WhoshouldIsee Tracks

News From The Field - HEAR 2021/22

July 2022

Combining has begun and early yields are looking good for HEAR crops with several growers reporting over 4 mt/ha and one with a yield of 4.55mt/ha.

HEAR variety Rocca at harvest in North Lincolnshire

June 2022

Crops are on the turn, with thoughts turning towards desiccation towards the end of June for the most forward crops. Crops are looking well and there are plenty of pods, with that in mind consider pod stick to minimise seed loss before harvest.

HEAR variety Rocca approaching maturity in North Lincolnshire

HEAR variety Rocca approaching maturity 2 in North Lincolnshire

May 2022

Crops are looking well and ending flowering and are podding up nicely. Seed weevil and pod midge levels do not seem to be too high this year, but worth keeping an eye on.  

HEAR variety Rocca at pod fill in North Lincolnshire

April 2022

Crops are now in full flower at the end of the month nears. In general, most HEAR crops are looking well and even.

HEAR variety Rocca in full flower in North Lincolnshire

Disease forecasts for Sclerotinia remain low whilst the weather is dry as we head into May, but farmers should keep an eye on the weather and the AHDB forecast model, which shows it is starting to come in places. See: AHDB Sclerotinia forecast model, https://ahdb.org.uk/sclerotinia-infection-risk-alerts-for-oilseed-rape

March 2022

Crops are pushing on and generally looking well. Crop that have not suffered from pigeon grazing are ranging from green-bud to flowering. Those crops still in stem extension are receiving or have had their final fertiliser doses. Remember to take into account the GAI (green-area index) when calculating final dose rates given prices of fertiliser.

There are reports of pollen beetles present, but not currently at high numbers. Remember do not treat them unless thresholds are reached.

HEAR in Suffolk at green bud stage

Disease levels remain low for most of the country, however Light leaf spot is present in the North and West according to AHDB forecasts. Stem extension fungicides are available for application.

AHDB LLS forecast March 2022 

See: AHDB LLS forecast https://ahdb.org.uk/light-leaf-spot-forecast

Thoughts are now turning to Sclerotinia sprays at flowering. There is an updated AHDB Sclerotinia forecast model that is well worth a visit. Generally, it is at low levels, but the south/ south west are predicted to have higher levels.

AHDB Sclerotinia forecast March 2022

See: AHDB Sclerotinia forecast model, https://ahdb.org.uk/sclerotinia-infection-risk-alerts-for-oilseed-rape

By selecting an area near to your farm, e.g. Bedford, in the example below, the forecast tool delivers a lot more details. 

AHDB Sclerotinia forecast March 2022 example

 

January / February 2022

OSR crops are looking well coming out of a reasonably dry winter. Pigeon damage has been seen in some crops and growers should keep an eye out for damage, so not to lose green leaf area heading into final fertiliser applications. Crops are at various canopy sizes depending on sowing date. Remember to adjust fertiliser rates according to green leaf area.

HEAR plot Feb 2022

Light leaf spot is starting to come into crops further north and west according to AHDB forecasts. Growers should keep an eye out for symptoms as crops will soon grow on into stem extension as weather warms.

AHDB LLS Forecast Feb 2022

AHDB LLS forecast https://ahdb.org.uk/light-leaf-spot-forecast

Cabbage Stem Flea Beetle Research

As part on on-going research into CSFB in OSR NIAB have along with industry partners embarked on research into the pest. NIAB are calling for OSR samples to assess larvae numbers, and it is free! To get updates about the research or get involved follow https://www.niab.com/csfbsmart

CSFB Smart sample requirements

email: This email address is being protected from spambots. You need JavaScript enabled to view it.

 

November / December 2021

Crops are slowing down, the mild November means the risk of disease has increased and fungicide applications are now being considered. Many are waiting for conditions to cool before applying Kerb for blackgrass.

Rocca HEAR in Gloucestershire Nov 21

Disease Forecasts...

Phoma forecast https://ahdb.org.uk/phoma-leaf-spot-forecast

Phoma Leaf Forecast Nov21

Looking ahead the AHDB have released a preliminary forecast for Light Leaf Spot (LLS) depending on rainfall. Selecting different rainfall scenarios shows different risk levels of LLS.

Light Leaf Spot Forecast Nov 21

Forecasts for Light Leaf Spot can be found here  https://ahdb.org.uk/light-leaf-spot-forecast

 

October / November 2021

Crops are starting to slow down for winter now, most weed control for broad leaf weeds should be completed by now. Applications of Kerb for blackgrass are waiting on colder weather.

Rocca HEAR in Cheshire Oct 2021

The risk of Phoma has increased in October, see below and Figure 4. Fungicides will need to be applied where thresholds are met.

Phoma Leaf spotting seen on 25th October

The AHDB's Phoma forecast https://ahdb.org.uk/phoma-leaf-spot-forecast is showing increasing incidence of disease across most parts of the UK...

Phoma Leaf Forecst 29Oct21

 

Forecasts for Light Leaf Spot are expected soon: https://ahdb.org.uk/light-leaf-spot-forecast

 

September / October 2021

Crops are generally looking well, some a little too well with PGRs being considered to stop canopies getting too ‘winter proud’. Thoughts are now turning to post-emergence applications as the rain dries up to allow travelling on fields. Most have already applied a graminicide for volunteer cereals, but thoughts are now turning to well emerged blackgrass and broad-leaved weeds. With larger canopies growers should check the crop size before applying herbicide, such as Belkar to ensure good herbicide contact for weed control.

HEAR variety Rocca on 19th September

Phoma Risk Levels

With the rain the risk of Phoma increases, growers should keep an eye on the AHDB Phoma forecast for fungicide applications. According to the AHDB's Phoma Forecasting tool Phoma levels are at a lower incidence than the previous two seasons.

Phoma forecast from AHDB Key green no infection orange infections taking place and red at 10 incidence of infectionpng

 

 

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