Intervention effectmodel-written summary

Phosphorus at 40 kg/ha gave maximum green pod weight.

A claim from Response of Different Phosphorus Levels on Growth and Yield of Different Vegetable Cowpea [Vigna unguiculata (L.) Walp] Under Semi-arid Conditions of Rajasthan, India · 2026

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Taxon: CowpeaVigna unguiculatae2
Treatment: phosphorus @ 40 kg/hae1
Outcome: green pod weighte0
Direction: maximume3
Value: 54.01 ge0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingQualifier

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

*Vigna unguiculata* · TaxonHeraldDesa at English Wikipedia · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0
“green pod weight (54.01 g)”
✓ located verbatim in the source · abstract, characters 883–909

e1
“phosphorus @ 40 kg/ha”
✓ located verbatim in the source · abstract, characters 1007–1028

e2
“Cowpea [Vigna unguiculata (L.) Walp.]”
✓ located verbatim in the source · abstract, characters 0–37

e3
“The maximum growth and yield attributes”
✓ located verbatim in the source · abstract, characters 614–653

Title

Response of Different Phosphorus Levels on Growth and Yield of Different Vegetable Cowpea [Vigna unguiculata (L.) Walp] Under Semi-arid Conditions of Rajasthan, India

Pooja Verma; S. K. Bairwa; D. K. Yadav; et al. Asian Journal of Soil Science and Plant Nutrition 2026. doi:10.9734/ajsspn/2026/v12i2696

Other claims from this paper (19)

Intervention effect Phosphorus at 40 kg/ha gave maximum plant height and leaf area, statistically at par with 60 kg/ha.
Intervention effect Phosphorus at 40 kg/ha gave maximum branches per plant.
Intervention effect Phosphorus at 40 kg/ha gave maximum leaf area.
Intervention effect Phosphorus at 40 kg/ha gave maximum chlorophyll content.
Intervention effect Phosphorus at 40 kg/ha gave maximum green pod length.
Intervention effect Phosphorus at 40 kg/ha gave maximum green pods per plant.
Intervention effect Phosphorus at 40 kg/ha gave maximum green pod yield per plant.
Intervention effect Phosphorus at 40 kg/ha gave maximum green pod yield per hectare.
Observation Kashi Kanchan had maximum plant height.
Observation Kashi Kanchan had maximum leaf area.
Observation Kashi Kanchan had maximum chlorophyll content.
Observation Kashi Kanchan had maximum green pod length.
Observation Kashi Kanchan had maximum green pod weight.
Observation Kashi Kanchan had maximum green pod yield per plant.
Observation Kashi Kanchan had maximum green pod yield per hectare.
Observation RCV 07 had maximum branches and pods per plant.
Association Phosphorus levels and varieties interacted significantly for green pod length and yield.
Intervention effect Phosphorus 40 kg/ha with Kashi Kanchan significantly improved green pod length and yield per plant.
Intervention effect Phosphorus 40 kg/ha with Kashi Kanchan significantly improved green pod yield per hectare.

Record rev-d5f0791050862d383f639e40ab8e76abef656788cf127cd0b3b9eac9440585a7 · schema claims-v0.9 · position 7 in the model’s answer

phosphorus · yield · Vigna unguiculata (cowpea)Results differ

113 papers: 107 positive, 6 negative or no effect

106 papers in the same direction as this claim · 5 in the opposite direction · 1 reporting no difference from an alternative

no effect
Potassium and phosphorus rates showed no interaction effect on grain yield.
Liming, fertilization, and rhizobia inoculation on cowpea yield in a Brazilian Amazon upland forest environment · 2021
Opposite direction
no effect
Phosphorus level had no significant effect on stem girth, plant height or 100 seed weight.
Effect of different phosphorus levels on four cowpea (Vigna unguiculata Walp L.) varieties for grain and fodder yield in Upper East Region of Ghana · 2019
Opposite direction
negative
Cowpea yield with P was 0.01 Mg/ha, against 0.13 Mg/ha without P, as written.
Crop Response to Lime and Phosphorus on New Bench Terraces in the Tropics · 1990 · compared with no‐P
Opposite direction
no effect
Phosphorus fertilizer and row spacing did not significantly influence grain number per pod.
Responses of Cowpea to Phosphorous Application Rates and Row Spacing in the Sudan Savanna Zone of Nigeria · 2020
Opposite direction
no effect
Phosphorus application had no significant effect on crop yield.
Effect of density of acacia and phosphorus fertilization on yield and water expense efficiency of rainfed cowpea in arid environment · 2005
Opposite direction
no effect
Calcined Burkina phosphate rock (CPR) showed no superiority over non-calcined Burkina phosphate rock (BPR) for grain production.
Effect of calcined/non-calcined phosphate rock application on crop yield and phosphorus availability to replace commercial fertilizer on a lixisol in Burkina Faso · 2025 · compared with BPR
No difference from an alternative
positive
Phosphorus alone consistently increased cowpea grain yield across locations.
Growth and Yield Responses of Cowpea to Inoculation and Phosphorus Fertilization in Different Environments · 2017
Same direction
positive
Applied phosphorus significantly improved pods per plant in cowpea, with the highest response at 60 kg.P.ha–1.
Influence of phosphorus on the performance of cowpea (Vigna unguiculata (L) Walp.) varieties in the Sudan savanna of Nigeria · 2011
Same direction

104 papers more in this group

See all 113 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.

Other papers on the same question

phosphorus · yield · Vigna unguiculata (cowpea)Results differ