Abstract
Cocoyam was grown with vegetable cowpea in sole cropping and in intercropping to examine the effects of four contrasting vegetable cowpea growth habits on the productivity of the component crops in Umudike, southeastern Nigeria. The experiment was laid out in a randomized complete block design with three replications. Treatments comprised all combinations of cocoyam and four cowpea cultivars (spreading Akidi ani, climbing Akidi enu, semi erect IT81D-128-14 and erect IT86F-2014-1) and sole crops of each crop. On average, intercropping reduced cocoyam corm yield by 22% in spreading Akidi ani, 25% in semi erect IT81D- 128-14 and 41% in erect IT86F-2014-1. Similarly, intercropping reduced cowpea pod yield by 21% in erect IT86F-2014-1, 22% in climbing Akidi enu and 27% in semi erect IT81D-128-14. The climbing Akidi enu had the least adverse effect on corm yield and gave high pod yield, with a high combined average land equivalent ratio (LER) of 1.8.Keywords: Cocoyam, vegetable cowpea, growth habit, productivity
Abstract from the paper’s OpenAlex record, shown for indexing and research. Copyright remains with the authors or the publisher. 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 9
Claim · model-written summary
Intercropping reduced cocoyam corm yield by 22% in spreading Akidi ani relative to sole cropping.
- Taxon
- cocoyam
Colocasia esculentae1 - Material
- spreading Akidi anie1
- Treatment
- intercroppinge1
- Outcome
- corm yielde1
- Direction
- reducede1
- Value
- 22%e1
- Comparator
- sole croppinge2
- Setting
- Umudike, southeastern Nigeriae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Colocasia_esculenta_-_Les_Martels%2C_Giroussens_Tarn.jpg?width=500)
Verbatim
e0“productivity of the component crops in Umudike, southeastern Nigeria”
e1“On average, intercropping reduced cocoyam corm yield by 22% in spreading Akidi ani, 25% in semi erect IT81D- 128-14 and 41% in erect IT86F-2014-1”
e2“Cocoyam was grown with vegetable cowpea in sole cropping and in intercropping”
Claim · model-written summary
Intercropping reduced cocoyam corm yield by 25% in semi erect IT81D-128-14 relative to sole cropping.
- Taxon
- cocoyam
Colocasia esculentae1 - Material
- semi erect IT81D- 128-14e1
- Treatment
- intercroppinge1
- Outcome
- corm yielde1
- Direction
- reducede1
- Value
- 25%e1
- Comparator
- sole croppinge2
- Setting
- Umudike, southeastern Nigeriae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Colocasia_esculenta_-_Les_Martels%2C_Giroussens_Tarn.jpg?width=500)
Verbatim
e0“productivity of the component crops in Umudike, southeastern Nigeria”
e1“On average, intercropping reduced cocoyam corm yield by 22% in spreading Akidi ani, 25% in semi erect IT81D- 128-14 and 41% in erect IT86F-2014-1”
e2“Cocoyam was grown with vegetable cowpea in sole cropping and in intercropping”
Claim · model-written summary
Intercropping reduced cocoyam corm yield by 41% in erect IT86F-2014-1 relative to sole cropping.
- Taxon
- cocoyam
Colocasia esculentae1 - Material
- erect IT86F-2014-1e1
- Treatment
- intercroppinge1
- Outcome
- corm yielde1
- Direction
- reducede1
- Value
- 41%e1
- Comparator
- sole croppinge2
- Setting
- Umudike, southeastern Nigeriae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Colocasia_esculenta_-_Les_Martels%2C_Giroussens_Tarn.jpg?width=500)
Verbatim
e0“productivity of the component crops in Umudike, southeastern Nigeria”
e1“On average, intercropping reduced cocoyam corm yield by 22% in spreading Akidi ani, 25% in semi erect IT81D- 128-14 and 41% in erect IT86F-2014-1”
e2“Cocoyam was grown with vegetable cowpea in sole cropping and in intercropping”
Claim · model-written summary
Intercropping reduced pod yield of vegetable cowpea erect IT86F-2014-1 by 21% relative to sole cropping.
- Taxon
- cowpea
Vigna unguiculatae4 - Material
- erect IT86F-2014-1e4
- Treatment
- intercroppinge4
- Outcome
- pod yielde4
- Direction
- reducede4
- Value
- 21%e4
- Comparator
- sole croppinge2
- Setting
- Umudike, southeastern Nigeriae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“productivity of the component crops in Umudike, southeastern Nigeria”
e2“Cocoyam was grown with vegetable cowpea in sole cropping and in intercropping”
e4“Similarly, intercropping reduced cowpea pod yield by 21% in erect IT86F-2014-1, 22% in climbing Akidi enu and 27% in semi erect IT81D-128-14”
Claim · model-written summary
Intercropping reduced pod yield of vegetable cowpea climbing Akidi enu by 22% relative to sole cropping.
- Taxon
- cowpea
Vigna unguiculatae4 - Material
- climbing Akidi enue4
- Treatment
- intercroppinge4
- Outcome
- pod yielde4
- Direction
- reducede4
- Value
- 22%e4
- Comparator
- sole croppinge2
- Setting
- Umudike, southeastern Nigeriae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“productivity of the component crops in Umudike, southeastern Nigeria”
e2“Cocoyam was grown with vegetable cowpea in sole cropping and in intercropping”
e4“Similarly, intercropping reduced cowpea pod yield by 21% in erect IT86F-2014-1, 22% in climbing Akidi enu and 27% in semi erect IT81D-128-14”
Claim · model-written summary
Intercropping reduced pod yield of vegetable cowpea semi erect IT81D-128-14 by 27% relative to sole cropping.
- Taxon
- cowpea
Vigna unguiculatae4 - Material
- semi erect IT81D-128-14e4
- Treatment
- intercroppinge4
- Outcome
- pod yielde4
- Direction
- reducede4
- Value
- 27%e4
- Comparator
- sole croppinge2
- Setting
- Umudike, southeastern Nigeriae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“productivity of the component crops in Umudike, southeastern Nigeria”
e2“Cocoyam was grown with vegetable cowpea in sole cropping and in intercropping”
e4“Similarly, intercropping reduced cowpea pod yield by 21% in erect IT86F-2014-1, 22% in climbing Akidi enu and 27% in semi erect IT81D-128-14”
Claim · model-written summary
Climbing Akidi enu had the least adverse effect on cocoyam corm yield among the intercropped cowpea cultivars.
- Taxon
- cocoyam
Colocasia esculentae2 - Material
- climbing Akidi enue3
- Treatment
- intercroppinge2
- Outcome
- corm yielde3
- Direction
- least adversee3
- Setting
- Umudike, southeastern Nigeriae0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Colocasia_esculenta_-_Les_Martels%2C_Giroussens_Tarn.jpg?width=500)
Verbatim
e0“productivity of the component crops in Umudike, southeastern Nigeria”
e2“Cocoyam was grown with vegetable cowpea in sole cropping and in intercropping”
e3“The climbing Akidi enu had the least adverse effect on corm yield and gave high pod yield, with a high combined average land equivalent ratio (LER) of 1.8”
Claim · model-written summary
Climbing Akidi enu gave high pod yield in the intercrop.
- Taxon
- vegetable cowpeae2
- Material
- climbing Akidi enue3
- Treatment
- intercroppinge2
- Outcome
- pod yielde3
- Direction
- highe3
- Setting
- Umudike, southeastern Nigeriae0
Not reportedComparator
Verbatim
e0“productivity of the component crops in Umudike, southeastern Nigeria”
e2“Cocoyam was grown with vegetable cowpea in sole cropping and in intercropping”
e3“The climbing Akidi enu had the least adverse effect on corm yield and gave high pod yield, with a high combined average land equivalent ratio (LER) of 1.8”
Claim · model-written summary
The combined average land equivalent ratio of the cocoyam intercrop was 1.8.
- Taxon
- cocoyam
Colocasia esculentae2 - Outcome
- land equivalent ratio (LER)e3
- Value
- 1.8e3
- Setting
- Umudike, southeastern Nigeriae0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
_Colocasia_esculenta_-_Les_Martels%2C_Giroussens_Tarn.jpg?width=500)
Verbatim
e0“productivity of the component crops in Umudike, southeastern Nigeria”
e2“Cocoyam was grown with vegetable cowpea in sole cropping and in intercropping”
e3“The climbing Akidi enu had the least adverse effect on corm yield and gave high pod yield, with a high combined average land equivalent ratio (LER) of 1.8”
The same questions in other papers
intercropping · yield · Colocasia esculenta (taro)Results differ
4 papers in the same direction as this paper · 2 in the opposite direction
- negative
- negative
- positive
3 papers more in this group
See all 7 papers →intercropping · yield · Vigna unguiculata (cowpea)Results differ
39 papers in the same direction as this paper · 63 in the opposite direction
- positive
- positive
- positive
99 papers more in this group
See all 103 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.