Intervention effectmodel-written summary

Chitosan applied by seed soaking plus soil application four times across the cropping season significantly increased rice yield relative to the other treatments.

A claim from Application of chitosan in rice production · 2008

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Chitosan applied by seed soaking plus soil application four times across the cropping season significantly increased rice yield relative to the other treatments.

Treatment
application of chitosan by seed soaking and soil application four times throughout cropping seasone1
Outcome
rice yielde1
Direction
increasede1
Comparator
the other treatmentse1
Setting
cropping seasone1

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleValueQualifier

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

e1

“application of chitosan by seed soaking and soil application four times throughout cropping season significantly increased rice yield over the other treatments”

✓ located verbatim in the source · abstract, characters 581–740

Title

Application of chitosan in rice production

S. Boonlertnirun; C Boonraung; R Suvanasara Journal of Metals Materials and Minerals 2008

Other claims from this paper (1)

Record rev-eaadc360077cbf796379fb616caf05ecf0603203f11bb47e9b83536d6cb32099 · schema claims-v0.9 · position 1 in the model’s answer

chitosan · yield · Oryza sativa (rice)Results agree

9 papers: 9 positive, 0 negative or no effect

8 papers in the same direction as this claim

  1. positive
    Foliar chitosan with conventional cultivation increased rice yield by up to 26% relative to conventional cultivation alone.

    Investigating the impact of oligo-chitosan on the growth dynamics and yield traits of Oryza sativa L. ‘BRRI dhan29’ under subtropical conditions · 2024 · compared with the conventional method

    Same directionCites this paper

  2. positive
    Combined salicylic acid and chitosan mitigated high-temperature impairment of rice pollen viability by 75%.

    Salicylic acid and chitosan mitigate high temperature stress of rice via growth improvement, physio-biochemical adjustments and enhanced antioxidant activity · 2023

    Same direction

  3. positive
    Polymeric chitosan soaking plus four foliar sprays significantly increased tiller number and dry matter.

    Effects of Molecular Weight of Chitosan on Yield Potential of Rice Cultivar Suphan Buri 1 · 2006

    Same direction

  4. positive
    Chitosan increased leaf number, tillers and leaf area.

    Physiological and photosynthesis enhancement of Thai rice (Oryza sativa L.) cultivarsby biochitosan · 2016

    Same direction

  5. positive
    The 100 mg/L LMWCHT treatment produced the highest rice yield.

    Effect of foliar application of low molecular weight chitosan on rice growth and yield in the Sudan Savanna Zone of Ghana · 2025

    Same direction

  6. positive
    Chitosan SL increased rice yield by up to 25% compared with synthetic pesticide control.

    Aplikasi kitosan untuk penekanan kejadian penyakit dan peningkatan hasil panen tanaman padi (Oryza sativa L.) · 2022 · compared with synthetic pesticides application as control (P0)

    Same direction

  7. positive
    CNPT enhanced tiller number.

    Evaluation of Tricyclazole-Encapsulated Chitosan Nanoparticles Against Blast Disease and on Physiological Attributes of Rice · 2025

    Same direction

  8. positive
    Irradiated chitosan at 50 ppm outperformed control and 100 ppm for growth and yield.

    Effect of wider spacing, nutrient levels and bio stimulant on growth and yield of rice (Oryza sativa L.) under transplanted field conditions · 2025 · compared with control and 100 ppm

    Same direction

See all 9 papers →

seed treatment · yield · Oryza sativa (rice)Positive and negative results

166 papers: 159 positive, 7 negative or no effect

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

  1. positive
    The coating increased crop yield by 5% relative to traditional coating.

    Preparation and application of a novel environmentally friendly organic seed coating for rice · 2009 · compared with traditional rice seed coating agent

    Same directionCites this paper

  2. no effect
    The early benefits did not extend to grain yield.

    Seed hydropriming in upland rice improves germination and seed vigor and has no effects on crop cycle and grain yield · 2016

    Opposite direction

  3. no effect
    Azospirillum seed treatment did not significantly improve yield parameters of rice in the nursery.

    Seed biofortification with Azospirillum spp. for improvement of seedling vigour and productivity in rice (Oryza sativa L.). · 2000

    Opposite direction

  4. no effect
    Under transplanting, primed hybrid rice seed did not differ significantly from non-primed seed in plant height, panicle number per plant and panicle length.

    Improving germination, seedling establishment and biochemical characters of aged hybrid rice seed by priming with KNO3 + PVA · 2010 · compared with non-primed seed

    Opposite direction

  5. negative
    Seed coating suppressed growth and yield of rice.

    Seed Coating with Organomineral Fertilizer, an Alternative Method to Improve the Efficiency of Farming · 2020 · compared with uncoated seeds

    Opposite direction

  6. no effect
    Within-cultivar yields were similar with and without thiamethoxam across herbicide treatments.

    Influence of a thiamethoxam seed treatment on acetolactate synthase–inhibiting herbicide–induced injury to inbred and hybrid imidazolinone-resistant rice · 2019 · compared with without a thiamethoxam seed treatment

    Opposite direction

  7. no effect
    Seed soaking time had no significant effect on dry matter accumulation of hybrid rice seedlings.

    Effects of Different Seed Soaking Time on Emergence and Seedling Growth of Hybrid Rice Seeds · 2015

    Opposite direction

  8. no effect
    Hydro-primed (T2) and osmo-primed (T3) seeds did not differ significantly from non-primed seeds (T1) in agronomic performance under both RS and WW in both planting seasons.

    Response of Primed Rice (Oryza sativa L.) Seeds towards Reproductive Stage Drought Stress · 2021 · compared with T1

    No difference from an alternative

157 papers more in this group

See all 166 papers →

climate site · yield · Oryza sativa (rice)Positive and negative results

172 papers: 110 positive, 62 negative or no effect

109 papers in the same direction as this claim · 59 in the opposite direction · 3 reporting no difference from an alternative

  1. negative
    Rice yield in the region was projected to decline by 17.81% for the 2020s relative to the 1997-2006 average under the ECHAM4 A2 scenario

    Evaluation of climate change impacts and adaptation measures for rice cultivation in Northeast Thailand · 2010 · compared with average yield during 1997-2006

    Opposite direction

  2. negative
    Ozone decreased grain weight in rice.

    Genetic dissection of ozone tolerance in rice (Oryza sativa L.) by a genome-wide association study · 2014 · compared with control conditions

    Opposite direction

  3. negative
    Season-long barnyardgrass interference reduced Lemont grain yield by 301 kg ha –1 per weed plant.

    Density and Spatial Interference of Barnyardgrass (Echinochloa crus-galli) with Rice (Oryza sativa) · 1991

    Opposite direction

  4. negative
    Projected climate changes can reduce rice yield in all three growing seasons.

    Evaluating and Adapting Climate Change Impacts on Rice Production in Indonesia: A Case Study of the Keduang Subwatershed, Central Java · 2021

    Opposite direction

  5. negative
    Rice grain yield and nitrogen uptake were lowest after wet season cereal crops.

    Nitrogen contributed by grain legumes to rice grown in rotation on the Cununurra soils of the Ord Irrigation Area, Western Australia · 1987 · compared with Sesbania

    Opposite direction

  6. negative
    Each red rice plant per square metre reduced grain yield of Newbonnet and Lemont by 178 and 272 kg per hectare, respectively.

    Interference of Red Rice (Oryza sativa) Densities in Rice (O. sativa) · 1991

    Opposite direction

  7. negative
    Season-long weeds reduced rice yield by 68% in 2006.

    Evaluation of Bispyribac-sodium for Weed Control in Transplanted Rice · 2009

    Opposite direction

  8. negative
    Maintaining soil water by season-long flush irrigation dramatically lowered rice nutrient uptake and yields.

    Nutrient uptake by rice in response to water management · 1994

    Opposite direction

163 papers more in this group

See all 172 papers →

3 of 4 groups shown: named compounds and organisms first, then groups whose results differ (checked claim by claim), then those with positive and negative results, then the smaller groups.

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.