Intervention effectmodel-written summary

Controlled-release urea raised grain number and weight per spike.

A claim from Effect on Growth and Development,Yield and Water Use Efficiency of Winter Wheat through Controlled-release Urea Base and Common Urea with Split Application in Loess Plateau East of Gansu · 2014

Intervention effectobservedoriginal resultpositivemeasured

Claim · model-written summary

Taxon: winter wheatTriticum aestivume0 e1 e2 e3 t0
Treatment: controlled-releasee0 e1 e2 e3 t0
Outcome: per-spike grain number and grain weighte0 e1 e2 e3 t0
Direction: increasese0 e1 e2 e3 t0
Comparator: common urea at the same stagese0 e1 e2 e3 t0

Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValueQualifier

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

*Triticum aestivum* · TaxonRasbak · CC BY-SA 3.0 · Wikimedia Commons ↗

Verbatim

e0
“promotes grouting,increases per-spike grain number and grain weight”
✓ located verbatim in the source · abstract, characters 1259–1326

t0
“Winter Wheat”
✓ located verbatim in the source · title, characters 67–79

e1
“Compared with common urea at the same stages,equal nitrogen nutriment application of controlled-release improves leaf SPAD value in grain filling stage( named the chlorophyll content),and helps to extend leaf senescence, promotes grouting,increases per-spike grain number and grain weight.”
✓ located verbatim in the source · abstract, characters 1038–1327

e2
“However,difference was significant in single basal application of controlled-release urea of 180kg·hm- 2,the yield and WUE of winter wheat was highest and the yield component was the best in this study. Yield and WUE under plastic film mulching cultivation was 3549. 0 and 13. 2kg· mm- 1·hm- 2,respectively,meanwhile,the numbers were 2251. 5 and 9. 15kg·hm- 2respectively under open field cultivation.”
✓ located verbatim in the source · abstract, characters 636–1037

e3
“by using equal amount of controlled release urea,crop yield and WUE can reach or be higher than that of using common urea by staged application”
✓ located verbatim in the source · abstract, characters 491–634

Title

Effect on Growth and Development,Yield and Water Use Efficiency of Winter Wheat through Controlled-release Urea Base and Common Urea with Split Application in Loess Plateau East of Gansu

Zhang Jian-ju Journal of Nuclear Agricultural Sciences 2014

Other claims from this paper (8)

Intervention effect Controlled-release urea gave yield and WUE at least as high as staged common urea.
Intervention effect Basal controlled-release urea at 180kg·hm- 2 produced the highest yield and WUE.
Intervention effect The basal treatment had the best yield components.
Intervention effect Mulched cultivation yielded 3549.0 versus 2251.5 in the open field.
Intervention effect Mulched cultivation had WUE of 13.2 versus 9.15 in the open field.
Intervention effect Controlled-release urea improved grain-filling leaf SPAD.
Intervention effect Controlled-release urea delayed leaf senescence.
Intervention effect Controlled-release urea significantly increased NDVI.

Record rev-e7ebaecbdfef0ac994b251f7993fd43aef5002db04cf232173d7ddf2a94e286d · schema claims-v0.9 · position 8 in the model’s answer

fertilization · yield · Triticum aestivum (wheat)Positive and negative results

3,438 papers: 3,115 positive, 323 negative or no effect

3,114 papers in the same direction as this claim · 284 in the opposite direction · 39 reporting no difference from an alternative

no effect
Current high nitrogen practices do not significantly raise crop yields relative to optimum fertilization.
Reducing environmental risk by improving N management in intensive Chinese agricultural systems · 2009 · compared with knowledge-based optimum N fertilization
Opposite direction
negative
Wheat yield declined by 0.04 Mg ha −1 yr −1 with 75 and 100% N-P-K fertilizer.
Yield and Soil Nutrient Changes in a Long‐Term Rice‐Wheat Rotation in India · 2002
Opposite direction
negative
The authors concluded that N fertiliser could not compensate for the yield reduction in canola and wheat due to late sowing.
Effects of sowing time and nitrogen fertiliser on canola and wheat, and nitrogen fertiliser on Indian mustard. I. Dry matter production, grain yield, and yield components · 2001
Opposite direction
negative
Genetic gain in winter wheat yield without fertiliser N was 0.021 t ha −1 y −1, smaller than at 215–250 kg/ha N.
Responses of grain yield, biomass and harvest index and their rates of genetic progress to nitrogen availability in ten winter wheat varieties · 2006 · compared with 215–250 kg/ha N
Opposite direction
no effect
The fertilizing substances did not significantly change plant yields.
The influence of chlorothalonil on the activity of soil microorganisms and enzymes · 2018
Opposite direction
no effect
Compost did not significantly affect wheat grain yield, biomass or harvest index.
Responses of Wheat Yield, Macro- and Micro-Nutrients, and Heavy Metals in Soil and Wheat following the Application of Manure Compost on the North China Plain · 2016
Opposite direction
no effect
Wheat yields were similar in fertilized fallow and unfertilized green-manure plots.
Wheat Yields, Nitrogen Uptake, and Soil Moisture Following Winter Legume Cover Crop vs. Fallow · 1998 · compared with unfertilized plots following a green manure crop
Opposite direction
no effect
Incorporation timing of feedlot cattle manure had no impact on soil or crop performance.
Effect of rate, frequency and incorporation of feedlot cattle manure on soil nitrogen availability, crop performance and nitrogen use efficiency in east-central Saskatchewan · 2004
Opposite direction

3,429 papers more in this group

See all 3,438 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

fertilization · yield · Triticum aestivum (wheat)Positive and negative results