Cover Crop Interseeder: Potential for Injury from Corn Herbicides

This list includes herbicides we have evaluated for use with interseeding annual ryegrass and medium red clover in corn. The herbicides rated green have a low potential for injury, yellow, medium or moderate potential for injury, and pink have a high potential to injury cover crops. These ratings pertain to work performed in the mid-Atlantic region and is not necessarily applicable to other regions of the country. This is an ongoing project.

The table below provides some guidelines for herbicide use in the mid-Atlantic region with interseeded cover crops.

Potential for Cover Crop Injury (% Fall Biomass Reduction)

<15% = LOW (L) 15-30% = MODERATE (M) >30% = HIGH (H)

Potential for interseeded cover crop injury from residual corn herbicides (Pennsylvania Guidelines).