Intervention effectmodel-written summary

Herbicide and nano urea combinations gave higher plant height, tiller number, and leaf area.

A claim from Effect of Nano Urea and Post-emergence Herbicides on Growth Performance of Aerobic Rice (Oryza sativa L.) · 2026

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Herbicide and nano urea combinations gave higher plant height, tiller number, and leaf area.

Taxon
Aerobic Rice (Oryza sativa L.)Oryza sativat0
Treatment
herbicide-nano urea combinationse0
Outcome
plant height, number of tillers, leaf areae0
Direction
Highere0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier

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

“Higher plant height, number of tillers, leaf area and total dry matter production were recorded in treatments receiving herbicide-nano urea combinations”

✓ located verbatim in the source · abstract, characters 1174–1326
t0

“Aerobic Rice (Oryza sativa L.)”

✓ located verbatim in the source · title, characters 75–105

Title

Effect of Nano Urea and Post-emergence Herbicides on Growth Performance of Aerobic Rice (Oryza sativa L.)

Namitha Krishna; M. A. Nishan; P. Shalini Pillai; et al. International Journal of Plant & Soil Science 2026. doi:10.9734/ijpss/2026/v38i56075

Other claims from this paper (3)

Record rev-4f70b94aa249d4e1e3c3c03c8b5197b899f84d00f93548f458d4c35c296178e7 · schema claims-v0.9 · position 2 in the model’s answer

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

802 papers: 725 positive, 77 negative or no effect

724 papers in the same direction as this claim · 57 in the opposite direction · 20 reporting no difference from an alternative

  1. no effect
    Weeding every 14 days did not increase rice grain yield.

    Weeds in slash‐and‐burn rice fields in northern Laos · 1997

    Opposite direction

  2. negative
    The non-allelopathic variety showed a grain yield reduction of up to 45-60% even with the low-dose herbicide application.

    Effect of allelopathic rice varieties combined with cultural management options on paddy field weeds · 2008

    Opposite direction

  3. negative
    Herbicide carryover reduced IRGA 417 grain yield by up to 55% when drilled 371 days after application.

    Carryover of Imazethapyr and Imazapic to Nontolerant Rice · 2010

    Opposite direction

  4. negative
    Late postemergence application at 7.9 and 4 g/ha reduced rice yield by 39 and 16%.

    Corn and Rice Response to Simulated Drift of Imazethapyr Plus Imazapyr · 2006

    Opposite direction

  5. negative
    Each day of delay in weeding created an average yield loss of 5.3 g m-2.

    Yields and Yield Gaps in Lowland Rice Systems and Options to Improve Smallholder Production · 2022

    Opposite direction

  6. negative
    PRE clomazone caused lower grain yield than DPRE.

    Response of Rice and Barnyardgrass (Echinochloa crus-galli) to Rates and Timings of Clomazone · 2005 · compared with DPRE timings

    Opposite direction

  7. negative
    Glyphosate application closer to rice planting decreased rice yield from 2866 to 2322 kg ha −1.

    Cover Crop Termination Timing on Rice Crop Production in a No‐Till System · 2013 · compared with rice planting day

    Opposite direction

  8. negative
    NERICA varieties and WAB 56-104 had 85% yield loss without weed control.

    The critical period of weed interference in upland rice in northern Guinea savanna: Field measurement and model prediction · 2013 · compared with weed-free plots

    Opposite direction

793 papers more in this group

See all 802 papers →

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

2,045 papers: 1,803 positive, 242 negative or no effect

1,802 papers in the same direction as this claim · 193 in the opposite direction · 49 reporting no difference from an alternative

  1. negative
    Green manure and rice straw nitrogen, alone or in combination with inorganic N, gave lower grain yield, agronomic efficiency and apparent nitrogen uptake than a standard split application of prilled urea.

    Long-term Comparison of the Agronomic Efficiency and Residual Benefits of Organic and Inorganic Nitrogen Sources for Tropical Lowland Rice · 1996 · compared with a standard split application of prilled urea

    Opposite direction

  2. negative
    Chaffy grain number and chaffy grain weight per 5 panicles increased significantly with enhancing nitrogen doses.

    Physiological response of rice (Oryza sativaL.) genotypes to elevated nitrogen applied under field conditions · 2014

    Opposite direction

  3. negative
    Excessive nitrogen yielded 2.68–6.31% less than appropriate nitrogen application.

    Excessive Nitrogen Application Leads to Lower Rice Yield and Grain Quality by Inhibiting the Grain Filling of Inferior Grains · 2022 · compared with appropriate nitrogen application (270 kg N ha−1)

    Opposite direction

  4. negative
    SCU reduced rice yield, though not significantly.

    Effects of different types of slow- and controlled-release fertilizers on rice yield · 2021

    Opposite direction

  5. negative
    Preflood urea applied 14 days early yielded lowest grain yield of rice.

    Ammonia Volatilization and Nitrogen Uptake for Conventional and Conservation Tilled Dry‐Seeded, Delayed‐Flood Rice · 2007

    Opposite direction

  6. no effect
    Applying 30 kg N ha−1 at each SPAD drop below 37.5 gave rice yields equivalent to 120 kg N ha−1 applied in three splits

    Chlorophyll Meter– and Leaf Color Chart–Based Nitrogen Management for Rice and Wheat in Northwestern India · 2002 · compared with 120 kg N ha−1 applied in three splits

    Opposite direction

  7. no effect
    Ammonium sulphate nitrate gave growth, yield and grain nitrogen results statistically at par with Super Net.

    EFFECT OF NITROGEN FERTILIZERS ON GROWTH, YIELD AND QUALITY OF HYBRID RICE (ORYZA SATIVA) · 2005 · compared with sulphur-containing nitrogen fertilizer-Super Net

    Opposite direction

  8. negative
    Rice straw plus urea mix-application (SU) gave lower rice plant growth, yield and nutrient accumulation.

    Application of different organic and mineral fertilizers on the growth, yield and nutrient accumulation of rice in a Japanese ordinary paddy field · 2010

    Opposite direction

2,036 papers more in this group

See all 2,045 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.