#nzpps — Public Fediverse posts
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New paper out in *New Zealand Plant Protection* 🌾
Buddenhagen CE et al. (2026) report AHAS‑inhibitor herbicide resistance in recent Alopecurus myosuroides (black‑grass) incursions into New Zealand.
Two incursion‑linked seed lots were tested. One showed very high resistance (>10× the label rate to achieve 90% control), while the other showed reduced sensitivity. This indicates that AHAS‑inhibitor herbicides should not be used for black‑grass incursion responses in New Zealand.
Given the widespread evolution of resistance overseas, future incursions are increasingly likely to carry resistance traits. Strong border biosecurity, certified seed, avoiding seed from infested regions, and early resistance screening are critical.
https://doi.org/10.30843/nzpp.2026.79.11801
#WeedScience #HerbicideResistance #Biosecurity #BlackGrass #PlantProtection #NZScience #NZPPS