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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.
