Abstract
In protected strawberry (Fragaria × ananassa Duch.) cultivation, CO2 enrichment is essential to enhance both fruit quality and yield. Fuel burning generators are commonly used to supply CO2 to entire commercial greenhouse space. However, methods that are less fuel-based are desired for contemporary agricultural practices. A new crop-local CO2 enrichment system using a modified fuel-burning generator has been developed to increase yields and decrease the fuel required for CO2 enrichment in greenhouse strawberry production. This crop-local CO2 enrichment (CLC) method directly supplies CO2 from perforated tubes set in the interrow space of the plant canopy. The effects of this technique on fruit quality, fruit yield, and fuel use efficiency have been examined in comparison with conventional CO2 enrichment (CC) practices. The CLC method increased CO2 concentration inside the plant canopy by 100–200 μmol mol–1 when compared with CC under the ventilating conditions by a roof window. This resulted in significant increases of approximately 10–26% in the average fruit weight, 13% in the cumulative fruit number, and 22% in cumulative marketable yield when compared to CC. Furthermore, cumulative fuel consumption was approximately 27% lower with the CLC method when compared to CC. These results indicate that CLC improves fuel use efficiency when compared with CC as it increased yields and decreased fuel consumption.
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Claims 5
Claim · model-written summary
Crop-local enrichment raised canopy CO2 concentration by 100–200 μmol mol–1 versus conventional enrichment during roof-window ventilation.
- Taxon
- strawberry
_single2.jpg?width=60)
Fragaria ×ananassat0 - Treatment
- CLC methode0
- Outcome
- CO2 concentration inside the plant canopye0
- Direction
- increasede0
- Value
- 100–200 μmol mol–1e0
- Qualifier
- under the ventilating conditions by a roof windowe0
- Comparator
- CCe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_single2.jpg?width=500)
Verbatim
e0“The CLC method increased CO2 concentration inside the plant canopy by 100–200 μmol mol–1 when compared with CC under the ventilating conditions by a roof window.”
t0“strawberry”
Claim · model-written summary
Crop-local enrichment significantly increased average strawberry fruit weight by approximately 10–26% versus conventional enrichment.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- CLCe1
- Outcome
- average fruit weighte0
- Direction
- increasese0
- Value
- 10–26%e0
- Comparator
- CCe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significant increases of approximately 10–26% in the average fruit weight, 13% in the cumulative fruit number, and 22% in cumulative marketable yield when compared to CC.”
t0“Crop-local CO2 enrichment improves strawberry yield”
e1“This crop-local CO2 enrichment (CLC) method directly supplies CO2 from perforated tubes set in the interrow space of the plant canopy.”
Claim · model-written summary
Crop-local enrichment significantly increased cumulative fruit number by 13% versus conventional enrichment.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- CLCe1
- Outcome
- cumulative fruit numbere0
- Direction
- increasese0
- Value
- 13%e0
- Comparator
- CCe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significant increases of approximately 10–26% in the average fruit weight, 13% in the cumulative fruit number, and 22% in cumulative marketable yield when compared to CC.”
t0“Crop-local CO2 enrichment improves strawberry yield”
e1“This crop-local CO2 enrichment (CLC) method directly supplies CO2 from perforated tubes set in the interrow space of the plant canopy.”
Claim · model-written summary
Crop-local enrichment significantly increased cumulative marketable yield by 22% versus conventional enrichment.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- CLCe1
- Outcome
- cumulative marketable yielde0
- Direction
- increasese0
- Value
- 22%e0
- Comparator
- CCe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“significant increases of approximately 10–26% in the average fruit weight, 13% in the cumulative fruit number, and 22% in cumulative marketable yield when compared to CC.”
t0“Crop-local CO2 enrichment improves strawberry yield”
e1“This crop-local CO2 enrichment (CLC) method directly supplies CO2 from perforated tubes set in the interrow space of the plant canopy.”
Claim · model-written summary
Crop-local enrichment used approximately 27% less cumulative fuel than conventional enrichment.
- Taxon
- strawberryFragaria ×ananassat0
- Treatment
- CLC methode0
- Outcome
- cumulative fuel consumptione0
- Direction
- lowere0
- Value
- 27%e0
- Comparator
- CCe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“cumulative fuel consumption was approximately 27% lower with the CLC method when compared to CC.”
t0“Crop-local CO2 enrichment improves strawberry yield”
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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.