During the 2020 season, 31 new suspected weedy rice samples were received and six were confirmed to be weedy rice. Three came from new sites in Sutter, Yuba, and San Joaquin counties. The other three came from already infested fields. Additionally, we received five samples which could not be identified and need to be tested in the lab to evaluate shattering and dormancy; results will be shared in 2021.
A few seed fields were found contaminated with weedy rice during the seed certification process (primarily with Type 5, seen above); these fields were not approved for seed and the grain marketed as paddy instead.