with Rick Rundell-Gordon, Senior Agronomist, Grounded Agronomy
Rotating herbicide modes of action ‘buys you time’, but mixing ‘buys you shots’.
When a herbicide is released on the market it has a fairly predictable number of uses or ‘shots’ before resistance to that mode of action begins to be evident in the weed population. For example, in-field experience and computer modelling both show that repeated use of glyphosate on a weed population will evolve full-blown glyphosate resistance in approximately 15 years. This effective lifespan ranges from around four years to over 20 years for the most commonly used herbicides, before resistance is evident.Leave a comment Continue reading