Intervention effectmodel-written summary

OW 6 had the highest wheat yield with three irrigations and the specified NPK dose.

A claim from Response of wheat (Triticum aestivum) cultivars to levels of fertilizers under limited irrigation · 2001

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

OW 6 had the highest wheat yield with three irrigations and the specified NPK dose.

Material
OW 6e0
Treatment
3 irrigations and 80, 40 and 20 kg N, P and K/hae0
Outcome
yielde0
Direction
higheste0
Value
27.63 q/hae0
Comparator
UP 262e0

Not reportedGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingQualifier

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

Triticum aestivum
Triticum aestivum · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“With 3 irrigations and 80, 40 and 20 kg N, P and K/ha ‘OW 6’ wheat gave the highest yield of 27.63 q/ha, followed by ‘UP 262’ (25.86 q/ha)”

✓ located verbatim in the source · abstract, characters 386–524

Title

Response of wheat (Triticum aestivum) cultivars to levels of fertilizers under limited irrigation

Dilip Kumar Bastia; Ajay Kumar Rout Indian Journal of Agronomy 2001

Other claims from this paper (4)

Record rev-eb4f6cdbedbc777969653075ac5b2f2b186eea6a65e636081382958d136048ed · schema claims-v0.9 · position 1 in the model’s answer

potassium · yield · Triticum aestivum (wheat)Positive and negative results

257 papers: 227 positive, 30 negative or no effect

226 papers in the same direction as this claim · 29 in the opposite direction · 1 reporting no difference from an alternative

  1. negative
    NK reduced yield to near the unfertilized control level.

    Effects of Long-Term Fertilization on Leaf Photosynthetic Characteristics and Grain Yield in Winter Wheat · 2004 · compared with no fertilizer

    Opposite direction

  2. no effect
    Nano-N with 75% conventional N gave wheat and maize grain yield at par with full conventional fertilizer.

    Changes in microbial community structure and yield responses with the use of nano-fertilizers of nitrogen and zinc in wheat–maize system · 2024 · compared with N 100 PK

    Opposite direction

  3. no effect
    Incorporating P and K into the subsoil did not further change wheat yield.

    The effects of subsoiling and deep incorporation of P and K fertilizers on the yield and nutrient uptake of barley, potatoes, wheat and sugar beet grown in rotation · 1979

    Opposite direction

  4. no effect
    Applications of multiple nutrients did not significantly increase wheat yield.

    Evidence for the involvement of the root lesion nematode Pratylenchus thornei in wheat yield decline in northern New South Wales · 1987

    Opposite direction

  5. negative
    Enterobacter cloacae Rhizo_33 without potassium increased grain yield by 19·16%.

    Impact of plant growth promoting rhizobacteria on different forms of soil potassium under wheat cultivation · 2019

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

  6. no effect
    Wheat biomass did not increase with potassium addition.

    Differential response of weed and crop species to potassium and sulphur fertilizers · 2007

    Opposite direction

  7. no effect
    Potassium rates did not significantly affect harvest index.

    Potassium Fertilization and its Level on Wheat (Triticum aestivum) Yield in Shallow Depth Soils of Northern Ethiopia · 2017

    Opposite direction

  8. no effect
    K had no significant effect on grain yield or total dry matter.

    Effect of Potassium and Nitrogen Fertilization on Lysine, Methionine, and Total Protein Contents of Wheat Grain, Triticum aestivum L. em. Thell.1 · 1972

    Opposite direction

248 papers more in this group

See all 257 papers →

phosphorus · yield · Triticum aestivum (wheat)Positive and negative results

572 papers: 524 positive, 48 negative or no effect

523 papers in the same direction as this claim · 43 in the opposite direction · 5 reporting no difference from an alternative

  1. negative
    Low phosphorus stress reduced tiller number in Kenong 199 wheat.

    Transcriptome analysis of axillary buds in low phosphorus stress and functional analysis of TaWRKY74s in wheat · 2024

    Opposite direction

  2. negative
    RAC875 had higher grain yield than Wyalkatchem at maturity under low phosphorus.

    Variation in root system architecture and morphology of two wheat genotypes is a predictor of their tolerance to phosphorus deficiency · 2019

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

  3. no effect
    Neither nitrogen nor phosphorus produced a significant grain yield response.

    Water use, growth and yield of wheat in a subtropical environment · 1980

    Opposite direction

  4. no effect
    Nano-N with 75% conventional N gave wheat and maize grain yield at par with full conventional fertilizer.

    Changes in microbial community structure and yield responses with the use of nano-fertilizers of nitrogen and zinc in wheat–maize system · 2024 · compared with N 100 PK

    Opposite direction

  5. no effect
    Incorporating P and K into the subsoil did not further change wheat yield.

    The effects of subsoiling and deep incorporation of P and K fertilizers on the yield and nutrient uptake of barley, potatoes, wheat and sugar beet grown in rotation · 1979

    Opposite direction

  6. no effect
    Applications of multiple nutrients did not significantly increase wheat yield.

    Evidence for the involvement of the root lesion nematode Pratylenchus thornei in wheat yield decline in northern New South Wales · 1987

    Opposite direction

  7. no effect
    Nitrogen and phosphorus fertilization did not significantly influence kernels per head or kernel weight.

    Adventitious Roots, Tillers, and Grain Yields of Spring Wheat as Influenced by N‐P Fertilization1 · 1970

    Opposite direction

  8. no effect
    Later phosphorus availability did not significantly increase mature root dry matter.

    Dry Matter Production in Tops and Roots of Winter Wheat as Affected by Phosphorus Availability During Various Growth Stages1 · 1983

    Opposite direction

563 papers more in this group

See all 572 papers →

irrigation · yield · Triticum aestivum (wheat)Positive and negative results

989 papers: 798 positive, 191 negative or no effect

797 papers in the same direction as this claim · 184 in the opposite direction · 7 reporting no difference from an alternative

  1. negative
    Minimum irrigation lowered average winter wheat yield by 14% versus full irrigation.

    Performance of Double‐Cropped Winter Wheat–Summer Maize under Minimum Irrigation in the North China Plain · 2006 · compared with fully irrigated treatment (FI)

    Opposite direction

  2. no effect
    Moderately saline water substituted for good quality water during part of the season maintained total wheat grain yield.

    Time of Salt Stress Affects Growth and Yield Components of Irrigated Wheat · 1994 · compared with good quality water

    Opposite direction

  3. negative
    Saline irrigation caused soil salinization and reduced wheat growth and yield.

    Effect of Straw Biochar on Soil Properties and Wheat Production under Saline Water Irrigation · 2019

    Opposite direction

  4. negative
    Deficit irrigation in salt-affected soil reduced wheat productivity.

    Collaborative Impact of Compost and Beneficial Rhizobacteria on Soil Properties, Physiological Attributes, and Productivity of Wheat Subjected to Deficit Irrigation in Salt Affected Soil · 2022

    Opposite direction

  5. negative
    Wastewater irrigation decreased plant height, leaf area and grain yield in wheat.

    Effect of Wastewater Irrigation on Photosynthesis, Growth, and Anatomical Features of Two Wheat Cultivars (Triticum aestivum L.) · 2020

    Opposite direction

  6. no effect
    An additional 33 mm of irrigation did not increase grain yield.

    Source–sink balance and manipulating sink–source relations of wheat indicate that the yield potential of wheat is sink-limited in high-rainfall zones · 2010

    Opposite direction

  7. no effect
    DI water saving had no effect on wheat yield.

    Yield and water productivity of maize and wheat under deficit and raised bed irrigation practices in Egypt · 2012

    Opposite direction

  8. negative
    Limited irrigation yielded 99% of full irrigation for winter wheat.

    Cropping Systems for Stretching Limited Irrigation Supplies · 1993 · compared with fully irrigated

    Opposite direction

980 papers more in this group

See all 989 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.