Intervention effectmodel-written summary

Application of 40 kg N/ha significantly increased mean yields of green leaf, cured leaf and bright leaf of tobacco.

A claim from Effect of conjunctive use of FYM and nitrogen on yield, quality and economic of FCV tobacco (Nicotiana tabacum) · 2001

Intervention effectobservedoriginal resultpositivesignificant (as stated)measured

Claim · model-written summary

Application of 40 kg N/ha significantly increased mean yields of green leaf, cured leaf and bright leaf of tobacco.

Treatment
Application of 40 kg N/hae3
Outcome
mean yieldse3
Direction
increasede3
Value
9.5, cured leaf by 8.0, bright leaf by 12.8e3
Comparator
20 kg N/ha applicatione4

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingQualifier

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

t0

“FCV tobacco (Nicotiana tabacum)”

✓ located verbatim in the source · title, characters 80–111
e3

“Application of 40 kg N/ha, being comparable with 60 kg N/ha, significantly increased mean yields of green leaf by 9.5, cured leaf by 8.0, bright leaf by 12.8, grade index by 8.1 and cured leaf production efficiency by 7.9%”

✓ located verbatim in the source · abstract, characters 861–1083
e4

“the lamina N and K uptake by 18.3 and 17.1%, respectively; the residual soil available N by 4.2% compared with those of 20 kg N/ha application”

✓ located verbatim in the source · abstract, characters 1085–1227

Title

Effect of conjunctive use of FYM and nitrogen on yield, quality and economic of FCV tobacco (Nicotiana tabacum)

S.V. KRISHNA REDDY; S. KASTURI KRISHNA; K. DEO SINGH; et al. Indian Journal of Agronomy 2001. doi:10.59797/ija.v53i4.4869

Other claims from this paper (9)

Record rev-22738a7b6a052d027d3ae774c4670832b7d01e7d20d06bc7ec70f871811642f0 · schema claims-v0.9 · position 8 in the model’s answer

nitrogen · yield · Nicotiana tabacum (tobacco)Results differ

103 papers: 85 positive, 18 negative or no effect

84 papers in the same direction as this claim · 15 in the opposite direction · 3 reporting no difference from an alternative

  1. positive
    The treatment increased yield, system productivity, profit, and benefit to cost ratio.

    Effect of rice (Oryza sativa) stubble and nitrogen on performance of tobacco (Nicotiana tabacum) in rice-tobacco cropping system · 2001

    Same directionCited by this paper

  2. negative
    Reducing broadcast nitrogen to 168 kg N ha−1 reduced yield 10%.

    Relationships among Soil Nitrate, Leaf Nitrate, and Leaf Yield of Burley Tobacco · 1999

    Opposite direction

  3. no effect
    At higher K levels, increasing N rates produced no change in cured leaf yield of burley tobacco.

    Nitrogen and Potassium Fertilization Effects on Yield and Quality of Burley Tobacco · 1987

    Opposite direction

  4. negative
    Nutrient-use efficiency measures were higher at lower N and K levels and declined as rates increased.

    Productivity, leaf quality and nutrient-use efficiency of FCV tobacco (Nicotiana tabacum) genotypes to levels of N and K application under irrigated Alfisols of Andhra Pradesh · 2017 · compared with lower levels of N and K

    Opposite direction

  5. no effect
    Final tobacco leaf yield did not differ among fertilizer treatments.

    VERIFICATION OF NITROGEN AND PHOSPHORUS APPLICATION RATES TO FLUE-CURED TOBACCO · 2017 · compared with treatments imposed

    Opposite direction

  6. negative
    Lower N application reduced cured leaf yield in tobacco cultivars K326 and NC95.

    Genetics influence postharvest measurements of flue‐cured tobacco more than nitrogen application rate · 2020

    Opposite direction

  7. no effect
    Nitrogen sidedressing did not increase tobacco early or total yields relative to initial planting application.

    EFFECTS OF 2-CHLOROETHYLPHOSPHONIC ACID AND NITROGEN FERTILIZER ON FLUE-CURED TOBACCO GROWTH AND MATURITY · 1977 · compared with initial planting application of 34 kg N/ha

    Opposite direction

  8. negative
    All fertilizer nitrogen as NH 4 gave the lowest cured-leaf yield in the first season.

    Effects of Soil Fumigation and the Form of Nitrogen on the Growth, Yield, and Value of Tobacco Grown on Two Soil Types. I. Plant Growth and Yield1 · 1971

    Opposite direction

94 papers more in this group

See all 103 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.