7 July 1995

New products debut at sprayers event

SPRAYS and Sprayers saw a host of new product announcements from event organiser Ciba Agri-culture, plus news that Ciba and Rhone-Poulenc are working together to develop new products and equipment for the seed treatment market.

The move has already seen a joint product enter trials. It draws upon the good fusarium and bunt control of Cibas fludioxonil (Beret Gold) and the broad-spectrum control, including early foliar diseases, of Rhone-Poulencs triticonazole. "It could revolutionise broad-spectrum seed treatments," comments Gary Mills-Thomas, product manager at Ciba.

Other co-operation will involve seed treatment equipment, where R-P is introducing its high capacity 30t/hour, state-of-the-art C30 machine this season. Greater liaison with Cibas SeedCote Systems subsidiary, which provides high-tech coatings for vegetable seed, is an obvious synergy, says Rod Ogden of R-P.

But the move will see no merging of sales forces or brand identity, both companies stress.

Another "first" for Ciba is the arrival of a plant growth regulator. Trinexapac-ethyl offers a new mode of action for lodging control, allowing greater flexibility with timing, explains Chris Rowsell. It is also less temperature dependent, allowing first spray timings to be matched to the needs of the fungicide component. Unlike ethephon-generating regulators, Cibas product inhibits gibberellin production, making it safer to use in barley and light land crops, adds Cibas Jonathan Brown. It is sold in France as Moddus and should go on sale here next spring.

Among the three new fungicides under development, A8779A commands most interest, offering a non-triazole approach to systemic disease control in cereals. The new mode of action also cuts the risk of resistance developing, comments product manager Richard Leech.

He sees two main uses. "As a first spray for wheat it will control W and R strains of eyespot and early mildew giving much better control than any existing products. It really is exceptional." Yellow rust and Septoria nodorum are also controlled, although Septoria tritici would need triazole adding, he admits.

The second use is as a broad-spectrum barley material, controlling rhynchosporium, net blotch and mildew. To cover rusts, too, a triazole would need adding. Availability is expected for 1997.

Coded product A8816A should be available next year. A formulated mix of fenpropidin and fenpropimorph, it offers strong mildew control plus some control of rhynchosporium and net blotch in barley and septoria in wheat, says Mr Leech.

For broad-spectrum fungicide activity at early-flag leaf emergence, A9233B combines full-rate propiconazole, half-rate tebuconazole and fenpropidin to control a wide range of diseases. &#42

Chris Roswell shows the effects of Cibas new cereal growth regulator.