Intervention effectmodel-written summary

Most nematicides gave positive yield results for tobacco, with apparent variety differences.

A claim from Yield Responses in Relation to the Chemical Control of Root‐knot Nematodes in Southern Italy · 1973

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Most nematicides gave positive yield results for tobacco, with apparent variety differences.

Treatment
most of the nematicidese0
Outcome
yield responsee1
Direction
positivee0
Qualifier
important differences according to the variety considerede0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValue

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

Nicotiana tabacum
Nicotiana tabacum · TaxonJom / Joachim Müllerchen · CC BY 2.5 · Wikimedia Commons ↗

Verbatim

e0

“On tobacco, most of the nematicides gave positive results, but it appeared that there might be important differences according to the variety considered.”

✓ located verbatim in the source · abstract, characters 426–579
e1

“yield response of tobacco, tomato and egg‐plant”

✓ located verbatim in the source · abstract, characters 82–129

Title

Yield Responses in Relation to the Chemical Control of Root‐knot Nematodes in Southern Italy

F. Lamberti EPPO Bulletin 1973. doi:10.1111/j.1365-2338.1973.tb02292.x

Other claims from this paper (2)

Record rev-f6146b78bab9c43be85c2b57240be315842a54c202197707b10f5fbed9302f92 · schema claims-v0.9 · position 1 in the model’s answer

insecticide · yield · Nicotiana tabacum (tobacco)Positive and negative results

10 papers: 5 positive, 5 negative or no effect

4 papers in the same direction as this claim · 4 in the opposite direction · 1 reporting no difference from an alternative

  1. no effect
    In the second year, with lower nematode population, no nematicidal treatment increased yield.

    EFFECTS OF NEMATICIDES ON PRATYLENCHUS PENETRANS, SOIL MICROFLORA, AND FLUE-CURED TOBACCO · 1972

    Opposite direction

  2. no effect
    Nematicide treatments showed no significant yield difference from the control.

    Research Papers: Response of Flue Cured Tobacco to Application of Nematicides · 1979 · compared with control

    Opposite direction

  3. no effect
    Mixtures did not significantly change tobacco agronomic traits, cured-leaf yield value or yield versus CK.

    Experiment on the Influences of Four Mixtures of Insecticide and Fertilizer Including Oligosaccharin on the Disease Resistance and Yield and Quality of Flue-cured Tobacco · 2009 · compared with CK

    Opposite direction

  4. negative
    In 1994 the mixture of SpltNPV and insecticide gave significantly lower tobacco yield than untreated plots.

    Field efficacy of nucleopolyhedrovirus against armyworm, Spodoptera litura F. on tobacco · 2002 · compared with untreated plots

    Opposite direction

  5. no effect
    A fumigant plus a lower insecticidal rate of a soil insecticide/nematicide had a cost comparable to the least expensive nonfumigant nematicide when foliar insecticide costs were included.

    Analysis of 1,3-Dichloropropene for Control of Meloidogyne spp. in a Tobacco Pest Management System. · 2001 · compared with the least expensive non-fumigant nematicide

    No difference from an alternative

  6. positive
    All nematicides tested increased tobacco yield in 1973.

    EFFECTS OF CERTAIN NEMATICIDES ON SOIL NITROGEN, SOIL NITRIFIERS, AND POPULATIONS OF PRATYLENCHUS PENETRANS IN FLUE-CURED TOBACCO · 1977

    Same direction

  7. positive
    Nematicides other than fenamiphos increased tobacco yield.

    Effects of nematicides on populations of soil microflora and Pratylenchus penetrans, soil enzymes and flue-cured tobacco · 1995

    Same direction

  8. positive
    Nematicide plots produced increased tobacco yields.

    Other Contrubitions: Effects of Nematicides on the Nematode Populations and Yield of Tobacco · 1975

    Same direction

1 paper more in this group

See all 10 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.