Intervention effectmodel-written summary

Combined selenium and cobalt fertilizers enforced the performance of selenium in alfalfa.

A claim from Study on Regulation of Selenium and Cobalt Fertilizers to Alfalfa Growth and Its Effects on Soil Fertilization under the Conditions of Combined Application · 2008

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Combined selenium and cobalt fertilizers enforced the performance of selenium in alfalfa.

Taxon
alfalfaMedicago sativae0
Treatment
combination of selenium and cobalt fertilizerse1
Outcome
performance of seleniume1
Direction
enforcee1

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier

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

Medicago sativa
Medicago sativa · TaxonDrepanostoma · CC BY 4.0 · iNaturalist ↗

Verbatim

e0

“Application of selenium and cobalt combination in both regulating the growth of alfalfa [Medicago sativa L. ] in different growth duration and promoting soil fertility based on soil and climate conditions of Yellow river beach was studied in middle Henan Province.”

✓ located verbatim in the source · abstract, characters 0–264
e1

“Effective combination of selenium and cobalt fertilizers could not only enforce the performance of selenium,but also promote the content of available potassium in a depth of 0~20cm soil.”

✓ located verbatim in the source · abstract, characters 655–841

Title

Study on Regulation of Selenium and Cobalt Fertilizers to Alfalfa Growth and Its Effects on Soil Fertilization under the Conditions of Combined Application

Guo Xiao Prataculture & Animal Husbandry 2008

Other claims from this paper (5)

Record rev-b4359b051bd0c003611ee3452e0e822ea26647d31157ffd9525497acb0ee10d9 · schema claims-v0.9 · position 5 in the model’s answer

cobalt atom · nutrient: content · Medicago sativa (alfalfa)Positive and negative results

4 papers: 3 positive, 1 negative or no effect

2 papers in the same direction as this claim · 1 in the opposite direction

  1. negative
    Higher Co and Cr concentrations affected alfalfa nutrient uptake.

    Alleviation of Co and Cr toxic effects on alfalfa · 2013

    Opposite direction

  2. positive
    Both fertilizers significantly increased alfalfa hay selenium and cobalt contents.

    Effect of selenium and cobalt fertilizers on the forage yield and quality of alfalfa. · 2009

    Same direction

  3. positive
    Cobalt at 10-50 mg/kg soil increased nitrogen, phosphorus and potassium concentrations in alfalfa shoots and roots.

    EFFECT OF APPLICATION OF DIFFERENT LEVELS OF COBLT ON YEILD, NODULE FORMATION, NPK CONTENT AND PHOTOSYNTHETIC PIGMENTS OF ALFALFA (Medicago sativa L.) PLANT IN A CALCAREOUS SOIL · 2012

    Same direction

See all 4 papers →

selenium atom · nutrient: content · Medicago sativa (alfalfa)Positive and negative results

14 papers: 13 positive, 1 negative or no effect

12 papers in the same direction as this claim · 1 in the opposite direction

  1. no effect
    At 0.01 mg Mo L-1, 1.0 mg Se L-1 had no significant effect on Mo uptake in alfalfa.

    Influence of Binary Interactions of Arsenate, Molybdate, and Selenate on Yield and Composition of Alfalfa · 1989

    Opposite direction

  2. positive
    First-year Selcote maintained alfalfa selenium above 100 μg kg‐1 in the next year at one location.

    Effects of Selcote® ultra and sodium selenate (laboratory versus commercial grade) on selenium concentration in feed crops · 1995

    Same direction

  3. positive
    Foliar Se, Zn and Cu fertilization significantly increased the Se, Zn and Cu contents of alfalfa hay

    FOLIAR APPLICATION OF SELENIUM, ZINC AND COPPER IN ALFALFA (Medicago sativa L.) BIOFORTIFICATION · 2019 · compared with control without fertilization

    Same direction

  4. positive
    Foliar Se application markedly improved Se uptake by alfalfa.

    Effects of selenium on herbage yield, selenium nutrition and quality of alfalfa. · 2010

    Same direction

  5. positive
    Alfalfa absorbed more Se under homogeneous than heterogeneous P and Se supply.

    Phosphorus and selenium uptake, root morphology, and carboxylates in the rhizosheath of alfalfa (Medicago sativa) as affected by localised phosphate and selenite supply in a split-root system · 2021 · compared with supplied heterogeneously

    Same direction

  6. positive
    Selenium treatment increased alfalfa silage selenium content.

    Ensiling Characteristics, Bacterial Community Structure, Co-Occurrence Networks, and Their Predicted Functionality in Alfalfa Haylage Silage with or Without Foliar Selenium Application · 2024

    Same direction

  7. positive
    Both fertilizers significantly increased alfalfa hay selenium and cobalt contents.

    Effect of selenium and cobalt fertilizers on the forage yield and quality of alfalfa. · 2009

    Same direction

  8. positive
    Selenium increased total selenium in alfalfa shoots and roots.

    Transcriptomic insights into selenium‐mediated mitigation of low‐temperature stress in alfalfa · 2025

    Same direction

5 papers more in this group

See all 14 papers →

fertilization · nutrient: content · Medicago sativa (alfalfa)Positive and negative results

59 papers: 49 positive, 10 negative or no effect

48 papers in the same direction as this claim · 9 in the opposite direction · 1 reporting no difference from an alternative

  1. no effect
    Potassium rate had no reported effect on IVDDM, Fe, or AI concentrations.

    Effects of Potassium Topdressing a Low Fertility Silt Loam Soil on Alfalfa Herbage Yields and Composition and on Soil K Values1 · 1975

    Opposite direction

  2. negative
    Nitrogen fertilization increased herbage nitrate in 1982.

    Nitrogen Nutrition and Yield of Seedling Alfalfa as Affected by Ammonium Nitrate Fertilization1 · 1985

    Opposite direction

  3. no effect
    Nitrogen fertilizer hardly affected leaf nitrogen resorption.

    Nitrogen and phosphorus fertilizations alter nitrogen, phosphorus and potassium resorption of alfalfa in the Loess Plateau of China · 2019

    Opposite direction

  4. negative
    Potassium fertilizers depressed magnesium uptake more than sodium fertilizers.

    Effects of fertiliser potassium : sodium ratio on yield and concentration of sodium, potassium, and magnesium in lucerne and white clover · 1979 · compared with Na fertilisers

    Opposite direction

  5. no effect
    Sulfur fertilization did not increase forage sulfur content in nonirrigated alfalfa.

    Sulfur fertilization of two aquic hapludalf soils: I. Effect on alfalfa yield and quality · 1984

    Opposite direction

  6. no effect
    Increasing Mo in the nutrient solution had no significant effect on Se concentration and uptake by alfalfa roots.

    Influence of Binary Interactions of Arsenate, Molybdate, and Selenate on Yield and Composition of Alfalfa · 1989

    Opposite direction

  7. no effect
    Potassium fertilization did not affect phosphorus uptake from soil.

    The Effect of Time of Top‐Dressing on Uptake of Phosphorus and Potassium by an Established Stand of Alfalfa · 1955

    Opposite direction

  8. no effect
    Topdressing with copper sulfate did not affect the Cu concentration in alfalfa tissue.

    Micronutrient topdressing of alfalfa (medicago sativa L.) on a udollic albaqualf · 1972

    Opposite direction

50 papers more in this group

See all 59 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.