Abstract
The identification of cowpea varieties that can thrive in P-limited soils and optimal spacing has not yet been addressed in Tanzania. This study evaluated the recently released three cowpea varieties for growth parameters and high yield in different P levels and spacing. Field experiments were conducted over two consecutive rainy seasons, i.e. 2023 and 2024, to assess the effects of P, plant spacing, and variety on growth and yield performance. The experiment was laid out in triplicate under RCBD. The results revealed that P did not significantly affect growth parameters. However, the variety (Vuli-AR2) exhibited a considerable increase in growth and yield performance, even at low P levels, suggesting that its genetic potential traits contribute to higher P-use efficiency. The interaction [P40 kg/ha × (0.4 × 0.2 m) × Vuli-AR2] revealed a significant increase in yield per ha in the 2023 and 2024 seasons, with an average yield of 323.06 ± 12.30 and 376.04 ± 16.15 kg/ha, respectively. Moreover, the interaction [P40kg/ha × (0.4 × 0.2 m) × Vuli-AR2] revealed significantly (p = 0.001) high pod length and seeds per pod in both seasons. The variety Vuli-AR2 demonstrated high agronomic performance under low P levels. Upscaling Vuli-AR2 will maximize cowpea production even under marginal soils.
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Claims 7
Claim · model-written summary
Phosphorus did not significantly affect cowpea growth parameters.
- Taxon
- cowpea
Vigna unguiculatae5 - Treatment
- Pe0
- Outcome
- growth parameterse0
- Direction
- did not significantly affecte0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Upscaling Vuli-AR2 will maximize cowpea production even under marginal soils”
e0“P did not significantly affect growth parameters”
Claim · model-written summary
Variety Vuli-AR2 showed a considerable increase in cowpea growth and yield performance, even at low P levels.
- Taxon
- cowpeaVigna unguiculatae5
- Material
- Vuli-AR2e1
- Outcome
- growth and yield performancee1
- Direction
- increasee1
- Qualifier
- even at low P levelse1
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Upscaling Vuli-AR2 will maximize cowpea production even under marginal soils”
e1“the variety (Vuli-AR2) exhibited a considerable increase in growth and yield performance, even at low P levels”
Claim · model-written summary
The interaction of P40 kg/ha, 0.4 × 0.2 m spacing and Vuli-AR2 significantly increased cowpea yield per ha in 2023, with an average yield of 323.06 ± 12.30 kg/ha.
- Taxon
- cowpeaVigna unguiculatae5
- Material
- Vuli-AR2e2
- Treatment
- P40 kg/ha × (0.4 × 0.2 m)e2
- Outcome
- yield per hae2
- Direction
- increasee2
- Value
- 323.06 ± 12.30e2
- Qualifier
- 2023e2
- Setting
- Tanzaniat0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Upscaling Vuli-AR2 will maximize cowpea production even under marginal soils”
e2“The interaction [P40 kg/ha × (0.4 × 0.2 m) × Vuli-AR2] revealed a significant increase in yield per ha in the 2023 and 2024 seasons, with an average yield of 323.06 ± 12.30 and 376.04 ± 16.15 kg/ha, respectively”
t0“in Tanzania”
Claim · model-written summary
The interaction of P40 kg/ha, 0.4 × 0.2 m spacing and Vuli-AR2 significantly increased cowpea yield per ha in 2024, with an average yield of 376.04 ± 16.15 kg/ha.
- Taxon
- cowpeaVigna unguiculatae5
- Material
- Vuli-AR2e2
- Treatment
- P40 kg/ha × (0.4 × 0.2 m)e2
- Outcome
- yield per hae2
- Direction
- increasee2
- Value
- 376.04 ± 16.15e2
- Qualifier
- 2024e2
- Setting
- Tanzaniat0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Upscaling Vuli-AR2 will maximize cowpea production even under marginal soils”
e2“The interaction [P40 kg/ha × (0.4 × 0.2 m) × Vuli-AR2] revealed a significant increase in yield per ha in the 2023 and 2024 seasons, with an average yield of 323.06 ± 12.30 and 376.04 ± 16.15 kg/ha, respectively”
t0“in Tanzania”
Claim · model-written summary
The interaction of P40 kg/ha, 0.4 × 0.2 m spacing and Vuli-AR2 gave significantly high pod length and seeds per pod in both seasons.
- Taxon
- cowpeaVigna unguiculatae5
- Material
- Vuli-AR2e3
- Treatment
- P40kg/ha × (0.4 × 0.2 m)e3
- Outcome
- pod length and seeds per pode3
- Direction
- higherinferrede3
- Qualifier
- p = 0.001e3
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Upscaling Vuli-AR2 will maximize cowpea production even under marginal soils”
e3“the interaction [P40kg/ha × (0.4 × 0.2 m) × Vuli-AR2] revealed significantly (p = 0.001) high pod length and seeds per pod in both seasons”
Claim · model-written summary
Variety Vuli-AR2 demonstrated high agronomic performance under low P levels.
- Taxon
- cowpeaVigna unguiculatae5
- Material
- Vuli-AR2e4
- Treatment
- low P levelse4
- Outcome
- agronomic performancee4
- Direction
- higherinferrede4
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Upscaling Vuli-AR2 will maximize cowpea production even under marginal soils”
e4“The variety Vuli-AR2 demonstrated high agronomic performance under low P levels”
Claim · model-written summary
Upscaling Vuli-AR2 is recommended to maximize cowpea production even under marginal soils.
- Taxon
- cowpeaVigna unguiculatae5
- Material
- Vuli-AR2e5
- Outcome
- cowpea productione5
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e5“Upscaling Vuli-AR2 will maximize cowpea production even under marginal soils”
The same questions in other papers
phosphorus · growth · Vigna unguiculata (cowpea)Results differ
3 papers in the same direction as this paper · 52 in the opposite direction
- positive
- positive
- positive
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See all 56 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.