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


Regional Crop Report South West,   1 June 2007
Winter Wheat
Comment on current growth stages Field conditions
Main tillers now at or beyond anthesis. Side tillers range from booting to fully emerged with anthesis just commencing. The recent rains should ensure the viability of these tillers, which have extra importance this year as so many tillers were lost during the April drought. 50mm plus rain on Sunday and more early this week has wetted up soils considerably. On lighter, weaker structured soils there is slight (around 5 to 10 degrees) leaning where heavy rain has softened soil around the roots and weakened root anchorage. This phenomenon seems most marked in Einstein. All these crops were drilled at sensible seed rates with normal PGR strategies and if anything looked a little thin following the dry April. Good crop management cannot control extreme events!
Main diseases Present Level and comment
Brown Rust Fungicide programmes have contained the disease but it has been a battle. With hindsight T1 spend should have been at T0 on the most susceptible varieties. The epidemic does seem to have been inoculum driven with the earliest sown crops seemingly the worst affected. It has been a perfect year for Brown Rust with a mild winter to ensure inoculum survival and then a change in the calendar to bring July forward to April. A high proportion of the wheat area sown to susceptible hosts completes the winning combination for the disease. Will try hard not to overreact following an atypical year. May consider Baytan treatment for Alchemy when drilled early. Seems to be a clear shift in rust levels between September and October drillings.
Mildew Levels still not giving cause for concern. Generally only on the stem.
Septoria tritici Lowest levels of Septoria for many years.
Yellow Rust Outbreaks in Robigus now contained.
Eyespot Starting to build again especially in drill overlaps
Other None seen.
Main Pest problems Level and comment
Aphids Aphids small colonies of bird cherry aphids building on leaves one and two.
Frit fly None seen
Leatherjacket No reports of further damage.
Opomyza None seen
Slugs None seen
Wheat bulb fly None seen
Wireworm None seen
Other Wheat blossom midge levels are low and evenings conducive to flight have been rare. Nothing treated.
Main weed problems Level and comment
Blackgrass No further reports.
Meadow grasses No further reports.
Rye grass No further reports.
Bromes  
Cleavers No further reports.
Others  

 
Regional Crop Report South West,  1 June 2007
Winter Barley
Comment on current growth stages Field conditions
Crops milky to soft cheesy ripe. 50mm plus rain on Sunday and more early this week has wetted up soils considerably.
Main diseases Present Level and comment
Brown Rust None seen
Mildew None seen
Net blotch None seen
Yellow Rust None seen
Eyespot None seen
Rhynchosporium None seen
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  
Meadow grasses
Rye grass
Bromes
Cleavers
Others

 
Regional Crop Report South West,  1 June 2007
Winter Oilseed Rape
Comment on current growth stages Field conditions
High level of Sclerotinia in a spray miss. Plants were almost completely dead with 2 feet of stem grey and mouldy with sclerotia formed in the stem. From a distance this part of the field appeared completely brown. The disease was so advanced that infection must have taken place extremely early when conventional wisdom suggested that it was too dry. Driving around the countryside it is easy to spot rape crops which have had no treatment.
  
Main diseases Present Level and comment
Club root No fresh reports.
Downy Mildew None seen
Light Leaf Spot None seen
Phoma None seen
Powdery Mildew None seen
White Leaf Spot None seen
Other  
Main Pest problems Level and comment
Aphids None seen
Flea beetle None seen
Leatherjacket None seen
Slugs None seen
Other  
Main weed problems Level and comment
Blackgrass None seen
Meadow grasses None seen
Rye grass None seen
Bromes None seen
Cleavers None seen
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.