Abstract Stakeholders across the state of Nebraska, USA, were surveyed in 2019–2020 to assess problem weeds and weed management practices agronomic crops. A total 420 complete responses obtained four Nebraska districts (Northeast, Panhandle, Southeast, West Central). Accumulated state, 65.5% farmed or scouted crop ground was under no‐till production, with major crops being corn soybean represen...

Abstract In 2020, a greenhouse experiment was conducted to investigate the suppression of annual bluegrass ( Poa annua ), which is difficult weed manage in cool-season turfgrass mixtures on football pitches. The efficacy prohexadione calcium (Pc), ethephon (Eth) and Pseudomonas fluorescens against P. , Lolium perenne pratensis tested, as latter two most commonly occur Mesotrione (Mes) used posi...

Abstract The control of multiple-resistant wild radish ( Raphanus raphanistrum L.) populations in no-till Australian wheat Triticum aestivum crops has relied upon 4-hydroxyphenylpyruvate dioxygenase (HPPD)-inhibiting herbicides over the last decade. Two R. identified as putatively resistant to pyrasulfotole + bromoxynil an initial large-scale screening trial were characterized and confirmed be ...

Green pigweed [Amaranthus powellii S.Wats.] is a prolific annual dicot weed that prominent of crop production in northeastern North America. interference has been documented to reduce corn yields up 54% the absence control strategies. In 2021, green biotype from field near Dresden, Ontario, Canada was determined be resistant MCPA, mecoprop, dichlorprop-p, aminocyclopyrachlor (synthetic auxins),...

Abstract Owing to the lack of effective POST herbicide options, producers typically rely on nicosulfuron as main grass in sweet corn production systems. In 2019, a Wisconsin producer reported fall panicum control escapes after spraying nicosulfuron. Seeds from mature plants were collected (1) measure response acetolactate synthase (ALS)-inhibiting herbicides, (2) elucidate resistance mechanism,...

Abstract The herbicides that inhibit 4-hydroxyphenylpyruvate dioxygenase (HPPD) are primarily used for weed control in corn, barley, oat, rice, sorghum, sugarcane, and wheat production fields the United States. objectives of this review were to summarize 1) history HPPD-inhibitor their use States; 2) resistant weeds, mechanism resistance, management; 3) interaction with other herbicides; 4) fut...