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Paraquat is classified as a non-selective contact herbicide. The key characteristics that distinguish it from other agents used in plant protection products are: It kills a wide range of annual grasses and broad-leaved weeds and the tips of established perennial weeds. It is very fast-acting. It is rain-fast within minutes of application.
According to Ian Heap, a weed specialist, who completed his PhD on resistance to multiple herbicides in annual ryegrass (Lolium rigidum) in 1988 [189] – the first case of an herbicide-resistant weed in Australia [190] – by 2014 Lolium rigidum was the "world’s worst herbicide-resistant weed" with instances in "12 countries, 11 sites of ...
In addition, it serves as a host for species of the bacteria Clavibacter, which cause annual ryegrass toxicity (ARGT), and can be infected by the poisonous ergot fungus, [9] which causes ergotism in humans and other mammals. [10] Attempts to control it with herbicide have met with an unexpectedly high level of herbicide resistance. Over 90% of ...
The Herbicide Resistance Action Committee (HRAC) classifies herbicides by their mode of action (MoA) to provide a uniform way for farmers and growers to identify the agents they use and better manage pesticide resistance around the world. [1] [2] It is run by CropLife International [3] in conjunction with the Weed Science Society of America ...
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Annual ryegrass (L. rigidum) is one of the most serious and costly weeds of cropping systems in southern Australia, and herbicide resistance is a frequent problem. [12] Ryegrass pollen is also one of the major causes of hay fever .
This is a list of herbicides. These are chemical compounds which have been registered as herbicides . The names on the list are the ISO common name for the active ingredient which is formulated into the branded product sold to end-users. [ 1 ]
Annual bluegrass collected from a golf course in the U.S. state of Tennessee was found in 2020 to be resistant to seven herbicides at once. [72] Rigid ryegrass and annual bluegrass share the distinction of the species with confirmed resistance to the largest number of herbicide modes of action, both with confirmed resistance to 12 different ...
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