Abstract
In an attempt to reduce valley wide populations of grackles in the Rio Grande Valley of South Texas, PA-14 was sprayed over a staging area where as many as 10,000 birds were located. This attempt was unsuccessful and this method of population reduction was deemed not suitable for south Texas. Dog food bait was treated with DRC-1339 and presented to great-tailed grackles in several different situations in an attempt to control depredations to citrus by this bird. Bait presented in feedlots during winter (Nov-Feb) was readily taken by the birds, resulting in a significant reduction of numbers of birds visiting these sites, but with little apparent effect on the valley-wide population or damage to citrus. Baiting at pre-and post-roost staging sites was not effective, even when supplemented with decoys. Baiting at nest colony sites early in the breeding season (Apr-May), and at water sources during the post-breeding period (Jul-Aug) were effective in reducing damage locally.
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Claims 6
Claim · model-written summary
PA-14 spraying at a grackle staging area did not reduce the population.
CitrusNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“PA-14 was sprayed over a staging area where as many as 10,000 birds were located. This attempt was unsuccessful”
e1“depredations to citrus by this bird”
Claim · model-written summary
Winter DRC-1339 bait in feedlots significantly reduced visiting grackle numbers.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Bait presented in feedlots during winter (Nov-Feb) was readily taken by the birds, resulting in a significant reduction of numbers of birds visiting these sites”
e1“depredations to citrus by this bird”
Claim · model-written summary
Winter bait had little apparent effect on valley-wide grackle population or citrus damage.
Not reportedInteractorTreatmentComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“but with little apparent effect on the valley-wide population or damage to citrus”
e1“depredations to citrus by this bird”
Claim · model-written summary
Baiting near roosts was ineffective even with decoys.
- Treatment
- Baiting at pre-and post-roost staging sitese0
- Outcome
- not effectivee0
- Direction
- not effectivee0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Baiting at pre-and post-roost staging sites was not effective, even when supplemented with decoys”
e1“depredations to citrus by this bird”
Claim · model-written summary
Baiting at nest colonies reduced local citrus damage.
- Treatment
- Baiting at nest colony sites early in the breeding season (Apr-May)e0
- Outcome
- damage locallye0
- Direction
- reducinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Baiting at nest colony sites early in the breeding season (Apr-May), and at water sources during the post-breeding period (Jul-Aug) were effective in reducing damage locally”
e1“depredations to citrus by this bird”
Claim · model-written summary
Baiting at water sources reduced local citrus damage.
- Treatment
- at water sources during the post-breeding period (Jul-Aug)e0
- Outcome
- damage locallye0
- Direction
- reducinge0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Baiting at nest colony sites early in the breeding season (Apr-May), and at water sources during the post-breeding period (Jul-Aug) were effective in reducing damage locally”
e1“depredations to citrus by this bird”
The same questions in other papers
climate site · pest · CitrusResults agree
1 paper in the same direction as this paper
- positive
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.