Claim · model-written summary
Mixed nitrogen significantly increased tuber dry weight relative to either nitrogen form alone.
- Taxon
- potato
Solanum tuberosumt0 - Treatment
- all mixed nitrogen treatmentse0
- Outcome
- tuberse0
- Direction
- increasede0
- Comparator
- single NH4+ or NO3- forme0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValueQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“Dry weights of shoots, tubers, and whole plant at the harvest were increased significantly with all mixed nitrogen treatments as compared with single NH4+ or NO3- form.”
t0“potatoes”
Title
Study of various NH4+/NO3−mixtures for enhancing growth of potatoes
Weixing Cao; Theodore W. Tibbitts Journal of Plant Nutrition 1993. doi:10.1080/01904169309364643
Other claims from this paper (11)
- Intervention effect Mixed nitrogen significantly increased shoot dry weight relative to either nitrogen form alone.
- Intervention effect Mixed nitrogen significantly increased whole plant dry weight relative to either nitrogen form alone.
- Observation Growth enhancement under mixed nitrogen was greatest at 8% to 20% ammonium nitrogen.
- Intervention effect Mixed nitrogen increased shoot total nitrogen concentration relative to separate forms.
- Intervention effect Mixed nitrogen increased root total nitrogen concentration relative to separate forms.
- Intervention effect Mixed nitrogen increased total nitrogen accumulation in shoots relative to separate forms.
- Intervention effect Mixed nitrogen increased total nitrogen accumulation in roots relative to separate forms.
- Intervention effect Ammonium in solution increased shoot phosphorus concentration relative to nitrate alone.
- Intervention effect Ammonium in solution decreased tissue calcium and magnesium concentrations.
- Recommendation The authors conclude that combined ammonium and nitrate fertilization can enhance nitrogen uptake.
- Recommendation The authors conclude that combined ammonium and nitrate fertilization can enhance potato productivity.