Wee Weed managemen d management wit t without herbicid hout - - PowerPoint PPT Presentation

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Wee Weed managemen d management wit t without herbicid hout - - PowerPoint PPT Presentation

Oct 10, 2023 125 likes •559 views

Wee Weed managemen d management wit t without herbicid hout herbicides es Strategic Farm Week - Winter 2020 Webinar Rob Fox, Sarah Cook, Poul Henning Peterson & Richard Meredith Housekeeping Strategic Farm Week Winter 2020

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Wee Weed managemen d management wit t without herbicid hout herbicides es

Strategic Farm Week - Winter 2020 Webinar

Rob Fox, Sarah Cook, Poul Henning Peterson & Richard Meredith

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Housekeeping

@AHDB_Cereals #strategicfarm #SFWeekWinter2020

Strategic Farm Week – Winter 2020 ahdb.org.uk/sfweek-winter-2020

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BASIS/NRoSO Points

Name; NRoSO Member No; Date of Birth; Postcode Name; BASIS Account No; Postcode

2 points

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Format

15:10 – 15:30 Rob Fox, Squab Hall Farm & Strategic Farm West Host 15:30 – 15:50 Sarah Cook, ADAS Research Scientist 16:05 – 16:30 Panel discussion and questions from the floor Your host… Richard Meredith Head of Arable Knowledge Exchange 15:50 – 16:05 Poul Henning Petersen, SEGES Senior Specialist

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Handouts

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Understand what we already know about effective blackgrass management without herbicides to help make informed decisions at the Strategic Farm West, and beyond

Session objective

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Introduction to Weed Management at Strategic Farm West

Rob Fox, Squab Hall Farm and Strategic Farm West Host

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  • Higher seed rates.
  • Typically 375 - 400 seeds m2
  • Competitive varieties
  • Variable seed rates
  • Spring cropping – no second winter cereal
  • Ploughing? Direct Drilling?
  • Cleaning Machinery
  • Weed mapping and “variable” spraying
  • Diminishing chemical availability
  • Herbicide resistance
  • Stale seed beds

The journey with weed management, so far…

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  • Can we create a stale seedbed without a

chemical application?

  • What are the alternative options?
  • What are the knock on effects of adopting

these alternative actions?

Strategic Farm West Autumn black-grass trial

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20 November 2020

The site and the treatment tramlines

Power harrow + glyphosate (farm standard) Duck foot spring tine no glyphosate Vaderstad Culti Quattro no glyphosate

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Soil types Field 41

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Treatments and soil types

Power harrow + glyphosate (farm standard) Duck foot spring tine no glyphosate Vaderstad Culti Quattro no glyphosate

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18 September Blackgrass only found on the headland of tramline nearest road (41 plants) but not in any of the treatment tramlines. Mainly spring barley volunteers, up to 400/m²but the odd cleaver, charlock and groundsel found.

  • Cultivations done 18 September
  • Spring tine and Vaderstad repeated on 30 September
  • Drilled 1 October

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Weed levels pre-treatment

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Treatment 1 Power harrow + glyphosate

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20 November 2020 17

Treatment 2 Spring tine, No glyphosate

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Treatment 3 Vaderstad Culti Quattro, No glyphosate

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20 November 2020

Cleavers 26 October

28 2 57 52 20 8 8 18 Power harrow + glyphosate (farm standard) Duck foot spring tine no glyphosate Vaderstad Culti Quattro no glyphosate

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20 November 2020

Black-grass 26 October

3 15 5 5 Power harrow + glyphosate (farm standard) Duck foot spring tine no glyphosate Vaderstad Culti Quattro no glyphosate

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Things we can manage Starting in the right place with a a low population and seedbank

  • f black-grass

An adequate window of

  • pportunity to cultivate

between harvest and drilling Timing of cultivation Machinery - alternatives, depth

  • f working

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Can we create a stale seedbed without glyphosate?

Things we cannot manage Weather conditions Drying – weed death Temperature – weed germination

Keep ahead of the weeds

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5 10 15 20 25 30 35 40 November cultivation No Cultivation November cultivation No Cultivation November cultivation No Cultivation No glyphosate Autumn glyphosate Spring glyphosate Black-grass plants/m²

March black-grass count

AHDB glyphosate project Spring barley

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Autumn cultivations are valuable for black-grass control

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Weed management without herbicides: lessons from agriculture in Denmark

Poul Henning Petersen, SEGES Senior Specialist

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Brug knapperne ‘Forøge / Formindske indryk’ for at skifte mellem r

The situation in general

  • Public opinion - hardliners
  • Organic farming
  • Less or no pesticides
  • No glyphosate
  • Danish EPA
  • Scientific based assessment
  • Danish Government and Parliament
  • Supports up to now the scientific based assessment
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Brug knapperne ‘Forøge / Formindske indryk’ for at skifte mellem r

Plant production without pesticides

  • No pesticides in many water protection areas
  • Farmers rent land owned by the public where pesticides

are not allowed. They manages this land with a short horizon and the way of doing this is not sustainable

  • No professional farmers want ‘no-pesticide agreements’

with water companies

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Brug knapperne ‘Forøge / Formindske indryk’ for at skifte mellem r

10 years growing cereals without pesticides

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Brug knapperne ‘Forøge / Formindske indryk’ for at skifte mellem r

Perennial weeds challenges organic farmers

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5 years trials with weed control without pesticides

Plaughing and no herbicides Plaughing and herbicides Hand weeding of canada thistle the first 2 years and afterwards intensive stubble harrowing.

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50000 100000 150000 200000 250000 300000 350000

2012 2013 2014 2015 2016 2017 2018 2019

Hektar

Organic farming area 2012-2019

Akkumuleret areal siden 2012 under antagelse af at alle arealer forbliver økologiske og halvdel af arealer under

  • mlægning overgår til

fuldt omlagte arealer

Potential organic farming area if all converted areas stayed organic Realized organic farming area

Kilde: Danmarks Statistik, Økologiske bedrifter og arealer efter afgrøde, økologisk status og tid

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Brug knapperne ‘Forøge / Formindske indryk’ for at skifte mellem r

Glyphosate

  • We are doing some work at SEGES to find ways to grow our crops

with less or no glyphosat, but so far without any really good ideas

  • Danish Agriculture and Food Council (owner of SEGES) are

working on a volunterry iniciative to reduce the use of glyphosate (no decision yet)

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Glyphosate pre sowing Disc harrowing 5-6 cm x 3 Straw harrowing x 3 Glyphosate pre sowing Disc harrowing 5-6 cm x 3 Straw harrowing x 3

Alternatives for glyphosate in reduced tillage

25-100 % scenarie

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100000 200000 300000 400000 500000 Uspecificeret Før såning roer Før fremspiring bælgsæd Før høst bælgsæd Gartneri Nedvisning efterafrøde majs (efterår) Juletræer Før fremspiring majs Nedvisning af græsstub (frø- og græsmarker) Før såning vinterraps Før fremspiring kartofler Før høst raps Før såning majs (forår) Før såning vårsæd/bælgsæd (forår) Stub/før såning vintersæd Stub/efterafgrøde (efterår) Før høst korn Kg glyphosate per year

Use of glyphosate in DK

1.256.692 kg per year

70 percent Pre sowing maize (cover crop) Pre harvest oil seed rape Pre emergence potatoes Pre sowing oil seed rape Desiccation grass (seed/fodder) Pre emergence maize Chirtsmas trees Desiccation cover crops maize Horticulture Pre harwest beans Pre emergence beans Pre sowing sugar beets Unspecified

Pre-harvest cereals Stubble or cover crop autumn Stubble/Pre sowing autumn Stubble (october-march)

(Andre afgrøder end vintersæd)

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Brug knapperne ‘Forøge / Formindske indryk’ for at skifte mellem r

Measures/tools

  • Awareness and advice
  • Campaigns
  • Demo farms
  • Demonstration of new technology (e.g. mapping perennials from

drone photos and spot spraying)

10 % scenarie

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Brug knapperne ‘Forøge / Formindske indryk’ for at skifte mellem r

Effektiv landbrug d. 18. juli 2020 10 % scenarie

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Brug knapperne ‘Forøge / Formindske indryk’ for at skifte mellem r

https://www.landbrugsinfo.dk/basis/d/b/e/plantebeskyttelse_nedvisning_efterafgroder_glyphosat https://www.seges.tv/video/64823006/nedvisning-af-efterafgroder

10 % scenarie

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Brug knapperne ‘Forøge / Formindske indryk’ for at skifte mellem r

25 percent reduction

  • Further use of new technology
  • Strengthening of farm management
  • Costly

25 % scenarie

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Questions and Discussion

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Resources

ahdb.org.uk/sfweek-winter-2020/results

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Resources

  • AHDB publications
  • https://ahdb.org.uk/black-grass
  • Farmer experiences
  • AHDB Crop Protection & IPM team
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Strategic Farm Week – Winter 2020

Watch Strategic Farm research videos Take part in the webinars Listen to the podcast special

Download the harvest report and ‘how to’ resources

All at: ahdb.org.uk/sfweek-winter-2020

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Coming up…

Wider AHDB:

  • Monitor Farm Mondays
  • Agronomy week
  • Regional and technical

events

Info and register at: ahdb.org.uk/events

Strategic Farm Week: ✓7pm, Wed – Managed lower inputs, Part II ✓ 9am, Thurs – Flowering strips ✓ 9am, Fri – Ask the researcher

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Thank you

Richard Meredith richard.meredith@ahdb.org.uk@ahdb.org.uk 07717 493015

ahdb.org.uk/sfweek-winter-2020 #strategicfarm

@SquabRob @ImDrSarahCook @Cereals_West @AHDB_Cereals