Claim · model-written summary
Chlorophyll and leaf nitrogen percentage correlated.
Zea maysNot reportedMaterialGeneOrgan / stageInteractorInteractor roleSecond interactorSecond interactor roleTreatmentComparatorSettingDirectionQualifier
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“Chlorophyll and percent N were also correlated ( r 2 = 0.80)”
e1“maize ( Zea mays L.)”
Title
D. W. Wolfe; D. W. Henderson; T. C. Hsiao; et al. Agronomy Journal 1988. doi:10.2134/agronj1988.00021962008000060005x
Other claims from this paper (12)
- Association Photosynthetic capacity correlated with leaf nitrogen percentage during senescence.
- Observation Severely water stressed plants occasionally had midday photosynthetic depression unrelated to leaf nitrogen.
- Observation Initial declines in chlorophyll and nitrogen often started several days apart.
- Observation Nitrogen deficits were less severe in 1983 than 1982.
- Intervention effect Lack of nitrogen application reduced lower leaf longevity in both years.
- Intervention effect Nitrogen deficiency reduced peak leaf nitrogen percentage by 50% in 1982.
- Intervention effect Nitrogen deficiency reduced peak chlorophyll by 50% in 1982.
- Intervention effect Nitrogen deficiency reduced peak photosynthetic capacity by 50% in 1982.
- Observation Leaf 5 declined fastest in low nitrogen plants.
- Observation Water stress intensified as stored soil water depleted.
- Intervention effect Nonirrigated nitrogen-fertilized plants had the fastest decline and earliest senescence of upper leaves.
- Mechanism Early stress effects on leaf area and ear development altered later water and nitrogen demand and leaf senescence.