Intervention effectmodel-written summary

100 kg/ha Fe increased yield by more than 2,100 kg/ha at the maximum.

A claim from Iron and Zinc Response of Chlorotic Rice Grown on Calcareous Soils1 · 1971

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

100 kg/ha Fe increased yield by more than 2,100 kg/ha at the maximum.

Treatment
application of 100 kg/ha of Fee0
Outcome
yielde0
Direction
increasee0
Value
over 2,100 kg/hae0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingQualifier

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

“A maximum yield increase of over 2,100 kg/ha was obtained with the application of 100 kg/ha of Fe (from Fe 2 (SO 4 ) 3 ).”

✓ located verbatim in the source · abstract, characters 463–584
t0

“Chlorotic Rice”

✓ located verbatim in the source · title, characters 26–40

Title

Iron and Zinc Response of Chlorotic Rice Grown on Calcareous Soils1

D. G. Westfall; W. B. Anderson; R.J. Hodges Agronomy Journal 1971. doi:10.2134/agronj1971.00021962006300050013x

Other claims from this paper (6)

Record rev-e4466ed6705c9653229a9f7eb6e83dddd924a40560909b8ad35e2daf9f3bde80 · schema claims-v0.9 · position 5 in the model’s answer

iron atom · yield · Oryza sativa (rice)Results differ

71 papers: 57 positive, 14 negative or no effect

56 papers in the same direction as this claim · 13 in the opposite direction · 1 reporting no difference from an alternative

  1. positive
    The grain yield increase in response to iron application was more significant and dose dependent in IET-1444 than in Jaya.

    Effect of Zinc and Iron Supply on Production Potential of Rice (Oryza sativa L.) · 1996 · compared with Jaya

    Same directionCites this paper

  2. negative
    Iron toxicity reduced rice yields by 16–78 %, averaging 43 %.

    Rice Yield Gap due to Iron Toxicity in West Africa · 2008 · compared with referential yield obtained in a non‐iron‐toxic site

    Opposite direction

  3. 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

  4. negative
    Iron toxicity reduced rice grain yield by 34.2% in the field.

    Tolerance of rice germplasm to iron toxicity stress and the relationship between tolerance, Fe2+, P and K content in the leaves and roots · 2012

    Opposite direction

  5. no effect
    Iron application method did not affect grain yield.

    Effect of Iron Application on Rice Plants in Improving Grain Nutritional Quality in Northeastern of Thailand · 2022

    Opposite direction

  6. negative
    Addition of surplus Fe++ at the booting and early ripening stage decreased rice yield extremely.

    Studies on the Nutrition of Rice Plant with Reference to the Occurrence of the So-called "Akagare" Disease : VI. Changes in the growth, nutrients-absorption and metabolism in plant as influenced by the excessive supply of ferrous iron · 1960

    Opposite direction

  7. negative
    High Fe (742 μM Fe) reduced rice grain yield at the reproductive stage.

    Exogenous Copper Application for the Elemental Defense of Rice Plants against Rice Leaffolder (Cnaphalocrocis medinalis) · 2022

    Opposite direction

  8. no effect
    Additional iron did not change rice yield or iron or manganese uptake.

    Response to iron and manganese application as affected by their availability in a Typic Natraqualf · 1994

    Opposite direction

62 papers more in this group

See all 71 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.