Pea Herbicides

March 8, 2013 in Uncategorized

Mark VanGessel, Extension Weed Specialist; mjv@udel.edu

Weed control options remain limited for processing peas. Pursuit, at 1.5 to 2.0 fluid ounces per acre, needs to be used as a pre-plant incorporated or preemergence treatment and is used primarily for broadleaf weeds. Preemergence applications of Command at 8 to 16 fl oz or Dual at 0.5 to 1 pt/A are labeled for control of annual grasses and some broadleaf weeds. Basagran and Thistrol are labeled for postemergence control of broadleaf weeds. Apply Basagran at 1.5 to 2 pints per acre after peas have more than three pairs of leaves. Do not add oil concentrate. Select, Assure II, Targa, or Poast can be used for postemergence grass control.

For no-till plantings of early peas, controlling all weeds present before planting can be challenging. The cool weather can result in poor performance with glyphosate. There are no other products that can be tankmixed with glyphosate to improve control in this situation. In some situations, use of glyphosate 10 to 14 days prior to planting and then a sequential application of Gramoxone maybe need at planting to completely kill weeds prior to planting.