| Regional Crop Report South West, 02 March 2007 |
| Winter Wheat |
| Comment
on current growth stages |
Field
conditions |
| Increasing
number of crops at GS 30, not just in sheltered area. GS 30 common
in Einstein, Robigus and Deben. Less common in slower developers such
as Claire and Alchemy. Crops commonly sit at this stage for quite
some time until day length and temperature triggers signal stem extension.
What is unusual is the number of tillers on plants which are at GS30,
it is not just the lead tiller as is often the case. |
Wet
and no land work possible. |
|
| Main
diseases Present |
Level
and comment |
| Brown
Rust |
Trace
in Alchemy and Claire |
| Mildew |
Seems
to have freshened up a little. |
| Septoria
tritici |
Very
low levels in most varieties. |
| Yellow
Rust |
None
seen. |
| Eyespot |
The
thickest early sown crops are showing stem base browning. Not specifically
identified as eyespot. |
| Other |
None
seen. |
| Main
Pest problems |
Level
and comment |
| Aphids |
Untreated
crops in need of treatment. |
| Frit
fly |
None
seen |
| Leatherjacket |
No
reports of further damage. |
| Opomyza |
None
seen |
| Slugs |
No
reports of further damage. |
| Wheat
bulb fly |
None
seen |
| Wireworm |
None
seen |
| Other |
None
seen |
| Main
weed problems |
Level
and comment |
| Blackgrass |
Any
untreated area will be left until days lengthen in Late Feb./early
March. |
| Meadow
grasses |
Well
controlled by pre emergence materials. |
| Rye
grass |
Pre ems have worked well,
follow up treatments now being applied. |
| Bromes |
|
| Cleavers |
Emergence
appears to be continuing |
| Others |
|
|
| Regional Crop Report South West, 02 March 2007 |
| Winter Barley |
| Comment
on current growth stages |
Field
conditions |
| A
few crops at GS30 but all now looking very yellow. Take care with
PGR timings as many Chlormequat formulations are only approved
until the end of GS 30 in Winter Barley. Statutory Management Requirement
9 makes caution vital if SFPs are not to be jeopardised. |
As
wheat |
|
| Main
diseases Present |
Level
and comment |
| Brown
Rust |
Brown
rust is readily detectable in many varieties. |
| Mildew |
At
low levels in most varieties. |
| Net-blotch |
No
change. |
| 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, 02 March 2007 |
| Winter Oilseed Rape |
Winter
Oilseed rape |
| Comment
on current growth stages |
Field
conditions |
| Flower
buds still encased in leaves except for a few isolated plants at buds
visible above crop. Image analysis using ADAS/BASF tool shows canopies
ranging from GAI 3 to 0.45, a range in crop nitrogen from 150 to 22.5
kg/ha. |
|
|
| Main
diseases Present |
Level
and comment |
| Club
root |
No
fresh reports. |
| Downy
Mildew |
New
growth generally appears disease free. |
| Light
Leaf Spot |
None
seen |
| Phoma |
Follow
up treatments have curtailed respotting. |
| Powdery
Mildew |
None
seen |
| White
Leaf Spot |
None
seen |
| Other |
None
seen |
| Main
Pest problems |
Level
and comment |
| Aphids |
None
seen |
| Flea
beetle |
None
seen |
| Leatherjacket |
None
seen |
| Slugs |
Crops
now beyond stage where damage can occur. |
| Other |
Pigeons
still scarce but a spell of cold weather may well change things. |
| Main
weed problems |
Level
and comment |
| Blackgrass |
|
| Meadow
grasses |
|
| Rye
grass |
Very
well controlled by cycloxydim. |
| Bromes |
|
| Cleavers |
So
far being held by metazachlor/quinmerac combinations. |
| Others |
|
|
Crop Report compiled by Farming Online from reports
received by members from the Association of Independent Crop Consultants
