Intervention effectmodel-written summary

Urea alone produced high leaf area and shoot diameter.

A claim from EFFECT OF UREA, SOME MICRONUTRIENTS AND TWO GROWTH REGULATORS FOLIAR SPRAYS ON VEGETATIVE GROWTH, YIELD AND FRUIT QUALITY OF WASHINGTON NAVEL ORANGE TREES · 2011

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Taxon: WASHINGTON NAVEL ORANGE TREESt0
Treatment: Ureae0
Outcome: average leaf area and shoot diametere0
Direction: highestvaluese0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValueQualifier

Verbatim

e0
“spraying Urea&micronutrients (Zn, Mn, Fe and Cu), Urea and NAA achieved the highestvalues for average leaf area and shoot diameter”
✓ located verbatim in the source · abstract, characters 925–1055

t0
“WASHINGTON NAVEL ORANGE TREES”
✓ located verbatim in the source · title, characters 125–154

Title

EFFECT OF UREA, SOME MICRONUTRIENTS AND TWO GROWTH REGULATORS FOLIAR SPRAYS ON VEGETATIVE GROWTH, YIELD AND FRUIT QUALITY OF WASHINGTON NAVEL ORANGE TREES

Ensherah A. H. Tayeh; Eman A. A. El-Khalek; Zeinab A. I; et al. Fayoum Journal of Agricultural Research and Development /Fayoum Journal of Agricultural Research and Development 2011. doi:10.21608/fjard.2011.195643

Other claims from this paper (17)

Intervention effect Urea with micronutrients produced high leaf area and shoot diameter.
Intervention effect NAA produced high leaf area and shoot diameter.
Intervention effect Urea with micronutrients gave the highest shoot length.
Intervention effect GA3 gave high shoot length following urea with micronutrients.
Intervention effect Urea produced the highest leaf nitrogen content.
Intervention effect Micronutrients alone produced low leaf nitrogen content.
Intervention effect All spray treatments significantly increased fruit set versus control.
Intervention effect All spray treatments significantly reduced fruit drop versus control.
Intervention effect NAA reduced fruit drop more effectively than GA3.
Intervention effect Urea with micronutrients significantly increased fruit number and yield per tree.
Intervention effect NAA significantly increased fruit number and yield per tree.
Intervention effect Urea with micronutrients most effectively increased fruit and pulp weight.
Intervention effect GA3 also increased fruit and pulp weight.
Intervention effect Urea plus micronutrients slightly reduced juice acidity.
Intervention effect Urea plus micronutrients increased soluble solids, total sugars, ascorbic acid and soluble-solids-to-acid ratio.
Intervention effect GA3 increased juice ascorbic acid content.
Intervention effect NAA increased juice ascorbic acid content.

Record rev-a97aea6ea98d755a58921b732cfca02af87befbc93d42579472b3ebeeb9bd297 · schema claims-v0.9 · position 2 in the model’s answer

nitrogen · growth · Citrus sinensis (sweet orange)Positive and negative results

21 papers: 15 positive, 6 negative or no effect

14 papers in the same direction as this claim · 5 in the opposite direction · 1 reporting no difference from an alternative

negative
N deficiency enhancing root dry weight/shoot dry weight ratio.
Adaptive responses of carbon and nitrogen metabolisms to nitrogen-deficiency in Citrus sinensis seedlings · 2022
Opposite directionAbout lacking this nutrient, so it counts the other way round
no effect
Regeneration capacity did not differ between cryopreserved and non-cryopreserved sweet-orange callus.
Cryopreserved callus, a source of protoplasts for citrus improvement · 2000 · compared with non-cryopreserved callus
Opposite direction
negative
Nitrogen deficiency increased root/shoot dry weight ratio.
Adaptive Responses of Hormones to Nitrogen Deficiency in Citrus sinensis Leaves and Roots · 2024
Opposite directionAbout lacking this nutrient, so it counts the other way round
no effect
Nitrogen rate did not affect growth in the first two field years.
Nitrogen, Rootstocks, and Growth of Young 'Rhode Red' Valencia Orange Trees · 2001
Opposite direction
no effect
In 1997, N rate and fertigation frequency did not affect trunk diameter.
366 Nitrogen Fertigation of Young Navel Orange Trees · 2000
Opposite direction
no effect
Growth did not differ detectably between nitrate and ammonium nitrogen sources.
The development of cuttings of the Washington navel orange to the stage of fruit set. I. The development of the rooted cutting · 1961 · compared with ammonium
No difference from an alternative
positive
A nitrogen level of 224 kg N ha−1 improved canopy volume compared with other N levels.
Comparative Response of Huanglongbing-Affected Sweet Orange Trees to Nitrogen and Zinc Fertilization under Microsprinkler Irrigation · 2020 · compared with other N levels
Same direction
positive
Urea sprays at pea or marble stage significantly increased vegetative growth.
Enhancing cropping of Navel orange by different agrochemicals foliar sprays · 2011
Same direction

12 papers more in this group

See all 21 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.

Other papers on the same question

nitrogen · growth · Citrus sinensis (sweet orange)Positive and negative results