East Midlands Agronomy 2018

111 Pages·2017·17.25 MB·English

by  Emily Smith

East Midlands Agronomy 2018
Tuesday 23 January 2018
Programme
09:30 Registration
10:00 Chair’s welcome and AHDB update - Harry Henderson, AHDB
Session 1: Developing a longer term agronomic plan
10:15 Managing grass weed resistance and stewardship in glyphosate use – Dr Paul
Gosling, AHDB
10:45 Your soils, your future – Ian Robertson, Glenside
11:05 Reduced soil movement in practice – Russell McKenzie, Monitor Farmer (2014-
2017) & Nuffield Scholar
11:25 Refreshment break
Session 2 Harvest 2018: halfway there
11:45 Using the fertiliser manual & app – Sajjad Awan, AHDB
12:15 Spread, spray and application management – Tom Edmondson, Catchment Advisor
12:35 Agronomist round up of issues found in the field so far – Maddy Vaughan, Indigro
12:55 Closing comments
13:00 Lunch & event close
Chair’s welcome & AHDB update
Harry Henderson, Cereals & Oilseeds Knowledge Exchange
Manager East Midlands
Managing grass weed resistance and
stewardship in glyphosate use
Dr Paul Gosling, AHDB Crop Health & Protection Scientist
Glyphosate is vulnerable
• Once thought to have a low risk of resistance
• 34 weed species worldwide now resistant
• Not all down to GMOs
• Six species are resistant in Europe
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Minimising the risk of glyphosate resistance in UK
Australian experience with annual ryegrass
(Lolium rigidum)
• Widespread development of resistance to post-em
herbicides
• Increased use of reduced and zero tillage
• Increased use of glyphosate
• Sound familiar?
• First case of glyphosate resistance 1996
• Now 680 cases of glyphosate resistance
Weed Resistance Action Group
http://www.pesticides.gov.uk/guidance/industries/pesticides/advisory-groups/Resistance-Action-Groups/wrag
Key weeds of concern
• Black-grass
• Rye-grasses
• Bromes
Good news
Good news 1:
No glyphosate-resistant black-
grass has been detected in
the UK
Good news 2:
No glyphosate-resistant rye-
grass has been detected in
the UK
However…
Glasshouse Test
Less good news
540 g a.i./ha
equivalent
(full label rate)
• Some black-grass
populations show reduced
sensitivity to glyphosate
• 132 populations tested
The best predictor of sensitivity
was glyphosate use from
September to May in the
previous 10 years
BBSRC-AHDB black-grass resistance initiative (BGRI)