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What to Expect from Dicamba Injury to Potato (07/20/17)

There has been much discussion on the effects of dicamba on potato.

What to Expect from Dicamba Injury to Potato

There has been much discussion on the effects of dicamba on potato. Dicamba is a translocating herbicide that will express injury in the growing points of plants. When a low dose of unintended herbicide comes in contact with a sensitive crop, such as potato, the results can be devastating for the potato plant and tubers. New leaves become twisted, cupped and malformed, while tuber number can be reduced and malformed. Contaminated seed will be low to emerge and express epinastic leaves (where cells on top of leaf grow faster than cells on bottom of leaf, causing leaf to appear drooped). I recently recorded a presentation explain the effects of dicamba on potato leaves, tubers and seed contaminated with dicamba planted back.

Andy Robinson

NDSU/U of M Extension Potato Agronomist

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