Abstract
A laboratory experiment was conducted in the Michael Okpara University laboratory Umudike under an ambient temperature and relative humidity of 28+20C and 75+5% RH to evaluate the potency of two plant powders, clay and Permethrin for the control of maize storage weevil (Sitophilus zeamais). The extracts tested were obtained from leaves of Moringa oleifera and Alchornea cordifolia. The experiment was a Completely Randomized Design. Powders obtained from air dried leaves were tested at 0.0g, 2.0g, 4.0g, 6.0g and 8.0g w/w concentrations. Parameters assessed were effects of plant materials clay and Permethrin on weevil mortality, emergence count, Percentage grain weight loss and percentage germination of seeds after storage. Results showed that the 6.0g and 8.0g powders significantly (P<0.05) increased weevil cumulative mortality and suppressed emergence compared to other dosages and control. The study also revealed that protection on grains against weevil attack was dosage-dependent as higher doses gave high resistance to weevil attack. Alchornea cordifolia performed better than Moringa oleifera among the plant extracts tested as it competed favourably with Permethrin and clay. Seed viability test showed that powder treatments had no deleterious effects on the germination potential of treated grains. The implication of this result is that A. cordifolia and M. oleifera can be used for the control of S. zeamais attacking maize during storage. Higher dosages of 4g/50g, 60g/50g and 8g/50g maize grains are recommended for effective insecticidal activity.
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Claims 7
Claim · model-written summary
Powders at 6.0 g and 8.0 g significantly increased cumulative mortality of Sitophilus zeamais on maize compared with other doses and the control.
- Treatment
- 6.0g and 8.0g powderse1
- Interactor
- Sitophilus zeamais
Sitophilus zeamaist1pest - Outcome
- weevil cumulative mortalitye1
- Direction
- increasede1
- Qualifier
- P<0.05e1
- Comparator
- other dosages and controle1
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Attacking Maize Grains in Storage”
t1“Sitophilus zeamais”
e1“Results showed that the 6.0g and 8.0g powders significantly (P<0.05) increased weevil cumulative mortality and suppressed emergence compared to other dosages and control”
Claim · model-written summary
Powders at 6.0 g and 8.0 g suppressed weevil emergence compared with other doses and the control.
- Treatment
- 6.0g and 8.0g powderse1
- Interactor
- Sitophilus zeamaisSitophilus zeamaist1pest
- Outcome
- emergencee1
- Direction
- suppressede1
- Qualifier
- P<0.05e1
- Comparator
- other dosages and controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Attacking Maize Grains in Storage”
t1“Sitophilus zeamais”
e1“Results showed that the 6.0g and 8.0g powders significantly (P<0.05) increased weevil cumulative mortality and suppressed emergence compared to other dosages and control”
Claim · model-written summary
Protection of grains against weevil attack was dosage-dependent, with higher doses giving higher resistance.
- Treatment
- higher dosese2
- Outcome
- protection on grains against weevil attacke2
- Direction
- highere2
- Qualifier
- dosage-dependente2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Attacking Maize Grains in Storage”
e2“The study also revealed that protection on grains against weevil attack was dosage-dependent as higher doses gave high resistance to weevil attack”
Claim · model-written summary
Alchornea cordifolia performed better than Moringa oleifera and competed favourably with Permethrin and clay.
- Treatment
- Alchornea cordifoliae3
- Outcome
- competed favourablye3
- Direction
- performed bettere3
- Qualifier
- with Permethrin and claye3
- Comparator
- Moringa oleiferae3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Attacking Maize Grains in Storage”
e3“Alchornea cordifolia performed better than Moringa oleifera among the plant extracts tested as it competed favourably with Permethrin and clay”
Claim · model-written summary
Powder treatments had no deleterious effect on the germination potential of treated grains.
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
t0“Attacking Maize Grains in Storage”
e4“Seed viability test showed that powder treatments had no deleterious effects on the germination potential of treated grains”
Claim · model-written summary
Alchornea cordifolia and Moringa oleifera can be used to control Sitophilus zeamais attacking maize during storage.
- Interactor
- S. zeamaisSitophilus zeamaise5pest
- Outcome
- control of S. zeamaise5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“The implication of this result is that A. cordifolia and M. oleifera can be used for the control of S. zeamais attacking maize during storage”
Claim · model-written summary
Higher dosages of 4g/50g, 60g/50g and 8g/50g of maize grains are recommended for effective insecticidal activity.
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Higher dosages of 4g/50g, 60g/50g and 8g/50g maize grains are recommended for effective insecticidal activity”
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