Paper · 1982 · Communications in Soil Science and Plant Analysis

Effects of nitrogen, molybdenum and cultivar on cowpea growth and yield on an oxisol

E. R. Rhodes; M. Kpaka

7
claims
10
verbatim quotes
13
citations
2
research areas
—
Not open access

Abstract

Abstract Small amount of N increased dry matter and pod weight but not seed yield of local and improved cowpea. Mo increased leaf N content, dry matter, pod weight and seed yield. Pelleting seeds with nitramolybdenum at 0.4g/100g seed resulted in seed yield of 1.39 tons/ha corresponding to a 21% increase over the control. Averaged over all treatments local cowpea yielded 1.19 tons/ha and improved cowpea 1.28 tons/ha on the oxisol. These yields were however not significantly different.

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Claims 7

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Small N amounts increased cowpea dry matter and pod weight.

Material
local and improved cowpeae0
Treatment
Small amount of Ne0
Outcome
dry matter and pod weighte0
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

“Small amount of N increased dry matter and pod weight but not seed yield of local and improved cowpea.”

✓ located verbatim in the source · abstract, characters 9–111 · show in text ↑
Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Small N amounts did not increase seed yield of either cowpea cultivar.

Material
local and improved cowpeae0
Treatment
Small amount of Ne0
Outcome
seed yielde0
Direction
note0

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

“Small amount of N increased dry matter and pod weight but not seed yield of local and improved cowpea.”

✓ located verbatim in the source · abstract, characters 9–111 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Mo increased cowpea leaf N content.

Treatment
Moe0
Outcome
leaf N contente0
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

“Mo increased leaf N content, dry matter, pod weight and seed yield.”

✓ located verbatim in the source · abstract, characters 112–179 · show in text ↑
t0

“cowpea”

✓ located verbatim in the source · title, characters 48–54 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Mo increased cowpea dry matter, pod weight and seed yield.

Treatment
Moe0
Outcome
dry matter, pod weight and seed yielde0
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

“Mo increased leaf N content, dry matter, pod weight and seed yield.”

✓ located verbatim in the source · abstract, characters 112–179 · show in text ↑
t0

“cowpea”

✓ located verbatim in the source · title, characters 48–54 · show in text ↑
Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Nitramolybdenum pelleting produced 1.39 tons/ha seed yield, 21% above control.

Treatment
Pelleting seeds with nitramolybdenum at 0.4g/100g seede0
Outcome
seed yielde0
Direction
increasee0
Value
1.39 tons/hae0
Qualifier
21% increasee0
Comparator
controle0

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

“Pelleting seeds with nitramolybdenum at 0.4g/100g seed resulted in seed yield of 1.39 tons/ha corresponding to a 21% increase over the control.”

✓ located verbatim in the source · abstract, characters 180–323 · show in text ↑
t0

“cowpea”

✓ located verbatim in the source · title, characters 48–54 · show in text ↑
Observationobservedoriginal resultmeasured

Claim · model-written summary

Local cowpea averaged 1.19 tons/ha.

Material
local cowpeae0
Outcome
yieldede0
Value
1.19 tons/hae0
Setting
oxisole0

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

“Averaged over all treatments local cowpea yielded 1.19 tons/ha and improved cowpea 1.28 tons/ha on the oxisol.”

✓ located verbatim in the source · abstract, characters 324–434 · show in text ↑
Observationobservedoriginal resultnot significant (as stated)measured

Claim · model-written summary

Improved cowpea averaged 1.28 tons/ha; cultivar yields were not significantly different.

Material
improved cowpeae0
Outcome
yieldede0
Value
1.28 tons/hae0
Qualifier
not significantly differente0
Setting
oxisole0

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

“Averaged over all treatments local cowpea yielded 1.19 tons/ha and improved cowpea 1.28 tons/ha on the oxisol. These yields were however not significantly different.”

✓ located verbatim in the source · abstract, characters 324–489 · show in text ↑

molybdenum atom · yield · Vigna unguiculata (cowpea)Results differ

17 papers: 16 positive, 1 negative or no effect

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

  1. positive
  2. no effect
  3. positive

13 papers more in this group

See all 17 papers →

molybdenum atom · nutrient: content · Vigna unguiculata (cowpea)Results agree

6 papers: 6 positive, 0 negative or no effect

5 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

2 papers more in this group

See all 6 papers →

seed treatment · yield · Vigna unguiculata (cowpea)Results differ

29 papers: 27 positive, 2 negative or no effect

26 papers in the same direction as this paper · 1 in the opposite direction · 1 reporting no difference from an alternative

  1. no effect
  2. no effect
  3. positive

25 papers more in this group

See all 29 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.