Abstract
Floating rowcovers composed of extruded polypropylene, spunbonded polypropylene, and polyester were used in 1987-88 in eastern North Carolina for cold protection of strawberries (Fragaria × ananassa Duch.) growing in annual hill culture on black plastic mulch. Treatments consisted of floating rowcovers in either winter, spring, or both with and without overhead irrigation for spring frost/freeze protection, in addition to irrigated and nonirrigated unprotected plots. Winter rowcovers increased air temperatures by 1 to 2C without advancing bloom or harvest date. Significant blossom temperature differences relative to rowcover materials (≈ 1.5C) and irrigation use (≈ 1.5 to 3.0C) were detected over the course of six spring frosts. Time of application of covers (winter or spring) and irrigation in spring interacted in their effects on early yields (25 Apr.-5 May). However, rowcover and irrigation treatments did not have a significant effect on total marketable yield, yield per plant, or berry mass. In the absence of higher prices for early than late-season fruit or of more severe environmental extremes than experienced in the current study, it would be difficult to justify the added expense of rowcovers.
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Claims 7
Claim · model-written summary
Winter rowcovers raised air temperatures by 1 to 2C.
- Taxon
- strawberries
_single2.jpg?width=60)
Fragaria ×ananassae1 - Treatment
- Winter rowcoverse0
- Outcome
- air temperaturese0
- Direction
- increasede0
- Value
- 1 to 2Ce0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_single2.jpg?width=500)
Verbatim
e0“Winter rowcovers increased air temperatures by 1 to 2C without advancing bloom or harvest date”
e1“strawberries (Fragaria × ananassa Duch.)”
Claim · model-written summary
Winter rowcovers did not advance bloom or harvest date.
- Taxon
- strawberriesFragaria ×ananassae1
- Treatment
- Winter rowcoverse0
- Outcome
- bloom or harvest datee0
- Direction
- without advancinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Winter rowcovers increased air temperatures by 1 to 2C without advancing bloom or harvest date”
e1“strawberries (Fragaria × ananassa Duch.)”
Claim · model-written summary
Blossom temperatures differed significantly among rowcover materials.
- Taxon
- strawberriesFragaria ×ananassae1
- Treatment
- rowcover materialse0
- Outcome
- blossom temperature differencese0
- Value
- ≈ 1.5Ce0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Significant blossom temperature differences relative to rowcover materials (≈ 1.5C)”
e1“strawberries (Fragaria × ananassa Duch.)”
Claim · model-written summary
Blossom temperatures differed significantly with irrigation use.
- Taxon
- strawberriesFragaria ×ananassae1
- Treatment
- irrigation usee0
- Outcome
- blossom temperature differencese2
- Value
- ≈ 1.5 to 3.0Ce0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“irrigation use (≈ 1.5 to 3.0C) were detected over the course of six spring frosts”
e1“strawberries (Fragaria × ananassa Duch.)”
e2“Significant blossom temperature differences”
Claim · model-written summary
Cover application time and spring irrigation interacted in effects on early yields.
- Taxon
- strawberriesFragaria ×ananassae1
- Treatment
- Time of application of covers (winter or spring) and irrigation in springe0
- Outcome
- early yieldse0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Time of application of covers (winter or spring) and irrigation in spring interacted in their effects on early yields (25 Apr.-5 May)”
e1“strawberries (Fragaria × ananassa Duch.)”
Claim · model-written summary
Rowcover and irrigation treatments had no significant effect on total marketable yield, yield per plant, or berry mass.
- Taxon
- strawberriesFragaria ×ananassae1
- Treatment
- rowcover and irrigation treatmentse0
- Outcome
- total marketable yield, yield per plant, or berry masse0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“rowcover and irrigation treatments did not have a significant effect on total marketable yield, yield per plant, or berry mass”
e1“strawberries (Fragaria × ananassa Duch.)”
Claim · model-written summary
The added expense of rowcovers would be difficult to justify without higher early-fruit prices or more severe extremes.
- Taxon
- strawberriesFragaria ×ananassae1
- Outcome
- difficult to justify the added expense of rowcoverse0
- Qualifier
- In the absence of higher prices for early than late-season fruit or of more severe environmental extremese0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the absence of higher prices for early than late-season fruit or of more severe environmental extremes than experienced in the current study, it would be difficult to justify the added expense of rowcovers”
e1“strawberries (Fragaria × ananassa Duch.)”
The same questions in other papers
irrigation · quality: postharvest · Fragaria x ananassa (strawberry)Positive and negative results
1 paper in the same direction as this paper · 6 in the opposite direction
- positive
- positive
- positive
4 papers more in this group
See all 8 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.