Table1. Frequency of epidemic development of the most problematic diseases in different regions  (number out of 10 years, 1994-2003).

 

Disease

Regions

North Caucasus

Central chernozem

Central

Povolgski

Volgo-Viatski

Uralski

Leaf wheat rust

(Puccinia triticina)

3-4

2-3

3-4

5-6

3-4

3-4

Leaf rye rust

(Puccinia disperse)

-

3-4

4-5

4-5

5-6

3-4

Crown oat rust

(Puccinia coronifera)

1-2

2-3

2-3

3-4

4-5

2-3

Dwart rust of barley

(Puccinia hordei)

2-3

0-1

1-2

0-1

1-2

0-1

Wheat stripe rust

(Puccinia striiformis tritici)

2-3

-

-

-

-

-

Stem rye rust

(Puccinia graminis secalis)

-

-

2-3

1-2

3-4

1-2