Paper · 1997 · Journal of Agronomy and Crop Science

Effect of Relative Sowing Time on the Growth and Yield of the Component Crops in Okra/Maize and Okra/Cowpea Intercropping Systems

C. O. Muoneke; J. E. Asiegbu; A. C. C. Udeogalanya

9
claims
11
verbatim quotes
19
citations
2
research areas
—
Not open access

Abstract

Abstract The effects of variations in the relative sowing time of component crops in okra/maize and okra/cowpea intercropping systems were examined in 1990 and 1991 cropping seasons. Okra was either sown the same day as, or two weeks before or after maize or cowpea. Intercropping reduced the growth and yield of okra, maize and cowpea relative to their sole crops. However, okra yield was depressed more by maize than by cowpea, especially when okra was sown two weeks after maize. Comparative assessment of okra/maize and okra/cowpea mixtures suggests that it is better to grow okra and cowpea together than intercropping okra and maize because yield advantages were always higher in okra/cowpea (67% and 59% in 1990 and 1991 respectively) than in okra/maize (15% and 29%). The results were discussed in light of competitive abilities of the various components in the mixtures.

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Claims 9

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Intercropping reduced okra growth and yield relative to sole cropping.

Treatment
Intercroppinge0
Outcome
growth and yielde0
Direction
reducede0
Comparator
sole cropse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e0

“Intercropping reduced the growth and yield of okra, maize and cowpea relative to their sole crops.”

✓ located verbatim in the source · abstract, characters 267–365 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Intercropping reduced maize growth and yield relative to sole cropping.

Taxon
maizeZea mayse0
Treatment
Intercroppinge0
Outcome
growth and yielde0
Direction
reducede0
Comparator
sole cropse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

e0

“Intercropping reduced the growth and yield of okra, maize and cowpea relative to their sole crops.”

✓ located verbatim in the source · abstract, characters 267–365 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Intercropping reduced cowpea growth and yield relative to sole cropping.

Treatment
Intercroppinge0
Outcome
growth and yielde0
Direction
reducede0
Comparator
sole cropse0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Vigna unguiculata
Vigna unguiculata · TaxonHeraldDesa at English Wikipedia · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Intercropping reduced the growth and yield of okra, maize and cowpea relative to their sole crops.”

✓ located verbatim in the source · abstract, characters 267–365 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Maize depressed okra yield more than cowpea, particularly when okra followed maize by two weeks.

Treatment
maizee0
Outcome
okra yielde0
Direction
depressed moree0
Qualifier
okra was sown two weeks after maizee0
Comparator
cowpeae0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e0

“okra yield was depressed more by maize than by cowpea, especially when okra was sown two weeks after maize.”

✓ located verbatim in the source · abstract, characters 375–482 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Okra/cowpea intercropping gave a 67% yield advantage in 1990.

Outcome
yield advantagese0
Direction
highere0
Value
67%e0
Qualifier
1990e0
Comparator
okra/maizee0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Vigna unguiculata
Vigna unguiculata · TaxonHeraldDesa at English Wikipedia · CC BY-SA 3.0 · Wikimedia Commons ↗
Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e0

“yield advantages were always higher in okra/cowpea (67% and 59% in 1990 and 1991 respectively) than in okra/maize (15% and 29%).”

✓ located verbatim in the source · abstract, characters 647–775 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Okra/cowpea intercropping gave a 59% yield advantage in 1991.

Outcome
yield advantagese0
Direction
highere0
Value
59%e0
Qualifier
1991e0
Comparator
okra/maizee0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Vigna unguiculata
Vigna unguiculata · TaxonHeraldDesa at English Wikipedia · CC BY-SA 3.0 · Wikimedia Commons ↗
Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e0

“yield advantages were always higher in okra/cowpea (67% and 59% in 1990 and 1991 respectively) than in okra/maize (15% and 29%).”

✓ located verbatim in the source · abstract, characters 647–775 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Okra/maize intercropping gave a 15% yield advantage in 1990.

Outcome
yield advantagese0
Direction
highere0
Value
15%e0
Qualifier
1990e0
Comparator
okra/cowpeae0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗
Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e0

“yield advantages were always higher in okra/cowpea (67% and 59% in 1990 and 1991 respectively) than in okra/maize (15% and 29%).”

✓ located verbatim in the source · abstract, characters 647–775 · show in text ↑
t0

“Okra/Maize”

✓ located verbatim in the source · title, characters 81–91 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

Okra/maize intercropping gave a 29% yield advantage in 1991.

Outcome
yield advantagese0
Direction
highere0
Value
29%e0
Qualifier
1991e0
Comparator
okra/cowpeae0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗
Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e0

“yield advantages were always higher in okra/cowpea (67% and 59% in 1990 and 1991 respectively) than in okra/maize (15% and 29%).”

✓ located verbatim in the source · abstract, characters 647–775 · show in text ↑
t0

“Okra/Maize”

✓ located verbatim in the source · title, characters 81–91 · show in text ↑
Recommendationauthor interpretationoriginal resultpositivebasis n/a

Claim · model-written summary

The authors favor growing okra with cowpea over growing okra with maize.

Outcome
grow okra and cowpea togethere0
Comparator
intercropping okra and maizee0

Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Abelmoschus esculentus
Abelmoschus esculentus · TaxonKristine Paulus from New York, United States · CC BY 2.0 · Wikimedia Commons ↗

Verbatim

e0

“it is better to grow okra and cowpea together than intercropping okra and maize”

✓ located verbatim in the source · abstract, characters 559–638 · show in text ↑

Zea mays · yield · Abelmoschus esculentus (okra)Positive and negative results

5 papers: 2 positive, 3 negative or no effect

2 papers in the same direction as this paper · 2 in the opposite direction

  1. positive
  2. positive
  3. negative

1 paper more in this group

See all 5 papers →

intercropping · yield · Vigna unguiculata (cowpea)Results differ

103 papers: 63 positive, 40 negative or no effect

39 papers in the same direction as this paper · 63 in the opposite direction

  1. negative
  2. positive
  3. positive

99 papers more in this group

See all 103 papers →

intercropping · yield · Abelmoschus esculentus (okra)Positive and negative results

46 papers: 25 positive, 21 negative or no effect

20 papers in the same direction as this paper · 25 in the opposite direction

  1. positive
  2. positive
  3. no effect

42 papers more in this group

See all 46 papers →

intercropping · yield · Zea mays (maize)Positive and negative results

834 papers: 613 positive, 221 negative or no effect

220 papers in the same direction as this paper · 613 in the opposite direction

  1. positive
  2. negative
  3. positive

830 papers more in this group

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.