Vegetable and Fruit Crops Pathology

I. Powdery Mildew of Pepper

Powdery mildew of pepper, caused by the fungus Leveillula taurica, was recently observed in Illinois. This disease has not been a common disease in Illinois. Powdery mildew can be a serious disease of peppers in warm, arid, and semiarid growing regions. Infection often leads to defoliation, which can lead to severe losses of pepper crops.

The most noticeable of the sign of the disease is a white, powder growth on the underside of leaves. Light green to yellow lesions with necrotic centers may form on the upper leaf surface. Eventually, the entire leaf turns pale yellow or brownish. Symptoms develop on older leaves first. When conditions are highly favorable for disease development, the pathogen may sporulate on the upper leaf surface. The edges of infected leaves eventually curl upward, revealing the fungus on the lower surface. Infected leaves drop prematurely from the plant, exposing fruit to the sun, so that they may subject to sunscald.

For more information on powdery of pepper, click here and visit the following websites:
http://vegetablemdonline.ppath.cornell.edu/NewsArticles/PepperyPowdery.htm

http://www.agf.gov.bc.ca/cropprot/peppermildew.pdf

http://www.agf.gov.bc.ca/cropprot/peppermildew.htm

II. Illinois Summer Horticulture Day

Illinois Summer Horticulture Day will be held in Edwards Apple Orchard near Poplar Grove, Illinois, on June 16, 2005.Edwards Apple Orchard is located near Poplar Grove, Illinois, approximately fifteen miles northeast of Rockford and 80 miles northwest of Chicago. Robert (Sr.) and Audrey Edwards raised corn, soybeans and livestock on the farm through the early 1960's. In 1963, Robert (Jr.) and Betty Edwards purchased the property and began the transition from dairy and row crop production to apple orchard and farm market. Ken and Barb (Edwards) Hall joined the family business in 1984, and purchased the business from Bob and Betty (Barb's parents) in 1990. Today, their focus continues to be on apples. They currently grow eleven varieties of apples (including Honey Crisp) forty-five acres. The trees are of dwarf and semi-dwarf types. Pumpkins and raspberries are also important crops and they grow small amounts of gourds, squash, ornamental corn and chrysanthemums. Pick-your-own apples has been a popular activity there for more than thirty years. they also offer pumpkins and raspberries as pick-your-own crops. For more information on Edwrds Apple Orchard, celick here.

III. Identifying and Manageing Cucurbit Pests

The publication Identifying and Managing Cucurbit Pests; Diseses, Insects, and Weeds in now available. To Place on order call 1-800-345-6087 or visit the website www.PublicationsPlus.uiuc.edu. For more information, click here.

May 27, 2005
	I. Powdery Mildew of Pepper Powdery mildew of pepper, caused by the fungus Leveillula taurica, was recently observed in Illinois. This disease has not been a common disease in Illinois. Powdery mildew can be a serious disease of peppers in warm, arid, and semiarid growing regions. Infection often leads to defoliation, which can lead to severe losses of pepper crops. The most noticeable of the sign of the disease is a white, powder growth on the underside of leaves. Light green to yellow lesions with necrotic centers may form on the upper leaf surface. Eventually, the entire leaf turns pale yellow or brownish. Symptoms develop on older leaves first. When conditions are highly favorable for disease development, the pathogen may sporulate on the upper leaf surface. The edges of infected leaves eventually curl upward, revealing the fungus on the lower surface. Infected leaves drop prematurely from the plant, exposing fruit to the sun, so that they may subject to sunscald. For more information on powdery of pepper, click *here* and visit the following websites: http://vegetablemdonline.ppath.cornell.edu/NewsArticles/PepperyPowdery.htm http://www.agf.gov.bc.ca/cropprot/peppermildew.pdf http://www.agf.gov.bc.ca/cropprot/peppermildew.htm II. Illinois Summer Horticulture Day Illinois Summer Horticulture Day will be held in Edwards Apple Orchard near Poplar Grove, Illinois, on June 16, 2005.Edwards Apple Orchard is located near Poplar Grove, Illinois, approximately fifteen miles northeast of Rockford and 80 miles northwest of Chicago. Robert (Sr.) and Audrey Edwards raised corn, soybeans and livestock on the farm through the early 1960's. In 1963, Robert (Jr.) and Betty Edwards purchased the property and began the transition from dairy and row crop production to apple orchard and farm market. Ken and Barb (Edwards) Hall joined the family business in 1984, and purchased the business from Bob and Betty (Barb's parents) in 1990. Today, their focus continues to be on apples. They currently grow eleven varieties of apples (including Honey Crisp) forty-five acres. The trees are of dwarf and semi-dwarf types. Pumpkins and raspberries are also important crops and they grow small amounts of gourds, squash, ornamental corn and chrysanthemums. Pick-your-own apples has been a popular activity there for more than thirty years. they also offer pumpkins and raspberries as pick-your-own crops. For more information on Edwrds Apple Orchard, celick here. III. Identifying and Manageing Cucurbit Pests The publication Identifying and Managing Cucurbit Pests; Diseses, Insects, and Weeds in now available. To Place on order call 1-800-345-6087 or visit the website www.PublicationsPlus.uiuc.edu. For more information, click here.