Abstract
The efficacy of garlic spray (GS; Garlic Barrier™) as an alternative to conventional chemical control of disease and insect pests was evaluated on bell pepper and lettuce. Treatments consisted of a recommended chemical spray as needed (Treat. 1), GS applied once (Treat. 2) or twice (Treat. 3) a week, and water spray applied twice a week (Treat. 4). Because of no pest pressure during the test, no chemical sprays were used in Treat. 1. Differences among bell pepper yields were not significant ( P > 0.50). For lettuce, Treat. 2 resulted in significantly ( P = 0.02) higher head yield. Differences among treatments were not visually detectable in the field. These results suggested that GB applied at the manufacturer's rate (Treat. 2) did not adversely affect bell pepper and lettuce growth and yield. Garlic smell was not detectable on either vegetables, even after Treat. 3. Due to a low pest pressure, this study failed to identify beneficial effects of the GS. Without more scientific reports, relying only on GS to control pests of bell pepper and lettuce may involve uncontrolled risks.
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Claims 6
Claim · model-written summary
Bell pepper yields did not differ significantly among treatments.
Not reportedComparator
Verbatim
e0“Differences among bell pepper yields were not significant ( P > 0.50)”
e1“garlic spray”
Claim · model-written summary
Weekly garlic spray increased lettuce head yield significantly.
Lactuca sativaNot reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“For lettuce, Treat. 2 resulted in significantly ( P = 0.02) higher head yield”
Claim · model-written summary
Treatment differences were not visually detectable in the field.
- Taxon
- bell pepper and lettucee1
- Treatment
- treatmentse0
- Outcome
- visually detectablee0
- Direction
- not visually detectablee0
- Setting
- fielde0
Not reportedComparator
Verbatim
e0“Differences among treatments were not visually detectable in the field”
e1“evaluated on bell pepper and lettuce”
Claim · model-written summary
Garlic odor was undetectable on both crops even with twice-weekly spray.
Not reportedComparator
Verbatim
e0“Garlic smell was not detectable on either vegetables, even after Treat. 3”
e1“evaluated on bell pepper and lettuce”
Claim · model-written summary
The study did not identify pest-control benefits of garlic spray under low pest pressure.
- Taxon
- bell pepper and lettucee1
- Treatment
- GSe0
- Outcome
- beneficial effectse0
- Direction
- failed to identifye0
- Qualifier
- low pest pressuree0
Not reportedComparator
Verbatim
e0“Due to a low pest pressure, this study failed to identify beneficial effects of the GS”
e1“evaluated on bell pepper and lettuce”
Claim · model-written summary
Authors caution against sole reliance on garlic spray for pest control.
Verbatim
e0“relying only on GS to control pests of bell pepper and lettuce may involve uncontrolled risks”
The same questions in other papers
application · yield · Capsicum annuum (sweet pepper)Positive and negative results
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See all 66 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.