Winter Wheat Update – early July 2020

Pests

Check the ears of wheat up to GS73 for aphids. If two-thirds of heads are infested then consider an aphicide. Bear in mind that grain aphids may well be resistant to pyrethroid aphicides, so consider using a flonicamid.  Seek specific pesticide guidance from your local agricultural advisor or agronomist.

Data from SRUC’s monitored crops for early July are shown in the table below. This data is generated in commercial crops in your area so is indicative of the disease pressure and growth stages on farms at the moment.

Winter Wheat	Average	Maximum	Minimum
Crop Growth Stage	77	85	69
Mildew	2.5	6	0
Septoria tritici	1.2	4	0