Abstract
Phosphorus is important for cowpea production and is inherently low in many tropical soils. Selection of cowpea genotypes that produce good yield under low soil P or those with high P response efficiency can be a low input approach in solving this problem. Therefore, the effect of root architecture and P application on the yield of cowpea and its P uptake were investigated. A screen house experiment was conducted at the International Institute of Tropical Agriculture (IITA) Ibadan, Nigeria. Three hundred cowpea genotypes obtained from the germplasm collection Unit of IITA were screened for number of root whorls and total number of roots using a completely randomized design with 12 replicates. Ten cowpea genotypes were further selected from the initial screening to determine the effect of three levels of P (0, 20 and 40 mg P kg-1 soil) application on their growth and nutrient uptake. The experiment was replicated three times. Phosphorus application significantly (p<0.05) enhanced shoot and root dry weight, total biomass, number of nodules, nodules dry weight, N and P uptake of the cowpea genotypes investigated. Six cowpea genotypes exhibited increases in nodules dry weight with P application. There was no significant relationship between root architecture and P uptake (r = -0.13). The N and P uptake were enhanced by the application of P in the cowpea genotypes studied. In low P soil, IT97K-414-5 was efficient in P uptake and IT92KD-267-2 was efficient in N uptake. The two genotypes may produce cowpea lines suitable in low P soils when used as breeder lines.
Abstract from the paper’s OpenAlex record; open copy licensed cc-by. 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 8
Claim · model-written summary
Phosphorus application significantly enhanced shoot and root dry weight and total biomass of cowpea genotypes.
- Taxon
- cowpea
Vigna unguiculatae0 - Treatment
- Phosphorus applicatione0
- Outcome
- shoot and root dry weight, total biomasse0
- Direction
- enhancede0
- Setting
- screen housee5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phosphorus application significantly (p<0.05) enhanced shoot and root dry weight, total biomass, number of nodules, nodules dry weight, N and P uptake of the cowpea genotypes investigated”
e5“A screen house experiment was conducted at the International Institute of Tropical Agriculture (IITA) Ibadan, Nigeria”
Claim · model-written summary
Phosphorus application significantly enhanced the number of nodules and nodules dry weight of cowpea genotypes.
- Taxon
- cowpeaVigna unguiculatae0
- Treatment
- Phosphorus applicatione0
- Outcome
- number of nodules, nodules dry weighte0
- Direction
- enhancede0
- Setting
- screen housee5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phosphorus application significantly (p<0.05) enhanced shoot and root dry weight, total biomass, number of nodules, nodules dry weight, N and P uptake of the cowpea genotypes investigated”
e5“A screen house experiment was conducted at the International Institute of Tropical Agriculture (IITA) Ibadan, Nigeria”
Claim · model-written summary
Phosphorus application significantly enhanced N and P uptake of cowpea genotypes.
- Taxon
- cowpeaVigna unguiculatae0
- Treatment
- Phosphorus applicatione0
- Outcome
- N and P uptakee0
- Direction
- enhancede0
- Setting
- screen housee5
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phosphorus application significantly (p<0.05) enhanced shoot and root dry weight, total biomass, number of nodules, nodules dry weight, N and P uptake of the cowpea genotypes investigated”
e5“A screen house experiment was conducted at the International Institute of Tropical Agriculture (IITA) Ibadan, Nigeria”
Claim · model-written summary
Six cowpea genotypes showed increases in nodules dry weight with P application.
- Taxon
- cowpeaVigna unguiculatae1
- Treatment
- P applicatione1
- Outcome
- nodules dry weighte1
- Direction
- increasese1
- Qualifier
- Six cowpea genotypese1
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e1“Six cowpea genotypes exhibited increases in nodules dry weight with P application”
Claim · model-written summary
There was no significant relationship between root architecture and P uptake in cowpea.
- Taxon
- cowpeaVigna unguiculatae0
- Organ / stage
- root architecturee2
- Outcome
- P uptakee2
- Value
- r = -0.13e2
Not reportedDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phosphorus application significantly (p<0.05) enhanced shoot and root dry weight, total biomass, number of nodules, nodules dry weight, N and P uptake of the cowpea genotypes investigated”
e2“There was no significant relationship between root architecture and P uptake (r = -0.13)”
Claim · model-written summary
Cowpea genotype IT97K-414-5 was efficient in P uptake in low P soil.
- Taxon
- cowpeaVigna unguiculatae0
- Material
- IT97K-414-5e3
- Outcome
- efficient in P uptakee3
- Qualifier
- In low P soile3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phosphorus application significantly (p<0.05) enhanced shoot and root dry weight, total biomass, number of nodules, nodules dry weight, N and P uptake of the cowpea genotypes investigated”
e3“In low P soil, IT97K-414-5 was efficient in P uptake and IT92KD-267-2 was efficient in N uptake”
Claim · model-written summary
Cowpea genotype IT92KD-267-2 was efficient in N uptake in low P soil.
- Taxon
- cowpeaVigna unguiculatae0
- Material
- IT92KD-267-2e3
- Outcome
- efficient in N uptakee3
- Qualifier
- In low P soile3
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Phosphorus application significantly (p<0.05) enhanced shoot and root dry weight, total biomass, number of nodules, nodules dry weight, N and P uptake of the cowpea genotypes investigated”
e3“In low P soil, IT97K-414-5 was efficient in P uptake and IT92KD-267-2 was efficient in N uptake”
Claim · model-written summary
The two selected genotypes may produce cowpea lines suitable in low P soils when used as breeder lines.
- Taxon
- cowpeaVigna unguiculatae4
- Outcome
- cowpea lines suitable in low P soilse4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e4“The two genotypes may produce cowpea lines suitable in low P soils when used as breeder lines”
The same questions in other papers
phosphorus · symbiosis · Vigna unguiculata (cowpea)Results differ
27 papers in the same direction as this paper · 4 in the opposite direction
- no effect
- no effect
- no effect
28 papers more in this group
See all 32 papers →phosphorus · growth · Vigna unguiculata (cowpea)Results differ
51 papers in the same direction as this paper · 4 in the opposite direction
- positive
- positive
- negative
52 papers more in this group
See all 56 papers →phosphorus · nutrient: content · Vigna unguiculata (cowpea)Positive and negative results
19 papers in the same direction as this paper · 6 in the opposite direction
- positive
- negative
- no effect
22 papers more in this group
See all 26 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.