Intervention effectmodel-written summary

Foliar urea plus urea phosphate gave significantly higher potassium (56 kg/ha).

A claim from Effect of Foliar Nutrition on Yield, Quality, Nutrient Content and Uptake of Kharif Cowpea · 2023

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Foliar urea plus urea phosphate gave significantly higher potassium (56 kg/ha).

Taxon
cowpea cropVigna unguiculatae0
Treatment
75% of RDF + 2% spray of each urea and urea phosphate at 15 and 30 DASe0
Outcome
potassiume0
Direction
highere0
Value
56 kg/hae0
Comparator
75% of RDF + 2% spray of NPK 19:19:19 at 15 and 30 DASe0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingQualifier

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

“Application of 75% of RDF + 2% spray of each urea and urea phosphate at 15 and 30 DAS gave significantly higher yield (1422 kg/ha), protein content (22.93 %), nutrient content of nitrogen and phosphorus in seed (3.67 % and 0.446 %) and in stover (0.73% and 0.273% respectively) and nutrients uptake of nitrogen (71 kg/ha), phosphorus (13 kg/ha) and potassium (56 kg/ha) by cowpea crop it was at par with application of 75% of RDF + 2% spray of NPK 19:19:19 at 15 and 30 DAS”

✓ located verbatim in the source · abstract, characters 478–951

Title

Effect of Foliar Nutrition on Yield, Quality, Nutrient Content and Uptake of Kharif Cowpea

B. J. Chaudhary; P. P. Chaudhari; R. M. Parikh; et al. International Journal of Environment and Climate Change 2023. doi:10.9734/ijecc/2023/v13i103081

Other claims from this paper (8)

Record rev-87b8fb7df01d60bbeacec7df4bfec19c37ea5bc724087e4b36bed65af73b6d40 · schema claims-v0.9 · position 9 in the model’s answer

nitrogen · nutrient: content · Vigna unguiculata (cowpea)Positive and negative results

11 papers: 10 positive, 1 negative or no effect

9 papers in the same direction as this claim · 1 in the opposite direction

  1. negative
    Combined N and P fertilization reduced grain Zn content significantly at 60P

    Iron and zinc levels in Vigna unguiculata (L.) Walp under varying phosphorus and fixed nitrogen treatment conditions · 2018

    Opposite direction

  2. positive
    T6 produced significantly higher K content (1.45%) in fodder cowpea or postharvest soil.

    Effect of Organic and Inorganic Nutrient Sources on Growth, Yield, Nutrient Uptake and Economics of Fodder Cowpea [Vigna unguiculata (L.) Walp.] · 2020

    Same direction

  3. positive
    Liming and nitrogen supply increased leaf nitrogen concentration and accumulation in cowpea.

    Interaction of liming, mineral nitrogen fertilization, and Rhizobium inoculation in biomass partitioning and production of cowpea · 2023

    Same direction

  4. positive
    Urea increased accumulation of leaf nutrients in cowpea.

    Seeds inoculation and nitrogen fertilization for cowpea production on latosol in the western amazon · 2017

    Same direction

  5. positive
    Ammonium sulphate at 71.4 kg N/ha produced the highest seed nutrient concentrations and uptake.

    Influence of Nitrogen Sources and Bio-fertilizer on Soil Nutrients, Yield and Quality of Cowpea under Saline Soil Conditions · 2019 · compared with other treatments

    Same direction

  6. positive
    Nitrogen-fertilized and uninoculated cowpea had higher N-uptake than BR-inoculated plants.

    SYMBIOTIC EFFECTIVENESS OF BRAZILIAN RHIZOBIAL STRAINS IN IMPROVING N-FIXATION AND PRODUCTIVITY OF COWPEA IN MINNA, SOUTHERN GUINEA SAVANNA OF NIGERIA · 2019 · compared with plants inoculated with the BR strains

    Same direction

  7. positive
    Urea promoted high nutrient accumulation in cowpea leaves.

    Seeds inoculation and nitrogen fertilization for cowpea production on latosol in the western amazon · 2017

    Same direction

  8. positive
    A 2% urea foliar spray significantly increased nitrogen content in cowpea seed and haulm.

    Integrated approach to enhanching cowpea yield, quality and nutrient composition using foliar supplements · 2024

    Same direction

2 papers more in this group

See all 11 papers →

application · nutrient: content · Vigna unguiculata (cowpea)Positive and negative results

16 papers: 15 positive, 1 negative or no effect

14 papers in the same direction as this claim · 1 in the opposite direction

  1. no effect
    Seed K concentration responded approximately the same as P concentration to both amino acid sprays under moisture stress at flowering or fruiting and under regular irrigation.

    DRY MATTER , GROWTH, AND MINERAL STATUS OF COWPEA GROWN UNDER DROUGHT AND AMINO ACID APPLICATION · 2024 · compared with P concentration

    Opposite direction

  2. positive
    Combined soil and two foliar zinc applications raised grain zinc content by 22.7% over control.

    Zinc biofortification of dual-purpose cowpea [Vigna unguiculata(L.) Walp.] for enhancing the productivity and nutritional quality in a semi-arid regions of India · 2021 · compared with control

    Same direction

  3. positive
    M2F3 raised Zn concentrations in the grain to 17.07 mg kg−1.

    Interactive Effects of Molybdenum, Zinc and Iron on the Grain Yield, Quality, and Nodulation of Cowpea (Vignaunguiculata (L.) Walp.) in North-Western India · 2022 · compared with among all the treatments

    Same direction

  4. positive
    Foliar selenate biofortified cowpea grains with selenium.

    Agronomic biofortification of cowpea with selenium by foliar fertilization: effect of doses in three cultivars · 2019

    Same direction

  5. positive
    Organic mulches with biostimulants increased soil pH, organic carbon and nutrient content.

    Sustainable Practices for Arid Climates: Evaluating Combined Mulches with Biostimulant in Combating Soil Salinity and Cowpea Cultivation · 2024

    Same direction

  6. positive
    Silicon supplementation increased foliar N, P and Ca contents in cowpea.

    Foliar Silicon Alleviates Water Deficit in Cowpea by Enhancing Nutrient Uptake, Proline Accumulation, and Antioxidant Activity · 2025

    Same direction

  7. positive
    The combined treatment was best for seed N, P and K percentages.

    Response of Growth and Productivity of Cowpea Plants to Nano Mixture of Micronutrients Under Different Potassium Sulphate Fertilizer Rates · 2020 · compared with control treatment

    Same direction

  8. positive
    The two zinc practices gave the highest nutrient content and uptake.

    Productivity and Profitability of Fodder Cowpea Cultivars under Various Zinc Management Practices in IGP of India · 2021

    Same direction

7 papers more in this group

See all 16 papers →

phosphorus · nutrient: content · Vigna unguiculata (cowpea)Positive and negative results

26 papers: 20 positive, 6 negative or no effect

19 papers in the same direction as this claim · 6 in the opposite direction

  1. negative
    Phosphorus uptake declined above the combined fertilizer rates.

    Effect of phosphorus and zinc nutrition on growth and yield of fodder cowpea · 2016

    Opposite direction

  2. no effect
    Increasing phosphorus dose did not increase cowpea phosphorus content.

    Phosphorus doses alter the ionic homeostasis of cowpea irrigated with saline water · 2021

    Opposite direction

  3. no effect
    Application of P alone had no significant negative influence on grain Zn and Fe content of cowpea

    Iron and zinc levels in Vigna unguiculata (L.) Walp under varying phosphorus and fixed nitrogen treatment conditions · 2018

    Opposite direction

  4. negative
    Cowpea fodder P content declined above 60 kg/ha P2O5.

    Effect of Phosphorus and Zinc Application on Nutritional Characteristics of Fodder Cowpea ( Vigna unguiculata ) · 2015

    Opposite direction

  5. negative
    TSP and no phosphorus supported higher cowpea grain weight and P uptake than RP and SSP.

    Evaluation of phosphorus fertilizer rates for maize and sources for cowpea on different soil types in southwestern Nigeria · 2010 · compared with rock phosphate (RP) and single super phosphate (SSP)

    Opposite directionAbout lacking this nutrient, so it counts the other way round

  6. no effect
    Phosphate treatment left the actual amount of lead in cowpea shoots unaffected.

    EFFECTS OF CALCIUM HYDROGEN PHOSPHATE ON LEAD UPTAKE BY COWPEA (VIGNA UNGUICULATA) · 2020

    Opposite direction

  7. positive
    Phosphorus application significantly enhanced N and P uptake of cowpea genotypes.

    Phosphorus Response Efficiency in Cowpea Genotypes · 2011

    Same direction

  8. positive
    Phosphorus supplementation significantly improved the uptake of N, P and K in cowpea tissues relative to the control.

    Effects of Bradyrhizobium japonicum Inoculation and Supplementation with Phosphorus on Macronutrients Uptake in Cowpea (Vigna unguiculata (L.) Walp) · 2014 · compared with control

    Same direction

17 papers more in this group

See all 26 papers →

3 of 4 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.

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.