Intervention effectmodel-written summary

High fertilizer rate did not change sweet potato storage root weight.

A claim from Effect of Fertilizer and Watering Methods on Growth and Yields of Pot-grown Sweet Potato Genotypes · 1984

Intervention effectobservedoriginal resultno effectmeasured

Claim · model-written summary

High fertilizer rate did not change sweet potato storage root weight.

Taxon
sweet potatoesIpomoea batatase0
Organ / stage
storage rootse0
Treatment
A high fertilizer ratee0
Outcome
weighte0
Direction
note0
Setting
greenhouse potse0

Not reportedMaterialGeneCompoundInteractorInteractor roleSecond interactorSecond interactor roleComparatorValueQualifier

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

Ipomoea batatas
Ipomoea batatas · TaxonEarth100 · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0

“A high fertilizer rate reduced the number but not the weight, of storage roots of sweet potatoes [ Ipomoea batatas (L.) Lam.] grown in greenhouse pots.”

✓ located verbatim in the source · abstract, characters 9–160

Title

Effect of Fertilizer and Watering Methods on Growth and Yields of Pot-grown Sweet Potato Genotypes

M. C. Acock; J. O. Garner HortScience 1984. doi:10.21273/hortsci.19.5.687

Other claims from this paper (3)

Record rev-9ae39a0ecf15241d4c208298b3bb93be09c68b3cd2520aa5b324a7227c34f330 · schema claims-v0.9 · position 2 in the model’s answer

fertilization · growth · Ipomoea batatas (sweet potato)Results differ

63 papers: 53 positive, 10 negative or no effect

9 papers in the same direction as this claim · 53 in the opposite direction

  1. positive
    Increasing N from 50 to 100 kg·ha −1 increased adventitious-root number by 65%.

    Variation in Nitrogen Rate and Local Availability Alter Root Architecture Attributes at the Onset of Storage Root Initiation in ‘Beauregard’ Sweetpotato · 2013 · compared with 50

    Opposite direction

  2. positive
    Combined E. crassipes and poultry manure increased shoot length.

    Evaluation of different sweet potato varieties for growth, quality and yield traits under chemical fertilizer and organic amendments in sandy ferralitic soils · 2017

    Opposite direction

  3. positive
    Organomineral fertilizer gave sweet potato the highest mean vine number and fresh shoot weight.

    Evaluation of Animal Dungs and Organomineral Fertilizer for the Control ofMeloidogyne incognitaon Sweet Potato · 2015

    Opposite direction

  4. positive
    Dry matter increased with K fertilizer application.

    Nitrogen Uptake, Growth and Yield Response of Orange-fleshed Sweet potato ( Ipomoea Batatas L. ) To Potassium Supply · 2019

    Opposite direction

  5. positive
    Growth peaked at 80 kg ha -1 K fertilizer, then declined.

    Response of Soil Chemical Properties, Performance and Quality of Sweet Potato (Ipomoea Batatas L.) to Different Levels of K Fertilizer on a Tropical Alfisol · 2019

    Opposite direction

  6. positive
    The mixed RDF and vermicompost treatment increased leaf area and leaf area index.

    Effect of Organic and Inorganic Sources of NPK and Bio-fertilizer on Enhancement of Growth Attributes and Chlorophyll Content of Sweet Potato · 2018 · compared with Control

    Opposite direction

  7. positive
    Combined inorganic and organic fertilizer increased sweet potato leaf area by 336%.

    Effects of fertilizer types and different companion crops on the performance of sweet potato · 2006

    Opposite direction

  8. positive
    Fertilized tests had more roots for most grades except canners and total root number.

    Effects of Fertilization on Stability of Yield and Yield Components of Sweet Potato Clones · 1988 · compared with unfertilized tests

    Opposite direction

54 papers more in this group

See all 63 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.