Claim · model-written summary
Ammonium produced higher shoot dry matter yields than nitrate at each Fe level.
SorghumNot reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“at each level the NH4 form was superior to that of NO3 -N”
t0“Sorghum”
Title
R. A. Alhendawi; E. A. Kirkby; D. J. Pilbeam; et al. Journal of Plant Nutrition 2008. doi:10.1080/01904160802325586
Other claims from this paper (9)
- Observation Chlorosis occurred except in the two higher ammonium treatments.
- Intervention effect Increasing Fe supply raised shoot dry matter yield only slightly.
- Intervention effect Rhizosphere sand pH fell about 0.5 unit with ammonium.
- Intervention effect Rhizosphere sand pH increased about 0.2 unit with nitrate.
- Intervention effect Ammonium approximately doubled shoot Fe, Zn, Cu and Mn concentrations and uptakes versus nitrate.
- Intervention effect Increasing Fe seed dressing had little effect on shoot Fe concentration or uptake with nitrate.
- Observation Nitrate fed plants had shoot Fe concentrations around 40 μ g g− 1 dry wt., below the critical deficiency range.
- Observation Mn concentrations of nitrate fed dressed plants were in the deficiency range.
- Recommendation Fe dressing with ammonium fertilization and nitrification inhibition is proposed to avoid early chlorosis.