title of presentation · lsd @ p=0.05 = 1.458 cv = 14.8% d1 stubton (06/03) = 22.52% d3 stubton...

Pest update

Becky Ward

Pest forecasting and plant clinic at PGRO

Pea moth

www.pgro.org

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2006 2007 2008 2009 2010 2011 2012 2013 2014 2015

Mean % bruchid damage in field beans in the UK 2006 to 2015

% bruchid

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2007 2008 2009 2010 2011 2012 2013 2014 2015

Mean % bruchid damage for regions

HANTS

YORKS / LINCS

E.ANGLIA

MIDLANDS

NORTH

Crop growth stage comparison 2011 – 2015

• First pod• 2011 = 2 June

• 2012 = 10 June

• 2013 = 21 June

• 2014 = 10 June

• 2015 = 14 June

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2011 2012 2013 2014 2015

% d

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Mean % bruchid damage in field beans in the UK 2011 to 2015

Influence of drilling timing on bruchid damage

Probability = <0.001LSD @ p=0.05 = 1.458CV = 14.8%

D1 Stubton (06/03) = 22.52%D3 Stubton (07/04) = 10.55%

D1 Lincoln (11/03) = 54.04%D3 Lincoln (10/04) = 22.92%

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Stubton Lincoln

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Mean % bruchid damage at Stubton and Lincoln 2015

Drilling 1

Drilling 3

Probability = <0.001LSD @ p=0.05 = 4.141CV = 30.4%

D1 (20/03) = 26.48%

D2 (08/04) = 19.25%

D3 (13/04) = 10.87%

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Drilling 1 Drilling 2 Drilling 3

% d

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Mean % bruchid damage at Dowsby 2015

Influence of plant population

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Plants/m²

Average % damage all sites 2015

Bruchid summary IPM strategy and recommendation for

control

• Check for presence

• Drilling timing – later drilling (and pod-set) leads to reduced damage levels

• There seems to be a trend that higher plant populations can lead to higher damage levels but this needs further investigation

• Temperature – 20°C for 2 consecutive days

• Crop growth stage – look for first pod

Bruchid monitoring 2016

• www.syngenta.co.uk/bruchidcast

• Please contact Becky Ward at PGRO if you

can host a trap site for 2016

• 01780 782585 or 07972 665604

• becky@pgro.org

Stem nematode in beans

Unusual incidents – bean seed fly in winter beans

Thank you

01780 782585 or 07972 665604

becky@pgro.org