Abstract
Abstract 1 Field experiments were conducted on maize and sorghum at three locations in the Amhara state of Ethiopia to determine the effects of mixed cropping on stemborer infestation, borer natural enemies and grain yields. In the cool‐wet ecozone of western Amhara, sole maize was compared with maize intercropped with faba bean, mustard, potatoes and cowpea. In the semi‐arid ecozone of eastern Amhara, the trial was conducted on both maize and sorghum with the companion crops haricot bean, sesame, cowpea and sweet potatoes. 2 The results showed that the predominant borer species in western and eastern Amhara were, respectively, Busseola fusca and Chilo partellus . In Addis Zemen, western Amhara, maize intercropped with mustard and potatoes had significantly lower pest numbers and percent tunnelling than other intercrops and the maize monocrop during the vegetative stage. In eastern Amhara, the cropping system did not significantly affect pest densities but damage to stem, ear or heads tended to be greatest when cereals were intercropped with sweet potatoes. 3 Parasitism of C. partellus by the braconid Cotesia flavipes was greater on maize than sorghum, and on maize it was greater with sweet potatoes than in other intercrops or sole maize. Cocoon mass number per plant did not vary significantly between treatments. 4 There were significant differences between treatments in yields of both sorghum and maize (per plant and per unit area) with the lowest yields observed when they were intercropped with a tuber crop. 5 The results suggest that simultaneous planting of the crop species selected has little advantage over monocropped maize.
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Claims 11
Claim · model-written summary
Busseola fusca predominated in western Amhara.
- Interactor
- Busseola fusca
Busseola fuscae0pest - Outcome
- predominant borer speciese0
- Setting
- westerne0
Zea maysOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“predominant borer species in western and eastern Amhara were, respectively, Busseola fusca and Chilo partellus”
e1“Field experiments were conducted on maize and sorghum”
Claim · model-written summary
Chilo partellus predominated in eastern Amhara.
- Interactor
- Chilo partellus
_Figure_27c.jpg?width=60)
Chilo partelluse0pest - Outcome
- predominant borer speciese0
- Setting
- eastern Amharae0
SorghumOrganisms pictured · Representative pictures of the matched species, not figures from the paper.
_Figure_27c.jpg?width=500)
Verbatim
e0“predominant borer species in western and eastern Amhara were, respectively, Busseola fusca and Chilo partellus”
e1“Field experiments were conducted on maize and sorghum”
Claim · model-written summary
Mustard and potato intercrops significantly reduced maize borer numbers and tunnelling at vegetative stage.
- Organ / stage
- vegetative stagee0
- Treatment
- mustard and potatoese0
- Outcome
- pest numbers and percent tunnellinge0
- Direction
- lowere0
- Comparator
- other intercrops and the maize monocrope0
- Setting
- Addis Zemen, western Amharae1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“maize intercropped with mustard and potatoes had significantly lower pest numbers and percent tunnelling than other intercrops and the maize monocrop during the vegetative stage”
e1“In Addis Zemen, western Amhara”
Claim · model-written summary
Cropping system did not significantly affect pest densities in eastern Amhara.
- Treatment
- cropping systeme0
- Outcome
- pest densitiese0
- Direction
- did not significantly affecte0
- Setting
- eastern Amharae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“In eastern Amhara, the cropping system did not significantly affect pest densities”
e1“trial was conducted on both maize and sorghum”
Claim · model-written summary
Cereal damage tended to be greatest with sweet potato intercrops.
- Treatment
- intercropped with sweet potatoese0
- Outcome
- damage to stem, ear or headse0
- Direction
- greateste0
- Qualifier
- tendede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“damage to stem, ear or heads tended to be greatest when cereals were intercropped with sweet potatoes”
e1“trial was conducted on both maize and sorghum”
Claim · model-written summary
Cotesia flavipes parasitism of C. partellus was greater on maize than sorghum.
- Interactor
- C. partellusChilo partelluse0pest
- Second interactor
- Cotesia flavipes
_Figure_7.jpg?width=60)
Cotesia flavipese0biocontrol_agent - Outcome
- Parasitism of C. partelluse0
- Direction
- greatere0
- Comparator
- sorghume0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Figure_7.jpg?width=500)
Verbatim
e0“Parasitism of C. partellus by the braconid Cotesia flavipes was greater on maize than sorghum”
Claim · model-written summary
On maize, Cotesia flavipes parasitism was greater with sweet potatoes than other intercrops or sole maize.
- Treatment
- sweet potatoese0
- Interactor
- C. partellusChilo partelluse1pest
- Second interactor
- Cotesia flavipesCotesia flavipese1biocontrol_agent
- Outcome
- Parasitism of C. partelluse1
- Direction
- greatere0
- Comparator
- other intercrops or sole maizee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“on maize it was greater with sweet potatoes than in other intercrops or sole maize”
e1“Parasitism of C. partellus by the braconid Cotesia flavipes”
Claim · model-written summary
Cocoon mass number per plant did not differ significantly between treatments.
- Treatment
- treatmentse0
- Interactor
- Cotesia flavipesCotesia flavipese1biocontrol_agent
- Outcome
- Cocoon mass number per plante0
- Direction
- did not varye0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Cocoon mass number per plant did not vary significantly between treatments”
e1“Parasitism of C. partellus by the braconid Cotesia flavipes”
e2“on maize it was greater with sweet potatoes”
Claim · model-written summary
Sorghum yields were significantly different among treatments and lowest with a tuber intercrop.
- Treatment
- intercropped with a tuber crope0
- Outcome
- yieldse0
- Direction
- loweste0
- Qualifier
- per plant and per unit areae0
- Comparator
- treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were significant differences between treatments in yields of both sorghum and maize (per plant and per unit area) with the lowest yields observed when they were intercropped with a tuber crop”
Claim · model-written summary
Maize yields were significantly different among treatments and lowest with a tuber intercrop.
- Treatment
- intercropped with a tuber crope0
- Outcome
- yieldse0
- Direction
- loweste0
- Qualifier
- per plant and per unit areae0
- Comparator
- treatmentse0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There were significant differences between treatments in yields of both sorghum and maize (per plant and per unit area) with the lowest yields observed when they were intercropped with a tuber crop”
Claim · model-written summary
The selected simultaneous intercrops offered little advantage over monocropped maize.
- Outcome
- simultaneous planting of the crop species selected has little advantagee0
- Comparator
- monocropped maizee0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“simultaneous planting of the crop species selected has little advantage over monocropped maize”
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See all 834 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.