Claim · model-written summary
Two applications produced grain zinc concentrations of 44.3 and 52.4 mg kg −1 in Years 2 and 3.
- Taxon
- bread wheat
Triticum aestivumt0 - Treatment
- application of Zn at both heading and floweringe0
- Outcome
- grain Zn concentratione0
- Direction
- increasee0
- Value
- 44.3 and 52.4 mg kg −1e0
- Qualifier
- 35–93%e0
- Comparator
- untreated controle0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSetting
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“With the application of Zn at both heading and flowering, grain Zn concentration reached 44.3 and 52.4 mg kg −1 (in Years 2 and 3), implying an increase of 35–93% compared to the untreated control.”
t0“bread wheat”
Title
Agronomic and economic response of bread wheat to foliar zinc application
Reza Keshavarz Afshar; Chengci Chen; Shuang Zhou; et al. Agronomy Journal 2020. doi:10.1002/agj2.20247
Other claims from this paper (7)
- Intervention effect One heading application increased grain zinc by 5.8 to 9.5 mg kg −1, or 17–47%, over control.
- Recommendation The second flowering application was necessary to exceed 40 mg kg −1 grain zinc.
- Intervention effect Zinc application marginally increased grain yield.
- Observation The yield increase did not offset additional zinc fertilization costs.
- Observation The net return from the first zinc application was −1 USD ha −1.
- Observation The net return from the second zinc application was +13 USD ha −1.
- Recommendation Adoption is unlikely without a price incentive or government payments.