Paper · 2010 · AUSTRALIAN JOURNAL OF BASIC AND APPLIED SCIENCES

Effect of plant density and cultivar on growth and yield of cowpea (vigna unguiculata l.walp)

Ahmed M. El Naim; Abdelrhim A. Jabereldar

10
claims
20
verbatim quotes
60
citations
1
research areas
—
Not open access

Abstract

A field experiment was conducted for two successive rainy seasons (2007/08-2008/09) in Kazgail area, in North Kordofan State, Sudan, to examine the effect of plant density and cultivar on growth and yield of cowpea. The three cultivars of cowpea (Buff, Haydoob and Eien Elgazal) were sown in four plant densities of 30,000, 60,000, 90,000 and 120,000 plants ha -1 . The experiment was laid out in a randomized complete block design (RCBD) in three replications. The results showed that, plant density had a significant effect on most of the growth attributes measured. Increasing plant population increased plant height and decreased number of leaves per plant and leaf area index (LAI). Increased plant density significantly increased seed yield per unit area, however the number of pods per plant, 100-seed weight, seed yield per plant and harvest index reduced with increased plant density. The local cultivar (buff) had a significantly taller, greater number of leaves per plant, leaf area index, heavier 100-seed weight, greater seed yield per plant, greater final seed yield (t/ha) and late in maturity. The improved cultivar (Ein Elgazal) scored the highest values of harvest index.

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 10

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Plant density significantly affected most growth attributes.

Treatment
plant densitye0
Outcome
growth attributese0

Not reportedComparatorDirection

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

“plant density had a significant effect on most of the growth attributes measured.”

✓ located verbatim in the source · abstract, characters 487–568 · show in text ↑
t0

“cowpea”

✓ located verbatim in the source · title, characters 60–66 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Higher plant population increased plant height.

Treatment
Increasing plant populatione0
Outcome
plant heighte0
Direction
increasede0

Not reportedComparator

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

“Increasing plant population increased plant height and decreased number of leaves per plant and leaf area index (LAI).”

✓ located verbatim in the source · abstract, characters 569–687 · show in text ↑
t0

“cowpea”

✓ located verbatim in the source · title, characters 60–66 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Higher plant population decreased leaf number and leaf area index.

Treatment
Increasing plant populatione0
Outcome
number of leaves per plant and leaf area index (LAI)e0
Direction
decreasede0

Not reportedComparator

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

“Increasing plant population increased plant height and decreased number of leaves per plant and leaf area index (LAI).”

✓ located verbatim in the source · abstract, characters 569–687 · show in text ↑
t0

“cowpea”

✓ located verbatim in the source · title, characters 60–66 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Higher density significantly increased seed yield per unit area.

Treatment
Increased plant densitye0
Outcome
seed yield per unit areae0
Direction
increasede0

Not reportedComparator

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

“Increased plant density significantly increased seed yield per unit area”

✓ located verbatim in the source · abstract, characters 688–760 · show in text ↑
t0

“cowpea”

✓ located verbatim in the source · title, characters 60–66 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Higher density reduced pod number and 100-seed weight.

Treatment
increased plant densitye0
Outcome
number of pods per plant, 100-seed weighte0
Direction
reducede0

Not reportedComparator

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

“the number of pods per plant, 100-seed weight, seed yield per plant and harvest index reduced with increased plant density.”

✓ located verbatim in the source · abstract, characters 770–893 · show in text ↑
t0

“cowpea”

✓ located verbatim in the source · title, characters 60–66 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Higher density reduced seed yield per plant and harvest index.

Treatment
increased plant densitye0
Outcome
seed yield per plant and harvest indexe0
Direction
reducede0

Not reportedComparator

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

“the number of pods per plant, 100-seed weight, seed yield per plant and harvest index reduced with increased plant density.”

✓ located verbatim in the source · abstract, characters 770–893 · show in text ↑
t0

“cowpea”

✓ located verbatim in the source · title, characters 60–66 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Buff had greater height, leaf number and leaf area index.

Treatment
buffe0
Outcome
taller, greater number of leaves per plant, leaf area indexe0
Direction
greatere0

Not reportedComparator

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

“The local cultivar (buff) had a significantly taller, greater number of leaves per plant, leaf area index, heavier 100-seed weight, greater seed yield per plant, greater final seed yield (t/ha) and late in maturity.”

✓ located verbatim in the source · abstract, characters 894–1109 · show in text ↑
t0

“cowpea”

✓ located verbatim in the source · title, characters 60–66 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Buff had heavier 100-seed weight and greater per-plant and final seed yield.

Treatment
buffe0
Outcome
100-seed weight, greater seed yield per plant, greater final seed yield (t/ha)e0
Direction
greatere0

Not reportedComparator

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

“The local cultivar (buff) had a significantly taller, greater number of leaves per plant, leaf area index, heavier 100-seed weight, greater seed yield per plant, greater final seed yield (t/ha) and late in maturity.”

✓ located verbatim in the source · abstract, characters 894–1109 · show in text ↑
t0

“cowpea”

✓ located verbatim in the source · title, characters 60–66 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Buff matured later.

Treatment
buffe0
Outcome
maturitye0
Direction
latee0

Not reportedComparator

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

“The local cultivar (buff) had a significantly taller, greater number of leaves per plant, leaf area index, heavier 100-seed weight, greater seed yield per plant, greater final seed yield (t/ha) and late in maturity.”

✓ located verbatim in the source · abstract, characters 894–1109 · show in text ↑
t0

“cowpea”

✓ located verbatim in the source · title, characters 60–66 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Ein Elgazal had the highest harvest index.

Treatment
Ein Elgazale0
Outcome
harvest indexe0
Direction
higheste0

Not reportedComparator

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

“The improved cultivar (Ein Elgazal) scored the highest values of harvest index.”

✓ located verbatim in the source · abstract, characters 1110–1189 · show in text ↑
t0

“cowpea”

✓ located verbatim in the source · title, characters 60–66 · show in text ↑

density · growth · Vigna unguiculata (cowpea)Positive and negative results

15 papers: 14 positive, 1 negative or no effect

13 papers in the same direction as this paper · 1 in the opposite direction

  1. negative
  2. positive
  3. positive

11 papers more in this group

See all 15 papers →

density · yield · Vigna unguiculata (cowpea)Positive and negative results

63 papers: 50 positive, 13 negative or no effect

49 papers in the same direction as this paper · 13 in the opposite direction

  1. no effect
  2. no effect
  3. no effect

59 papers more in this group

See all 63 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.