7 April 2000

Septoria makes mark

DESPITE its good resistance rating September-drilled winter wheat Claire is disappointingly dirty with septoria, notes Mr Hanson.

"It looks no cleaner than the Consort and we have had to use 0.5 litres of Bravo at GS30 to keep the lid on the disease."

If, as possible, a specific mildewicide has to be added at the main T1 fungicide timing, the value of the varietys supposed disease resistance will be questionable, he says.

Strobilurin Landmark (epoxiconazole + kresoxim-methyl) will again figure in the farms fungicide programme, albeit it in only two hits instead of last years three.

Conscious of FRAC guidelines, Mr Hanson has decided not to repeat last years three-strob approach, which proved successful on feed wheats. "My main worry is that in doing so we could be sacrificing yield in the long cool summers we get up here. The key thing is that we shall keep the rates up."

ARC-driven plans in the wheats, which are about two weeks ahead of normal, are for 0.3-0.4 litres/ha of Landmark at GS32 (second node), increasing to 0.5 on early drillings, followed by 0.7 at GS37/39 (flag leaf).

Two fields of Claire identified by a Novartis DNA diagnostic test as being at risk from eyespot will shortly receive Unix (cyprodinil). But the key input is a full 2.3 litres/ha of 3C Cycocel (chlormequat), says Mr Hanson.

Applied with pH adjusting BB5 adjuvant for maximum effect, it is a vital component in the farms anti-lodging strategy. "Keeping crops standing is imperative up here." &#42