Control of Ventenata dubia using various selective herbicides

摘要

An experiment was initiated near Moscow, Idaho on a Palouse Prairie restoration site to evaluate the efficacy of various herbicides at different timings for the control of ventenata (Ventenata dubia (Leers) Coss.). Herbicide injury symptoms on nativeperennial grasses (Idaho fescue, Bluebunch wheatgrass) were also evaluated. Triasulfuron was applied as a PRE-emergent treatment and as a late-POST treatment. Imazapic was applied as early and late-POST treatments and sulfosulfuron was applied as an early-POST treatment. The experiment was designed as a randomized complete block with four replications. Plot size was 10 by 30 feet. All treatments were applied with a CO_2-pressurized backpack sprayer at 15 gpa (Table 1).