Paper · 2001 · Open Access Repository of ICRISAT (International Crops Research Institute for the Semi-Arid Tropics)

Maize and Pigeonpea Intercropping Systems in Mpumalanga, South Africa

C. Mathews; R. B. Jones; K. B. Saxena

8
claims
20
verbatim quotes
7
citations
1
research areas
✓
Open access

Abstract

A study was conducted in South Africa during the 1998-99 season to evaluate the performance of pigeon pea cultivars, with varying maturity periods, with maize in 2 intercropping systems (alley planting and same row planting systems). Short-duration (SD) maize composite EWF-2 was intercropped with SD pigeonpea cultivars ICPL 87091 and ICPL 87105 in one trial, and with medium-duration (MD) and long-duration (LD) cultivars ICP 6927 and ICEAP 00040, respectively, in a second trial. Yields of both crops in intercropping systems were generally lower than in monocropping systems. The yield reduction in intercropping systems for LD and MD pigeon pea cultivars was in the range 7.4-31.0%, while that of maize ranged from 8.7 to 38.6%. In the SD trial, yield reduction was in the range 36.8-66.3% in pigeonpea and 12.9-41.9% in maize. Significant yield reduction was observed under alley intercropping for LD and MD cultivars. Average land equivalent ratio was the same (1.24) in both systems in the SD trial, while LER in the LD-MD trial was 1.37 under alley intercropping and 1.77 under same row intercropping.

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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 8

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

pigeonpea yield declined under intercropping relative to monocropping in the LD-MD trial.

Taxon
pigeonpeaCajanus cajant0e0
Treatment
intercropping systemst0e0e1
Outcome
yield reductione0
Direction
reductione0
Value
7.4-31.0%e0
Comparator
monocropping systemse1
Setting
South Africat0

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

Cajanus cajan
Cajanus cajan · TaxonFilo gèn' · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Maize and Pigeonpea Intercropping Systems in Mpumalanga, South Africa”

✓ located verbatim in the source · title, characters 0–69 · show in text ↑
e0

“The yield reduction in intercropping systems for LD and MD pigeon pea cultivars was in the range 7.4-31.0%, while that of maize ranged from 8.7 to 38.6%.”

✓ located verbatim in the source · abstract, characters 580–733 · show in text ↑
e1

“Yields of both crops in intercropping systems were generally lower than in monocropping systems.”

✓ located verbatim in the source · abstract, characters 483–579 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

maize yield declined under intercropping relative to monocropping in the LD-MD trial.

Taxon
maizeZea mayst0e0
Treatment
intercropping systemst0e0e1
Outcome
yield reductione0
Direction
reductione0
Value
8.7 to 38.6%e0
Comparator
monocropping systemse1
Setting
South Africat0

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

t0

“Maize and Pigeonpea Intercropping Systems in Mpumalanga, South Africa”

✓ located verbatim in the source · title, characters 0–69 · show in text ↑
e0

“The yield reduction in intercropping systems for LD and MD pigeon pea cultivars was in the range 7.4-31.0%, while that of maize ranged from 8.7 to 38.6%.”

✓ located verbatim in the source · abstract, characters 580–733 · show in text ↑
e1

“Yields of both crops in intercropping systems were generally lower than in monocropping systems.”

✓ located verbatim in the source · abstract, characters 483–579 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

pigeonpea yield declined under intercropping relative to monocropping in the SD trial.

Taxon
pigeonpeaCajanus cajant0e0
Treatment
intercropping systemst0e0e1
Outcome
yield reductione0
Direction
reductione0
Value
36.8-66.3%e0
Comparator
monocropping systemse1
Setting
South Africat0

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

Cajanus cajan
Cajanus cajan · TaxonFilo gèn' · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Maize and Pigeonpea Intercropping Systems in Mpumalanga, South Africa”

✓ located verbatim in the source · title, characters 0–69 · show in text ↑
e0

“In the SD trial, yield reduction was in the range 36.8-66.3% in pigeonpea and 12.9-41.9% in maize.”

✓ located verbatim in the source · abstract, characters 734–832 · show in text ↑
e1

“Yields of both crops in intercropping systems were generally lower than in monocropping systems.”

✓ located verbatim in the source · abstract, characters 483–579 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

maize yield declined under intercropping relative to monocropping in the SD trial.

Taxon
maizeZea mayst0e0
Treatment
intercropping systemst0e0e1
Outcome
yield reductione0
Direction
reductione0
Value
12.9-41.9%e0
Comparator
monocropping systemse1
Setting
South Africat0

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

t0

“Maize and Pigeonpea Intercropping Systems in Mpumalanga, South Africa”

✓ located verbatim in the source · title, characters 0–69 · show in text ↑
e0

“In the SD trial, yield reduction was in the range 36.8-66.3% in pigeonpea and 12.9-41.9% in maize.”

✓ located verbatim in the source · abstract, characters 734–832 · show in text ↑
e1

“Yields of both crops in intercropping systems were generally lower than in monocropping systems.”

✓ located verbatim in the source · abstract, characters 483–579 · show in text ↑
Intervention effectobservedoriginal resultnegativesignificant (as stated)measured

Claim · model-written summary

Alley intercropping significantly reduced yield of long and medium duration pigeonpea cultivars.

Taxon
PigeonpeaCajanus cajant0
Material
LD and MD cultivarse0
Treatment
alley intercroppinge0
Outcome
yielde0
Direction
reductione0

Not reportedComparator

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

Cajanus cajan
Cajanus cajan · TaxonFilo gèn' · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Pigeonpea”

✓ located verbatim in the source · title, characters 10–19 · show in text ↑
e0

“Significant yield reduction was observed under alley intercropping for LD and MD cultivars.”

✓ located verbatim in the source · abstract, characters 833–924 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Average land equivalent ratio was 1.24 in both systems in the short duration trial.

Taxon
Maize and PigeonpeaCajanus cajanZea mayst0
Outcome
land equivalent ratioe0
Direction
the samee0
Value
1.24e0

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

Cajanus cajan
Cajanus cajan · TaxonFilo gèn' · CC BY-SA 4.0 · Wikimedia Commons ↗
Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Maize and Pigeonpea”

✓ located verbatim in the source · title, characters 0–19 · show in text ↑
e0

“Average land equivalent ratio was the same (1.24) in both systems in the SD trial”

✓ located verbatim in the source · abstract, characters 925–1006 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Land equivalent ratio was 1.37 under alley intercropping in the long and medium duration trial.

Taxon
Maize and PigeonpeaCajanus cajanZea mayst0
Treatment
alley intercroppinge0
Outcome
LERe0
Value
1.37e0

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

Cajanus cajan
Cajanus cajan · TaxonFilo gèn' · CC BY-SA 4.0 · Wikimedia Commons ↗
Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Maize and Pigeonpea”

✓ located verbatim in the source · title, characters 0–19 · show in text ↑
e0

“LER in the LD-MD trial was 1.37 under alley intercropping and 1.77 under same row intercropping”

✓ located verbatim in the source · abstract, characters 1014–1109 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Land equivalent ratio was 1.77 under same row intercropping in the long and medium duration trial.

Taxon
Maize and PigeonpeaCajanus cajanZea mayst0
Treatment
same row intercroppinge0
Outcome
LERe0
Value
1.77e0

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

Cajanus cajan
Cajanus cajan · TaxonFilo gèn' · CC BY-SA 4.0 · Wikimedia Commons ↗
Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Maize and Pigeonpea”

✓ located verbatim in the source · title, characters 0–19 · show in text ↑
e0

“LER in the LD-MD trial was 1.37 under alley intercropping and 1.77 under same row intercropping”

✓ located verbatim in the source · abstract, characters 1014–1109 · show in text ↑

intercropping · yield · Cajanus cajan (pigeon pea)Results differ

117 papers: 94 positive, 23 negative or no effect

22 papers in the same direction as this paper · 94 in the opposite direction

  1. positive
  2. positive
  3. positive

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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. positive
  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.