East: If you haven’t seen septoria recently—- you will now!
Withthe previous three years dry septoria has not been the issue in this areacertainly, but that has now changed with quite a vengeance.Yellow rust was tothe fore in the autumn and early spring and well timed early sprays did a verygood job in controlling this in the susceptible varieties.
Earlysprays ie T0 sprays have shown to be more than effective this year than formany years as missed strips are showing high levels of disease and despiterobust follow up treatments the crops are suffering from this missed earlyapplication.
Septoriais certainly prevalent in a lot of crops and the new SDHI chemistry is beingtested to the limits with rates in general being kept higher than normal.
With crops now beginning to split boot orange blossom midges will need to be monitored in susceptible varieties and going out in warm still evenings as the ear emerges is one way of seeing if any are present. Traps can be put in the field to give an idea as to the amounts around.
Oilseed rape has flowered far longer than I ever known but have now mainly dropped the flowers with the advent of the hot dry weather and late foliar Nitrogen applications will be soon be being applied.
Sugar beet are faring far better than they were a few weeks ago with warmer nights accelerating growth and some beet are now at the 8-10 leaf stage. The long delays in some crops between the pre em and first post em sprays were of some concern but pre em sprays this year have proved as valuable as T0 sprays in wheat.After the wet weather came extremely good weed control with crops now in general very clean.
The number of leaf miners eggs found last week was a little startling and decisions whether to spray sooner rather than later are having to be made.Warnings about a possible increase in myzus numbers mean careful monitoring of crops as aphid control from seed treatments is now likely to be over and backward crops may still be vulnerable to a virus yellow attack.
