RAPID ACCESS TO THE LATEST REGIONAL CROP PEST AND DISEASE LEVELS 		HGCA logo
 


Regional Crop Report South East,   20 April 2007
Winter Wheat
Comment on current growth stages Field conditions
Very warm weather at end of last week has pushed wheats into accelerated leaf emergence, so much so that September and early October sown crops range between GS 32 (Claire/Alchemy) right up to GS 37 (late September sown Xi19). All late September and early October sown crops of Einstein and Solstice now have leaf 2 up to 1/3 emerged - most of these crops were only at tip of leaf 3 emerging around 10-14 days ago. Late October/early November sown crops are now at GS 31 with leaf 3 starting to emerge. All crops of Soissons drilled in October/November are now at GS 32-39. With all forward crops having had a late T0 in first 2 weeks April, and with ongoing dry weather and low disease pressure we are delaying T1 applications until end-April/early May to prevent risk of T1-T2 gap being greater than 21-24 days. Field conditions are mostly dry and firm now.
Main diseases Present Level and comment
Brown Rust Still very widespread on lower leaves all September sown crops of Alchemy, Claire and Solstice in particular.
Mildew Still very hard to find any active pustules.
Septoria tritici Lesions very obvious on all older leaves of all September/early October sown wheats - lesions can be found on leaf 4 of early sown (24th.- 28th. Sept) Solstice and Xi19.
Yellow Rust In few crops of Robigus that were not Baytan dressed - otherwise dressed crops are clean.
Eyespot Despite ongoing dry weather, moderate stem based browning with some penetrating lesions can still be found in earlier sown second wheats and Solstice/Robigus, 1st wheats in particular. Continuing dry and breezy weather has caused older leaves and leaf sheaths to slough off, taking some infection pressure away.
Other BYDV - noticeable patches of severe virus showing in many mid-late September sown wheat crops along high-risk coastal belt, despite use of Deter and follow-up pyrethroid in November.
Main Pest problems Level and comment
Aphids  
Frit fly None seen.
Leatherjacket None seen.
Opomyza None seen.
Slugs None seen.
Wheat bulb fly None seen.
Wireworm No further damage seen.
Other  
Main weed problems Level and comment
Blackgrass No further reports.
Meadow grasses  
Rye grass Significant level of Autumn residual programme survivors in some fields.
Bromes  
Cleavers Large flush present in some crops at cotyledon to 2 whorls.
Others Cranesbill becoming an increasing problem.

 
Regional Crop Report South East,  20 April 2007
Winter Barley
Comment on current growth stages Field conditions
Most crops of Sequel/Pearl are now at GS32-33 with leaf 2 emerging, whilst Boost is at GS37-39 and not far off being in boot! T1 applications all completed and with current dry weather any disease resurgence seems unlikely. Field conditions are mostly dry and firm now.
Main diseases Present Level and comment
Brown Rust Widespread, pustules can be found in all crops of Sequel/Boost in particular.
Mildew Mostly browned pustules can be found on lower leaves Sequel/Pearl.
Net-blotch Beoming much less.
Yellow Rust None seen.
Eyespot None seen.
Rhynchosporium Becoming less noticeable now.
Other None seen.
Main Pest problems Level and comment
Aphids None seen.
Leatherjacket None seen.
Slugs None seen.
Wireworm None seen.
Other None seen.
Main weed problems Level and comment
Blackgrass Low to moderate populations now present in some crops (GS 10-13).
Meadow grasses
Rye grass
Bromes
Cleavers
Others

 
Regional Crop Report South East,  20 April 2007
Winter Oilseed Rape
Comment on current growth stages Field conditions
All crops now range early flowering to mid-flower (20 pods on main raceme). To date pod set looks encouraging and with a long flowering period looking likely as side racemes extend, hopefully yields will be respectable.
Field conditions are mostly dry and firm now.
Main diseases Present Level and comment
Club root No further reports.
Downy Mildew None seen.
Light Leaf Spot None seen.
Phoma None seen.
Powdery Mildew None seen.
White Leaf Spot None seen.
Other Sclerotinia control being planned now for at risk crops.
Main Pest problems Level and comment
Aphids None seen.
Flea beetle No further reports.
Leatherjacket None seen.
Slugs  
Other No sign of seed weevil. No crops have been found anywhere near thresholds - with a real risk of encouraging pyrethroid resistance among pollen beetle, this is not the year for routine inclusion of pyrethroids with mid-flower rape fungicides.
Main weed problems Level and comment
Blackgrass  
Meadow grasses
Rye grass  
Bromes
Cleavers
Others  





Crop Report compiled by Farming Online from reports received by members from the Association of Independent Crop Consultants

 
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This website was last updated on: 04/12/2008     © Crown Copyright Central Science Laboratory 2007
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All risk predictions published by CropMonitor are provided in good faith and are NOT a substitute for rigorous fieldwalking in combination with advice from BASIS qualified persons. CropMonitor accepts no liability for crop loss or damage resulting from the use of CropMonitor.