Herbicide injury summary

HERBICIDE INJURY SUMMARY

Table. Summary of Potato Injury Symptoms from Herbicides

  LEAVES STEMS ROOTS
Glyphosate Yellow, brown, die die die
Metolaclor Heart-shape, crinkle,downward cup delayed, emergence stunting ---
Pendimethalin trifluralin Dark green blothces, some crinkling Delayed emergence, short thick sprout, stunting, brittle Knobby tips, missing hairs, growth stopped
Metribuzin
Linuron
(Triazines)
Yellow margins & tips, interveinal yellowing to browning --- ---
Rimsulfuron
(Imidazolinones)
(Sulfonylureas)
Yellow blades, purple veins (NOTE: tubers mis-shapen) Stunting, purpling ---
EPTC Crinkled, puckered, thickened, dark green, closed-leaf buds delayed emergence stunting ---
PGRs Cupped, crinkled, strapped, curled, parallel veining, fiddle-necking twisted, bent ---
Diquat Paraquat Speckling (drift) --- ---

 

References

  • Bissonnette, H.L., D. Preston and H.A. Lamey. 1993. Potato Productin and Pest Management in No. Dakota and Minnesota. NDSU/U Minn Ext. Bull. #26.
  • Gunsolus, J.L. and W.S. Curran. 1998. Herbicide Mode of Action and Injury Symptoms. No. Central Reg. Ext. Pub. #377.
  • Pavlista, A.D. 1993. Nebraska Potato Focus. Nebr. Coop. Ext. Pub. #PHREC93-04.
  • Wilson, R., D. Lyon and A. Martin. 1999. Herbicide Mode of Action. Nebr. Coop. Ext. Workshop Manual.