KomPass: Article from 28.11.2023 | Last changed: 11.12.2024
GE-I-4: Ragweed pollen burden
… the fact that, once the plant is established, the period in which its pollen can be airborne is extended well into October 24 , as this is a late-flowering plant. The temporal extension of the period in which pollen is air-borne also extends the duration of the time in which affected individuals will … all measurements so far amounts to approximately 25 pollen per cubic metre of air annually. By comparison: For birch, the comparable value is 6,800 pollen per …