Syngenta Summer Autumn Guide 2020 - Page 1



GRASS
WEEDS
KEY LEARNS FROM BARTON BLACK-GRASS FOCUS
SITE SO FAR
Good grass weed control
relies on strategic control
for the long-term view and
proactive tactical control.
The key insights from Barton come
from overlaying weed control tactics
over multiple years, and monitoring
both weed control and margins.
Syngenta grass weed research at
the Barton Black-grass Focus Site
and Doncaster Ryegrass Focus Site
is combining innovative and practical
integrated control solutions to manage
grass weed populations at economically
and agronomically sustainable levels –
and it is working. Explore how you could
incorporate various techniques into your
on-farm strategies.
1. KNOW WHAT YOU’RE UP AGAINST
WATCH OUR
GRASS WEED
EXPERTS VIDEOS
Syngenta Field
Technical
Manager black-grass
focus site – Barton
•Where is your weed seed in the
soil profile?
• What is the resistance status?
• What is the dormancy level?
• Informs cultivation decisions
•Establishment method impacts
herbicide strategy
At Barton, in our matrix field, we have crossed both cultivation technique and
crop species to look at the effect of these factors across the rotation. The
plan below shows years 1-3. The work will continue for 5 years to enable to
effects of the rotation to become evident, for both grass weed control but
also margin over input costs across the rotation.
CULTIVATION MATRIX - ESTABLISHMENT
YEAR 1
YEAR 2
ANDY
CUNNINGHAM
DRILL DATE
COVER CROP
PRE-EM STACKING
NOZZLE CHOICE
SPRING CROPPING
OPTIONS
SEED RATES &
TREATMENTS
TIMING &
SEQUENCES
WEATHER
CONDITIONS
PLANT SPACING
SEEDBED
CONDITIONS (INC.
TRASH)
DRILL TYPE
ADJUVANTS
SEED DORMANCY
12
S. WHEAT (DD)
WW – DIRECT
DRILL
WW – PLOUGH
WW – MIN-TILL
W. BARLEY
WATER RATES, SPEED
AND BOOM HEIGHT
W. WHEAT
AI CHOICE
S. BARLEY (DD)
W. WHEAT
CROP SPECIES
Watch our grass weed
experts video series from the
sites where they walk through
trial updates throughout the
season, demonstrate novel
techniques and suggest
solutions to manage weed
populations.
Look out for results meetings at
www.syngenta.co.uk/events
S. BARLEY
CULTIVATION &
ROTATION
WINTER
BARLEY
HYVIDO BARLEY
(DD)
WW – DIRECT
DRILL
Kill the weed using
chemicals
Maximise the
benefit ofchemical
control
WW – MIN-TILL
Increase the crops
ability to outcompete the weed
WW – PLOUGH
Interfere biology
to limit the weeds
potential
WW – PLOUGH
APPLICATION
WW –
SPRING
DIRECT DRILL BARLEY
W. BARLEY (DD)
WW – DIRECT
DRILL
DIRECT CHEMICAL
CONTROL
WW –
MIN-TILL
YEAR 3
CLICK HERE FOR
RESULTS ON HOW EACH
CULTIVATION PERFORMED
IN EACH SEASON
WW – PLOUGH
COMPETITIVE
CROP
Syngenta Trialling
Field Technical
Specialist, ryegrass
focus site –
Doncaster
WW –
PLOUGH
WW – MIN-TILL
GRASS WEED CONTROL AREAS INVESTIGATED AT BARTON
AND DONCASTER
GEORGINA
WOOD
IMPLICATIONS:
WW – MIN-TILL
An integrated approach to grass weed control is critical, taking into consideration
cultural control options, herbicide strategy and application technique.
CONSIDER:
WW – DIRECT
DRILL
A TOTAL APPROACH TO GRASS WEED CONTROL
BIOLOGICAL
DISRUPTION
The site is now in its fourth year and
we have begun to establish some
interesting principles.
13

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