Intervention effectmodel-written summary

Reduced tillage with targeted NPK and micronutrients gave the highest maize yield.

A claim from Results from the Fertilizer demonstration experiment with maize at IOP Farm in Iringa, Tanzania in 2019 · 2020

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Reduced tillage with targeted NPK and micronutrients gave the highest maize yield.

Taxon
maizeZea mayst0
Treatment
reduced tillage and NPK fertilizer to target 70% of water-limited yield and the addition of micronutrientse0
Outcome
yielde0
Direction
higheste0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“maize”

✓ located verbatim in the source · title, characters 58–63
e0

“the highest with reduced tillage and NPK fertilizer to target 70% of water-limited yield and the addition of micronutrients”

✓ located verbatim in the source · abstract, characters 267–390

Title

Results from the Fertilizer demonstration experiment with maize at IOP Farm in Iringa, Tanzania in 2019

Peter Mtakwa; N. A. Urio; Peter Mtakwa; et al. CGSPace A Repository of Agricultural Research Outputs (Consultative Group for International Agricultural Research) 2020

Other claims from this paper (1)

Record rev-ce565cb718240fb6e13fcdc6b4e38f140a7652578f7c5523d003eebc4573b608 · schema claims-v0.9 · position 2 in the model’s answer

micronutrient · yield · Zea mays (maize)Results differ

80 papers: 73 positive, 7 negative or no effect

72 papers in the same direction as this claim · 6 in the opposite direction · 1 reporting no difference from an alternative

  1. no effect
    Lime and micronutrients did not alleviate the affected yield.

    Tillage and Fertilization of Corn Grown on Lespedeza Sod1 · 1973

    Opposite direction

  2. no effect
    Secondary and micronutrients did not further enhance grain yield.

    Effect of Nutrient Omission on Grain Yield and Yield Components of Maize (Zea mays L.) at Kersa District, Jimma Zone, Southwestern Ethiopia · 2021

    Opposite direction

  3. no effect
    Supplying micronutrients with the phosphorus source did not affect maize yield.

    Effect of coating phosphorus with humic acids and micronutrients on yield of soybean and maize in succession · 2024

    Opposite direction

  4. no effect
    Foliar micronutrient applications did not significantly affect corn grain yield when averaged across both years.

    Innovative foliar micronutrient sources in high-yielding corn environments · 2016

    Opposite direction

  5. no effect
    Micronutrient fertilization did not significantly change field yield.

    Iron and Zinc Deficiencies in Selected Calcareous Soils of Southern Utah · 2021

    Opposite direction

  6. no effect
    Irrigation, micronutrient seed soaking and their interaction did not significantly affect rows per ear, ear length or ear diameter.

    RESPONSE OF MAIZE YIELD AND YIELD COMPONENTS TO SOAKING SEEDS IN SOME MICRONUTRIENTS SOLUTIONS UNDER WATER STRESS CONDITIONS · 2014

    Opposite direction

  7. no effect
    Grain yield of maize treated with micronutrient doses was similar to a commercial reference product.

    Biofortification of maize grains with micronutrients by enriched biomass of blackcurrant seeds · 2015 · compared with commercial reference product

    No difference from an alternative

  8. positive
    S and micronutrients increased maize yield by 0.84 t ha−1 over macronutrients alone.

    Application of secondary nutrients and micronutrients increases crop yields in sub-Saharan Africa · 2017 · compared with macronutrient only treatment

    Same direction

71 papers more in this group

See all 80 papers →

tillage · yield · Zea mays (maize)Positive and negative results

1,099 papers: 812 positive, 287 negative or no effect

811 papers in the same direction as this claim · 230 in the opposite direction · 57 reporting no difference from an alternative

  1. no effect
    Cover-crop no-tillage and standard no-tillage gave similar corn yields.

    Potential Long‐Term Benefits of No‐Tillage and Organic Cropping Systems for Grain Production and Soil Improvement · 2007 · compared with NT

    Opposite direction

  2. negative
    No-till produced less corn grain than plow tillage.

    Tillage and Rotation Interactions for Corn and Soybean Grain Yield as Affected by Precipitation and Air Temperature · 2004 · compared with plow

    Opposite direction

  3. no effect
    Tillage had no grain-yield effect in manure or compost plots in three of four years.

    Composted and Noncomposted Manure Application to Conventional and No‐Tillage Systems: Corn Yield and Nitrogen Uptake · 1999

    Opposite direction

  4. negative
    No-tillage corn grain yield was 5% lower than under conventional tillage.

    Corn and Soybean Response to Rotation Sequence, Row Spacing, and Tillage System · 2003 · compared with conventional tillage system

    Opposite direction

  5. negative
    Continuous no-till corn on Chalmers soil was 2% wetter at harvest than plowed corn.

    Long‐Term Tillage and Rotation Effects on Corn Growth and Yield on High and Low Organic Matter, Poorly Drained Soils · 1988 · compared with plowing

    Opposite direction

  6. negative
    No-tillage without red clover reduced corn grain yield by 13% versus conventional tillage over three years.

    Red Clover and Tillage Influence on Soil Temperature, Water Content, and Corn Emergence · 1999 · compared with conventional tillage treatment

    Opposite direction

  7. no effect
    A significant tillage x year interaction indicated equal continuous corn yields for CT and NT in the first 2 years.

    Corn Production as Affected by Tillage System and Starter Fertilizer · 2002 · compared with NT

    Opposite direction

  8. negative
    Soil compaction markedly reduced corn growth and yield.

    Soil Compaction in the Field and Corn Growth1 · 1962

    Opposite direction

1,090 papers more in this group

See all 1,099 papers →

fertilization · yield · Zea mays (maize)Positive and negative results

3,908 papers: 3,485 positive, 423 negative or no effect

3,484 papers in the same direction as this claim · 338 in the opposite direction · 85 reporting no difference from an alternative

  1. negative
    If the V8 sufficiency index was below 90%, in-season nitrogen application did not attain maximum yields.

    Ability for In‐Season Correction of Nitrogen Deficiency in Corn Using Chlorophyll Meters · 1997

    Opposite direction

  2. no effect
    N fertilization did not significantly influence belowground NPP of corn.

    Nitrogen fertilizer effects on soil carbon balances in Midwestern U.S. agricultural systems · 2009

    Opposite direction

  3. negative
    Average grain yield of maize was reduced by 37% at low N (no N fertilizer) compared with high N.

    Improving Nitrogen‐Use Efficiency in European Maize · 2003 · compared with HN

    Opposite direction

  4. no effect
    2 t pm/ha + 30-20-20 kg NPK/ha gave maize biomass and grain yields similar to 4 t pm/ha.

    Poultry manure effect on growth and yield of maize · 2009 · compared with 4 t pm/ha

    Opposite direction

  5. no effect
    Maize yields did not respond to P fertilization.

    Arbuscular mycorrhizal fungi in soil and roots respond differently to phosphorus inputs in an intensively managed calcareous agricultural soil · 2016

    Opposite direction

  6. no effect
    More N fertilizer on the previous small-grain crop rarely increased spring soil nitrate or corn yield.

    Soil Nitrate Accumulation and Corn Response to Preceding Small‐Grain Fertilization and Cover Crops · 1999

    Opposite direction

  7. no effect
    Starter fertilizer did not increase yield.

    Corn Yield is Equal in Conventional, Reduced, and No Tillage after 20 Years · 1996

    Opposite direction

  8. negative
    IC produced the lowest second-year or continuous corn yield.

    Managing Soil Carbon and Nitrogen for Productivity and Environmental Quality · 2004

    Opposite direction

3,899 papers more in this group

See all 3,908 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.