Herbicides

Waterhemp has piled on genetic muscle and built documented resistance to herbicides from six separate site of action groups in Illinois. Yet, even more alarming are the consequences of stacked resistance in waterhemp. Once resistance begins stacking, what’s the snowball effect of a weed juggernaut?

Greenhouse and field trials have Arkansas weed scientists looking for answers

In a farming age where the grip of Palmer amaranth intensifies and expands each season, dicamba controversy is exploding beyond fields of Monsanto’s Xtend soybeans.

A driver weed with no equals, Palmer amaranth has changed the chemical game and forced producers into the rows to chase down escapes.

Harry Stephens is literally burning weed seed to save money and boost yield on his ground. Narrow windrow burning has arrived on U.S. farmland.

Ducks are a hunter’s sweetest dream, but can be a farmer’s nightmare akin to flying time bombs expelling rapid-fire payloads of resistant weed seed. Wonder where the next pigweed outbreak will come from? Listen for quacks and honks, and look up. Waterfowl may be a significant source of resistant weed spread.

On many farming operations, mowing has given way to high-powered pre-emerges to kill vegetation, but bald ditches may spawn a regulatory leviathan. Silt gathering in the bottom of ditches and canals; eroded turn rows; washed out roads; and hammered PTO ditches are caught in a vicious spray cycle of unintended consequences with no simple fix.

ARS research agronomist Frank Forcella believed sandblasting organic grit would be an effective weed killer. His determination to break from convention has resulted in a four-row grit blaster capable of obliterating weeds.

Jason Norsworthy is attacking the soil seed bank with a no-prisoner policy: capture, burn and kill. Norsworthy is testing a new weapon in the resistant weed wars aimed directly at the seed bank reserve – narrow-windrow burning.

The weed battle merges herbicides with cultural practices