DISEASE IDENTIFICATION Practical Exam

1
DISEASE IDENTIFICATIONPractical Exam
ASIAN SOYBEAN RUST UPDATE DISEASE SYMPTOMOLOGY
WORKSHOP

• Cliff Coker, Rick Cartwright Terry Kirkpatrick
• Extension Plant Pathologist

2
Soybean Disease Practical

• Question 1 (next slide shown)
• Identify the diseases shown in the following
  slides by common name
• The damage/symptoms shown may or may not be
  caused by a disease
• The correct answer will be shown after the
  symptoms are shown for 20 seconds
• GOOD LUCK!!!!

3
(No Transcript)
4
Soybean Disease Practical

• The correct answer to Question 1
• ASIAN SOYBEAN RUST

5
Soybean Disease Practical

• Question 2 (next slide shown)
• Identify the diseases shown in the following
  slides by common name
• The damage/symptoms shown may or may not be
  caused by a disease
• The correct answer will be shown after the
  symptoms are shown for 20 seconds
• GOOD LUCK!!!!

6
(No Transcript)
7
Soybean Disease Practical

• The correct answer to Question 2
• POD AND STEM BLIGHT

8
Soybean Disease Practical

• Question 3 (next slide shown)
• Identify the diseases shown in the following
  slides by common name
• The damage/symptoms shown may or may not be
  caused by a disease
• The correct answer will be shown after the
  symptoms are shown for 20 seconds
• GOOD LUCK!!!!

9
(No Transcript)
10
Soybean Disease Practical

• The correct answer to Question 3
• AERIAL BLIGHT

11
Soybean Disease Practical

• Question 4 (next slide shown)
• Identify the diseases shown in the following
  slides by common name
• The damage/symptoms shown may or may not be
  caused by a disease
• The correct answer will be shown after the
  symptoms are shown for 20 seconds
• GOOD LUCK!!!!

12
(No Transcript)
13
Soybean Disease Practical

• The correct answer to Question 4
• CERCOSPORA LEAF BLIGHT

14
Soybean Disease Practical

• Question 5 (next slide shown)
• Identify the diseases shown in the following
  slides by common name
• The damage/symptoms shown may or may not be
  caused by a disease
• The correct answer will be shown after the
  symptoms are shown for 20 seconds
• GOOD LUCK!!!!

15
(No Transcript)
16
Soybean Disease Practical

• The correct answer to Question 5
• STINK BUG DAMAGE, also called Greenbean
  Syndrome
• this is not caused by a disease

17
Soybean Disease Practical

• Question 6 (next slide shown)
• Identify the diseases shown in the following
  slides by common name
• The damage/symptoms shown may or may not be
  caused by a disease
• The correct answer will be shown after the
  symptoms are shown for 20 seconds
• GOOD LUCK!!!!

18
(No Transcript)
19
Soybean Disease Practical

• The correct answer to Question 6
• CHARCOAL ROT

20
Soybean Disease Practical

• Question 7 (next slide shown)
• Identify the diseases shown in the following
  slides by common name
• The damage/symptoms shown may or may not be
  caused by a disease
• The correct answer will be shown after the
  symptoms are shown for 20 seconds
• GOOD LUCK!!!!

21
(No Transcript)
22
Soybean Disease Practical

• The correct answer to Question 7
• SOYBEAN CYST NEMATODE (SCN)

23
Soybean Disease Practical

• Question 8 (next slide shown)
• Identify the diseases shown in the following
  slides by common name
• The damage/symptoms shown may or may not be
  caused by a disease
• The correct answer will be shown after the
  symptoms are shown for 20 seconds
• GOOD LUCK!!!!

24
(No Transcript)
25
Soybean Disease Practical

• The correct answer to Question 8
• TARGET SPOT

26
Soybean Disease Practical

• Question 9 (next slide shown)
• Identify the diseases shown in the following
  slides by common name
• The damage/symptoms shown may or may not be
  caused by a disease
• The correct answer will be shown after the
  symptoms are shown for 20 seconds
• GOOD LUCK!!!!

27
(No Transcript)
28
Soybean Disease Practical

• The correct answer to Question 9
• FROGEYE LEAF SPOT

29
Soybean Disease Practical

• Question 10 (next slide shown)
• Identify the diseases shown in the following
  slides by common name
• The damage/symptoms shown may or may not be
  caused by a disease
• The correct answer will be shown after the
  symptoms are shown for 20 seconds
• GOOD LUCK!!!!

30
(No Transcript)
31
Soybean Disease Practical

• The correct answer to Question 10
• BROWN LEAF SPOT

32
Soybean Disease Practical

• Question 11 (next slide shown)
• Identify the diseases shown in the following
  slides by common name
• The damage/symptoms shown may or may not be
  caused by a disease
• The correct answer will be shown after the
  symptoms are shown for 20 seconds
• GOOD LUCK!!!!

33
(No Transcript)
34
Soybean Disease Practical

• The correct answer to Question 11
• ASIAN SOYBEAN RUST, again

35
Soybean Disease Practical

• Question 12 (next slide shown)
• Identify the diseases shown in the following
  slides by common name
• The damage/symptoms shown may or may not be
  caused by a disease
• The correct answer will be shown after the
  symptoms are shown for 20 seconds
• GOOD LUCK!!!!

36
(No Transcript)
37
Soybean Disease Practical

• The correct answer to Question 12
• DOWNY MILDEW

38
Soybean Disease Practical

• Question 13 (next slide shown)
• Identify the diseases shown in the following
  slides by common name
• The damage/symptoms shown may or may not be
  caused by a disease
• The correct answer will be shown after the
  symptoms are shown for 20 seconds
• GOOD LUCK!!!!

39
(No Transcript)
40
Soybean Disease Practical

• The correct answer to Question 13
• BACTERIAL PUSTULE

41
Soybean Disease Practical

• Question 14 (next slide shown)
• Identify the diseases shown in the following
  slides by common name
• The damage/symptoms shown may or may not be
  caused by a disease
• The correct answer will be shown after the
  symptoms are shown for 20 seconds
• GOOD LUCK!!!!

42
(No Transcript)
43
Soybean Disease Practical

• The correct answer to Question 14
• ASIAN SOYBEAN RUST

44
Soybean Disease Practical

• Question 15 (next slide shown)
• Identify the diseases shown in the following
  slides by common name
• The damage/symptoms shown may or may not be
  caused by a disease
• The correct answer will be shown after the
  symptoms are shown for 20 seconds
• GOOD LUCK!!!!

45
(No Transcript)
46
Soybean Disease Practical

• The correct answer to Question 15
• AERIAL BLIGHT

47
Soybean Disease Practical

• Question 16 (next slide shown)
• Identify the diseases shown in the following
  slides by common name
• The damage/symptoms shown may or may not be
  caused by a disease
• The correct answer will be shown after the
  symptoms are shown for 20 seconds
• GOOD LUCK!!!!

48
(No Transcript)
49
Soybean Disease Practical

• The correct answer to Question 16
• FROGEYE LEAF SPOT, again

50
Soybean Disease Practical

• Question 17 (next slide shown)
• Identify the diseases shown in the following
  slides by common name
• The damage/symptoms shown may or may not be
  caused by a disease
• The correct answer will be shown after the
  symptoms are shown for 20 seconds
• GOOD LUCK!!!!

51
(No Transcript)
52
Soybean Disease Practical

• The correct answer to Question 17
• SUDDEN DEATH SYNDROME (SDS)

53
Soybean Disease Practical

• Question 18 (next slide shown)
• Identify the diseases shown in the following
  slides by common name
• The damage/symptoms shown may or may not be
  caused by a disease
• The correct answer will be shown after the
  symptoms are shown for 20 seconds
• GOOD LUCK!!!!

54
(No Transcript)
55
Soybean Disease Practical

• The correct answer to Question 18
• STEM CANKER

56
Soybean Disease Practical

• Question 19 (next slide shown)
• Identify the diseases shown in the following
  slides by common name
• The damage/symptoms shown may or may not be
  caused by a disease
• The correct answer will be shown after the
  symptoms are shown for 20 seconds
• GOOD LUCK!!!!

57
(No Transcript)
58
Soybean Disease Practical

• The correct answer to Question 19
• ANTHRACNOSE

59
Soybean Disease Practical

• Question 20 (next slide shown)
• Identify the diseases shown in the following
  slides by common name
• The damage/symptoms shown may or may not be
  caused by a disease
• The correct answer will be shown after the
  symptoms are shown for 20 seconds
• GOOD LUCK!!!!

60
(No Transcript)
61
Soybean Disease Practical

• The correct answer to Question 20
• ROOT KNOT NEMATODE

62
THE END
63
Soybean Disease Practical

• END OF SOYBEAN TEST
• EXCELLENT 15-20 CORRECT
• VERY GOOD 19-15 CORRECT
• AVERAGE 14-10 CORRECT
• BELOW AVERAGE 9-5 CORRECT
• LESS THAN 5 SCOUT RICE

64
(No Transcript)
65
(No Transcript)
66
Leaf Curling and defoliation caused by rust
67
Rust Pustules Shelby Co. TN 2004
68
(No Transcript)
69
(No Transcript)
70
Moderate rust infection Good control possible
71
Advanced soybean rust Numerous pustules on lower
Leaf surface. Limited control.
72
(No Transcript)
73
Rust pustules through a hand lens
74
(No Transcript)
75
Kudzu with rust
76
Bacterial Pustule
77
Rust on upper side
Rust on under side
78
Soybean Rust Pustules
79
Pustules (20X)
80
(No Transcript)
81
Notice volcano-like pustules at arrows. Photo
taken by Jason Brock 10 Nov. Dissecting
microscope 50-60X.
Pustules
82
(No Transcript)
83
(No Transcript)
84
(No Transcript)
85
Rust pustules under microscope
86
Notice spores and two pustules. Dissecting
microscope 50X. Taken by Layla Sconyers 10 Nov
with a hand-held digital camera.
Spores
Pustules
87
Spores erupting from pustules (50X)
Ugalde Balardin, 2004
88
(No Transcript)
89
Common Foliar Diseases
early

• Bacterial blight

• Frogeye leaf spot

Bacterial pustule
early

• Downy mildew

• Brown spot

90
LOOK-ALIKE DISEASES You need to know the
difference!

• CERCOSPORA LEAF BLIGHT
• FROGEYE LEAF SPOT
• DOWNY MILDEW
• BROWN (LEAF) SPOT
• BACTERIAL PUSTULE
• BACTERIAL BLIGHT

91
bb
Rust pustules
Frogeye leaf spot
92
(No Transcript)
93
(No Transcript)
94
(No Transcript)
95
Downy Mildew
96
(No Transcript)
97
(No Transcript)
98
(No Transcript)
99
(No Transcript)
100
(No Transcript)
101
(No Transcript)
102
(No Transcript)
103
(No Transcript)
104
(No Transcript)
105
(No Transcript)
106
(No Transcript)
107
(No Transcript)
108
(No Transcript)
109
(No Transcript)
110
(No Transcript)
111
(No Transcript)
112
(No Transcript)
113
(No Transcript)
114
(No Transcript)
115
(No Transcript)
116
(No Transcript)
117
(No Transcript)
118
(No Transcript)
119
(No Transcript)
120
(No Transcript)
121
(No Transcript)
122
(No Transcript)
123
(No Transcript)
124
(No Transcript)
125
(No Transcript)
126
(No Transcript)
127
(No Transcript)
128
(No Transcript)
129
(No Transcript)
130
Soybean Reproductive Growth Stages
131
R-1 (Beginning Bloom) One open flower at any
node on the main stem
132
R-2 (Full Bloom) Open flower at one of the two
uppermost nodes on the main stem with a fully
developed leaf
133
R-3 (Beginning Pod) Pod 3/16 inch long at one of
the four uppermost nodes on the main stem with a
fully developed leaf
134
R-4 (Full Pod) Pod 3/4 inch long at one of the
four uppermost nodes on the main stem with a
fully developed leaf
135
R-5 (Beginning Seed) Seed 1/8 inch long in a
pod at one of the four uppermost nodes in the
main stem with a fully developed leaf
136
R-6 (Full Seed) Pod containing a green seed that
fills the pod cavity at one of the four uppermost
nodes on the main stem with a fully developed leaf
137
R-7 (Beginning Maturity) One normal pod on the
main stem that has reached its mature pod color
138
R-8 (Full Maturity) 95 percent of the pods have
reached their mature pod color 5-10 days of
drying weather are required after R8 before the
soybeans have less than 15 percent moisture
139
(No Transcript)