Claim · model-written summary
Deep urea placement increased nitrogen recovery efficiency by 0.9–16.7% in dry and normal years.
- Taxon
- winter wheat
Triticum aestivumt0 - Treatment
- deep urea placemente0
- Outcome
- N recovery efficiencye0
- Direction
- increasede0
- Value
- 0.9–16.7 %e0
- Qualifier
- dry and normal yearse0
- Comparator
- D5e0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSetting
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Compared with D5, deep urea placement significantly increased the crop N uptake (10.4–27.6 %), grain N content (1.2–18.7 %), N recovery efficiency (NRE, 0.9–16.7 %) and N partial productivity (PFPN, 1.1–20.0 %) in dry and normal years”
t0“winter wheat”
Title
Yingxin Wang; Qin Guo; Yirui Xu; et al. Agricultural Water Management 2022. doi:10.1016/j.agwat.2022.107971
Other claims from this paper (16)
- Intervention effect Deep urea placement increased root length and weight densities at 20–60 cm.
- Intervention effect Deep urea placement increased grain nitrogen content by 1.2–18.7% in dry and normal years.
- Intervention effect Deep urea placement increased nitrogen partial productivity by 1.1–20.0% in dry and normal years.
- Intervention effect D15 increased nitrogen uptake by 0.9% over D5 in the wet year.
- Intervention effect D15 increased grain nitrogen content by 1.3% over D5 in the wet year.
- Intervention effect D15 increased nitrogen recovery efficiency by 3.7% over D5 in the wet year.
- Intervention effect D15 increased nitrogen partial productivity by 1.1% over D5 in the wet year.
- Intervention effect Deep urea placement increased crop water productivity by 9.6–23.9% in dry and normal years.
- Intervention effect Deep urea placement increased yield by 3.2–20.0% in dry and normal years.
- Intervention effect D15 increased water productivity by 1.1% over D5 in the wet year.
- Intervention effect D15 increased yield by 0.5% over D5 in the wet year.
- Intervention effect Deep urea placement raised soil nitrate accumulation by 4.7–14.5% compared with D5.
- Observation Urea placement at 28.0–30.0 cm maximized wheat yield, grain nitrogen content and water productivity in dry years.
- Observation Urea placement at 20.7–21.6 cm maximized wheat yield, grain nitrogen content and water productivity in normal years.
- Observation Urea placement at 12.3–13.1 cm maximized wheat yield, grain nitrogen content and water productivity in wet years.
- Recommendation The authors recommend adjusting moderate urea placement depth to precipitation conditions.