Intervention effectmodel-written summary

Urea amendments did not have a long-term effect on soil pH or accumulation of soil ammonium and nitrate.

A claim from Enhancing the Urea-N Use Efficiency in Maize (Zea mays) Cultivation on Acid Soils using Urea Amended with Zeolite and TSP · 2009

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

Urea amendments did not have a long-term effect on soil pH or accumulation of soil ammonium and nitrate.

Taxon
MaizeZea mayst0
Treatment
Urea amended with TSP and zeolite treatments and Urea only (urea without additives)e0
Outcome
soil pH and accumulation of soil exchangeable ammonium and nitratee0
Direction
did not have long term effecte0

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

e0

“Urea amended with TSP and zeolite treatments and Urea only (urea without additives) did not have long term effect on soil pH and accumulation of soil exchangeable ammonium and nitrate.”

✓ located verbatim in the source · abstract, characters 1667–1851
t0

“Maize (Zea mays)”

✓ located verbatim in the source · title, characters 39–55

Title

Enhancing the Urea-N Use Efficiency in Maize (Zea mays) Cultivation on Acid Soils using Urea Amended with Zeolite and TSP

Ahmed American Journal of Applied Sciences 2009. doi:10.3844/ajassp.2009.829.833

Other claims from this paper (5)

Record rev-e1e37f80b4cc2b3233b47ccccc2799113008c736198dc0a9c42283f51a268394 · schema claims-v0.9 · position 1 in the model’s answer

other · nutrient: content · Zea mays (maize)Positive and negative results

119 papers: 107 positive, 12 negative or no effect

12 papers in the same direction as this claim · 106 in the opposite direction

  1. positive
    Only the highest TSP and zeolite treatment significantly increased leaf urea-N uptake.

    Enhancing the Urea-N Use Efficiency in Maize (Zea mays) Cultivation on Acid Soils Amended with Zeolite and TSP · 2008

    Opposite directionCited by this paper

  2. positive
    Amending inorganic fertilizers with compost and clinoptilolite zeolite increased soil total N and exchangeable Ca, Mg, and K in the maize pot study.

    Short Term Enhancement of Nutrients Availability inZea maysL. Cultivation on an Acid Soil Using Compost and Clinoptilolite Zeolite · 2016

    Opposite directionCites this paper

  3. positive
    Foliar application of humic acids increased the uptake of P, K and Mg in corn.

    Effect of different levels of humic acids on the nutrient content, plant growth, and soil properties under conditions of salinity · 2011

    Opposite direction

  4. positive
    LMS humic fraction stimulates nitrate uptake by maize roots and nitrate accumulation at the leaf level.

    Effect of low molecular size humic substances on nitrate uptake and expression of genes involved in nitrate transport in maize (Zea mays L.) · 2004

    Opposite direction

  5. positive
    Addition of HA significantly increased soil N concentration and plant N accumulation over control.

    EFFECT OF DIFFERENT LEVELS OF LIGNITIC COAL DERIVED HUMIC ACID ON GROWTH OF MAIZE PLANTS · 2002 · compared with control

    Opposite direction

  6. positive
    Zeolite significantly reduced Zn concentration in young maize tissues.

    Mimicked In-Situ Stabilization of Metals in a Cropped Soil:  Bioavailability and Chemical Form of Zinc · 1996

    Opposite direction

  7. positive
    B3HAM produced the greatest maize P uptake.

    Cooperation among phosphate-solubilizing bacteria, humic acids and arbuscular mycorrhizal fungi induces soil microbiome shifts and enhances plant nutrient uptake · 2021

    Opposite direction

  8. positive
    Humic acid suppressed the aluminum-related reduction of leaf phosphorus.

    EFFECT OF HUMIC ACID ON ALUMINUM TOXICITY IN CORN PLANTS · 1986

    Opposite direction

110 papers more in this group

See all 119 papers →

phosphorus · nutrient: content · Zea mays (maize)Positive and negative results

244 papers: 190 positive, 54 negative or no effect

54 papers in the same direction as this claim · 189 in the opposite direction

  1. positive
    Only the highest TSP and zeolite treatment significantly increased leaf urea-N uptake.

    Enhancing the Urea-N Use Efficiency in Maize (Zea mays) Cultivation on Acid Soils Amended with Zeolite and TSP · 2008

    Opposite directionCited by this paper

  2. positive
    Phosphorus-based manure or compost application significantly reduced soil available P compared with N-based treatments after 4 years.

    Phosphorus‐ and Nitrogen‐Based Manure and Compost Applications Corn Production and Soil Phosphorus · 1999 · compared with N‐based treatments

    Opposite direction

  3. positive
    Combined inoculation with rock phosphate increased maize phosphorus uptake.

    Sustainable Management with Mycorrhizae and Phosphate Solubilizing Bacteria for Enhanced Phosphorus Uptake in Calcareous Soils · 2020 · compared with controls

    Opposite direction

  4. positive
    Joint application of rock P and K materials with PDB and KDB increased P and K uptake by maize.

    Impact of rock materials and biofertilizations on P and K availability for maize (Zea Maize) under calcareous soil conditions · 2011

    Opposite direction

  5. positive
    Surface-applied 3:1 urea/urea phosphate increased ear-leaf nitrogen at silking relative to surface-banded urea.

    Nitrogen Fertilizer Source, and Method and Time of Application Effects on No‐till Corn Yields and Nitrogen Uptakes1 · 1986 · compared with surface‐banded urea

    Opposite direction

  6. positive
    Under heterogeneous phosphorus, maize phosphorus uptake was greater with faba bean than maize neighbors.

    Neighbouring plants modify maize root foraging for phosphorus: coupling nutrients and neighbours for improved nutrient‐use efficiency · 2019 · compared with maize/maize system

    Opposite direction

  7. positive
    PSB inoculation, biochar and their combination positively affected maize nutrient concentration on days 45 and 65.

    Enhancement of maize plant growth with inoculation of phosphate-solubilizing bacteria and biochar amendment in soil · 2017

    Opposite direction

  8. positive
    High phosphorus and low zinc increased iron and manganese mobility in corn.

    Micronutrient Uptake and Mobility Within Corn Plants (Zea mays L.) in Relation to Phosphorus‐induced Zinc Deficiency · 1970

    Opposite direction

235 papers more in this group

See all 244 papers →

nitrogen · nutrient: content · Zea mays (maize)Positive and negative results

489 papers: 403 positive, 86 negative or no effect

85 papers in the same direction as this claim · 403 in the opposite direction

  1. no effect
    Urea amendments had no long-term effect on soil pH or exchangeable ammonium and nitrate accumulation.

    Enhancing the Urea-N Use Efficiency in Maize (Zea mays) Cultivation on Acid Soils Amended with Zeolite and TSP · 2008 · compared with urea only (urea without additives)

    Same directionCited by this paper

  2. positive
    The variable yield goal zone strategy used 6–46% less nitrogen than uniform management.

    Economic Feasibility of Variable‐Rate Nitrogen Application Utilizing Site‐Specific Management Zones · 2004 · compared with uniform N management

    Opposite direction

  3. positive
    Withholding nitrogen from V8 to maturity reduced N uptake by 53%.

    Nitrogen Uptake and Partitioning in Stay‐Green and Leafy Maize Hybrids · 2005

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

  4. positive
    Surface-applied 3:1 urea/urea phosphate increased ear-leaf nitrogen at silking relative to surface-banded urea.

    Nitrogen Fertilizer Source, and Method and Time of Application Effects on No‐till Corn Yields and Nitrogen Uptakes1 · 1986 · compared with surface‐banded urea

    Opposite direction

  5. positive
    At no nitrogen input in monoculture, shoot N, Ca and Mg concentrations were lower than other treatments.

    Crop Rotation and Nitrogen Input Effects on Soil Fertility, Maize Mineral Nutrition, Yield, and Seed Composition · 2009 · compared with other N input/rotation treatments

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

  6. positive
    Nitrate in washing solution increased uptake 3.5-fold over control.

    Nitrate Uptake and Induction of Nitrate Reductase in Excised Corn Roots · 1975 · compared with control

    Opposite direction

  7. positive
    Nitrogen uptake was greater from nitrate than ammonium.

    Nitrate and Ammonium as Sources of Nitrogen for Corn and Their Influence on the Uptake of Other Ions1 · 1970 · compared with ammonium

    Opposite direction

  8. positive
    Fv/Fm, photosynthetic CO2 assimilation and leaf nitrogen concentration increased with nitrogen level and followed low-high-low variation.

    Effects of nitrogen stress on the photosynthetic CO2 assimilation, chlorophyll fluorescence and sugar-nitrogen ratio in corn · 2015

    Opposite direction

480 papers more in this group

See all 489 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.