Paper · 2012 · Journal of Agronomy

Effects of Organic and Inorganic Nutrient Sources on the Growth, Total Chlorophyll and Yield of Three Bambara Groundnut Landraces in the Coastal Region of Cameroon

O.F. Wamba; V.D. Taffouo; E. Youmbi; et al.

11
claims
22
verbatim quotes
20
citations
2
research areas
✓
Open access

Abstract

Growth and yield parameters of bambara groundnut [Vigna subterranea L. Verdc. landraces: White Seed Coat (WSC), Black Seed Coat (BSC) and Light Red Seed Coat (RSC)] were evaluated under organic and inorganic fertilization in order to determine the field performance, for the improvement of smallholder agriculture in Cameroon. Four fertilizer application rates (0, 3, 6 and 12 t ha-1) of Water Lettuce (WL) and Poultry Manure (PM) and four fertilization rates (0, 100, 150 and 200 kg ha-1) of N, P and K were used in a randomized complete block design experiment with four replications. Application of WL or PM at 12 t ha-1 significantly (p<0.001) increased leaf water content, plant dry weight and total chlorophyll content in RSC landrace. Application of PM at 12 t ha-1 increased significantly (p<0.001) the number of pods per plant, the number of seeds per pods, the 1000 grain weight, the grain yield and the pod yield in RSC landrace. Significant (p<0.001) increase in plant dry weight was observed in all landraces at 100 kg ha-1 N, P or K fertilization. The fertilization rates above 100 kg ha-1 N, P or K led to a decline in yield in all the bambara groundnut landraces compared to the optimum 100 kg ha-1 N, P or K fertilization. RSC landrace showed better growth and yield than WSC and BSC landraces revealing a greater response of this cultivar to fertilization.

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Claims 11

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

WL at 12 t ha-1 increased leaf water content, dry weight and chlorophyll in RSC.

Taxon
bambara groundnutVigna subterraneat0
Material
RSC landracee0
Treatment
WL or PM at 12 t ha-1e0
Outcome
leaf water content, plant dry weight and total chlorophyll contente0
Direction
increasede0
Value
12 t ha-1e0

Not reportedComparator

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

Vigna subterranea
Vigna subterranea · TaxonRoger Culos · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Application of WL or PM at 12 t ha-1 significantly (p<0.001) increased leaf water content, plant dry weight and total chlorophyll content in RSC landrace”

✓ located verbatim in the source · abstract, characters 587–740 · show in text ↑
t0

“bambara groundnut”

✓ located after whitespace/quote normalisation · title, characters 102–119 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

PM at 12 t ha-1 increased leaf water content, dry weight and chlorophyll in RSC.

Taxon
bambara groundnutVigna subterraneat0
Material
RSC landracee0
Treatment
WL or PM at 12 t ha-1e0
Outcome
leaf water content, plant dry weight and total chlorophyll contente0
Direction
increasede0
Value
12 t ha-1e0

Not reportedComparator

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

Vigna subterranea
Vigna subterranea · TaxonRoger Culos · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Application of WL or PM at 12 t ha-1 significantly (p<0.001) increased leaf water content, plant dry weight and total chlorophyll content in RSC landrace”

✓ located verbatim in the source · abstract, characters 587–740 · show in text ↑
t0

“bambara groundnut”

✓ located after whitespace/quote normalisation · title, characters 102–119 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

PM at 12 t ha-1 increased pod and seed counts and 1000 grain weight in RSC.

Taxon
bambara groundnutVigna subterraneat0
Material
RSC landracee0
Treatment
PM at 12 t ha-1e0
Outcome
number of pods per plant, the number of seeds per pods, the 1000 grain weighte0
Direction
increasede0

Not reportedComparator

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

Vigna subterranea
Vigna subterranea · TaxonRoger Culos · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Application of PM at 12 t ha-1 increased significantly (p<0.001) the number of pods per plant, the number of seeds per pods, the 1000 grain weight, the grain yield and the pod yield in RSC landrace”

✓ located verbatim in the source · abstract, characters 742–939 · show in text ↑
t0

“bambara groundnut”

✓ located after whitespace/quote normalisation · title, characters 102–119 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

PM at 12 t ha-1 increased grain and pod yield in RSC.

Taxon
bambara groundnutVigna subterraneat0
Material
RSC landracee0
Treatment
PM at 12 t ha-1e0
Outcome
grain yield and the pod yielde0
Direction
increasede0

Not reportedComparator

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

Vigna subterranea
Vigna subterranea · TaxonRoger Culos · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Application of PM at 12 t ha-1 increased significantly (p<0.001) the number of pods per plant, the number of seeds per pods, the 1000 grain weight, the grain yield and the pod yield in RSC landrace”

✓ located verbatim in the source · abstract, characters 742–939 · show in text ↑
t0

“bambara groundnut”

✓ located after whitespace/quote normalisation · title, characters 102–119 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

N fertilization at 100 kg ha-1 increased plant dry weight in all landraces.

Taxon
bambara groundnutVigna subterraneat0
Treatment
100 kg ha-1 N, P or K fertilizatione0
Outcome
plant dry weighte0
Direction
increasee0
Qualifier
all landracese0

Not reportedComparator

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

Vigna subterranea
Vigna subterranea · TaxonRoger Culos · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Significant (p<0.001) increase in plant dry weight was observed in all landraces at 100 kg ha-1 N, P or K fertilization”

✓ located verbatim in the source · abstract, characters 941–1060 · show in text ↑
t0

“bambara groundnut”

✓ located after whitespace/quote normalisation · title, characters 102–119 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

P fertilization at 100 kg ha-1 increased plant dry weight in all landraces.

Taxon
bambara groundnutVigna subterraneat0
Treatment
100 kg ha-1 N, P or K fertilizatione0
Outcome
plant dry weighte0
Direction
increasee0
Qualifier
all landracese0

Not reportedComparator

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

Vigna subterranea
Vigna subterranea · TaxonRoger Culos · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Significant (p<0.001) increase in plant dry weight was observed in all landraces at 100 kg ha-1 N, P or K fertilization”

✓ located verbatim in the source · abstract, characters 941–1060 · show in text ↑
t0

“bambara groundnut”

✓ located after whitespace/quote normalisation · title, characters 102–119 · show in text ↑
Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

K fertilization at 100 kg ha-1 increased plant dry weight in all landraces.

Taxon
bambara groundnutVigna subterraneat0
Treatment
100 kg ha-1 N, P or K fertilizatione0
Outcome
plant dry weighte0
Direction
increasee0
Qualifier
all landracese0

Not reportedComparator

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

Vigna subterranea
Vigna subterranea · TaxonRoger Culos · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Significant (p<0.001) increase in plant dry weight was observed in all landraces at 100 kg ha-1 N, P or K fertilization”

✓ located verbatim in the source · abstract, characters 941–1060 · show in text ↑
t0

“bambara groundnut”

✓ located after whitespace/quote normalisation · title, characters 102–119 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

N rates above 100 kg ha-1 lowered yield relative to 100 kg ha-1.

Taxon
bambara groundnutVigna subterraneat0
Treatment
rates above 100 kg ha-1 N, P or Ke0
Outcome
yielde0
Direction
declinee0
Comparator
optimum 100 kg ha-1 N, P or K fertilizatione0

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

Vigna subterranea
Vigna subterranea · TaxonRoger Culos · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The fertilization rates above 100 kg ha-1 N, P or K led to a decline in yield in all the bambara groundnut landraces compared to the optimum 100 kg ha-1 N, P or K fertilization”

✓ located verbatim in the source · abstract, characters 1062–1238 · show in text ↑
t0

“bambara groundnut”

✓ located after whitespace/quote normalisation · title, characters 102–119 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

P rates above 100 kg ha-1 lowered yield relative to 100 kg ha-1.

Taxon
bambara groundnutVigna subterraneat0
Treatment
rates above 100 kg ha-1 N, P or Ke0
Outcome
yielde0
Direction
declinee0
Comparator
optimum 100 kg ha-1 N, P or K fertilizatione0

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

Vigna subterranea
Vigna subterranea · TaxonRoger Culos · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The fertilization rates above 100 kg ha-1 N, P or K led to a decline in yield in all the bambara groundnut landraces compared to the optimum 100 kg ha-1 N, P or K fertilization”

✓ located verbatim in the source · abstract, characters 1062–1238 · show in text ↑
t0

“bambara groundnut”

✓ located after whitespace/quote normalisation · title, characters 102–119 · show in text ↑
Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

K rates above 100 kg ha-1 lowered yield relative to 100 kg ha-1.

Taxon
bambara groundnutVigna subterraneat0
Treatment
rates above 100 kg ha-1 N, P or Ke0
Outcome
yielde0
Direction
declinee0
Comparator
optimum 100 kg ha-1 N, P or K fertilizatione0

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

Vigna subterranea
Vigna subterranea · TaxonRoger Culos · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“The fertilization rates above 100 kg ha-1 N, P or K led to a decline in yield in all the bambara groundnut landraces compared to the optimum 100 kg ha-1 N, P or K fertilization”

✓ located verbatim in the source · abstract, characters 1062–1238 · show in text ↑
t0

“bambara groundnut”

✓ located after whitespace/quote normalisation · title, characters 102–119 · show in text ↑
Observationobservedoriginal resultpositivemeasured

Claim · model-written summary

RSC had better growth and yield than WSC and BSC under fertilization.

Taxon
bambara groundnutVigna subterraneat0
Material
RSC landracee0
Outcome
growth and yielde0
Direction
bettere0
Comparator
WSC and BSC landracese0

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

Vigna subterranea
Vigna subterranea · TaxonRoger Culos · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“RSC landrace showed better growth and yield than WSC and BSC landraces”

✓ located verbatim in the source · abstract, characters 1240–1310 · show in text ↑
t0

“bambara groundnut”

✓ located after whitespace/quote normalisation · title, characters 102–119 · show in text ↑

phosphorus · yield · Vigna subterranea (Bambara groundnut)Positive and negative results

8 papers: 6 positive, 2 negative or no effect

1 paper in the same direction as this paper · 6 in the opposite direction

  1. positive
  2. positive
  3. positive

4 papers more in this group

See all 8 papers →

nitrogen · yield · Vigna subterranea (Bambara groundnut)Positive and negative results

11 papers: 6 positive, 5 negative or no effect

4 papers in the same direction as this paper · 6 in the opposite direction

  1. positive
  2. no effect
  3. no effect

7 papers more in this group

See all 11 papers →

nitrogen · growth · Vigna subterranea (Bambara groundnut)Results agree

5 papers: 5 positive, 0 negative or no effect

4 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

1 paper more in this group

See all 5 papers →

fertilization · growth · Vigna subterranea (Bambara groundnut)Results agree

5 papers: 5 positive, 0 negative or no effect

4 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

1 paper more in this group

See all 5 papers →

phosphorus · growth · Vigna subterranea (Bambara groundnut)Results agree

7 papers: 7 positive, 0 negative or no effect

6 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

3 papers more in this group

See all 7 papers →

fertilization · yield · Vigna subterranea (Bambara groundnut)Results agree

8 papers: 8 positive, 0 negative or no effect

7 papers in the same direction as this paper

  1. positive
  2. positive
  3. positive

4 papers more in this group

See all 8 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.