-written summary
Fruit size and overall yield did not differ substantially between gorse compost formulations and the control.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- gorse compost formulationse1
- Outcome
- fruit size or overall yielde2
- Direction
- no substantial differencese2
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“organic strawberry production”
e2“There were, however, no substantial differences in fruit size or overall yield”
e1“Concentrations of N and chlorophyll levels were lower in plants grown in gorse compost formulations than in those grown in the control”
Claim · model-written summary
Above-ground biomass of compost-grown plants increased with higher proportions of PM100.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- increased proportions of PM100e3
- Outcome
- above-ground biomasse3
- Direction
- increasede3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“organic strawberry production”
e3“The above-ground biomass in the compost-grown plants increased with increased proportions of PM100, but it was greater in the control plants”
Claim · model-written summary
Above-ground biomass was greater in control plants than in compost-grown plants.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- compost-growne3
- Outcome
- above-ground biomasse3
- Direction
- greatere3
- Comparator
- control plantse3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“organic strawberry production”
e3“The above-ground biomass in the compost-grown plants increased with increased proportions of PM100, but it was greater in the control plants”
Claim · model-written summary
Both PM0 and PM100 composts had acceptable physical properties.
Not reportedTaxon
Verbatim
e4“Both PM0 and PM100 exhibited acceptable physical properties and contained high concentrations of major nutrients (particularly PM100)”
Claim · model-written summary
Both PM0 and PM100 composts contained high concentrations of major nutrients, particularly PM100.
Not reportedTaxon
Verbatim
e4“Both PM0 and PM100 exhibited acceptable physical properties and contained high concentrations of major nutrients (particularly PM100)”
Claim · model-written summary
Nutrient concentrations in the solutions decreased gradually during crop growth, particularly N and K.
- Outcome
- nutrient concentrations in the solutionse5
- Direction
- decreasede5
- Qualifier
- particularly N and Ke5
Not reportedTaxon
Verbatim
e5“The nutrient concentrations in the solutions from the different formulations decreased gradually during the growth of the crop, particularly N and K”
Claim · model-written summary
Gorse composts are recommended as effective peat substitutes for strawberry cultivation.
- Taxon
- strawberryFragaria ×ananassae6
- Outcome
- effective peat substitutes for strawberry cultivatione6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“The gorse composts were recommended as effective peat substitutes for strawberry cultivation”
Claim · model-written summary
Supplementary fertiliser should be applied at the fruit production stage of strawberry.
- Taxon
- strawberryFragaria ×ananassae6
- Organ / stage
- fruit production stagee7
- Outcome
- supplementary fertiliser should be appliede7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“The gorse composts were recommended as effective peat substitutes for strawberry cultivation”
e7“supplementary fertiliser should be applied at fruit production stage”
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