Claim · model-written summary
With mixed nitrogen, potato growth decreased only at pH 4.
- Taxon
- potatoes
Solanum tuberosumt0 - Treatment
- mixed nitrogene0
- Outcome
- plant growthe0
- Direction
- decreasede0
- Qualifier
- pH 4e0
- Comparator
- pH 4.5 to 7e0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“With mixed nitrogen, plant growth as total dry weight, leaf area and tuber number per plant was essentially similar at pH 4.5 to 7, and decreased only at pH 4”
t0“potatoes”
Title
Responses of potatoes to solution pH levels with different forms of nitrogen
Weixing Cao; Theodore W. Tibbitts Journal of Plant Nutrition 1994. doi:10.1080/01904169409364713
Other claims from this paper (8)
- Intervention effect With mixed nitrogen, potato dry weight, leaf area and tuber number were similar from pH 4.5 to 7.
- Intervention effect With nitrate alone, potato growth peaked at pH 5 and decreased at other pH levels.
- Intervention effect With ammonium alone, potato growth peaked at pH 6 and decreased at other pH levels.
- Intervention effect With mixed nitrogen, shoot N, K and Ca concentrations changed little over pH 4 to 7.
- Intervention effect With mixed nitrogen, shoot Mg and P concentrations changed little over pH 4 to 7.
- Intervention effect With either single nitrogen form, shoot mineral concentrations varied significantly between pH 4 and 7.
- Intervention effect Combined pH 5 and 6 experiments duplicated the growth and mineral composition interaction.
- Intervention effect Mixed nitrogen broadens the useful pH range and enhances potato growth relative to a single form.