This gives timing advice for application to oilseed rape.
Although some Kerb® Flo 500 and ASTROKerb® recommendations are being made, soil temperatures (at 30 cms) in the oilseed rape growing areas are around 11°C – 14°C, too warm for outstanding results for blackgrass control. In many places soils are also wet which will prohibit travelling anyway.
Welcome to the first edition for this autumn giving timing advice for application to oilseed rape.
Soil temperatures (at 30 cms) in the oilseed rape growing areas are around 11°C – 14°C, too warm for outstanding results to be achieved with Kerb® Flo 500 for blackgrass control. In northern England and Scotland soils are also very wet which would prohibit travelling anyway.
Please note a 30 cm soil temperature reading is less variable than the more commonly used 10 cm reading.
For optimal blackgrass control Dow AgroSciences recommend Kerb Flo 500 and ASTROKerb® applications are made when soil temperatures have got down to 10°C and falling, and there is sufficient soil moisture in the soil for grassweed uptake. Both these criteria are rarely met before November.
Temperature and soil moisture are critical to getting the best performance from Dow AgroSciences’ two leading oilseed rape herbicides – Kerb® Flo 500 and ASTROKerb®. The Dow AgroSciences’ postcode checker as seen here is an online tool that will help decide when it is time to spray. It could not be simpler, type in your postcode and the result appears as a traffic light : Red means wait; Amber means get ready and Green means consider going. It is rare that you will get a green light before November, but as both products can be used up to January 31st, there is no rush.