Is it worth switching from Atlantis to Monolith?
Every bit of control counts when fighting black-grass. At first glance, 10% more control may not seem an enormous amount but it means less competition for your crop and fewer seeds returned the following year. In trials comparing Monolith and Atlantis, Monolith resulted in 28 fewer black-grass heads as the graph shows.
Crucially, these differences in head number affect yield. Based on AHDB Project Report 560 (Sustaining winter cropping under threat from resistant black-grass),
we can calculate that 30 fewer heads /m2 boosts yield by 0.3 t/ha. A useful boost to production and fewer black-grass seeds returned to the field too. The image below the improvements in control from Monolith against a range of grassweed at our Chishill weedscreen.
The final point, is that Monolith’s exceptional grass weed control is at the expense of some activity on broad-leaved weeds so consult the label before making the switch if you have been using Atlantis as an all-purpose spring herbicide.