22 August 2001
New AI gives Stomp a boost

By Tom Allen-Stevens

An autumn herbicide, launched on Wednesday (22 August), contains a new active ingredient that is claimed to give the mix a “synergistic” effect.

PicoPro, which contains pendimethalin (Stomp) and the new active picolinafen, works better than the two ingredients on their own, says BASF.

It also offers growers a wider window than Stomp to tackle weeds such as cleavers, annual meadow grass, chickweed and poppies, with a more visible kill.

“PicoPro is an extremely effective mixing partner for broad-spectrum weed control,” said BASFs European crop manager for cereal herbicides Adam Burnhams.

A contact herbicide, picolinafen has action on a range of broad-leaved weeds up to six true leaves, which complements pendimethalins residual activity, he said.

The new mixture has been designed to compete directly with diflufenican/ isoproturon mixes, such as Panther, and will be priced accordingly.

At the maximum 3.0l/ha rate it is claimed to be consistently better performing with its main strengths being cleavers and annual meadow grass.

Another advantage of PicoPro is that it has a low toxicity to mammals, fish and insects and has no LERAP requirement.

“It is not persistent, has no rotational restriction, no leaching, and a low active ingredient rate,” added Mr Burnhams.

It contains 16g/l picolinafen and 320g/l pendimethalin, has been granted approval by Pesticide Safety Directorate and will be available to growers this autumn.

Picolinafen is the first of a “new family” of active ingredients and was inherited by BASF when it bought Cyanamid last year.

Available only in a mixture, there are no known tankmix restrictions, but the company advises against adding organo-silicone wetters.