Pests

Fight volunteer corn and grass weeds in soybeans

June 7, 2022

Volunteer corn is an extremely competitive weed. Left untreated, it can interfere with harvest and dramatically reduce yields. Studies show that as few as 0.5 volunteer corn plants per m2 can reduce soybean yields by up to 10%.1

Read on for expert tips and reminders for a highly effective Venture® L herbicide application.

Application timing is important

  • Venture L can be applied up to the third trifoliate stage of beans. However, later applications will not cause crop injury.
  • For volunteer corn, apply Venture L at 0.25 L⁠/⁠ac (0.6 L⁠/⁠ha). Venture L will not control volunteer Enlist® corn hybrids.
  • For annual grasses, apply Venture L at 0.4 L⁠/⁠ac (1.0 L⁠/⁠ha). The stage of target weeds is critical. If grasses are beyond the 5-leaf stage or tillering, Venture L is not recommended.

Pay attention to water volumes, tank mixes and surfactants

  • Apply in 8-10 gal/ac (80-100 L/ha) of water.
  • If spraying Venture L on its own, add NIS at 1 to 2 L/1000 L.
  • If Venture L is mixed with glyphosate in Roundup Ready® soybeans and applied with 10-12 gal/ac (100 120 L/ha) of water, no additional surfactant is needed. Increase the rate of Venture L to 0.3 L/ac.

More tank mixes for soybeans

  • Reflex® + Venture L: Use Turbocharge® or a similar adjuvant at 4 5 L/1000 L.
  • Venture L + Basagran®: Use Assist® at 5 L/1000 L.
  • Venture L + Basagran® Forte: No additional surfactant needed.

Weeds on the Venture L label

  • Proso millet, fall panicum, old witchgrass, crabgrass (2 to 5 leaf).
  • Green, yellow, and giant foxtail (2 to 4 leaf).
  • Wild oats (2-5 leaf) – will not control group 1 resistant biotypes.
  • Volunteer corn (does not control volunteer Enlist® corn hybrids).

1 Marquardt, P, C Krupke, and W.G. Johnson. 2012. Competition of transgenic volunteer corn with soybean and the effect on western corn rootworm emergence. Weed Science. 60:193-198.

Always read and follow label directions. Reflex®, Turbocharge®, Venture® and the Syngenta logo are trademarks of a Syngenta Group Company. Other trademarks are property of their respective owners.