This document provides information on plant diseases that affect various crops and recommendations for controlling each disease. For each disease listed, the recommendations typically include using resistant varieties when available, applying appropriate fungicides or other chemicals, practicing crop rotation, and removing diseased plants or plant parts. Control is listed as the recommended action for most diseases.

1. FFA Judging Contest Plant Pathology Study Guide

2. Corn - Smut

3. Corn - Smut Cut and destroy diseased parts. Crop Rotation. Control

4. Bean - Anthracnose

5. Bean - Anthracnose Spray with Bravo Mancozeb Remove infected plants. Control

6. Cucumber - Bacterial Wilt

7. Cucumber - Bacterial Wilt Provado dust Ambush Asana Pounce Rotenone for cucumber beetles. Control

8. Tomato - Anthracnose

9. Tomato - Anthracnose Use 3 year rotation. Use clean seed. Mancozeb. Copper. Bravo Fungicides. Control

10. Wheat - Scab

11. Wheat - Scab If following corn, cover residue completely Treat seed with a suitable chemical. Control

12. Tomato – Root Knot Nematode

13. Tomato – Root Knot Nematode Buy nematode-free plants. Fumigate soil. Control

14. Rye - Ergot

15. Rye - Ergot Use disease free seed. Cut wild grass hosts. Control

16. Strawberry – Botrytis Rot

17. Strawberry – Botrytis Rot Renovate Thin old beds Captan Topsin-M Ronilan Control

18. Corn - Rust

19. Corn - Rust No practical control Control

20. Potato – Late Blight

21. Potato – Late Blight Spray with Mancozeb. Copper. Bravo fungicides. Control

22. Wheat - Powdery Mildew

23. Wheat - Powdery Mildew Resistant Varieties Control

24. Corn–Maize Dwarf Mosaic Virus

25. Corn–Maize Dwarf Mosaic Virus Use Resistant Varieties Control

26. Tomato – Blossom End Rot

27. Tomato – Blossom End Rot Mulch to keep an even water supply Keep calcium high. Control

28. Tomato – Early Blight

29. Tomato – Early Blight Spray with Mancozeb Copper Bravo fungicides Control

30. Tomato – Septoria Leaf Spot

31. Tomato – Septoria Leaf Spot Use 3 year rotation. Mancozeb. Copper. Bravo fungicides. Control

32. Wheat – Glume Blotch

33. Wheat – Glume Blotch Treat seed with suitable chemical Control

34. Tomato – Late Blight

35. Tomato – Late Blight Spray with Mancozeb Copper Terranil Bravo fungicides Control

36. Strawberry – Leaf Blight

37. Strawberry – Leaf Blight Spray with Captan Control

38. Apple - Scab

39. Apple - Scab Spay with Captan Rubigan + Captan Rubigan + Ziram Control

40. Bean – Bacterial Blight

41. Bean – Bacterial Blight Use disease free seed Crop rotation Control

42. Apple – Sooty Blotch

43. Apple – Sooty Blotch Spray with Captan Remove dead branches Control

44. Peach – Leaf Curl

45. Peach – Leaf Curl Lime-sulfer in winter time Ferbam Sulfer Wettable Bravo fungicide Control

46. Brambles – Crown Gall

47. Brambles – Crown Gall Avoid infested soil Remove infected plants Disease free plants Control

48. Apple – Bitter Rot

49. Apple – Bitter Rot Spray with Captan Remove dead branches Control

50. Cherry – Brown Rot

51. Cherry – Brown Rot Spray withCaptan + Topsin-M mixed. Control

52. Peaches – Brown Rot

53. Peaches – Brown Rot Wettable sulfer Benlate plus Captan Benlat plus Sulfer Control

54. Barley - Scald

55. Barley - Scald Use resistant varieties Control

56. Apple – Cedar Rust

57. Apple – Cedar Rust Remove alternate host Rubigan + Captan Rubigan + Ziram Control

58. Strawberry – Leaf Spot

59. Strawberry – Leaf Spot Spray with Captan Topsin-M Control

60. Apple – Frog-eye Leaf Spot

61. Apple – Frog-eye Leaf Spot Spray with Captan Nova + mancozeb Remove diseased parts Control

62. Barley – Covered Smut

63. Barley – Covered Smut Treat seed with suitable chemical Control

64. Apple – Fire Blight

65. Apple – Fire Blight Remove diseased parts Streptomycin Bordeaux Fixed copper Control

66. Potato – Hopperburn

67. Potato - Hopperburn Spray with Methoxychlor Control

68. Barley – Stripe Rust

69. Barley – Stripe Rust Treat seed with suitable chemical Control

70. Corn – Northern Leaf Blight

71. Corn – Northern Leaf Blight Use resistant varieties Control

72. Plum – Brown Rot

73. Plum – Brown Rot Spray with Captan Topsin-M mixed. Control

74. Potato – Black Leg

75. Potato – Black Leg Treat seed with Captan Polyram Disease free seed Control

76. Barley – Powdery Mildew

77. Barley – Powdery Mildew Use resistant varieties Control

78. Wheat – Loose Smut

79. Wheat – Loose Smut Hot water seed treatment Water soak treatment Treat seed with a suitable chemical Control

80. Grapes – Powdery Mildew

81. Grapes – Powdery Mildew Bordeaux Fixed copper Bayleton Control

82. Peach - Scab

83. Peach - Scab Spray with wettable sulfur + Benlate Control

84. Potato – Leaf Roll

85. Potato – Leaf Roll Use disease free seed Control

86. Barley – Loose Smut

87. Barley – Loose Smut Treat seed with suitable chemical Hot water – long water soak treatment. Control

88. Potato - Scab

89. Potato - Scab Acidify soil Use resistant varieties Control

90. Wheat – Stem Rust

91. Wheat – Stem Rust Use resistant varieties Destroy alternate host Control

92. Wheat – Leaf Rust

93. Wheat – Leaf Rust Use resistant varieties Control

94. Potato – Ring Rot

95. Potato – Ring Rot Use disease free seed Control

96. Alfalfa - Leaf Spots

97. Alfalfa - Leaf Spots Cut foliage in a timely manner Control

98. Grapes - Black Rot

99. Grapes - Black Rot Ferbam Captan Bayleton Control

100. Potato - Rhizoctonia

101. Potato - Rhizoctonia No practical control Cultural practice- plant shallow and hill deep. Control

102. Brambles - Anthracnose

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

104. Oats - Stem Rust

105. Oats - Stem Rust Use resistant varieties Destroy alternate host Control

106. Crucifers - Club Root

107. Crucifers - Club Root Avoid infested soil Apply lime to soil Control

108. Plum - Brown Rot

109. Plum - Brown Rot Spray with Captan and Topsin-M mixed. Control

110. Potato – Early Blight

111. Potato – Early Blight Spray with Mancozeb Copper Bravo fungicides Control

112. Alfalfa - Downy Mildew

113. Alfalfa - Downy Mildew Cut foliage in a timely manner Control

114. Bramble - Orange Rust

115. Bramble - Orange Rust Remove infested plants, including roots Control

116. Crucifers - Soft Rot

117. Crucifers - Soft Rot Prevent mechanical and insect injuries to plants Control

118. Clover - Sclerotinia Crown Rot

119. Clover - Sclerotinia Crown Rot No practical control Control

120. Crucifers - Black Leg

121. Crucifers - Black Leg Use clean seeds Hot water treatment Rovral Control

122. Grapes - Downy Mildew

123. Grapes - Downy Mildew Bordeaux Fixed copper Control

124. Plum - Black Knot

125. Plum - Black Knot Cut and destroy diseased parts Spray with Captan Control

126. Clover - Rust

127. Clover - Rust No practical control Control

128. Potato - Mosaic Virus

129. Potato - Mosaic Virus Use disease free seed Control

130. Clover - Powdery Mildew

131. Clover - Powdery Mildew Use resistant varieties Control

132. Cucurbits - Powdery Mildew

133. Cucurbits - Powdery Mildew Spray with Bravo Control

134. Beans - Mosaic Virus

135. Beans - Mosaic Virus No chemical control. Control weeds Use disease free seed Control

136. Cherry - Leaf Spot

137. Cherry - Leaf Spot Spray with Captan and Topsin-M mixed Control

138. Bean - Rust

139. Bean - Rust Sulfur dust Bravo fungicides Resistant varieties. Control

140. Oats - Crown Rust

141. Oats - Crown Rust Use resistant varieties Control

142. Oats - Loose Smut

143. Oats - Loose Smut Treat seed with suitable chemical Control

144. Tomato - Wilt Diseases

145. Tomato - Wilt Diseases Use resistant varieties Control

146. Cucurbits - Anthracnose

147. Cucurbits - Anthracnose Mancozeb Bravo fungicides Topsin-M Control

148. Cucurbits - Downy Mildew

149. Cucurbits - Downy Mildew Bravo fungicides Mancozeb Quadris Control

150. Corn - Southern Leaf Blight

151. Corn - Southern Leaf Blight Use resistant varieties Control

152. Peach - Yellows

153. Peach - Yellows Pull and destroy disease trees Control

154. Corn - Grey Leaf Spot

155. Corn - Grey Leaf Spot Use resistant varieties Control