Beet root diseases A lecture on ToT training of FFS By Mr Allah Dad Khan Provincial Coordinator IPM KPK MINFAL Islamabad

2. Beet root Diseases
A
Lecture To ToT trainees (
FFS)
By
Mr. Allah Dad Khan
Provincial Coordinator IPM
KPK
MINFAL Pakistan

5. Cercospora leaf spot
Cercospora beticola
Symptoms
 Brown to gray flecks or
spots surrounded by red-
purple halos on leaves;
yellow or brown necrotic
leaves
 Cause
 Fungus

6. Cercospora leaf spot
Cercospora beticola

7. Cercospora leaf spot
Cercospora beticola

8. Downy mildew
Peronospora farinosa
Symptoms
 Plant leaves appear lighter
green; small, puckered,
thickened leaves; fuzzy gray
growth on both leaf surfaces
 Cause
 Fungus
 Comments
 Fungus survives in crop
residues over winter to infect
new crop.
 Management
 Plant resistant varieties

9. Damping off
Rhizoctonia solani
Phoma betae
Pythium ultimum
Aphanomyces cochlioides
Symptoms
 Seedlings collapsing; blackened
roots; constriction of plant
crown
 Cause
 Fungi
 Comments
 Warm, wet weather favors
disease emergence; beet very
susceptible
 Management
 Treat seeds with fungicide prior
to planting; plant in well draining
soil; do not plant until soil is
sufficiently warm

10. Scab
Streptomyces scabies
Symptoms
 Small round spots on roots that
enlarge, turn brown and rupture the
epidermis; raised corky spots on
root surface that are gray, white or
tan in color
 Cause
 Bacterium
 Comments
 Bacteria survive in soil; disease
emergence favors dry conditions
 Management
 Do not plant in soil know to be
infected; avoid crop rotation with
potato

11. Root knot nematode
Meloidogyne spp.
Symptoms
 Galls on roots which can be
up to 3.3 cm (1 in) in diameter
but are usually smaller;
reduction in plant vigor;
yellowing plants which wilt in
hot weather
 Cause
 Nematode
 Comments
 Galls can appear as quickly as
a month prior to planting;
nematodes prefer sandy soils
and damage in areas of field
or garden with this type of soil
is most likely