Crop Clinic

Yellow rust can spread between wheat varieties that are susceptible to the same race of yellow rust. The risk of severe and widespread infection can be reduced by growing varieties with good resistance to yellow rust and by diversifying varieties grown on farm. This is achieved by using the ediversification scheme outlined below.

Winter Wheat Yellow Rust

Yellow rust can spread between wheat varieties that are susceptible to the same race of the pathogen.

The risk of severe and widespread infection may be reduced by:

Growing varieties with good resistance to yellow rust (as indicated by high resistance ratings on the HGCA Recommended List)

Diversifying the varieties grown on a farm so that they are not all susceptible to the same race of yellow rust. This is achieved by using the Variety Diversification Scheme.

Choosing varieties to grow together

1. Select a first-choice variety and find its Diversification Group (DG).
2. Go to the selection matrix and find this DG under 'Chosen DG' on the left hand side of the table.
3. Read across the table to find the risk of yellow rust spread for each companion DG.
   
   L = low risk
   H = high risk
   VH = very high risk
   
   Wherever possible choose combinations of varieties marked 'L'.
   
   If there is a choice of varieties in a companion DG, give preference to those with higher resistance ratings (see 1-9 ratings in HGCA Recommended List)

DG1	DG2a	DG3
Alchemy	Battalion	Cordiale
Beluga	Conqueror	Grafton
Cassisus	Duxford	Kingdom**
Claire	Einstein	KWS-Horizon**
Edmunds	Hereward
Gladiator	Humber
Istabraq	Marksman
KWS-Sterlling	Qplus
Panorama
Scout	DG2b	DG0
Warrior	Gallant	Glasgow
Xi19	Ketchum
Zebedee	Oakley
	Robigus	Unclassified
	Solstice	Invicta
	Viscount	JB-Diego

 

		Companion DG
Chosen DG	1	2a	2b	3	0
1	L	L	L	L	L
2a	L	H	H	L	H
2b	L	H	VH	L	H
3	L	L	L	H	H
0	L	H	H	H	H