Intervention effectmodel-written summary

Delaying onion sowing from mid-August to late September decreased ware-size yields.

A claim from Effects of Date of Sowing on Overwintered Onion Varieties in Pembrokeshire · 1978

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Delaying onion sowing from mid-August to late September decreased ware-size yields.

Taxon
onionsAllium cepae0
Treatment
Delay in sowing from mid-August to late Septembere0
Outcome
yields of ware-size onionse0
Direction
decreasede0
Comparator
mid-Auguste0
Setting
Pembrokeshiret0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleValueQualifier

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

Allium cepa
Allium cepa · TaxonMehdi · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“Delay in sowing from mid-August to late September increased plant losses during the winter and decreased yields of ware-size onions”

✓ located verbatim in the source · abstract, characters 114–245
t0

“Pembrokeshire”

✓ located verbatim in the source · title, characters 61–74

Title

Effects of Date of Sowing on Overwintered Onion Varieties in Pembrokeshire

E. J. Allen; J. L. Jones; P. J. Salter The Journal of Agricultural Science 1978. doi:10.1017/s0021859600048802

Other claims from this paper (2)

Record rev-41b31baa3eefca484b9412bdff0e29540edad85d56d91edebfb548dbbdcc83e9 · schema claims-v0.9 · position 2 in the model’s answer

sowing time · yield · Allium cepa (onion)Positive and negative results

27 papers: 18 positive, 9 negative or no effect

8 papers in the same direction as this claim · 18 in the opposite direction

  1. positive
    Early planting gave higher onion bulb and seed yields than later planting.

    Effect of mother bulb size and planting time on growth, bulb and seed yield of onion · 1970 · compared with 15 and 30 November

    Opposite direction

  2. positive
    Mid-November planting gave the highest significant seed yield per plant and per fed.

    Influence of Planting Date on the Production and Quality of Onion Seeds · 2012

    Opposite direction

  3. positive
    Transplanting on the third date, 25th July, gave the highest bulb yield, 197.54 q/ha.

    Effect of Different Varieties and Planting Time on Kharif Onion Production in Lower Shivalik Hills of Himachal Pradesh · 2017 · compared with transplanting dates

    Opposite direction

  4. positive
    The first onion sowing date gave higher yield at both planting densities.

    Effect of sowing dates and planting density on the infestation of onion maggot (Delia alliaria fonseca) in onion (Allium cepa l.) crops · 2015

    Opposite direction

  5. positive
    The first planting date gave the greatest fresh bulb weight after 120 days of storage.

    The influence of planting dates and field management on bulb quality and post-harvest losses of onion · 2022

    Opposite direction

  6. positive
    Early planting date significantly increased onion yield of the variety Safid e Paisaye.

    Optimizing the Planting Date for Onion Production · 2023

    Opposite direction

  7. positive
    Pendimethalin and quizalofop followed the top treatment for bulb yield.

    Effect of different herbicides on growth, yield and weed flora of onion (Allium cepa L.) · 2014 · compared with Oxyflurofen 23.5EC @ 2ml/L before planting and Quizalofop ethyl 5EC @ 3.5 ml/L at 30 DAT

    Opposite direction

  8. positive
    The highest onion bulb yield, 80.6 t ha−1, was obtained with oxyfluorfen at 75% recommended dose at the 22 October planting date.

    Effect of transplanting date and reduced doses of oxyfluorfen herbicide on weed control, yield and quality of onion (Allium cepaL.) in south of Iran · 2014 · compared with 100% recommended dose of this herbicide in all planting dates

    Opposite direction

18 papers more in this group

See all 27 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.