Claim · model-written summary
Chlorophyll index was highest at 100 mg/L urea.
- Taxon
- lettuce
Lactuca sativat0 - Treatment
- 100e0
- Outcome
- chlorophyll indexe0
- Direction
- higheste0
- Qualifier
- mg/L ureae0
Not reportedMaterialGeneCompoundOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleComparatorSettingValue
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“The highest chlorophyll index and maximal quantum yield of PS II photochemistry efficiency (Fv/Fm) were obtained in 100 and 75 mg/L urea, respectively.”
t0“lettuce”
Title
H. Nazari Mamaqani; S.J. Tabatabaei; S. Bolandnazar Journal of Science and Technology of Greenhouse Culture 2016. doi:10.18869/acadpub.ejgcst.6.4.63
Other claims from this paper (7)
- Intervention effect Leaf fresh and dry weight were highest at 50 mg/L urea.
- Intervention effect Stem fresh and dry weight were highest at 50 mg/L urea.
- Intervention effect Leaf area fell above 25 mg/L urea.
- Intervention effect Maximal PS II quantum yield was highest at 75 mg/L urea.
- Intervention effect Leaf total nitrogen rose significantly with increasing urea, peaking at 100 mg/L.
- Intervention effect Nickel application reduced lettuce yield and physiological traits.
- Intervention effect Nickel application had no significant effect on total nitrogen concentration.