A new fungicide seed treatment for winter wheat and barley from Chemtura has been launched in time for autumn 2008 drillings.

Containing the triazole fungicide ipconazole, Crusoe will be demonstrated at Cereals 2008.

It combines high levels of disease control with a novel micro-emulsion formulation, the firm says, and offers application and environmental benefits and high crop and operator safety standards.

Ipconazole has been developed for seed treatment use only, Mike Wenham of Chemtura says. “It has a broad fungal spectrum, controlling all fungal classes except Phycomycetes (pythium).”

Currently bunt, loose smut and leaf strip are on the label, while an application to add fusarium has been made. That submission also aims to extend its use to spring cereals.

seed treatment

A standard seed dressing offering easier handling will be available next autumn

Crusoe’s unique micro-emulsion formulation should benefit operators, Mr Wenham says. “Because it doesn’t contain any solid particles, there’s no dust to contend with. It also has low viscosity, remaining stable at high and low temperatures, which results in easier calibration of application equipment. There’s very little odour, it only requires minimal agitation and sedimentation never occurs, even in storage.”

The very small emulsion droplet size in the formulation gives better seed coverage and improved efficacy, he adds.

“While many of these attributes bring huge advantages in the seed plant, making application quicker and easier, growers also benefit from improved seed flow through drills and other equipment.”

Crusoe is approved at a rate of 1 litre/t in winter wheat and 1.3 litres/t in winter barley, and can be co-applied with a range of other seed treatments, allowing growers to match their seed treatment use to specific requirements.

Production of Crusoe in its first year will be limited to just sufficient for 15,000t of seed. The suggested retail price is £45/t for winter wheat and £48.50/t for winter barley

“At a time when farming is under greater scrutiny than ever before, the introduction of a new seed treatment with excellent environmental, application and safety standards is good news for the industry,” concludes Mr Wenham.

“Over the next few years, we hope to be in a position to launch two other novel seed treatments, as well as some co-formulation developments.”