Abstract
Summary A two-year study was conducted at two locations in Niger to compare the response of five cowpea cultivars to two planting patterns and two sowing dates relative to the sowing date of pearl millet. All the cowpea cultivars took less time to mature when planted three weeks after millet than when sown one week after. Early-maturing cowpea cultivars had the smallest yield, whereas the yield of the local indeterminate cultivar was nearly double that of the other cultivars at both dates of sowing. Early planting of cowpea significantly depressed millet yield, but when cowpea was planted late millet yields approached those of the sole crop. The local cultivar depressed millet yields more than the other cowpea cultivars. Planting pattern had no significant effect on the yield of either cowpea or millet. Cowpea yield was reduced by more than 50% by two weeks delay in sowing, confirming that the sowing date of cowpea relative to millet is a critical factor in the Sahelian pearl millet/cowpea intercropping system. There were marked differences in the effect of cowpea cultivar on millet yield but these differences were consistent over sowing dates.
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Claims 10
Claim · model-written summary
All cowpea cultivars took less time to mature when planted three weeks after millet than when sown one week after.
- Taxon
- cowpea
Vigna unguiculatat0 - Treatment
- planted three weeks after millete1
- Outcome
- time to maturee1
- Direction
- lesse1
- Comparator
- sown one week aftere1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“All the cowpea cultivars took less time to mature when planted three weeks after millet than when sown one week after”
t0“Response of Cowpea Cultivars”
Claim · model-written summary
Early-maturing cowpea cultivars had the smallest yield.
- Taxon
- cowpeaVigna unguiculatat0
- Material
- Early-maturing cowpea cultivarse2
- Outcome
- yielde2
- Direction
- smalleste2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Early-maturing cowpea cultivars had the smallest yield, whereas the yield of the local indeterminate cultivar was nearly double that of the other cultivars at both dates of sowing”
t0“Response of Cowpea Cultivars”
Claim · model-written summary
The local indeterminate cowpea cultivar yield was nearly double that of the other cultivars at both dates of sowing.
- Taxon
- cowpeaVigna unguiculatat0
- Material
- local indeterminate cultivare2
- Outcome
- yielde2
- Direction
- nearly doublee2
- Comparator
- the other cultivarse2
- Setting
- both dates of sowinge2
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e2“Early-maturing cowpea cultivars had the smallest yield, whereas the yield of the local indeterminate cultivar was nearly double that of the other cultivars at both dates of sowing”
t0“Response of Cowpea Cultivars”
Claim · model-written summary
Early planting of cowpea significantly depressed millet yield.
- Taxon
- pearl millet
Cenchrus americanust1 - Treatment
- Early planting of cowpeae3
- Interactor
- cowpeaVigna unguiculatae3other
- Outcome
- millet yielde3
- Direction
- significantly depressede3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Early planting of cowpea significantly depressed millet yield, but when cowpea was planted late millet yields approached those of the sole crop”
t1“Intercrops with Pearl Millet in Niger”
Claim · model-written summary
When cowpea was planted late, millet yields approached those of the sole crop.
- Taxon
- pearl milletCenchrus americanust1
- Treatment
- cowpea was planted latee3
- Interactor
- cowpeaVigna unguiculatae3other
- Outcome
- millet yieldse3
- Direction
- approachede3
- Comparator
- sole crope3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e3“Early planting of cowpea significantly depressed millet yield, but when cowpea was planted late millet yields approached those of the sole crop”
t1“Intercrops with Pearl Millet in Niger”
Claim · model-written summary
The local cowpea cultivar depressed millet yields more than the other cowpea cultivars.
- Taxon
- pearl milletCenchrus americanust1
- Treatment
- The local cultivare4
- Interactor
- cowpeaVigna unguiculatae4other
- Outcome
- millet yieldse4
- Direction
- depressede4
- Comparator
- the other cowpea cultivarse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The local cultivar depressed millet yields more than the other cowpea cultivars”
t1“Intercrops with Pearl Millet in Niger”
Claim · model-written summary
Planting pattern had no significant effect on the yield of cowpea or millet.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- Planting patterne5
- Outcome
- yield of either cowpea or millete5
- Direction
- no_changeinferrede5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Planting pattern had no significant effect on the yield of either cowpea or millet”
t0“Response of Cowpea Cultivars”
Claim · model-written summary
Cowpea yield was reduced by more than 50% by a two-week delay in sowing.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- two weeks delay in sowinge6
- Outcome
- Cowpea yielde6
- Direction
- reducede6
- Value
- more than 50%e6
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Cowpea yield was reduced by more than 50% by two weeks delay in sowing, confirming that the sowing date of cowpea relative to millet is a critical factor in the Sahelian pearl millet/cowpea intercropping system”
t0“Response of Cowpea Cultivars”
Claim · model-written summary
The sowing date of cowpea relative to millet is a critical factor in the Sahelian pearl millet/cowpea intercropping system.
- Taxon
- cowpeaVigna unguiculatat0
- Treatment
- the sowing date of cowpea relative to millete6
- Outcome
- critical factor in the Sahelian pearl millet/cowpea intercropping systeme6
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e6“Cowpea yield was reduced by more than 50% by two weeks delay in sowing, confirming that the sowing date of cowpea relative to millet is a critical factor in the Sahelian pearl millet/cowpea intercropping system”
t0“Response of Cowpea Cultivars”
Claim · model-written summary
Differences among cowpea cultivars in their effect on millet yield were consistent over sowing dates.
- Taxon
- pearl milletCenchrus americanust1
- Material
- cowpea cultivare7
- Interactor
- cowpeaVigna unguiculatae7other
- Outcome
- effect of cowpea cultivar on millet yielde7
- Qualifier
- consistent over sowing datese7
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e7“There were marked differences in the effect of cowpea cultivar on millet yield but these differences were consistent over sowing dates”
t1“Intercrops with Pearl Millet in Niger”
The same questions in other papers
Vigna unguiculata · yield · Cenchrus americanus (pearl millet)Positive and negative results
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See all 31 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.