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


Regional Crop Report South East,   16 March 2007
Winter Wheat
Comment on current growth stages Field conditions
September and early October sown crops are generally at GS 30, with the most advanced crops around GS 31 (particularly if basal fertility is high). Leaf 4 emergence is now well underway in these earlier sown crops - order of development as follows - Einstein (most advanced) >Robigus >Solstice >Alchemy >Claire. Tip of leaf 3 emerging on Einstein (a month earlier than last year), the crop is in fertile and sheltered field. Late October/early November sown crops are now at mid-tillering. Early nitrogen + S been completed on late-sown wheats, second wheats, rabbit grazed fields and Soissons. 10 days of dry weather has transformed field conditions, and all but lowest lying or wettest ground is now accessible.
Main diseases Present Level and comment
Brown Rust Still common in all September sown crops of Alchemy, Claire and Solstice although drying up after colder weather. No action required until T0 timings in mid/late March.
Mildew Still hard to find active pustules following cold snap in early February.
Septoria tritici Lesions now obvious on older leaves of all September/early October sown wheats and with ongoing wet and mild conditions the level of Septoria inoculum is inevitably high.
Yellow Rust None seen.
Eyespot Some stem based browning can now be found in earlier sown second wheats in particular - will need close monitoring in Spring.
Other None seen.
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 Gout fly - some very high levels of infestation noted in a few locations (80-100% plants), primarily in fields located in sheltered valleys and also blocks of continuous wheat - affected plants have up to 2-3 gouted tillers present, with relatively weak remaining tillers - these crops will need early nitrogen.
Main weed problems Level and comment
Blackgrass Low levels of blackgrass (GS 21-29) can be found in some crops treated in late October/November.
Meadow grasses Control measures in place.
Rye grass Appears to be a significant flush in problem fields this autumn (at GS 10-13).
Bromes  
Cleavers Large flush present in some crops at cotyledon to 2 whorls.
Others Cranesbill becoming an increasing problem.

 
Regional Crop Report South East,   16 March 2007
Winter Barley
Comment on current growth stages Field conditions
Earliest sown crops now at GS 30+, with most crops around GS 29-30. 10 days of dry weather has transformed field conditions, and all but lowest lying or wettest ground is now accessible.
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 Significant levels noted in crops of Sequel that follow barley.
Yellow Rust None seen.
Eyespot None seen.
Rhynchosporium Low levels can be found in thicker crops.
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,   16 March 2007
Winter Oilseed Rape
Comment on current growth stages Field conditions
All crops now extending & at early green bud stage. GAI canopies currently around 1.5-2+, indicating around 80-100+kg/ha nitrogen already within the crop. 1st N+S now being/been applied. 10 days of dry weather has transformed field conditions, and all but lowest lying or wettest ground is now accessible.
Main diseases Present Level and comment
Club root No further reports.
Downy Mildew None seen.
Light Leaf Spot None seen.
Phoma Crops retreated in December remain free from any re-infection.
Powdery Mildew None seen.
White Leaf Spot None seen.
Other None seen.
Main Pest problems Level and comment
Aphids None seen.
Flea beetle No further reports.
Leatherjacket None seen.
Slugs Crops beyond growth stages where damage can occur.
Other No further reports of damage.
Main weed problems Level and comment
Blackgrass  
Meadow grasses
Rye grass Heavy infestations in some fields.
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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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.