Tag Archives: resistance management

Multiple herbicide resistance in barnyardgrass prompts red flag warning

jason norsworthy, rice flatsedge

• By Vicky Boyd, Editor • A grassy weed with resistance to multiple herbicides poses as big – if not a bigger – challenge to Arkansas rice growers than herbicide-resistant Palmer amaranth does to soybean and cotton producers. That was the sobering outlook University of Arkansas Weed Scientist Jason Norsworthy presented about herbicide-resistant barnyardgrass during the recent University of Arkansas ... Read More »

Rude awakening

sheath blight lesions

Fungicide-resistant sheath blight should be a wake-up call to follow resistance management rules regardless of where you farm. • By Vicky Boyd, Editor •  Resistance of the sheath blight pathogen to the popular strobilurin fungicides continues to increase, encompassing roughly half of Louisiana’s rice acres as well as one confirmed field in Mississippi. Although strobilurins still provide good sheath blight ... Read More »