Abstract
The effects of cropping systems (cassava monocropped and intercropped with maize), pest interventions (spray of acaricide and release of an exotic phytoseiid) and cultivars (‘Agric’ and ‘TMS 30572’) on the population dynamics of the green mite, Mononychellus tanajoa (Bondar), were evaluated in 2 locations (Dogbo and Intemational Institute of Tropical Agriculture) in Benin Republic, West Africa. Maize and cassava were intercropped at the beginning of the wet season. Pest interventions were applied during the dry season with Amblyseius manihoti Moraes (= limonicus s.l.) (Garman & McGregor) (Acari: Phytoseiidae) released at the beginning of the dry season at both sites and the acaricide dimethoate sprayed bimonthly at Dogbo and once in December at the International Institute of Tropical Agriculture. Intercropping cassava with maize had no significant effect on M. tanajoa and associated phytoseiid predator populations during the intercropping, dry, and postdry seasons. The acaricide spray reduced M. tanajoa densities 50% below those of the predator and the control (no predator and no spray) treatments. A. manihoti reduced M. tanajoa densities 20% below the control treatment by the end of the experiment. Agric supported 2–3 times more mites per leaf than did TMS 30572. A pest management strategy that combines resistant cultivars and an efficient exotic predator is suggested to control M. tanajoa .
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Claims 6
Claim · model-written summary
Intercropping cassava with maize had no significant effect on M. tanajoa populations during the intercropping, dry and postdry seasons.
- Taxon
- cassava
Manihot esculentae0 - Treatment
- Intercropping cassava with maizee1
- Interactor
- M. tanajoaMononychellus tanajoae1pest
- Outcome
- M. tanajoae1
- Direction
- no_changeinferrede1
- Comparator
- cassava monocroppede0
- Setting
- during the intercropping, dry, and postdry seasonse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Intercropping cassava with maize had no significant effect on M. tanajoa and associated phytoseiid predator populations during the intercropping, dry, and postdry seasons”
e0“cassava monocropped and intercropped with maize”
Claim · model-written summary
Intercropping cassava with maize had no significant effect on the associated phytoseiid predator populations during the intercropping, dry and postdry seasons.
- Taxon
- cassavaManihot esculentae0
- Treatment
- Intercropping cassava with maizee1
- Interactor
- phytoseiid predatore1biocontrol_agent
- Outcome
- associated phytoseiid predator populationse1
- Direction
- no_changeinferrede1
- Comparator
- cassava monocroppede0
- Setting
- during the intercropping, dry, and postdry seasonse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Intercropping cassava with maize had no significant effect on M. tanajoa and associated phytoseiid predator populations during the intercropping, dry, and postdry seasons”
e0“cassava monocropped and intercropped with maize”
Claim · model-written summary
The acaricide spray reduced M. tanajoa densities by 50% relative to those of the predator and the control (no predator and no spray) treatments.
- Taxon
- cassavaManihot esculentae0
- Treatment
- The acaricide spraye2
- Interactor
- M. tanajoaMononychellus tanajoae2pest
- Outcome
- M. tanajoa densitiese2
- Direction
- reducede2
- Value
- 50%e2
- Comparator
- control (no predator and no spray)e2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“The acaricide spray reduced M. tanajoa densities 50% below those of the predator and the control (no predator and no spray) treatments”
e0“cassava monocropped and intercropped with maize”
Claim · model-written summary
The exotic phytoseiid Amblyseius manihoti reduced M. tanajoa densities by 20% below the control treatment by the end of the experiment.
- Taxon
- cassavaManihot esculentae0
- Treatment
- A. manihotie3
- Interactor
- M. tanajoaMononychellus tanajoae3pest
- Second interactor
- A. manihotiAmblydromalus manihotie3biocontrol_agent
- Outcome
- M. tanajoa densitiese3
- Direction
- reducede3
- Value
- 20%e3
- Qualifier
- by the end of the experimente3
- Comparator
- control treatmente3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“A. manihoti reduced M. tanajoa densities 20% below the control treatment by the end of the experiment”
e0“cassava monocropped and intercropped with maize”
Claim · model-written summary
Cultivar Agric supported 2-3 times more mites per leaf than cultivar TMS 30572 on cassava.
- Taxon
- cassavaManihot esculentae0
- Material
- Agrice4
- Interactor
- mitese4pest
- Outcome
- mites per leafe4
- Direction
- moree4
- Value
- 2–3 timese4
- Comparator
- TMS 30572e4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“Agric supported 2–3 times more mites per leaf than did TMS 30572”
e0“cassava monocropped and intercropped with maize”
Claim · model-written summary
A pest management strategy combining resistant cultivars and an efficient exotic predator is suggested to control M. tanajoa on cassava.
- Taxon
- cassavaManihot esculentae0
- Outcome
- pest management strategy that combines resistant cultivars and an efficient exotic predatore5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“A pest management strategy that combines resistant cultivars and an efficient exotic predator is suggested to control M. tanajoa”
e0“cassava monocropped and intercropped with maize”
The same questions in other papers
Zea mays · pest · Manihot esculenta (cassava)Positive and negative results
1 reporting no difference from an alternative
- positive
intercropping · pest · Manihot esculenta (cassava)Positive and negative results
4 reporting no difference from an alternative
- 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.