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Bacterial Plant Diseases
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Bacterial Ring Rot of Potato
Symptoms: Chlorosis of leaf margins, wilting, rotting of vascular ring; Causal Agent: Clavibacter michiganensis; Treatment: Use of certified seed potatoes, destruction of infected tubers
Citrus Canker
Symptoms: Raised lesions on leaves, fruit, and stems; Causal Agent: Xanthomonas axonopodis; Treatment: Copper-based bactericides, eradication of infected trees
Bacterial Leaf Spot
Symptoms: Small, water-soaked spots on leaves, expanding to brown lesions; Causal Agent: Pseudomonas syringae; Treatment: Copper-based bactericides, resistant cultivars
Fire Blight
Symptoms: Wilting and blackening of shoots; Causal Agent: Erwinia amylovora; Treatment: Pruning infected areas, applying bactericides
Common Scab of Potato
Symptoms: Corky scabs on potato tubers; Causal Agent: Streptomyces scabies; Treatment: Maintain soil pH below 5.2, choose resistant cultivars
Greasy Spot of Citrus
Symptoms: Blotchy, greasy lesions on underside of leaves; Causal Agent: Mycosphaerella citri; Treatment: Fungicidal sprays, proper nutrient management
Bacterial Spot of Pepper and Tomato
Symptoms: Small, raised, brown lesions on fruits and leaves; Causal Agent: Xanthomonas spp.; Treatment: Copper bactericides, resistant varieties, avoiding overhead irrigation
Pierce's Disease of Grape
Symptoms: Leaf scorch, reduced grape yield, vine death; Causal Agent: Xylella fastidiosa; Treatment: Insect vector control, removal of affected vines
Halo Blight of Bean
Symptoms: Small, water-soaked spots surrounded by a chlorotic halo; Causal Agent: Pseudomonas savastanoi pv. phaseolicola; Treatment: Use of pathogen-free seed, resistant varieties, copper bactericides
Soft Rot
Symptoms: Soft, wet, decay of plant tissues; Causal Agent: Various species of Erwinia, Pectobacterium; Treatment: Proper storage, crop rotation, sanitation
Bacterial Soft Rot of Potato
Symptoms: Soft, mushy, foul-smelling tubers; Causal Agent: Erwinia carotovora; Treatment: Proper storage conditions, sanitation, certified seed
Bacterial Blight
Symptoms: Wilt, yellowing of foliage, and possible plant death; Causal Agent: Xanthomonas oryzae; Treatment: Resistant varieties, crop rotation, chemical control
Wildfire of Tobacco
Symptoms: Irregularly shaped, oily green lesions on leaves; Causal Agent: Pseudomonas syringae pv. tabaci; Treatment: Crop rotation, resistant tobacco varieties, copper-based bactericides
Angular Leaf Spot of Cucumber
Symptoms: Small, angular, water-soaked spots on leaves; Causal Agent: Pseudomonas syringae pv. lachrymans; Treatment: Crop rotation, resistant varieties, copper sprays
Speck Disease of Tomato
Symptoms: Small, dark spots on leaves and fruits; Causal Agent: Pseudomonas syringae pv. tomato; Treatment: Resistant tomato varieties, copper-based bactericides, proper spacing
Bacterial Wilt
Symptoms: Sudden wilting and yellowing of leaves; Causal Agent: Ralstonia solanacearum; Treatment: Crop rotation, resistant cultivars
Stewart's Wilt of Corn
Symptoms: Linear lesions on leaves, wilting, stunted growth; Causal Agent: Pantoea stewartii; Treatment: Insect control, resistant corn hybrids
Bacterial Fruit Blotch of Watermelon
Symptoms: Water-soaked lesions on fruit and foliage; Causal Agent: Acidovorax avenae subsp. citrulli; Treatment: Seed treatment, crop rotation, sanitation
Crown Gall
Symptoms: Tumour-like growths at the base or 'crown' of the plant; Causal Agent: Agrobacterium tumefaciens; Treatment: Applying beneficial nematodes, genetic resistance
Black Rot
Symptoms: V-shaped yellowing of leaf margins, blackened veins; Causal Agent: Xanthomonas campestris; Treatment: Crop rotation, resistant varieties, sanitation
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