Abstract
This two-year study investigated combinations of biopesticides to determine impacts on strawberry fruit marketable fruit yields, and effectiveness in controlling strawberry pests in a high tunnel production system at the University of Arkansas, Division of Agriculture Research and Extension Center in Fayetteville, Arkansas. Two strawberry cultivars Fragaria × ananassa (Duch.), Camino Real and Sweet Sensation were grown in a high tunnel from early-October to mid-May for two consecutive growing seasons, (2017-18 and 2018-19) with six treatment combinations of biopesticides including an untreated (water) control, nutrient spray and selected biological based fungicides and insecticides, arranged into a split-plot randomized block design. The cost associated with each biopesticide treatment combination was calculated based on the number of times applied to the specific area of the study and the cost of the products. Relative humidity, daily light integral (DLI) and growing degree days (GDD) were also recorded to show differences between the two growing seasons. During the 2018 season, the control (water) treatment numerically had the highest total and marketable fruit weight, but was not significantly different from any biopesticide treatment. No significant effects of biopesticide treatment were observed during the 2019 season on fruit yield or quality, thus indicating that there was no clear advantage to any of the treatments on improving fruit marketability. The biopesticide combination treatments were also evaluated for their impacts of four high tunnel pests of strawberry, powdery mildew (Podosphaera aphanis (Wallr.) U. Braun and S. Takam. (formerly Sphaerotheca macularis (Wall. Ex Fries) Jacz f. sp. Fragariae (Peries))), gray mold (Botrytis cinerea), two-spotted spider mites (Tetranychus urticae (Koch) (Acari: Tetranychidae)), and strawberry aphids (Chaetosiphon fragaefolii (Cockerell) (Homoptera: Aphididae)). Disease incidence for 2018 was less than 16% for powdery mildew and less than 25% for gray mold. Powdery mildew in 2019 had less than 1% of disease incidence and gray mold had less than 2% disease incidence. In 2018, two-spotted spider mite populations were greater than the economic threshold of 5 mites per leaflet, but populations remained below the economic threshold in 2019. Strawberry aphid populations were not present in either harvest season. Overall findings point to the evaluated combinations of biopesticides not having a significant effect on fruit marketability or disease/arthropod control. These findings indicate that the tested combinations should not be used by producers to control pests or improve marketable yield of strawberries in high tunnels.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by-nd. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 10
Claim · model-written summary
In 2018, the untreated water control numerically had the highest total and marketable fruit weight but did not differ significantly from any biopesticide treatment.
- Taxon
- strawberry
_single2.jpg?width=60)
Fragaria ×ananassae0 - Treatment
- biopesticide treatmente1
- Outcome
- total and marketable fruit weighte1
- Direction
- higheste1
- Qualifier
- not significantly different from any biopesticide treatmente1
- Comparator
- control (water)e1
- Setting
- 2018 seasone1
Not reportedValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_single2.jpg?width=500)
Verbatim
e0“impacts on strawberry fruit marketable fruit yields”
e1“During the 2018 season, the control (water) treatment numerically had the highest total and marketable fruit weight, but was not significantly different from any biopesticide treatment”
Claim · model-written summary
In 2019, biopesticide treatment had no significant effect on strawberry fruit yield or quality compared with the untreated control.
- Taxon
- strawberryFragaria ×ananassae0
- Treatment
- biopesticide treatmente2
- Outcome
- fruit yield or qualitye2
- Direction
- no_changeinferrede2
- Comparator
- untreated (water) controle3
- Setting
- 2019 seasone2
Not reportedValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“impacts on strawberry fruit marketable fruit yields”
e2“No significant effects of biopesticide treatment were observed during the 2019 season on fruit yield or quality”
e3“six treatment combinations of biopesticides including an untreated (water) control”
Claim · model-written summary
Powdery mildew incidence on strawberry was below 16% in 2018.
- Taxon
- strawberryFragaria ×ananassae0
- Interactor
- powdery mildewe4pathogen
- Outcome
- Disease incidencee4
- Value
- less than 16%e4
- Setting
- 2018e4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“impacts on strawberry fruit marketable fruit yields”
e4“Disease incidence for 2018 was less than 16% for powdery mildew and less than 25% for gray mold”
Claim · model-written summary
Gray mold incidence on strawberry was below 25% in 2018.
- Taxon
- strawberryFragaria ×ananassae0
- Interactor
- Botrytis cinerea
Botrytis cinereae5pathogen - Outcome
- Disease incidencee4
- Value
- less than 25%e4
- Setting
- 2018e4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“impacts on strawberry fruit marketable fruit yields”
e4“Disease incidence for 2018 was less than 16% for powdery mildew and less than 25% for gray mold”
e5“gray mold (Botrytis cinerea)”
Claim · model-written summary
Powdery mildew incidence on strawberry was below 1% in 2019.
- Taxon
- strawberryFragaria ×ananassae0
- Interactor
- powdery mildewe6pathogen
- Outcome
- disease incidencee6
- Value
- less than 1%e6
- Setting
- 2019e6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“impacts on strawberry fruit marketable fruit yields”
e6“Powdery mildew in 2019 had less than 1% of disease incidence”
Claim · model-written summary
Gray mold incidence on strawberry was below 2% in 2019.
- Taxon
- strawberryFragaria ×ananassae0
- Interactor
- Botrytis cinereaBotrytis cinereae5pathogen
- Outcome
- disease incidencee7
- Value
- less than 2%e7
- Setting
- 2019e6
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“impacts on strawberry fruit marketable fruit yields”
e5“gray mold (Botrytis cinerea)”
e6“Powdery mildew in 2019 had less than 1% of disease incidence”
e7“gray mold had less than 2% disease incidence”
Claim · model-written summary
In 2018, two-spotted spider mite populations on strawberry were greater than the economic threshold of 5 mites per leaflet.
- Taxon
- strawberryFragaria ×ananassae0
- Interactor
- Tetranychus urticae
.jpg?width=60)
Tetranychus urticaee1pest - Outcome
- two-spotted spider mite populationse2
- Value
- 5 mites per leaflete2
- Qualifier
- greater than the economic thresholde2
- Setting
- 2018e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
.jpg?width=500)
Verbatim
e0“impacts on strawberry fruit marketable fruit yields”
e1“two-spotted spider mites (Tetranychus urticae (Koch) (Acari: Tetranychidae))”
e2“In 2018, two-spotted spider mite populations were greater than the economic threshold of 5 mites per leaflet, but populations remained below the economic threshold in 2019”
Claim · model-written summary
In 2019, two-spotted spider mite populations on strawberry remained below the economic threshold.
- Taxon
- strawberryFragaria ×ananassae0
- Interactor
- Tetranychus urticaeTetranychus urticaee1pest
- Outcome
- populationse2
- Qualifier
- below the economic thresholde2
- Setting
- 2019e2
Not reportedValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“impacts on strawberry fruit marketable fruit yields”
e1“two-spotted spider mites (Tetranychus urticae (Koch) (Acari: Tetranychidae))”
e2“In 2018, two-spotted spider mite populations were greater than the economic threshold of 5 mites per leaflet, but populations remained below the economic threshold in 2019”
Claim · model-written summary
Strawberry aphid populations were not present in either harvest season.
- Taxon
- strawberryFragaria ×ananassae0
- Interactor
- Chaetosiphon fragaefoliiChaetosiphon fragaefoliie1pest
- Outcome
- aphid populationse2
- Qualifier
- not present in either harvest seasone2
Not reportedValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“impacts on strawberry fruit marketable fruit yields”
e1“strawberry aphids (Chaetosiphon fragaefolii (Cockerell) (Homoptera: Aphididae))”
e2“Strawberry aphid populations were not present in either harvest season”
Claim · model-written summary
The tested biopesticide combinations should not be used by producers to control pests or improve marketable yield of strawberries in high tunnels.
- Taxon
- strawberriesFragaria ×ananassae1
- Outcome
- should not be used by producers to control pests or improve marketable yielde1
- Setting
- high tunnelse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“impacts on strawberry fruit marketable fruit yields”
e1“the tested combinations should not be used by producers to control pests or improve marketable yield of strawberries in high tunnels”
The same questions in other papers
biocontrol · quality: postharvest · Fragaria x ananassa (strawberry)Positive and negative results
2 in the opposite direction
- positive
- positive
biocontrol · quality: general · Fragaria x ananassa (strawberry)Results agree
1 paper in the same direction as this paper
- no effect
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.