Abstract
The strawberry bud weevil, Anthonomus signatus Say, is an important pest of strawberries in eastern North America. Typically, growers treat entire fields with insecticides on an annual basis when the number of clipped buds exceeds a threshold. The 3 objectives of this study were as follows: (1) to determine the distribution of weevil injury within strawberry fields, (2) to determine if managing only field borders would be effective, and (3) to determine if weevils preferentially oviposit in particular orders of flowers on an inflorescence. During a 3-yr monitoring period (1992–1994), A. signatus oviposition activity increased unidirectionally at a rate of ≈8 m or 10 rows (1.25 m centers) per year. In 7 grower fields in New York, only the 12-m perimeter of strawberry fields treated with insecticide reduced injury to a level similar to interior portions of the field. In the interior of these fields, insecticide treatments did not influence the level of weevil damage. Even when weevils damaged floral buds, only a small proportion (7%) were primary flowers that produce the largest fruit. On average, oviposition occurred disproportionally in secondary flower buds. These observations indicate that A. signatus can be managed effectively by treating the outside perimeter of fields rather than entire fields, planting cultivars that compensate the most for clipper injury on the perimeter, and suggest that thresholds could be raised because damage to large, primary buds is limited.
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Claims 8
Claim · model-written summary
A. signatus oviposition advanced approximately 8 m or 10 rows annually.
- Taxon
- strawberries
_single2.jpg?width=60)
Fragaria ×ananassat0 - Interactor
- A. signatus
.jpg?width=60)
Anthonomus signatuse0pest - Outcome
- A. signatus oviposition activitye0
- Direction
- increasede0
- Value
- ≈8 m or 10 rows (1.25 m centers) per yeare0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_single2.jpg?width=500)
.jpg?width=500)
Verbatim
e0“A. signatus oviposition activity increased unidirectionally at a rate of ≈8 m or 10 rows (1.25 m centers) per year.”
t0“pest of strawberries in eastern North America”
Claim · model-written summary
Treating only the 12-m field perimeter reduced injury to interior levels.
- Taxon
- strawberriesFragaria ×ananassat0
- Treatment
- 12-m perimeter of strawberry fields treated with insecticidee0
- Outcome
- injurye0
- Direction
- reducede0
- Comparator
- interior portions of the fielde0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“only the 12-m perimeter of strawberry fields treated with insecticide reduced injury to a level similar to interior portions of the field.”
t0“pest of strawberries in eastern North America”
Claim · model-written summary
Insecticide in field interiors did not influence weevil damage.
- Taxon
- strawberriesFragaria ×ananassat0
- Treatment
- insecticide treatmentse0
- Interactor
- weevile0pest
- Outcome
- weevil damagee0
- Direction
- did not influencee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In the interior of these fields, insecticide treatments did not influence the level of weevil damage.”
t0“pest of strawberries in eastern North America”
Claim · model-written summary
Only 7% of damaged floral buds were primary flowers.
- Taxon
- strawberriesFragaria ×ananassat0
- Organ / stage
- primary flowerse0
- Outcome
- primary flowerse0
- Value
- 7%e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“only a small proportion (7%) were primary flowers that produce the largest fruit.”
t0“pest of strawberries in eastern North America”
Claim · model-written summary
Oviposition occurred disproportionately in secondary flower buds.
- Taxon
- strawberriesFragaria ×ananassat0
- Organ / stage
- secondary flower budse0
- Outcome
- oviposition occurred disproportionallye0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“oviposition occurred disproportionally in secondary flower buds.”
t0“pest of strawberries in eastern North America”
Claim · model-written summary
The authors recommend treating field perimeters instead of whole fields.
- Taxon
- strawberriesFragaria ×ananassat0
- Outcome
- treating the outside perimeter of fields rather than entire fieldse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“managed effectively by treating the outside perimeter of fields rather than entire fields”
t0“pest of strawberries in eastern North America”
Claim · model-written summary
The authors recommend cultivars that compensate for perimeter clipper injury.
- Taxon
- strawberriesFragaria ×ananassat0
- Outcome
- planting cultivars that compensate the most for clipper injury on the perimetere0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“planting cultivars that compensate the most for clipper injury on the perimeter”
t0“pest of strawberries in eastern North America”
Claim · model-written summary
The authors suggest raising thresholds because primary bud damage is limited.
- Taxon
- strawberriesFragaria ×ananassat0
- Outcome
- thresholds could be raisede0
- Qualifier
- damage to large, primary buds is limitede0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“thresholds could be raised because damage to large, primary buds is limited”
t0“pest of strawberries in eastern North America”
The same questions in other papers
insecticide · crop injury · Fragaria x ananassa (strawberry)Positive and negative results
3 papers in the same direction as this paper · 1 in the opposite direction
- no effect
- positive
- positive
1 paper more in this group
See all 5 papers →insecticide · pest · Fragaria x ananassa (strawberry)Positive and negative results
1 paper in the same direction as this paper · 5 in the opposite direction
- positive
- positive
- positive
3 papers more in this group
See all 7 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.