Intervention effectmodel-written summary

Irrigation at 0.8 IW:CPE ratio with N at 120 kg ha-1 and P2O5 at 80 kg ha-1 gave maximum leaf area index at 90 days after sowing.

A claim from Effect of irrigation, N, and P on yield and yield attributes of spring sunflower (Helianthus annuus L.) · 2016

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Irrigation at 0.8 IW:CPE ratio with N at 120 kg ha-1 and P2O5 at 80 kg ha-1 gave maximum leaf area index at 90 days after sowing.

Taxon
Helianthus annuusHelianthus annuust0
Treatment
Irrigation applied at 0.8 Irrigation Water:Cumulative Pan Evaporation (IW:CPE) ratio, N at 120 kg ha-1, and P2O5 at 80 kg ha-1e1
Outcome
leaf area index (LAI)e1
Direction
maximume1
Qualifier
at 90 days after sowinge1

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValue

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

Helianthus annuus
Helianthus annuus · TaxonJon Sullivan · Public domain · Wikimedia Commons ↗

Verbatim

t0

“Effect of irrigation, N, and P on yield and yield attributes of spring sunflower (Helianthus annuus L.)”

✓ located verbatim in the source · title, characters 0–103
e1

“Irrigation applied at 0.8 Irrigation Water:Cumulative Pan Evaporation (IW:CPE) ratio, N at 120 kg ha-1, and P2O5 at 80 kg ha-1 produced maximum plant height, number of leaves, dry weight per plant at harvest, and leaf area index (LAI) at 90 days after sowing”

✓ located verbatim in the source · abstract, characters 287–545

Title

Effect of irrigation, N, and P on yield and yield attributes of spring sunflower (Helianthus annuus L.)

H. P. S. Tomar; K. S. Dadhwal; Harjinder Singh Tropical Agriculture 2016

Other claims from this paper (10)

Record rev-dfef7a97e5a1358308f853a1c7a18cdcd7cd678d87620475c6953e529819bdb5 · schema claims-v0.9 · position 2 in the model’s answer

phosphorus · growth · Helianthus annuus (common sunflower)Positive and negative results

38 papers: 32 positive, 6 negative or no effect

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

  1. positive
    Sunflower plant height was maximum at 184.25 cm with 150-50 NP kg ha-1.

    INTEGRATED MANAGEMENT OF NP FERTILIZERS CAN BOOST THE GROWTH AND YIELD PERFORMANCE OF SUNFLOWER (HELIANTHUS ANNUS L.) · 2021

    Same directionCites this paper

  2. negative
    Low medium phosphate inhibited plant growth rate.

    Photosynthesis and chlorophyll fluorescence in sunflower (Helianthus annuus L.) leaves as affected by phosphorus nutrition · 1994

    Opposite direction

  3. negative
    Omitting phosphorus severely impaired sunflower vegetative growth and development.

    Effect of nutrient omission in the development of sunflower BRS-122 in greenhouse conditions · 2019

    Opposite direction

  4. negative
    Low P reduced sunflower total dry weight to 82% after 42 days.

    Understanding leaf area expansion in sunflower and wheat grown under low-phosphorus conditions · 1998

    Opposite direction

  5. no effect
    Grain size did not change with N and P.

    Root System, Phenology and Yield of Sunflower in Relation to Nitrogen and Phosphorus · 2015

    Opposite direction

  6. no effect
    PSB or phosphorus levels applied alone did not markedly influence sunflower growth parameters.

    EFFECTS OF PHOSPHORUS LEVELS, PHOSPHATE SOLUBILIZING BACTERIA APPLICATIONS AT VARYING DOSES AND TECHNIQUES ON PLANT STAND, OIL CONTENT AND YIELD OF SUNFLOWER (HELIANTHUS ANNUS L.) · 2024

    Opposite direction

  7. no effect
    Superphosphate phosphorus had no significant effect on studied growth parameters.

    EFFECT OF CADMIUM ON GROWTH OF SUNFLOWER PLANT GROWN IN CALCAREOUS SOIL · 1994

    Opposite direction

  8. positive
    Phosphate deficiency decreased leaf ATP, ADP, and adenylate energy charge.

    In vivo photosynthetic electron transport does not limit photosynthetic capacity in phosphate‐deficient sunflower and maize leaves · 1993

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

29 papers more in this group

See all 38 papers →

irrigation · growth · Helianthus annuus (common sunflower)Positive and negative results

45 papers: 35 positive, 10 negative or no effect

34 papers in the same direction as this claim · 9 in the opposite direction · 1 reporting no difference from an alternative

  1. negative
    Deficit irrigation significantly reduced sunflower plant growth parameters (canopy coverage and biomass, not root length density) compared with full irrigation.

    Effects of deficit irrigation on yield, water productivity and economic return of sunflower · 2017 · compared with full irrigation (FI) (T1)

    Opposite direction

  2. no effect
    With half its roots irrigated with PEG, sunflower height and dry weights were close to those of controls.

    Water Relations of Water-Stressed, Split-Root C 4 (Sorghum bicolor; Poaceae) and C 3 (Helianthus annuus; Asteraceae) Plants · 1995 · compared with control plants

    Opposite direction

  3. negative
    Sunflower biomass decreased as irrigation water decreased.

    Root-Zone Soil Water Balance and Sunflower Yield under Deficit Irrigated in Zambia · 2018

    Opposite direction

  4. negative
    Growth power was reduced despite re-watering after prolonged drought.

    Physiological Responses of Sunflower (Helianthus annuus L.) to Multiple Combined Prolonged Drought Stress, Salinity Stress and Boron Toxicity: Insights from Pre‐ and Post‐Recovery Stages · 2025

    Opposite direction

  5. negative
    Increasing irrigation level led to a 49.17% decrease in sunflower head fresh weight.

    The effect of water deficit on characteristics phisyological-chemical of sunflower (Helianthus Annuus L.) varieties · 2010

    Opposite direction

  6. negative
    Irrigation after 100 mm evaporation decreased sunflower seed length by 15 % relative to 50 mm.

    GRAIN PHYSICAL PROPERTIES OF SOME SUNFLOWER CULTIVARS INFLUENCED BY WATER DEFICIT STRESS · 2012 · compared with irrigation after 50 mm cumulative evaporation from pan

    Opposite direction

  7. no effect
    The irrigation by fertigation interaction did not significantly influence dry matter or NPK uptake.

    Effect of different levels of drip irrigation regimes and fertigation on dry matter and nutrient uptake by Rabi sunflower (Helianthus annuus L.) · 2021

    Opposite direction

  8. negative
    Longer irrigation intervals decreased sunflower plant height.

    Some Morphologic Traits and Oil variations in Sunflower (Helianthus annuus L.) Affected by Irrigation Regimes · 2013

    Opposite direction

36 papers more in this group

See all 45 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.