FFA Judging Contest Plant Pathology Study Guide

1
FFA Judging ContestPlant Pathology Study Guide

• Revised 8-07

2

• The following PowerPoint presentation was
  assembled by Tom McCutcheon and Mike Shamblin.
  The information was assembled from various
  sources publicly available on the Internet. The
  information was gathered over a period of time
  and from sources too numerous to list
  individually. The author would like to
  acknowledge the assistance of these web sites and
  publicly express his sincere appreciation for the
  assistance.
• The presentation was assembled solely for
  educational purposes. The author did not or will
  never receive financial reward for the
  preparation of the presentation.
• The presentation may be copied and distributed in
  parts or in its entirety for educational
  purposes. If any part of this presentation is
  distributed, the efforts of Mr. McCutcheon and
  Mr. Shamblin in assembling the materials must be
  recognized. The distributor may not receive any
  financial compensation for this service.
• Tom McCutcheon Mike Shamblin
  Extension Agent Extension Agent
  Tom.McCutcheon_at_mail.wvu.edu
  Mike.Shamblin_at_mail.wvu.edu
• WVU Monongalia Co. Ext. Office WVU Clay Co. Ext.
  Office
• 26 Commerce Drive, WesMon Plaza New Courthouse -
  Main Street Morgantown, WV 26501 P.O.
  Box 119
• [phone] Clay, WV 25043-0119
• FAX [phone] [phone]
• FAX [phone]

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Instructions

• The next time you left-click the mouse a new
  window will appear with a picture of a pest. Try
  to identify it. Once you have decided on what it
  is or have given up, left-click again and the
  common name will appear. The next slide will then
  ask questions about the disease and left-clicking
  will reveal the answers.

4
Corn - Smut
5
Corn - Smut
Control

• Cut and destroy diseased parts.
• Crop Rotation.

6
Bean - Anthracnose
7
Bean - Anthracnose
Control

• Spray with Bravo
• Mancozeb
• Remove infected plants.

8
Cucumber - Bacterial Wilt
9
Cucumber - Bacterial Wilt
Control

• Provado dust
• Ambush
• Asana
• Pounce
• Rotenone for cucumber beetles.

10
Tomato - Anthracnose
11
Tomato - Anthracnose
Control

• Use 3 year rotation.
• Use clean seed.
• Mancozeb.
• Copper.
• Bravo Fungicides.

12
Wheat - Scab
13
Wheat - Scab
Control

• If following corn, cover residue completely
• Treat seed with a suitable chemical.

14
Tomato Root Knot Nematode
15
Tomato Root Knot Nematode
Control

• Buy nematode-free plants.
• Fumigate soil.

16
Rye - Ergot
17
Rye - Ergot
Control

• Use disease free seed.
• Cut wild grass hosts.

18
Strawberry Botrytis Rot
19
Strawberry Botrytis Rot
Control

• Renovate
• Thin old beds
• Captan
• Topsin-M
• Ronilan

20
Corn - Rust
21
Corn - Rust
Control

• No practical control

22
Potato Late Blight
23
Potato Late Blight
Control

• Spray with Mancozeb.
• Copper.
• Bravo fungicides.

24
Wheat - Powdery Mildew
25
Wheat - Powdery Mildew
Control

• Resistant Varieties

26
CornMaize Dwarf Mosaic Virus
27
CornMaize Dwarf Mosaic Virus
Control

• Use Resistant Varieties

28
Tomato Blossom End Rot
29
Tomato Blossom End Rot
Control

• Mulch to keep an even water supply
• Keep calcium high.

30
Tomato Early Blight
31
Tomato Early Blight
Control

• Spray with Mancozeb
• Copper
• Bravo fungicides

32
Tomato Septoria Leaf Spot
33
Tomato Septoria Leaf Spot
Control

• Use 3 year rotation.
• Mancozeb.
• Copper.
• Bravo fungicides.

34
Wheat Glume Blotch
35
Wheat Glume Blotch
Control

• Treat seed with suitable chemical

36
Tomato Late Blight
37
Tomato Late Blight
Control

• Spray with Mancozeb
• Copper
• Terranil
• Bravo fungicides

38
Strawberry Leaf Blight
39
Strawberry Leaf Blight
Control

• Spray with Captan

40
Apple - Scab
41
Apple - Scab
Control

• Spay with Captan
• Rubigan Captan
• Rubigan Ziram

42
Bean Bacterial Blight
43
Bean Bacterial Blight
Control

• Use disease free seed
• Crop rotation

44
Apple Sooty Blotch
45
Apple Sooty Blotch
Control

• Spray with Captan
• Remove dead branches

46
Peach Leaf Curl
47
Peach Leaf Curl
Control

• Lime-sulfer in winter time
• Ferbam
• Sulfer Wettable
• Bravo fungicide

48
Brambles Crown Gall
49
Brambles Crown Gall
Control

• Avoid infested soil
• Remove infected plants
• Disease free plants

50
Apple Bitter Rot
51
Apple Bitter Rot
Control

• Spray with Captan
• Remove dead branches

52
Cherry Brown Rot
53
Cherry Brown Rot
Control

• Spray withCaptan Topsin-M mixed.

54
Peaches Brown Rot
55
Peaches Brown Rot
Control

• Wettable sulfer
• Benlate plus Captan
• Benlat plus Sulfer

56
Barley - Scald
57
Barley - Scald
Control

• Use resistant varieties

58
Apple Cedar Rust
59
Apple Cedar Rust
Control

• Remove alternate host
• Rubigan Captan
• Rubigan Ziram

60
Strawberry Leaf Spot
61
Strawberry Leaf Spot
Control

• Spray with Captan
• Topsin-M

62
Apple Frog-eye Leaf Spot
63
Apple Frog-eye Leaf Spot
Control

• Spray with Captan
• Nova mancozeb
• Remove diseased parts

64
Barley Covered Smut
65
Barley Covered Smut
Control

• Treat seed with suitable chemical

66
Apple Fire Blight
67
Apple Fire Blight
Control

• Remove diseased parts
• Streptomycin
• Bordeaux
• Fixed copper

68
Potato Hopperburn
69
Potato - Hopperburn
Control

• Spray with Methoxychlor

70
Barley Stripe Rust
71
Barley Stripe Rust
Control

• Treat seed with suitable chemical

72
Corn Northern Leaf Blight
73
Corn Northern Leaf Blight
Control

• Use resistant varieties

74
Plum Brown Rot
75
Plum Brown Rot
Control

• Spray with Captan Topsin-M mixed.

76
Potato Black Leg
77
Potato Black Leg
Control

• Treat seed with Captan
• Polyram
• Disease free seed

78
Barley Powdery Mildew
79
Barley Powdery Mildew
Control

• Use resistant varieties

80
Wheat Loose Smut
81
Wheat Loose Smut
Control

• Hot water seed treatment
• Water soak treatment
• Treat seed with a suitable chemical

82
Grapes Powdery Mildew
83
Grapes Powdery Mildew
Control

• Bordeaux
• Fixed copper
• Bayleton

84
Peach - Scab
85
Peach - Scab
Control

• Spray with wettable sulfur Benlate

86
Potato Leaf Roll
87
Potato Leaf Roll
Control

• Use disease free seed

88
Barley Loose Smut
89
Barley Loose Smut
Control

• Treat seed with suitable chemical
• Hot water long water soak treatment.

90
Potato - Scab
91
Potato - Scab
Control

• Acidify soil
• Use resistant varieties

92
Wheat Stem Rust
93
Wheat Stem Rust
Control

• Use resistant varieties
• Destroy alternate host

94
Wheat Leaf Rust
95
Wheat Leaf Rust
Control

• Use resistant varieties

96
Potato Ring Rot
97
Potato Ring Rot
Control

• Use disease free seed

98
Alfalfa - Leaf Spots
99
Alfalfa - Leaf Spots
Control

• Cut foliage in a timely manner

100
Grapes - Black Rot
101
Grapes - Black Rot
Control

• Ferbam
• Captan
• Bayleton

102
Potato - Rhizoctonia
103
Potato - Rhizoctonia
Control

• No practical control
• Cultural practice- plant shallow and hill deep.

104
Brambles - Anthracnose
105
Brambles - Anthracnose
Control

• Spray with lime-sulfur in spring when leaves show
  1/2 inch growth follow with Captan at bloom and
  two weeks after bloom.

106
Oats - Stem Rust
107
Oats - Stem Rust
Control

• Use resistant varieties
• Destroy alternate host

108
Crucifers - Club Root
109
Crucifers - Club Root
Control

• Avoid infested soil
• Apply lime to soil

110
Plum - Brown Rot
111
Plum - Brown Rot
Control

• Spray with Captan and Topsin-M mixed.

112
Potato Early Blight
113
Potato Early Blight
Control

• Spray with Mancozeb
• Copper
• Bravo fungicides

114
Alfalfa - Downy Mildew
115
Alfalfa - Downy Mildew
Control

• Cut foliage in a timely manner

116
Bramble - Orange Rust
117
Bramble - Orange Rust
Control

• Remove infested plants, including roots

118
Crucifers - Soft Rot
119
Crucifers - Soft Rot
Control

• Prevent mechanical and insect injuries to plants

120
Clover - Sclerotinia Crown Rot
121
Clover - Sclerotinia Crown Rot
Control

• No practical control

122
Crucifers - Black Leg
123
Crucifers - Black Leg
Control

• Use clean seeds
• Hot water treatment
• Rovral

124
Grapes - Downy Mildew
125
Grapes - Downy Mildew
Control

• Bordeaux
• Fixed copper

126
Plum - Black Knot
127
Plum - Black Knot
Control

• Cut and destroy diseased parts
• Spray with Captan

128
Clover - Rust
129
Clover - Rust
Control

• No practical control

130
Potato - Mosaic Virus
131
Potato - Mosaic Virus
Control

• Use disease free seed

132
Clover - Powdery Mildew
133
Clover - Powdery Mildew
Control

• Use resistant varieties

134
Cucurbits - Powdery Mildew
135
Cucurbits - Powdery Mildew
Control

• Spray with Bravo

136
Beans - Mosaic Virus
137
Beans - Mosaic Virus
Control

• No chemical control.
• Control weeds
• Use disease free seed

138
Cherry - Leaf Spot
139
Cherry - Leaf Spot
Control

• Spray with Captan and Topsin-M mixed

140
Bean - Rust
141
Bean - Rust
Control

• Sulfur dust
• Bravo fungicides
• Resistant varieties.

142
Oats - Crown Rust
143
Oats - Crown Rust
Control

• Use resistant varieties

144
Oats - Loose Smut
145
Oats - Loose Smut
Control

• Treat seed with suitable chemical

146
Tomato - Wilt Diseases
147
Tomato - Wilt Diseases
Control

• Use resistant varieties

148
Cucurbits - Anthracnose
149
Cucurbits - Anthracnose
Control

• Mancozeb
• Bravo fungicides
• Topsin-M

150
Cucurbits - Downy Mildew
151
Cucurbits - Downy Mildew
Control

• Bravo fungicides
• Mancozeb
• Quadris

152
Corn - Southern Leaf Blight
153
Corn - Southern Leaf Blight
Control

• Use resistant varieties

154
Peach - Yellows
155
Peach - Yellows
Control

• Pull and destroy disease trees

156
Corn - Grey Leaf Spot
157
Corn - Grey Leaf Spot
Control

• Use resistant varieties