1. FFA Judging Contest Plant 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
WVU Monongalia Co. Ext. Office WVU Clay Co. Ext. Office
26 Commerce Drive, WesMon Plaza New Courthouse - Main Street Morgantown, WV P.O. Box 119
(304) Clay, WV
FAX (304) (304)
FAX (304)

3. 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. Corn–Maize Dwarf Mosaic Virus

27. Corn–Maize 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