Intervention effectmodel-written summary

Pre-harvest foliar applications increased the number of fruits and fruit weight per tree compared with control

A claim from Improving Washington Navel Orange Fruits by Some Natural Pre-Harvest Foliar Applications A- Mineral Content, Yield and Fruit Quality · 2015

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Pre-harvest foliar applications increased the number of fruits and fruit weight per tree compared with control

Taxon
Washington Navel Oranget0
Treatment
pre-harvest foliar applications with Putrescinee1
Outcome
number of fruits and weight kg per treee2
Direction
increasede2
Comparator
controle2

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValueQualifier

Verbatim

t0

“Improving Washington Navel Orange Fruits”

✓ located verbatim in the source · title, characters 0–40
e1

“by pre-harvest foliar applications with Putrescine at (2, 4 and 6 mM)”

✓ located verbatim in the source · abstract, characters 364–433
e2

“all foliar applications improved leaf mineral contents and increased yield as (number of fruits and weight kg per tree), average fruit weight compared with control”

✓ located verbatim in the source · abstract, characters 1094–1257

Title

Improving Washington Navel Orange Fruits by Some Natural Pre-Harvest Foliar Applications A- Mineral Content, Yield and Fruit Quality

Thanaa Ezz; Mahmoud Ali; Ekbal Ahmed; et al. Journal of the Advances in Agricultural Researches/Journal of the Advances in Agricultural Researches 2015. doi:10.21608/jalexu.2015.161143

Other claims from this paper (7)

Record rev-a986a52b60b3ea4cccfeda9b2e2bef38ea540c76f3e1b0cf70ae33bedf3acc5a · schema claims-v0.9 · position 2 in the model’s answer

putrescine · yield · Citrus sinensis (sweet orange)Results agree

4 papers: 4 positive, 0 negative or no effect

3 papers in the same direction as this claim

  1. positive
    Preharvest sprays decreased creasing and preharvest fruit drop of Washington navel oranges.

    Effect of Putrescine, GA3, 2, 4-D, and Calcium on Extending Harvest Season of Navel Orange · 2010

    Same directionCited by this paper

  2. positive
    The combined treatment gave the highest fruit set, retained fruit count and fruit weight.

    Effect of Foliar Application with Multi-Micronutrients and Polyamines on Productivity and Storeability of Valencia Oranges · 2018

    Same direction

  3. positive
    The 100 ppm PUT plus 3% K2SO4 spray gave the highest vegetative growth and fruit set and retention.

    Effect of Foliar Application with Putrescine and Potassium Sulphate on VegetativeGrowth, Fruit Set, Fruit Size, Fruit Quality and Yield of Washington Navel Orange · 2021

    Same direction

See all 4 papers →

application · yield · Citrus sinensis (sweet orange)Positive and negative results

77 papers: 65 positive, 12 negative or no effect

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

  1. positive
    All spray treatments decreased orange fruit creasing and drop at both harvest dates.

    Effect of putrescine, GA3, 2, 4-D, and calcium on delaying peel senescence and extending harvest season of navel orange · 2012

    Same directionCited by this paper

  2. positive
    Preharvest sprays decreased creasing and preharvest fruit drop of Washington navel oranges.

    Effect of Putrescine, GA3, 2, 4-D, and Calcium on Extending Harvest Season of Navel Orange · 2010

    Same directionCited by this paper

  3. no effect
    The same materials at 13 weeks after midbloom did not reduce summer drop.

    Growth Regulators, Fruit Drop, Yield, and Quality of Navel Orange in Florida · 1984

    Opposite direction

  4. no effect
    Zn sprays did not improve yield, fruit number or average fruit weight of orange and grapefruit trees.

    Productivity, growth, and leaf mineral composition of orange and grapefruit trees foliar‐sprayed with zinc and manganese · 1991

    Opposite direction

  5. negative
    Calcium sprays as CaCl2 applied early in the season at 0.33% caused unacceptable fruit drop.

    Calcium-spray treatments for ameliorating albedo breakdown in navel oranges · 2002

    Opposite direction

  6. no effect
    Foliar Zn and B did not significantly affect days to fruit set, fruit set percentage or fruit drop percentage.

    EFFECT OF FOLIAR APPLICATION OF Zn AND B ON FRUIT PRODUCTION AND PHYSIOLOGICAL DISORDERS IN SWEET ORANGE CV. BLOOD ORANGE · 2010

    Opposite direction

  7. negative
    At Griffith, 2% sprays of 238 oil significantly reduced yield.

    Phytotoxicity of petroleum spray oils to Valencia orange, Citrus sinensis (L.) Osbeck, in New South Wales · 1989

    Opposite direction

  8. no effect
    Overall gibberellin sprays did not increase fruit set in Washington Navel orange.

    Effect of gibberellin sprays on fruit set of Washington Navel orange trees · 1965

    Opposite direction

68 papers more in this group

See all 77 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.