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Regional Crop Report South East,   27 April 2007
Winter Wheat
Comment on current growth stages Field conditions
A combination of recent warmth, generally low residual N status and continuing dry weather, hampering N-uptake, is forcing many wheat crops into stress induced physiological development with accelerated leaf emergence. So much so that many September and early October sown crops range between GS 33 (Claire/Alchemy) with leaf 2 up to 2/3 emerged up to GS 37 (late September sown Xi19). All late September and early October sown crops of Einstein and Solstice now have leaf 1 up to 1/4 emerged - most of these crops were only at tip of leaf 3 emerging around 18-21 days ago. Late October/early November sown crops are now at GS32 with leaf 3 emerged and leaf 2 around 30-50% emerged. All crops of Soissons drilled in October/November are now at GS 37-45, with ear emergence likely next week. A combination of delayed N-uptake and the unusual weather conditions this Spring, have reduced yield potential even on the better soils (substantially so on poorer soils). There is widespread tiller abortion in crops leaving many canopies much thinner than usual. This also needs considering when planning fungicide spend. Still very dry and it is now 6 weeks since any notable rainfall.
Main diseases Present Level and comment
Brown Rust Still very widespread on lower leaves all September sown crops of Alchemy, Claire and Solstice, with active pustules still evident in crops where T0 triazoles applied.
Mildew Still very hard to find any active pustules.
Septoria tritici Lesions can be found on leaf 4 of early sown Solstice and Xi19
Yellow Rust In Robigus in the Halstead region, and Buntingford, Herts, all on hilltops, some only on North face. Could be Northerly wind from Cambridge area.
Eyespot Can still be found in earlier sown second wheats and Solstice/Robigus as first wheats.
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  
Bromes  
Cleavers Large flush present in some crops at cotyledon to 2 whorls.
Others Cranesbill becoming an increasing problem.

 
Regional Crop Report South East,  27 April 2007
Winter Barley
Comment on current growth stages Field conditions
Most crops of Sequel/Pearl are now at GS 45-49 with awns emerging, whilst Boost is at early ear emergence. Where T1 sprays applied in first 10 days April, net blotch has not moved from base of canopies. However, in any later applications net blotch has jumped up all leaf layers. A combination of delayed N-uptake and the unusual weather conditions this Spring, have reduced yield potential even on the better soils (substantially so on poorer soils). There is widespread tiller abortion in crops leaving many canopies much thinner than usual. This also needs considering when planning fungicide spend. Still very dry and it is now 6 weeks since any notable rainfall.
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 Where T1 sprays applied in first 10 days April, net blotch has not moved from base of canopies. However, in any later applications net blotch has jumped up all leaf layers.
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 No further treatment.
Meadow grasses
Rye grass
Bromes
Cleavers
Others

 
Regional Crop Report South East,  27 April 2007
Winter Oilseed Rape
Comment on current growth stages Field conditions
All crops now at mid-late flower (20-30 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.
Still very dry and it is now 6 weeks since any notable rainfall.
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 continuing very dry weather and soil surfaces, coupled with very little petal sticking, means that the risk of infection remains very low.
Main Pest problems Level and comment
Aphids None seen.
Flea beetle No further reports.
Leatherjacket None seen.
Slugs  
Other Mealy Aphids foci right across some fields, high numbers, and very early to arrive. Threshold is 13% of plants infested
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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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.