Weedy rice ( Oryza sativa L. spp.) is an emerging weed in California rice production. To address weedy rice issues and improve extension efforts, information is needed about the prevalence of growing practices that may contribute to or prevent weedy rice infestations, and about grower awareness and perceptions of weedy rice. Using a mail-in and online survey, we gathered information in the spring of 2019 from growers and pest control advisors about their rice production practices and attitudes about weedy rice. The 157 respondents reported diverse rice production systems, growing practices, and weed management methods. Weedy rice was reported on only a small number of respondents’ farms, and most respondents did not consider weedy rice to be a serious issue for them. Survey results indicate that most respondents are already implementing practices to prevent the spread of weedy rice on the land they manage. These proactive measures will play a critical role in safeguarding rice production and mitigating the potential for future infestations.
Karn et al. (Thu,) studied this question.