Intervention effectmodel-written summary

Root growth essentially ceased when plants were placed in a nitrogen atmosphere.

A claim from Effect of Duration and Timing of Low Soil Oxygen Content on Shoot and Root Growth · 1962

Intervention effectobservedoriginal resultnegativemeasured

Claim · model-written summary

Root growth essentially ceased when plants were placed in a nitrogen atmosphere.

Taxon
cotton, sunflower, and green beanse2
Treatment
nitrogen atmospheree1
Outcome
Root growthe1
Direction
essentially ceasede1

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier

Verbatim

e1

“Root growth essentially ceased when placed in the nitrogen atmosphere”

✓ located verbatim in the source · abstract, characters 154–223
e2

“All species studied, cotton, sunflower, and green beans, showed similar results”

✓ located verbatim in the source · abstract, characters 299–378

Title

Effect of Duration and Timing of Low Soil Oxygen Content on Shoot and Root Growth

J. Letey; L. H. Stolzy; G. B. Blank Agronomy Journal 1962. doi:10.2134/agronj1962.00021962005400010011x

Other claims from this paper (3)

Record rev-ef48b004366f0897bdca32c737bc619998ee2306d60a5baa8b9fb5f8683c280d · schema claims-v0.9 · position 2 in the model’s answer

nitrogen · growth · Helianthus annuus (common sunflower)Results differ

76 papers: 63 positive, 13 negative or no effect

12 papers in the same direction as this claim · 63 in the opposite direction

  1. positive
    High nitrate increased leaf area and specific leaf mass relative to low nitrate.

    Induction of leaf senescence by low nitrogen nutrition in sunflower (Helianthus annuus) plants · 2009 · compared with 2 mM nitrate

    Opposite direction

  2. positive
    Relieving nitrogen stress in mid vegetative growth restored final leaf number to the unstressed number.

    Leaf and Floret Production in Sunflower (Helianthus annuus L.) as Affected by Nitrogen Supply · 1983 · compared with unstressed number

    Opposite direction

  3. positive
    Nitrogen limitation reduced leaf area index in sunflower.

    Effects of nitrogen supply on canopy development of maize and sunflower · 2012

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

  4. positive
    Sunflower plants receiving 6 mM nitrate accumulated more dry matter than urea-grown plants.

    Distribution of Nitrogen during Growth of Sunflower (Helianthus annuus L.) · 1983 · compared with urea-grown plants

    Opposite direction

  5. positive
    Low nitrate or phosphate increased root:shoot ratio and uptake kinetic parameters.

    Nutrient-limited growth rates: quantitative benefits of stress responses and some aspects of regulation · 1995

    Opposite direction

  6. positive
    After bud initiation, a moderate N application rate accelerated shoot and root biomass accumulation at the S0 and S1 levels.

    Shoot and Root Biomass Allocation of Sunflower Varying with Soil Salinity and Nitrogen Applications · 2017

    Opposite direction

  7. positive
    At 120 kg N ha-1, the highest sunflower heights were 120 cm in 2003 and 138 cm in 2004.

    Response of sunflower (Helianthus annuus L.) to nitrogen application in a savanna Alfisol · 2010

    Opposite direction

  8. positive
    Nitrogen application improved leaf area, head size and filled seed percentage up to 60 kg/ha.

    Response of sunflower cultivars to plant density and nitrogen · 1985

    Opposite direction

67 papers more in this group

See all 76 papers →

nitrogen · growth · Phaseolus vulgaris (common bean)Positive and negative results

60 papers: 44 positive, 16 negative or no effect

15 papers in the same direction as this claim · 44 in the opposite direction

  1. positive
    A low N fertilization rate applied when soil N was low ensured early vigorous plant growth.

    Nitrogen Sources for Bean Seed Production1 · 1981

    Opposite direction

  2. positive
    Urea phosphate was generally more effective than single superphosphate for growth and salinity alleviation.

    Coupling effects of phosphorus fertilization source and rate on growth and ion accumulation of common bean under salinity stress · 2021 · compared with single superphosphate

    Opposite direction

  3. positive
    Nitrate- or urea-grown beans accumulated more dry matter than ammonium- or N2-grown beans.

    Expression of Nitrate and Nitrite Reductase Activities under Various Forms of Nitrogen Nutrition in Phaseolus vulgaris L. · 1983 · compared with NH(4) (+)- and N(2)-dependent plants

    Opposite direction

  4. positive
    Adequate nitrogen supply to roots favored lateral bud growth in dwarf bean.

    Nitrogen, Phosphorus, and Potassium Distribution in Relation to Apical Dominance in Dwarf Bean (Phaseolus vulgaris, c.v. Canadian Wonder) · 1968

    Opposite direction

  5. positive
    Nitrogen application produced a large growth response in bean.

    Diagnosis and correction of soil nutrient problems of common bean (Phaseolus vulgaris) in the Usambara Mountains of Tanzania · 1993

    Opposite direction

  6. positive
    Applied mineral nitrogen benefited vegetative growth of Negro Argel.

    Partitioning of nitrogen from biological fixation and fertilizer in Phaseolus vulgaris · 1987

    Opposite direction

  7. positive
    The highest plant height, leaf number and leaf area occurred under the high inorganic fertilizer treatment.

    The Influence of Organic and Inorganic Fertilizers on the Growth and Yield of Green Bean, Phaseolus vulgaris L. Grown in Dry and Rainy Season · 2017

    Opposite direction

  8. positive
    combination of seed inoculation, molybdenum application and nitrogen fertilization of 96 kg N/ha gave the highest plant height, branch number, plant fresh weight.

    Growth and Yield of Common Bean (Phaseolus Vulgaris L.) in Response to Rhizobium Inoculation, Nitrogen and Molybdenum Fertilization · 2009

    Opposite direction

51 papers more in this group

See all 60 papers →

nitrogen · growth · Gossypium hirsutum (cotton)Positive and negative results

153 papers: 129 positive, 24 negative or no effect

23 papers in the same direction as this claim · 129 in the opposite direction

  1. positive
    Low nitrogen supply restricted cotton sink development responses to high CO2.

    Interactions Between Rising CO2 Concentration and Nitrogen Supply in Cotton. I. Growth and Leaf Nitrogen Concentration · 1996

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

  2. positive
    N deficiency significantly reduced total dry weight of cotton by 7% at 76 DAP.

    Canopy development and photosynthesis of cotton as influenced by nitrogen nutrition · 1990 · compared with N‐sufficient plants

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

  3. positive
    Plant biomass nitrogen inputs were greater with vetch and vetch plus rye than rye or weeds.

    Nitrogen Storage with Cover Crops and Nitrogen Fertilization in Tilled and Nontilled Soils · 2008 · compared with rye and weeds with or without N

    Opposite direction

  4. positive
    Nitrogen fertilizer or manure increased simulated aboveground biomass for all crops.

    Soil organic carbon dynamics and crop yield for different crop rotations in a degraded ferruginous tropical soil in a semi-arid region: a simulation approach · 2011

    Opposite direction

  5. positive
    Reducing urea by 25% with surface biochar significantly increased active root absorption area, fresh weight and nitrogen agronomic efficiency.

    Biochar induced improvement in root system architecture enhances nutrient assimilation by cotton plant seedlings · 2021

    Opposite direction

  6. positive
    Bacterial coated urea at 120 kg ha -1 increased leaf area index and crop growth rate versus simple urea.

    Biochar and slow-releasing nitrogen fertilizers improved growth, nitrogen use, yield, and fiber quality of cotton under arid climatic conditions · 2021 · compared with simple urea

    Opposite direction

  7. positive
    Nitrogen starvation significantly reduced cotton shoot growth.

    The responses of lateral roots and root hairs to nitrogen stress in cotton based on daily root measurements · 2021 · compared with normal nitrogen

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

  8. positive
    May 10 sowing with 150 kg ha-1 nitrogen and 15 cm spacing produced taller cotton plants.

    Effect of Sowing Dates, Plant Spacing and Nitrogen Application on Growth and Productivity on Cotton Crop · 2011

    Opposite direction

144 papers more in this group

See all 153 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.