BASF is also joining the event, which is taking place on 14-15 October from 10am until 5pm at Rijk Zwaan's site at Kirton Holme, near Boston, Lincolnshire.
BASF will be discussing its range of products, in particular it fungicides.
Visitors to the event will also be able to see Rijk Zwaan's range of brassicas, which have been grown on the trial plots.
A Rijk Zwaan representative said: "The trial at Kirton Holme is looking very well despite the fact that Lincolnshire has been experiencing some very dry weather.
"Thankfully, the pigeons have moved on to neighbouring pea stubbles and have at least given us some respite."
As usual, Rijk Zwaan staff will be on hand to guide growers around the trials and answer any questions.
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