Vegetable and Fruit Crops Pathology

Vegetable Crops News:

Pumpkin Bacterial Wilt. During the past week, bacterial wilt of pumpkin was observed in several pumpkin fields throughout the state. Cucumber beetle vectors are responsible for bacterial dispersal within and between the fields. Therefore, control of bacterial wilt depends on control of the cucumber beetle vectors. For information on the bacterial wilt, click here. For information on control of bacterial wilt, consult the Midwest Vegetable Production Guide for Commercial Growers-2002, University of Illinois Extension.

Bean Bacterial Brown Spot. Bacterial brown spot of bean, caused by the bacterium Pseudomonas syringae pv. syringae, was observed in one field in northern Illinois. Plants were severely infected. For information on bacterial brown spot, click here. For information on control of bacterial brown spot, consult the Midwest Vegetable Production Guide for Commercial Growers-2002, University of Illinois Extension.

Onion Purple Blotch. Purple blotch of onion, caused by the fungus Alternaria porri, was observed in several onion fields. Information on purple blotch of onion can be found by clicking here. For information on control of onion purple blotch, consult the Midwest Vegetable Production Guide for Commercial Growers-2002, University of Illinois Extension.

Pepper Sun Scald. Sun scald of bell pepper is a common physiological disorder in central Illinois. To minimize yield losses to sun scald, maintain adequate fertility, practice timely irrigation, stake or trellis to prevent lodging, and maintain proper foliage by controlling defoliating insects.

Pepper Blossom End. Blossom end rot of pepper was reported from one bell pepper field in central Illinois. To minimize the damage caused by blossom end rot, maintain even moisture supply, avoid root pruning during cultivation, maintain proper soil PH and calcium(Ca) level, and use nitrate fertilizer. For more information on pepper blossom end rot, click here.

Pepper Bacterial Spot. Bacterial spot of peppers, caused by the bacterium Xanthomonas campestris pv. vesicatoria, was observed in southern Illinois. This disease occurs on bell peppers in southern Illinois every year. For information on bacterial spot of pepper, click here. For information on control of pepper bacterial spot, consult the Midwest Vegetable Production Guide for Commercial Growers-2002, University of Illinois Extension.

July 19th
	Vegetable Crops News: Pumpkin Bacterial Wilt. During the past week, bacterial wilt of pumpkin was observed in several pumpkin fields throughout the state. Cucumber beetle vectors are responsible for bacterial dispersal within and between the fields. Therefore, control of bacterial wilt depends on control of the cucumber beetle vectors. For information on the bacterial wilt, click here. For information on control of bacterial wilt, consult the Midwest Vegetable Production Guide for Commercial Growers-2002, University of Illinois Extension. Bean Bacterial Brown Spot. Bacterial brown spot of bean, caused by the bacterium Pseudomonas syringae pv. syringae, was observed in one field in northern Illinois. Plants were severely infected. For information on bacterial brown spot, click here. For information on control of bacterial brown spot, consult the Midwest Vegetable Production Guide for Commercial Growers-2002, University of Illinois Extension. Onion Purple Blotch. Purple blotch of onion, caused by the fungus Alternaria porri, was observed in several onion fields. Information on purple blotch of onion can be found by clicking here. For information on control of onion purple blotch, consult the Midwest Vegetable Production Guide for Commercial Growers-2002, University of Illinois Extension. Pepper Sun Scald. Sun scald of bell pepper is a common physiological disorder in central Illinois. To minimize yield losses to sun scald, maintain adequate fertility, practice timely irrigation, stake or trellis to prevent lodging, and maintain proper foliage by controlling defoliating insects. Pepper Blossom End. Blossom end rot of pepper was reported from one bell pepper field in central Illinois. To minimize the damage caused by blossom end rot, maintain even moisture supply, avoid root pruning during cultivation, maintain proper soil PH and calcium(Ca) level, and use nitrate fertilizer. For more information on pepper blossom end rot, click *here. Pepper Bacterial Spot.* Bacterial spot of peppers, caused by the bacterium Xanthomonas campestris pv. vesicatoria, was observed in southern Illinois. This disease occurs on bell peppers in southern Illinois every year. For information on bacterial spot of pepper, click here. For information on control of pepper bacterial spot, consult the Midwest Vegetable Production Guide for Commercial Growers-2002, University of Illinois Extension.
	Fruit Crops News: Raspberry Phytophthora Root Rot. Phytophthora root rot, caused by Phytophthora spp. was observed in two raspberry fields in the northern part of Illinois. For information on this disease, click here. For information on control of Phytophthora root rot of raspberries, consult the Midwest Commercial Small Fruit and Grape Spray Guide -2002, University of Illinois Extension.