Claim · model-written summary
Below 750 mg N plant –1 week –1, ammonium can serve as an equivalent nitrogen source to nitrate for marketable fruit yield.
- Taxon
- tomatoes
Solanum lycopersicumt0 - Treatment
- NH $ _4^+ $e0
- Outcome
- equivalent yields of marketable fruite0
- Qualifier
- below 750 mg N plant –1 week –1e0
- Comparator
- NO $ _3^- $e0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleSettingDirectionValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“with a total N supply below 750 mg N plant –1 week –1 , NH $ _4^+ $ can be used as equivalent N source to NO $ _3^- $ , resulting in equivalent yields of marketable fruit”
t0“tomatoes”
Title
Anuschka Heeb; Bengt Lundegårdh; Tom Ericsson; et al. Journal of Plant Nutrition and Soil Science 2005. doi:10.1002/jpln.200420420
Other claims from this paper (8)
- Intervention effect Shoot biomass did not differ significantly between nitrate-fed and ammonium-fed tomatoes.
- Intervention effect Red tomato yields did not differ significantly between nitrate and ammonium feeding.
- Intervention effect Nitrogen rates above 750 mg N plant –1 week –1 did not significantly increase marketable fruit yield.
- Intervention effect Nitrogen rates above 750 mg N plant –1 week –1 enhanced shoot biomass.
- Intervention effect Ammonium-dominated treatments with high chloride showed increasing blossom-end-rot incidence.
- Intervention effect Organic nitrogen produced lower shoot biomass than inorganic nitrogen.
- Intervention effect Organic nitrogen produced lower yields than inorganic nitrogen.
- Observation Organic nitrogen yielded good fruit quality with few blossom-end-rot-infected fruits.