Intervention effectmodel-written summary

Blended fertilizer with Cu and Zn gave maximum total biomass yield of 16867.7 kg ha-1.

A claim from Blended Fertilizers Effects on Maize Yield and Yield Components of Western Oromia, Ethiopia · 2016

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Blended fertilizer with Cu and Zn gave maximum total biomass yield of 16867.7 kg ha-1.

Taxon
MaizeZea mayst0
Treatment
blended fertilizers with Cu and Zne0
Outcome
total biomass yielde0
Direction
maximume0
Value
16867.7 kg ha-1e0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingQualifier

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

e0

“maximum mean grain yield (8399.7 kg ha-1), stover yield (8553.1 kg ha-1) and total biomass yield (16867.7 kg ha-1) were recorded for blended fertilizers with Cu and Zn”

✓ located verbatim in the source · abstract, characters 1226–1393
t0

“Maize”

✓ located verbatim in the source · title, characters 31–36

Title

Blended Fertilizers Effects on Maize Yield and Yield Components of Western Oromia, Ethiopia

Dagne Chimdessa Agriculture Forestry and Fisheries 2016. doi:10.11648/j.aff.20160505.13

Other claims from this paper (10)

Record rev-4bcec4e73f345a476fd0670be90bcad3183a9d56f7f6226b1576e0abb7d68cd0 · schema claims-v0.9 · position 8 in the model’s answer

copper atom · yield · Zea mays (maize)Results differ

26 papers: 18 positive, 8 negative or no effect

17 papers in the same direction as this claim · 8 in the opposite direction

  1. positive
    The highest maize grain yield, 6689 kg/ha, was obtained with 100 kg NPSB + 260 kg urea top dressing + Cu.

    Evaluation of blended fertilizer rate for better production of maize at Siltie Zone Sankura Woreda · 2022

    Same directionCites this paper

  2. no effect
    High Cu applications from manure did not adversely affect corn yields.

    Effect of Copper Levels in Swine Manure on Corn and Soil · 1983

    Opposite direction

  3. no effect
    Neither copper source decreased corn yield on the three soils.

    Long‐term effects of copper rich swine manure application on continuous corn production · 1991

    Opposite direction

  4. no effect
    Fifteen years of Cu and Zn sulfate applications did not affect corn grain or silage yields

    Form and Availability of Copper and Zinc in a Rhodic Paleudult Following Long‐Term CuSO4 and ZnSO4 Applications · 1982

    Opposite direction

  5. negative
    Soil copper contamination of 200 to 600 mg kg –1 reduced maize yield.

    Response of maize (Zea mays L.) to soil contamination with copper depending on applied contamination neutralizing substances · 2012

    Opposite direction

  6. negative
    At 150 and 200 mg copper per kg soil, maize shoot yield decreased.

    Phytoextraction with Maize of Soil Contaminated with Copper after Application of Mineral and Organic Amendments · 2020

    Opposite direction

  7. negative
    Copper treatments somewhat reduced corn yields

    Availability of Zinc, Copper and Iron in Fusions with Sulfur1 · 1969

    Opposite direction

  8. negative
    Copper had the second greatest yield decrease after nickel.

    Biochar as a Stimulator of Zea mays Growth and Enzyme Activity in Soil Contaminated with Zinc, Copper, and Nickel · 2025 · compared with Nickel

    Opposite direction

17 papers more in this group

See all 26 papers →

zinc atom · yield · Zea mays (maize)Results differ

441 papers: 391 positive, 50 negative or no effect

390 papers in the same direction as this claim · 47 in the opposite direction · 3 reporting no difference from an alternative

  1. negative
    Adding Zn to the intermediate Fe level accentuated Fe deficiency and depressed corn yield.

    Nutrient Balance Involving Phosphorus, Iron, and Zinc · 1965 · compared with intermediate Fe level

    Opposite direction

  2. negative
    Corn yield at zero zinc and 3.0 mM phosphorus was significantly lower than at 1.0 mM phosphorus.

    Potential for Phosphorus Toxicity in Zinc‐Stressed Corn and Potato · 1981 · compared with 1.0 m M P

    Opposite direction

  3. no effect
    Most foliar Zn applications had no grain-yield effect.

    Effect of Foliar Micronutrients (B, Mn, Fe, Zn) on Maize Grain Yield, Micronutrient Recovery, Uptake, and Partitioning · 2021

    Opposite direction

  4. negative
    In a pot experiment the highest Zn rate (250 ppm) slightly reduced corn yield.

    EFFECTS OF SOIL PROPERTIES AND AMENDMENTS ON THE AVAILABILITY OF ZINC IN SOILS · 1974

    Opposite direction

  5. negative
    Zn alone or P alone reduced aboveground dry matter and yield at harvest by 8-85% in LCV and FER soils relative to unfertilized plants

    Combining P and Zn fertilization to enhance yield and grain quality in maize grown on Mediterranean soils · 2021 · compared with unfertilized (control) plants

    Opposite direction

  6. no effect
    Maize grain yield did not respond to zinc application.

    Yield-limiting plant nutrients for maize production in northwest Ethiopia · 2022

    Opposite direction

  7. no effect
    Soil Zn did not affect maize yield at any Cd concentration.

    Cadmium‐zinc interaction in maize grown on sewer water irrigated soil · 1993

    Opposite direction

  8. negative
    Shoot and root dry matter yield depression under Zn stress was 78 to 95 and 72 to 94%, respectively, relative to 5 ppm supplemental Zn.

    Zinc Response in Corn as Influenced by Genetic Variability1 · 1976 · compared with 5 ppm supplemental Zn level

    Opposite direction

432 papers more in this group

See all 441 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
    Unfertilized maize plots had the lowest grain yield, 2475 kg ha -1.

    Effect of NPSZn and Nitrogen Rates on Yield and Yield Components of Maize (Zea mays L) in Eastern Hararghe, Ethiopia · 2021

    Opposite directionCites this paper

  2. no effect
    NPSB fertilizer did not significantly influence listed growth and yield component traits compared with blanket NP fertilizer.

    Effect of Compound (NPSB) Fertilizer Type on Yield and Nutrient use Efficiency of Maize (Zea mays L.) at Beko Village in Yeki District, Southwest Ethiopia · 2023 · compared with previously blanket recommended Nitrogen and Phosphorus (NP) fertilizer

    No difference from an alternativeCites this paper

  3. positive
    NPK application produced the highest mean grain yields.

    Optimizing fertilization schemes to narrow the maize yield gap in smallholder farming systems in southern Ethiopia · 2024

    Same directionCites this paper

  4. positive
    At Dasenech, Melkassa-2 treated with 100 kg/ha NPSB gave the highest grain yield (3913.3 kg/ha).

    Evaluation of NPSB Fertilizer Levels on Yield and Yield Components of Open Pollinated Maize (Zea mays L.) Varieties Under Irrigated Condition in South Omo Zone · 2021

    Same directionCites this paper

  5. positive
    Maize ear length was highest, 32.58 ± 1.46 cm, with 150 kg/ha NPSB combined with 90 kg/ha K.

    Effect of Blended Nitrogen, Phosphorus, Sulfur, Boron, and Potassium Fertilizer Rates on Growth and Yield of Maize (Zea mays L.) at Sodo Zuriya District, Southern Ethiopia · 2023

    Same directionCites this paper

  6. positive
    Early sowing with 200 kg per hectare multinutrient was the most profitable treatment.

    Agronomic and Economic Performance of Rain-Fed Maize (Zea mays L.) Production under Varying Sowing Dates and Multinutrient Fertilizer Levels in Shire Area, Northern Ethiopia · 2024

    Same directionCites this paper

  7. positive
    The highest maize grain yield (7026.4 kg/ha) was obtained with 200 kg/ha blended NPSB and 69 kg/ha N.

    Effects of Blended NPSB and N Fertilizer Rates on Maize (Zea mays L.) Grain Yield and Yield Components in Chora District, Buno Bedele Zone, South Western Ethiopia · 2022

    Same directionCites this paper

  8. positive
    Sole application of recommended NPS fertilizer increased maize yield by 52.27% over control treatments.

    Effect of Combined Application of Vermicompost and NPS Fertilizer Rates on Growth, Yield and Yield Components of Maize (Zea mays L.) at Toke Kutaye District, Ethiopia · 2022 · compared with control treatments

    Same directionCites this paper

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.