Common Root Rot by tyndale

VIEWS: 82 PAGES: 2

									Common Root Rot




                                                                       Barley Disease Handbook, Neate, S. and McMullen, M., North Dakota State University, 2005
(Cochliobolus sativus)
SYMPTOMS
Dark brown spots on the
subcrown internode or on
stems below the soil line.
Crown rot develops later in
the season. Affected plants
may turn prematurely white.                                           40
Kernels in the head are
shriveled and roots are honey
to dark brown and rotted.

HOSTS
Barley, wheat and durum.
No variety is completely
resistant; most are moderately   Subcrown internode and
susceptible to moderately        seminal root infection Stem-base
resistant.                                                infection
                                                                                                     Barley Disease Handbook, Neate, S. and McMullen, M., North Dakota State University, 2005
Common root rot infection on subcrown internode: Healthy (left) through to severe (right)
                                                                                                    41

CONTROL
• Promote rapid emergence by planting in well prepared, warm seed bed
• Avoid herbicide stress
• Rotate with crops such as oats, or broadleaf crops
• Use fungicide seed treatment                                                               ROOT
                                                                                              AND
Common Root Rot                                                                             CROWN

								
To top