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Report: 31 May 2013 (for week beginning 27 May 2013)

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

31 May 2013: The occasional outbreak of spring last weekend helped improve the look and growth of many crops but the low temperatures during the week has hindered continued development. Not a brilliant week for field work and heavy rain at the beginning of the week has left some fields too wet to travel. All in all not perfect conditions for the all important T2 fungicide applications. Although disease levels in crops are reported as low conditions over the past week have favoured the development of Septoria, fusarium and Sclerotinia. Spring cereals in general are approaching or are at GS 30 and disease levels are low. However, rain and nitrogen have led to a mass of weeds in some fields.

Keep checking for seed weevil as weather warms up.:

Risk of Sclerotinia.:

Earliest winter wheat now booting.:

Ears emerging in forward winter barley.:

Late flush of weeds in winter cereals.:

Winter Wheat

image from FoL

Flag leaves emerging in forward crops (photo courtesy Farming Online)

South East: A combination of some warmer ?growy? days and showery conditions have encouraged some accelerated growth, with many autumn sown wheat crops now catching up with flag-leaves typically fully emerged and even some ears beginning to break the boot. In particular, September and early October sown Gallant, Cordiale and Solstice are now around GS 39-45+ on main shoots. Other varieties and crops sown before the end of October now range between GS 33-39 with flag leaves typically 2/3-Fully emerged on main shoots. Otherwise, later autumn sown crops are around GS 32-33 with the tip of flag leaf starting to emerge. Crops sown in January/February are around GS 31-32 with leaf 3 fully-emerged on main shoots.

Septoria tritici: September sown Cordiale and Scout are showing high levels of infection on leaf 5 and below, with some infection now visible on the tip of Leaf 4, otherwise most wheats are still only showing very low levels of infection on the lower leaves.

Yellow Rust: None seen.

Brown Rust: None seen

Mildew: Traces in some crops.

Eyespot: None seen.

Weed control: Blackgrass control showing mixed results.

Eastern Counties: Majority of wheat crops now at early to full flag leaf emergence with some signs of booting. The late drilled and more backward crops are still at GS 33.

Septoria tritici: Trace levels on lower leaves.

Yellow Rust: None seen.

Brown Rust: None seen.

Mildew: Trace levels.

Eyespot: Can find some eyespot.

Weed control: There is a lot of bindweed, knotgrass, fat hen and charlock coming through late.

East Midlands: Most crops have flag emerging with a few later crops at leaf 2 ? the past week of almost wintry temperatures at times has slowed development down. After a week of on/off heavy rain soils now very wet and will need a few days to dry out with some localised ponding.

Septoria tritici: Top 5 leaves continue to remain fairly clean with the top 4 leaves very clean.

Yellow Rust: Reports of yellow rust in Warwickshire and in Solstice in Leicestershire.

Brown Rust: None seen.

Mildew: Very low levels mainly at stem base.

Eyespot: Levels are low with many stems clean.

Weed control: Knotgrass and fat hen continue to dominate thin and bare areas. Wild oats now becoming more prominent.

West Midlands: Early wheat now has flag half out to fully emerged but no booting seen as yet, October wheat in the main has flag leaf emerging to half out but not moving quickly enough. Crops have picked up despite the cold and it is beginning to look like spring at last just a pity we only have three weeks to the longest day.

Septoria tritici: Confined to the bottom of the crop. However, plenty of crops with leaf 5 and older going yellow.

Yellow Rust: No fresh sightings.

Brown Rust: None seen.

Mildew: Has appeared in the bottom of quite a few crops over the last fortnight.

Fusarium/Eyespot: Only at low levels.

Weed control: Herbicides applied three to four weeks ago now showing good control of broad leaved and grass weeds. Late sown crops now have a flush of weeds emerging.

North East: Most Winter wheat GS 31-33. Odd Forward crops at GS 37 with flag leaf just visible. Some fields have unusually large gap in growth stages within field owing to a rough start caused by wet and cold conditions. Canopy development is slow, so weeds have had more chance to germinate with wet and warmer weather. Generally crops are looking short for this time of year and are probably 2 ? 3 weeks behind from bench mark.

Septoria tritici: Active on lower leaves of some varieties but not moving up the crop.

Yellow Rust: None seen.

Brown Rust: None seen.

Mildew: None seen.

Weed control: Warmer weather bringing out early spring weeds.

Wheat Bulb Fly: Low levels in some crops.

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Winter Oilseed Rape

image from FoL

Seed weevil (photo courtesy Farming Online)

North East: Finally all crops are in flower! Around 50% of crops are now at mid to late flower, with remaining crops between early flowering and mid-flowering.

Sclerotinia: With crops flowering, and soil temperatures ranging between 7-10ÂșC in warmer spells and with plenty of soil moisture, conditions are ideal for apothecia emergence and spore release.

Pollen Beetle: Panic over now that most crops are flowering.

Seed Weevil: Adults can be still be readily found on any warmer afternoons in upper flowers.

Eastern Counties: The earliest fields are rapidly losing flowers and pod set looks good. The pigeon damaged fields are now coming into full flower and producing more flowering sites than expected on some very short rape plants. Rain on Tuesday and Wednesday so plenty of petal stick opportunities.

Sclerotinia: Second flowering sprays planned for later this week on more forward/good crops which received first Sclerotinia spray 3 weeks ago.

Seed Weevil: Very little seed weevil activity seen over the last week.

Weed control: Thin poorly competitive crops are going to allow some weed problems to show through later. On light land some poppies will come through in thin crops.

East Midlands: All crops still in full flower and at this rate it is hard to see any rape harvest before mid August unless there is a summer heat wave. Some later patches still just starting to flower.

Sclerotinia: Crops treated.

Pollen Beetle: Numbers remain low but have treated a few backward crops.

Seed Weevil: No reports of major weevil numbers but then weather not conducive to weevil activity or looking for them.

Weed control: Reports of cleavers starting to recover after herbicides in thin areas where no crop competition, same with mayweed.

West Midlands: Pretty much all crops now flowering with light land or early varieties (eg. Troy/Cubic) along with early sown crops just starting to turn this week.

Sclerotinia: Petal fall starting and petals sticking to crop.

Pollen Beetle: Still hard to find.

Seed Weevil: Too cold and wet over the last week for them.

North East: Crops still range from yellow bud to mid-flowering. Crops are shorter this year especially in backward plantings.

Pollen Beetle: Odd beetle seen in crops at green bud, but levels much lower than previous years.

Seed Weevil: None seen.

Pigeons: Becoming less of a problem.

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Winter Barley

South East: Most barley crops are now either at awns emerging or ears emerged, but still around 2 weeks behind normal. All crops remain short, even Volume, consequently very few have had late PGRs applied. Disease levels remain very low.

Eastern Counties: Most crops are fully out in ear now but some of the poorer crops are still at flag leaf to awns emerging.

East Midlands: Awns emerging and T2 on so now gates shut. Crops remain clear of all diseases and look generally well but a bit short.

West Midlands: Awns emerging on most crops and ears fully emerged on earlier crops. Disease levels remain low.

North East: Crops at GS 33-49. Most crops in booting but odd forward crops have first spikelet of ear visible. Many crops looking shorter than usual.

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

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