Abstract
Abstract Sweet potato weevils (Cylas puncticollis and C. formicarius) are notorious pests of sweet potato and cause severe losses in marketable yield. The study tested the use of Beauveria bassiana ((Balsamo) Vuillemin) (Deuteromycota: Hyphomycetes) for controlling sweet potato weevils. An experiment was conducted using four treatments: 1) dipping sweet potato cuttings in solution of 1 g/litre B. bassiana before planting, 2) spraying with the registered chemical Deltametrin at 50ml/100litre every 2 weeks for four months after planting, 3) spraying the leaves every 2 weeks with B. bassiana (10 g/100 litre) for four months after planting; and 4) a control (sprayed with distilled water). The experimental design was a Latin square with split plot design: pest management strategy as main plot factor and cultivars (Bophelo, Ndou and Blesbok) as subplot factors. Spraying with B. bassiana significantly reduced the percentage of insect damaged roots (5.31%) compared to the control (13.75%). Dipping did not significantly reduce the number of insect damaged roots (12.13%). There was no significant difference between the chemical spray (5.88% insect damage) and spraying with B. bassiana (5.31% insect damage). The preliminary investigation indicated that B. bassiana can be considered as an alternative control method for the sweet potato weevil.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. Read at the source ↗
The text the model read, with the source record’s inline markup (italics, sub- and superscripts) rendered and its character entities decoded; quote offsets refer to the raw text.
Claims 4
Claim · model-written summary
Spraying with Beauveria bassiana significantly reduced insect-damaged sweet potato roots to 5.31%, compared with 13.75% in the control.
- Taxon
- sweet potato
_Flower.jpg?width=60)
Ipomoea batatase0 - Treatment
- Spraying with B. bassianae1
- Interactor
- Cylas puncticollis and C. formicarius
Cylas formicariusCylas puncticollise0pest - Second interactor
- B. bassiana
Beauveria bassianae1biocontrol_agent - Outcome
- percentage of insect damaged rootse1
- Direction
- reducede1
- Value
- 5.31%e1
- Comparator
- controle1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Flower.jpg?width=500)
Verbatim
e0“Sweet potato weevils (Cylas puncticollis and C. formicarius) are notorious pests of sweet potato”
e1“Spraying with B. bassiana significantly reduced the percentage of insect damaged roots (5.31%) compared to the control (13.75%)”
Claim · model-written summary
Dipping cuttings in Beauveria bassiana solution did not significantly reduce insect-damaged roots (12.13%).
- Taxon
- sweet potatoIpomoea batatase0
- Treatment
- Dippinge2
- Outcome
- number of insect damaged rootse2
- Direction
- reducee2
- Value
- 12.13%e2
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sweet potato weevils (Cylas puncticollis and C. formicarius) are notorious pests of sweet potato”
e2“Dipping did not significantly reduce the number of insect damaged roots (12.13%)”
Claim · model-written summary
The chemical spray and Beauveria bassiana spraying gave no significant difference in insect damage (5.88% vs 5.31%).
- Taxon
- sweet potatoIpomoea batatase0
- Treatment
- chemical spraye3
- Outcome
- insect damagee3
- Direction
- no significant differencee3
- Value
- 5.88%e3
- Comparator
- spraying with B. bassianae3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Sweet potato weevils (Cylas puncticollis and C. formicarius) are notorious pests of sweet potato”
e3“There was no significant difference between the chemical spray (5.88% insect damage) and spraying with B. bassiana (5.31% insect damage)”
Claim · model-written summary
Beauveria bassiana can be considered an alternative control method for the sweet potato weevil.
- Taxon
- sweet potatoIpomoea batatase4
- Interactor
- sweet potato weevilCylas formicariuse4pest
- Second interactor
- B. bassianaBeauveria bassianae4biocontrol_agent
- Outcome
- alternative control methode4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The preliminary investigation indicated that B. bassiana can be considered as an alternative control method for the sweet potato weevil”
The same questions in other papers
Beauveria bassiana · Cylas puncticollis · Ipomoea batatas (sweet potato)Results agree
1 paper in the same direction as this paper
- positive
Beauveria bassiana · Cylas formicarius · Ipomoea batatas (sweet potato)Results agree
2 papers in the same direction as this paper
- positive
- positive
application · pest · Ipomoea batatas (sweet potato)Positive and negative results
2 reporting no difference from an alternative
- positive
- positive
application · Cylas formicarius · Ipomoea batatas (sweet potato)Results agree
4 papers in the same direction as this paper
- positive
- positive
- positive
1 paper more in this group
See all 5 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.