Syngenta Summer Autumn Guide 2020 - Page 46



CEREAL DISEASE
MANAGEMENT
LEARNING LESSONS FROM THE PAST
THE IMPORTANCE OF MULTI-SITES
HOW DO THEY WORK?
History clearly tells us that single-site fungicides used
without the addition of a multi-site can quickly succumb to
resistance evolution. Alternative multi-sites such as folpet
can be used to manage resistance and extend the life of
existing chemistry.
THE CHLOROTHALONIL TIMELINE:
Septoria becomes resistant to
strobes and CTL use increases
Chlorothalonil (CTL)
introduced and becomes
key fungicide product
SDHIs introduced;
chlorothalonil
use declines
Triazole performance
declines as diseases
become more resistant
EU revokes
approval of
chlorothalonil
CTL use alongside
SDHIs increases as
we learn more about
disease resistance
Use of CTL declines when strobilurins are
introduced due to their high Septoria control
when mixed with triazoles
Mutli-sites target multiple paths
of the fungus development,
such as spore germination, cell
division and energy production
in mitochondria.
Trials show that multi-sites
improve disease control and
can delay the development of
resistance in other actives.
CLICK TO WATCH
our multi-site animation
CLICK TO SEE our
multi-site graph walkthrough
Please advise links
46
Assuming a CO2 equivalent of 21x for methane and 296x for Nitrous oxide
ANDY BARR
FARMER, KENT

Watch our multi-site animationMulti-site graph walkthrough

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