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SS-AGR-342: Wright's Nutrush: An Invader of Seasonal Wetlands in Florida

Figure 9. Wright's nutrush treated August 5 with 0.5% Reward at Blue Cypress Water Management Area, Upper Basin, St. Johns River (photographed Sept. 17, 2009). At the time of treatment, plants emerged from 12 cm (5 in) of surface water and although large, 90 cm (35 in) were not yet flowering. The photo demonstrates the disadvantages of a late treatment, which involved a heavy biomass production that was slow to decay and the sequestration of native plant growth for an entire growing season. Preliminary trials indicate that a further 10% reduction in dosage (to 0.05% Reward) may be as effective.