Tag Archives: horticulture

Disease Du Jour (April 20, 2011)

I’ve heard that azalea leaf gall is quite prevalent in the Feliciana parishes this spring.  Some people considered these galls to be unsightly, but I guess that a matter of personal perception.  The fungus that causes them,  Exobasidium vaccinii, only invades the young expanding leaves during … Continue reading

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New Fungicide for Control of Large (Brown) Patch in Home Lawns

Believe it or not, fall is just around the corner, which means it’s almost time for large (or brown) patch to makes its annual appearance. Just a reminder that to control this disease fungicides should be applied preventatively beginning about mid-September, … Continue reading

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Disease Du Jour (August 12)

Today’s disease photos come courtesy of Stuart Gauthier in Vermillion Parish. Several Chinese elms in a landscape bed had died suddenly, and when the bark was removed from the base of the tree, white fungal mycelium that is typically associated … Continue reading

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Disease Du Jour (August 5)

Received today’s photo of a defoliated crape myrtle from Pat Hegwood (via Allen Owings). It has been a banner year for Cercospora leaf spots, particularly on crape myrtles, although in some areas the Leyland cypress have had their share of problems, too. Typically, we … Continue reading

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Disease Du Jour (July 15)

 Today’s disease images come to us by way of Rusty Batty in St. Tammany Parish. With the abundant moisture and humidity we’ve had recently, conditions have been ideal for a disease like fig leaf and web blight to exhibit itself. This disease is caused by … Continue reading

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Disease Du Jour (July 12)

To get the week off to a good start our “disease du jour” comes to us courtesy of Russell Harris in Orleans parish. This is oak leaf blister caused by the fungus Taphrina caerulescens. The disease develops on a wide variety of oaks … Continue reading

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Welcome to the Louisiana Plant Pathology blog

This blog is intended as means of keeping county agents and other interested parties informed about current diseases affecting horticultural crops in Louisiana and other issues related to plant pathology that may be of interest to them. The information presented is intended for … Continue reading

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