Vegetable and Fruit Crops Pathology

I. Apple Scab

I have seen more apple scab this year in Illinois than the past five years. During the past five weeks, I have observed severe scab infection in the orchards central, western and northern Illinois. With the existing effective fungicides, control of apple scab should not be a difficult task. But in order to effectively control apple scab, fungicides must be applied on time. Apple scab is a season-long disease. But, infection takes places in spring. If it is not controlled in the early season, mid- or late-season applicatons of fungicides will likely not be effective. For more information on apple scab, click here.

II. Cucurbit Viral Diseases

In the past three weeks, viral diseases have been observed in cucurbits fields throughout Illinois. Most common viral diseases in Illinois, as well as in the Midwest, are caused by cucumber mosaic virus (CMV), papaya ringspot virus-type W (PRSV-W), squash mosaic virus (SqMV), watermelon mosaic virus(WMV), and zucchini yellow mosaic virus (ZYMV). For more information on cucurbit virus diseases in Illinois and their significance and management, click here. Good news is that there is lew incidence and low severity of viral diseases in Illinois than the past finve year.

III. Illinois 2004 Pumpkin Day

Illinois 2004 Pumpkin Field Day will be held at the Uinversity of Illinois Horticulture Research Station at St. Charles (near Chicago) on September 9, 2004. More information on the Pumpkin Day will be available later. For more information on the 2004 Pumpkin Field Day in Illinois, click here.

August 20th, 2004
	I. Apple Scab I have seen more apple scab this year in Illinois than the past five years. During the past five weeks, I have observed severe scab infection in the orchards central, western and northern Illinois. With the existing effective fungicides, control of apple scab should not be a difficult task. But in order to effectively control apple scab, fungicides must be applied on time. Apple scab is a season-long disease. But, infection takes places in spring. If it is not controlled in the early season, mid- or late-season applicatons of fungicides will likely not be effective. For more information on apple scab, click here. II. Cucurbit Viral Diseases In the past three weeks, viral diseases have been observed in cucurbits fields throughout Illinois. Most common viral diseases in Illinois, as well as in the Midwest, are caused by cucumber mosaic virus (CMV), papaya ringspot virus-type W (PRSV-W), squash mosaic virus (SqMV), watermelon mosaic virus(WMV), and zucchini yellow mosaic virus (ZYMV). For more information on cucurbit virus diseases in Illinois and their significance and management, click here. Good news is that there is lew incidence and low severity of viral diseases in Illinois than the past finve year. III. Illinois 2004 Pumpkin Day Illinois 2004 Pumpkin Field Day will be held at the Uinversity of Illinois Horticulture Research Station at St. Charles (near Chicago) on September 9, 2004. More information on the Pumpkin Day will be available later. For more information on the 2004 Pumpkin Field Day in Illinois, click here.