Claim · model-written summary
The critical SPAD index was 38.8 in the fourth leaf.
- Taxon
- potato
Solanum tuberosumt0 - Organ / stage
- fourth leafe0
- Outcome
- critical SPAD indexe0
- Value
- 38.8e0
Not reportedMaterialGeneCompoundInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.

Verbatim
e0“The critical SPAD index was 38.8 in the fourth leaf, which was more sensitive to the effect of N rates than the oldest leaf.”
t0“potato seed minitubers”
Title
Production of basic potato seed minitubers in substrate and different nitrogen rates
Carla de Bem dos Santos Souza; Paulo Cezar Rezende Fontes; Marialva Alvarenga Moreira; et al. Revista CERES 2012. doi:10.1590/s0034-737x2012000600016
Other claims from this paper (8)
- Intervention effect Nitrogen rates positively affected fourth-leaf and oldest-leaf growth indices.
- Intervention effect Nitrogen rates positively affected leaf number and mass.
- Intervention effect Nitrogen rates positively affected leaf nitrogen level, content and SPAD.
- Intervention effect Nitrogen rates increased the number of harvested tubers.
- Intervention effect Nitrogen rates increased the mass of harvested tubers.
- Observation The largest tuber number was 5.44 per plant at 360.0 mg N dm-3.
- Observation Maximum tuber mass was 243.5 g per plant at 332.9 mg N dm-3.
- Observation The fourth leaf was more sensitive to nitrogen rates than the oldest leaf.