Search results for "pollen amounts"

Impact of campaigns to control common ragweed on the pollen production in France

2014

National audience; The dispersion of common ragweed (Ambrosia artemisiifolia L.) is anthropogenic, and because it is an invasive plant, a number of control procedures have been implemented whose effectiveness was measured. Measures on pollen emissions were compared between areas with different level of management. In addition to pollen traps of the French aerobiology network (RNSA), passive traps (SLT: SIGMA2 Like Trap) were positioned near controlled or non-controlled areas. Two areas were selected: - infested areas, in Rhône-Valley, 12 SLT were set up: 8 in Estrablin, with 2 in non-controlled areas and 6 in well-controlled areas; 4 near Valence, with one in non-controlled area and 3 in we…