| Abstrakt: |
Reviton (tiafenacil) is a new protoporphyrinogen oxidase (PPO)-inhibiting herbicide labeled for burndown applications. However, as burndown applications can be stretched across a wide range of dates in the Mid-South, there can be a high potential for off-target movement to occur onto emerged crops. As a result, research was needed to determine the effects of simulated drift rates of Reviton to rice (Oryza sativa L.). In 2022, an experiment was established in Lonoke, Arkansas, St. Joseph, Louisiana, and Stoneville, Mississippi, to assess the tolerance of rice to simulated drift rates of Reviton herbicide at two exposure timings. Reviton simulated drift rates of 1/8, 1/16, 1/32, 1/64, 1/128, and 1/256 of the labeled rate (1 fl oz/ac) were applied to determine the potential consequences of off-target movement on rice. No height or rough rice yield differences resulted from exposure to simulated drift rates of Reviton. Reviton caused greater visual injury to rice at higher simulated drift rates (particularly 1/8 and 1/16 of the labeled rate) when exposure occurred at an early growth stage; however, rice recovered without yield reduction. This research indicates rice growers should not have major concerns about Reviton drift onto their rice crop; however, appropriate measures should always be taken to reduce off-target movement of herbicide applications. [ABSTRACT FROM AUTHOR] |
