Mean percentage of contaminated perennial ryegrass seed lots and white clover seed lots. Note: Y-axis only goes up to 20%.

 
 
  Part of: Rubenstein JM, Hulme PE, Rolston MP, Stewart AV, Hampton JG (2023) A century of weed change in New Zealand’s forage seed multiplication industry. NeoBiota 85: 167-195. https://doi.org/10.3897/neobiota.85.100825