CropsScientists at the Agricultural Research Council and the University of Pretoria say overreliance on glyphosate in no-till systems is driving resistance, and that a few surviving weeds are the first warning sign.
CropsStellenbosch researchers are testing chaff lining and narrow windrow burning against herbicide-resistant ryegrass, while CNH and FarmLink say camera and satellite systems can cut chemical use by spraying only where weeds grow.
AgrotechUK startup Earth Rover's autonomous CLAWS robot finds weeds with cameras and boils their growing tip with a focused pulse of light, with no herbicide, while it scouts the crop.
CropsSyngenta will market cyclopyranil, a PPO-inhibiting rice herbicide developed by Japan's Kyoyu Agri, in selected Asian markets, giving growers a new tool against grass and broadleaf weeds resistant to ACCase and ALS herbicides.
CropsANVISA has added metproxybicyclone, a new ACCase-inhibitor subclass aimed at grass weeds resistant to glyphosate and clethodim, to its list of regulated pesticide ingredients, a required step for Syngenta's Perforze OD herbicide in soybean and cotton.
CropsMaipeng, a 36% bixlozone formulation, works by a mode of action unrelated to the ALS and ACCase herbicides that ryegrass and foxtail in Chinese wheat now resist ten- to twenty-fivefold.
CropsUniversity of Queensland and state trials under GRDC will combine sowing date, seeding rate and herbicides to control annual ryegrass and paradoxa grass in northern grain crops.
AgribusinessFMC has submitted its regulatory dossier for rimisoxafen, which it calls the first dual mode of action herbicide, to Brazilian authorities, targeting resistant broadleaf weeds such as Amaranthus in soybeans and corn.
CropsMore than 70 percent of Idaho's documented Palmer amaranth populations resist glyphosate and New York populations show metabolic resistance to atrazine, researchers told the GROW weed-management network.
CropsManitoba Agriculture's Kim Brown urges farmers to pull and bag waterhemp before harvest, since one plant averages 250,000 seeds and combines carry them across fields; local populations already resist three herbicide groups.
A chute on the combine funnels chaff and weed seed into narrow rows, past research put 95% of waterhemp seed into 5% of a field, and Ohio Soybean Council-funded work by Amber Emmons and Dr Eugene Law finds heavy chaff can cut waterhemp emergence 90% at densities equal to a 100 bu/ac soybean crop,
