Casoron G is going! 

Growers faced with yet another loss to their herbicide armoury are being advised of their options in the run-up to the withdrawal of dichlobenil.

Used for residual weed control in amenity, non-crop areas, aquatic situations and soft and top fruit situations, products based on the active ingredient are still available for sale until 18 March 2009 and for use up by 18 March 2010

Products affected include Certis Dichlobenil Granules, Luxan Dichlobenil Granules and Casoron G, which are suitable for pre-emergence and post-emergence control of a range of annual and perennial broad leaved weeds and grasses.

Certis Technical Officer Alan Horgan says that; “Recent mild winters and the seemingly earlier start to spring growth mean that growers choosing to use Casoron G or dichlobenil granules whilst available, should look to make applications earlier than in previous years. The ideal application times are in February to March, with soil applications made during cold or cool weather when the risk of winter rains have mostly passed.”

He also notes that before considering applying a herbicide to any watercourses for aquatic weed control, users must speak to their local water regulatory body (Environment Agency or Scottish Environment Protection Agency).

Alan adds that dichlobenil has been important in many weed control programmes, providing season long weed control. “Growers therefore need to start planning their future weed control strategies, seeking out alternative products and if necessary gaining some experience with them.”

He notes that for aquatics there are currently no other alternatives, but he is more upbeat for other sectors. “The residual herbicide Ronstar, either in the granular form or as a liquid treatment, could be a suitable alternative in some circumstances, but that it will depend on the weed spectrum and the particular usage situation.

• It can be purchased until March 18th 2009

• It can be used until March 18th 2010