Intervention effectmodel-written summary

Foliar ZnO nanoparticle spray increased grain yield by 11% compared with control.

A claim from Synthesis and application of optimized ZnO nanoparticles for improving yield and Zn content of rice (Oryza sativa L.) grain · 2022

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Foliar ZnO nanoparticle spray increased grain yield by 11% compared with control.

Treatment
foliar application of nano ZnOe0
Outcome
Grain yielde0
Direction
increasede0
Value
11%e0
Comparator
control groupe0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingQualifier

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

Oryza sativa
Oryza sativa · Taxon · picture from its Wikimedia Commons categoryDesmanthus4food · CC BY-SA 3.0 us · Wikimedia Commons ↗

Verbatim

e0

“Grain yield and grain Zn content was significantly increased by 11% and 28%, respectively, in case of foliar application of nano ZnO as compared to control group”

✓ located verbatim in the source · abstract, characters 1188–1349
t0

“rice (Oryza sativa L.) grain”

✓ located verbatim in the source · title, characters 95–123

Title

Synthesis and application of optimized ZnO nanoparticles for improving yield and Zn content of rice (Oryza sativa L.) grain

Muhammad Akmal; Ayesha Younus; Abdul Wakeel; et al. Journal of Plant Nutrition 2022. doi:10.1080/01904167.2022.2087090

Other claims from this paper (7)

Record rev-d2ae917e58013d9d49f784740a6add00e8c4811a71871df2115174a3a3224819 · schema claims-v0.9 · position 2 in the model’s answer

zinc oxide · yield · Oryza sativa (rice)Results differ

34 papers: 32 positive, 2 negative or no effect

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

  1. positive
    ZnO NPs increased rice grain yield by 1.40–4.62%.

    Zinc Oxide Nanoparticles Enhance Grain Yield and Nutritional Quality in Rice via Improved Photosynthesis and Zinc Bioavailability · 2025

    Same directionCites this paper

  2. no effect
    Direct-soil ZnO-NEC at 50 mg.kg -1 gave the same high grain yield per hill as inorganic fertilizer.

    Effect of ZnO Nanoparticles enhanced compost with different application methods on nutrient uptake and Grain Yield of Rice (Oryza sativa) Var. Inpari 32 · 2024 · compared with inorganic treatment

    Opposite direction

  3. no effect
    2.0% ZEU (ZnO) gave yield attributes and grain and straw yields very close to ZEU applied as ZnSO4 · H2O.

    Summer green-manuring crops and zinc fertilization on productivity and economics of basmati rice (Oryza sativaL.) · 2011 · compared with 2.0% Zn-enriched urea (ZEU) as ZnSO4 · H2O

    No difference from an alternative

  4. positive
    ZnO NPs increased rice grain production and dry matter accumulation.

    The Effect of Zinc Oxide Nanoparticles for Enhancing Rice (Oryza sativa L.) Yield and Quality · 2021

    Same direction

  5. positive
    Biochar plus ZnO NPs under 9-day irrigation positively affected number of panicles m−2; the result was not significantly different from the 3-day irrigation control.

    The Integrative Effects of Biochar and ZnO Nanoparticles for Enhancing Rice Productivity and Water Use Efficiency under Irrigation Deficit Conditions · 2022 · compared with control treatment (irrigation every 3 d)

    Same direction

  6. positive
    ZnO NPs increased rice grain yield by 3.24%–4.86% in 2019 in zinc deficient soils.

    Zinc oxide nanoparticles enhanced rice yield, quality, and zinc content of edible grain fraction synergistically · 2023

    Same direction

  7. positive
    Foliar ZnO nanoparticles increased grain yield 22.1% under heatwave stress.

    Zinc oxide nanoparticles cooperate with the phyllosphere to promote grain yield and nutritional quality of rice under heatwave stress · 2024 · compared with HW control

    Same direction

  8. positive
    Combined strains and zinc oxide produced the highest paddy growth and productivity.

    FE-SEM/EDX Based Zinc Mobilization Analysis of Burkholderia cepacia and Pantoea rodasii and Their Functional Annotation in Crop Productivity, Soil Quality, and Zinc Biofortification of Paddy · 2022

    Same direction

25 papers more in this group

See all 34 papers →

nanoparticle · yield · Oryza sativa (rice)Positive and negative results

202 papers: 189 positive, 13 negative or no effect

188 papers in the same direction as this claim · 11 in the opposite direction · 2 reporting no difference from an alternative

  1. no effect
    With Sesbania, 0.2% nano ZnO-coated urea gave statistically equivalent yield and micronutrient loading in edible tissues.

    Interplay between nano zinc oxide-coated urea and summer green manuring in basmati rice under basmati rice-wheat cropping system: implications on yield response, nutrient acquisition and grain fortification · 2023

    Opposite directionCites this paper

  2. no effect
    Combining 97.5 kg N ha-1 with nano-urea gave rice yields statistically comparable to 130 kg N ha-1.

    Augmenting nitrogen and zinc fertilization to enhance productivity, nutrient uptake, and nutrient use efficiency in rice · 2026 · compared with 130 kg N ha −1

    No difference from an alternativeCites this paper

  3. positive
    ZnO NPs increased rice grain yield by 1.40–4.62%.

    Zinc Oxide Nanoparticles Enhance Grain Yield and Nutritional Quality in Rice via Improved Photosynthesis and Zinc Bioavailability · 2025

    Same directionCites this paper

  4. negative
    CeO 2 NPs reduced rice grain yield by 16.2% under heat waves.

    Heat Waves Coupled with Nanoparticles Induce Yield and Nutritional Losses in Rice by Regulating Stomatal Closure · 2024

    Opposite direction

  5. negative
    65 kg ha –1 plus nano urea foliar sprays reduced rice grain yield by 9.4 %.

    Relative performance of granulated and nano urea on productivity and nitrogen use efficiency of wheat–rice sequence · 2024

    Opposite direction

  6. no effect
    Nano Fe2O3 did not significantly improve grain or straw yield.

    Influence of iron nanoparticles on rice (Oryza sativa) plant growth and yields · 2023

    Opposite direction

  7. negative
    NP-treated urea reduced rice yield by 5.6% against untreated urea in 2014.

    Rice Grain Yield and Nitrogen Uptake as Affected by Urea Amendment and Rainfall Timing · 2017 · compared with untreated urea

    Opposite direction

  8. negative
    Omitting NP resulted in rice cultivation losses.

    Nutrient omission plot technique for yield response, indigenous nutrient supply and nutrient use efficiency estimation of rice (Oryza sativa L.) crop in Andaman & Nicobar Islands · 2019

    Opposite direction

193 papers more in this group

See all 202 papers →

application · yield · Oryza sativa (rice)Positive and negative results

691 papers: 645 positive, 46 negative or no effect

644 papers in the same direction as this claim · 37 in the opposite direction · 9 reporting no difference from an alternative

  1. negative
    Traditional soaking reduced kernel yield of direct seeded rice compared with control.

    Enhancing the Performance of Direct Seeded Fine Rice by Seed Priming · 2006 · compared with control

    Opposite direction

  2. no effect
    Foliar-applied Zn, I, Fe or Se did not affect rice grain yield.

    Simultaneous Biofortification of Rice With Zinc, Iodine, Iron and Selenium Through Foliar Treatment of a Micronutrient Cocktail in Five Countries · 2020 · compared with local control (LC)

    Opposite direction

  3. no effect
    Foliar silicon had no significant effect on plant height, harvest index or number of kernels of rice.

    Effect of Foliar Application of Silicon on Yield and Quality of Rice (Oryza Sativa L) · 2013

    Opposite direction

  4. negative
    Foliar Zn application at a late stage was not as effective as soil application in increasing yield attributes and yield of rice.

    Relative Efficiency of Zinc-Coated Urea and Soil and Foliar Application of Zinc Sulphate on Yield, Nitrogen, Phosphorus, Potassium, Zinc and Iron Biofortification in Grains and Uptake by Basmati Rice (Oryza sativa L.) · 2015 · compared with soil application

    Opposite direction

  5. negative
    Foliar spray decreased grain yield.

    Suppression of methane fluxes from flooded paddy soil with rice plants by foliar spray of nitrogen fertilizers · 1992

    Opposite direction

  6. negative
    Foliar spray of urea gave the lowest yield components and yield in this study.

    Response of Transplanted Rice to Different Application Methods of Urea Fertilizer · 2009

    Opposite direction

  7. no effect
    The number of foliar phytohormone sprays made no significant difference to yield.

    Rice yield improvement by foliar application of phytohormone · 2014

    Opposite direction

  8. no effect
    Foliar nutrient application did not significantly affect 1,000-grain weight in rice.

    Effects of Foliar Application of Liquid Fertilizer on Agronomical and Physiological Traits of Rice (Oryza sativa L.) · 2020

    Opposite direction

682 papers more in this group

See all 691 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.