Abstract
The experiment was set up to assess the insecticidal properties of Azadirachta indica (neem plant) leaf powder on Sitophilus zeamais Motschulsky. The experiment was laid out in a completely randomized design (CRD), using four replications each for two treatments and also four replications for the control (untreated), from December, 2012 to March, 2013 at the University of Benin, Benin City, Nigeria. These were incubated for 46 days; the F1 progeny and weevil mortality were taken daily. Temperature and relative humidity ranged from 290C to 310C and 70% to 83% respectively. Mortality was highest (3.25) in 10g concentration and lowest (0.25) in the untreated (control). Progeny emergence was highest (187.50) in the untreated (control) and lowest (20.75) in the 10g concentration. The mean progeny emergence in the untreated maize grains was significantly different (P<0.05) from emergence in the treated grains. Analysis of variance showed that Azadirachta indica powders caused significant mortality to the maize weevil, Sitophilus zeamais. There was however, no significant difference between the concentrations, but there was significant difference (P<0.05) between the concentrations and the control. The study suggests that leaf powder of Azadirachta indica can be used as a good alternative to pesticides against Sitophilus zeamais.
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Claims 7
Claim · model-written summary
Weevil mortality was highest at 10 g neem powder, 3.25 versus 0.25 untreated.
- Treatment
- 10g concentratione0
- Interactor
- Sitophilus zeamais
Sitophilus zeamaise2pest - Outcome
- Mortalitye0
- Direction
- higheste0
- Value
- 3.25e0
- Qualifier
- 0.25e0
- Comparator
- untreated (control)e0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Mortality was highest (3.25) in 10g concentration and lowest (0.25) in the untreated (control).”
e1“untreated maize grains”
e2“maize weevil, Sitophilus zeamais”
t0“Azadirachta indica (NEEM PLANT) LEAF POWDER”
Claim · model-written summary
Weevil progeny emergence was lowest at 10 g powder, 20.75 versus 187.50 untreated.
- Treatment
- 10g concentratione0
- Interactor
- Sitophilus zeamaisSitophilus zeamaise2pest
- Outcome
- Progeny emergencee0
- Direction
- loweste0
- Value
- 20.75e0
- Qualifier
- 187.50e0
- Comparator
- untreated (control)e0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Progeny emergence was highest (187.50) in the untreated (control) and lowest (20.75) in the 10g concentration.”
e1“untreated maize grains”
e2“maize weevil, Sitophilus zeamais”
Claim · model-written summary
Mean weevil progeny emergence differed significantly between treated and untreated maize grains.
- Treatment
- treated grainse0
- Interactor
- Sitophilus zeamaisSitophilus zeamaise1pest
- Outcome
- mean progeny emergencee0
- Direction
- differente0
- Comparator
- untreated maize grainse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The mean progeny emergence in the untreated maize grains was significantly different (P<0.05) from emergence in the treated grains.”
e1“maize weevil, Sitophilus zeamais”
Claim · model-written summary
Neem powder significantly increased maize weevil mortality.
- Treatment
- Azadirachta indica powderse0
- Interactor
- Sitophilus zeamaisSitophilus zeamaise0pest
- Outcome
- mortality to the maize weevil, Sitophilus zeamaise0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Azadirachta indica powders caused significant mortality to the maize weevil, Sitophilus zeamais.”
e1“untreated maize grains”
Claim · model-written summary
Mortality did not differ significantly among neem powder concentrations.
- Treatment
- LEAF POWDERt0
- Interactor
- Sitophilus zeamaisSitophilus zeamaise1pest
- Outcome
- no significant difference between the concentrationse0
- Direction
- no significant differencee0
- Comparator
- concentrationse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was however, no significant difference between the concentrations”
e1“maize weevil, Sitophilus zeamais”
e2“untreated maize grains”
t0“Azadirachta indica (NEEM PLANT) LEAF POWDER”
Claim · model-written summary
The powder concentrations differed significantly from the untreated control.
- Treatment
- LEAF POWDERt0
- Interactor
- Sitophilus zeamaisSitophilus zeamaise1pest
- Outcome
- significant differencee0
- Comparator
- the controle0
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“there was significant difference (P<0.05) between the concentrations and the control.”
e1“maize weevil, Sitophilus zeamais”
e2“untreated maize grains”
t0“Azadirachta indica (NEEM PLANT) LEAF POWDER”
Claim · model-written summary
The authors propose neem leaf powder as an alternative to pesticides against maize weevil.
- Interactor
- Sitophilus zeamaisSitophilus zeamaise0pest
- Outcome
- good alternative to pesticides against Sitophilus zeamaise0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“leaf powder of Azadirachta indica can be used as a good alternative to pesticides against Sitophilus zeamais.”
e1“untreated maize grains”
The same questions in other papers
Azadirachta indica · Sitophilus zeamais · Zea mays (maize)Results agree
12 papers in the same direction as this paper
- positive
- positive
- positive
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See all 13 papers →botanical · Sitophilus zeamais · Zea mays (maize)Positive and negative results
112 papers in the same direction as this paper · 4 in the opposite direction
- negative
- negative
- no effect
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See all 117 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.