Abstract
ABSTRACT Corn weevil (Sitophilus zeamais) may cause great losses in the crop and in stored corn grains. This insect is controlled with the use of chemical insecticides, which may cause serious damage to human health. One alternative of control is the use of inert dusts. The objective of this study was to evaluate the efficiency of inert dusts in the control of S. zeamais under laboratory conditions. The experiment was conducted in 2014, in a completely randomized design, and the treatments consisted of basalt dust with three different granulometries (A, B and C) and diatomaceous earth, each of which at the doses of 2 and 4 kg t-1 and a control (no application). Each treatment had four replicates, and the sample unit consisted of 20 g of corn grains infected with 10 adults of S. zeamais kept in temperature-controlled chamber at 25 °C, 70% RH and photophase of 12 h. The dust efficiency was calculated using the equation of Abbott. The mortality rate was higher with the use of diatomaceous earth, reaching 100% after 5 days of exposure and the percentage of control for basalt dusts, 29 days after treatment, was above 80%.
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Claims 2
Claim · model-written summary
Diatomaceous earth gave the highest corn weevil mortality, reaching 100% after five days.
- Taxon
- corn
Zea mays subsp. mayse1 - Treatment
- diatomaceous earthe0
- Interactor
- Sitophilus zeamais
Sitophilus zeamaise1pest - Outcome
- mortality ratee0
- Direction
- highere0
- Value
- 100%e0
- Qualifier
- after 5 days of exposuree0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The mortality rate was higher with the use of diatomaceous earth, reaching 100% after 5 days of exposure”
e1“Corn weevil (Sitophilus zeamais) may cause great losses in the crop and in stored corn grains.”
Claim · model-written summary
Basalt dust achieved over 80% corn weevil control after 29 days.
- Taxon
- cornZea mays subsp. mayse1
- Treatment
- basalt dustse0
- Interactor
- Sitophilus zeamaisSitophilus zeamaise1pest
- Outcome
- percentage of controle0
- Direction
- abovee0
- Value
- 80%e0
- Qualifier
- 29 days after treatmente0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“the percentage of control for basalt dusts, 29 days after treatment, was above 80%.”
e1“Corn weevil (Sitophilus zeamais) may cause great losses in the crop and in stored corn grains.”
The same questions in other papers
diatomaceous earth · Sitophilus zeamais · Zea mays (maize)Results agree
5 papers in the same direction as this paper
- positive
- positive
- positive
2 papers more in this group
See all 6 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.