Intervention effectmodel-written summary

K produced a positive NDVI response of 15%.

A claim from Prediction of Maize Yields from In-Season GreenSeeker Normalized Difference Vegetation Index and Dry Biomass as Influenced by Different Nutrient Combinations · 2020

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

K produced a positive NDVI response of 15%.

Taxon
MaizeZea mayst0
Treatment
Ke0
Outcome
NDVI responsese0
Direction
Positivee0
Value
15%e0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingQualifier

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

Zea mays
Zea mays · TaxonAkwugo · CC BY-SA 4.0 · Wikimedia Commons ↗

Verbatim

t0

“Prediction of Maize Yields from In-Season GreenSeeker Normalized Difference Vegetation Index and Dry Biomass as Influenced by Different Nutrient Combinations”

✓ located verbatim in the source · title, characters 0–157
e0

“Positive NDVI responses of 56%, 14%, 15%, and 15% were recorded with N, P, K, and combined Ca+Mg+Zn+B+S, respectively.”

✓ located verbatim in the source · abstract, characters 709–827

Title

Prediction of Maize Yields from In-Season GreenSeeker Normalized Difference Vegetation Index and Dry Biomass as Influenced by Different Nutrient Combinations

Hillary M. O. Otieno; George N. Chemining’wa; Shamie Zingore Journal of Agricultural Science 2020. doi:10.5539/jas.v13n1p165

Other claims from this paper (19)

Record rev-16003dd59e6a2db029d54525787092914388da738ea4555523a6e1574d8ff7bc · schema claims-v0.9 · position 9 in the model’s answer

potassium · growth · Zea mays (maize)Results differ

114 papers: 99 positive, 15 negative or no effect

98 papers in the same direction as this claim · 15 in the opposite direction

  1. no effect
    K did not influence maize height.

    Nitrogen, phosphorus and potassium effects on the incidence of Striga asiatica (L.) Kuntze in maize · 1985

    Opposite direction

  2. no effect
    P and K fertilizer treatment had no measurable influence on total root length of corn.

    Yearly variation of root distribution with depth in relation to nutrient uptake and corn yield · 1987

    Opposite direction

  3. negative
    Low K delayed maize exodermis establishment.

    Exodermis and Endodermis Respond to Nutrient Deficiency in Nutrient-Specific and Localized Manner · 2020

    Opposite direction

  4. no effect
    Average leaf area was not significantly affected by potassium levels and timings.

    Phenology, Leaf Area and Yield of Spring Maize (Cv. Azam) as Affected by Levels and Timings of Potassium Application · 2007

    Opposite direction

  5. no effect
    Potassium application did not affect maize growth in clay rich soil.

    Growth and potassium uptake by Maize (Zea mays L.) in three soils differing in clay contents · 2005

    Opposite direction

  6. no effect
    Potassium did not affect maize growth.

    Effects of Nitrogen and Potassium Combinations on Yields and Infestations of Maize by Busseola fusca (Lepidoptera: Noctuidae) in the Humid Forest of Cameroon · 2008

    Opposite direction

  7. negative
    Potassium deficiency increased the shoot RNA to dry matter ratio by as much as 40%.

    Effects of Potassium Nutrition on Ribonucleic Acid and Ribonuclease in Zea mays L. · 1968

    Opposite directionAbout lacking this nutrient, so it counts the other way round

  8. negative
    Nutrient-deficiency treatments significantly decreased maize plant height and leaf area index relative to NPK.

    Effects of long-term fertilization on the growth and photosynthesis of summer maize in fluvo-aquic soil. · 2010 · compared with NPK treatments

    Opposite direction

105 papers more in this group

See all 114 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.