Severe injury to a pinto bean crop from Outlook, an acetanilide herbicide. Notice the unifoliate leaves typically are asymptomatic, whereas the trifoliate leaves have a puckered, drawstring appearance. Injury from Outlook can be affected by soil texture, compaction, temperature, etc., resulting in non-uniform distribution of symptomatic plants in a field.

Severe injury to a pinto bean crop from Outlook, an acetanilide herbicide. Notice the unifoliate leaves typically are asymptomatic, whereas the trifoliate leaves have a puckered, drawstring appearance. Injury from Outlook can be affected by soil texture, compaction, temperature, etc., resulting in non-uniform distribution of symptomatic plants in a field.

Photo Source: Lindsey du Toit, Washington State University