Texas Plant Disease Diagnostic Lab-
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Category Archives: News
Look out for Impatiens downy mildew
Apologize for the long silence, but been spending many days answering emails and phone calls. Things have been busy at the clinic with many different issues. Unfortunately, there is one that prompted me to write this blog entry. Several weeks ago, I received a couple of photos of bad looking impatiens. One of those leaves show symptoms which was suspicious of downy mildew. So I requested that a physical sample be sent to the Plant Clinic. Sure enough, we were able to find the water mold (Plasmopara obducens)… Read More →
Fireblight….it’s back!
I have neglected this page a little in the past couple of weeks as things have gotten busy. To ensure continued flow of “goodies” from the clinic, I have assigned a student worker and plant disease enthusiast to post photos of what we saw at the Plant Clinic’s Facebook page. If you have not been there, check us out – http://www.facebook.com/TXPlantClinic. In the past few days, we have been getting reports and samples of ornamental pear trees with nasty looking black shoots. This is one of the symptoms of a… Read More →
Fellow pathologist in the news
One of the most devastating diseases of cotton is a disease commonly known as Cotton Root Rot, caused by the fungus Phymatotrichopsis omnivora. This pathogen is one that can attack many different plants and is quite aggressive on many. In the landscape, this disease have done much damage to ornamental pears, lacey elms, pittosporiums and others. The devastating effect of this disease is noted in history of Texas. In Northeast Texas (around the Dallas-Fort Worth area and some parts of the blacklands (along the I-35 corridor) in Central… Read More →
Additional option for Golf Course managers to deal with nematodes.
Plant parasitic nematode are little tiny “worms” that attack plants. Mostly are soil inhabitants, therefore roots are the usual target of plant parasitic nematodes. On the golf course, plant parasitic nematode can be a huge problem. On golf greens, their effect on the grass can reduce the quality of the grass, in terms of growth and vigor. This could affect playability. Several years ago, products that are available as nematicide were removed from the market. One such product that had been the standard chemical treatment on golf greens… Read More →
Really long week and a half.
A week ago I was sitting in meetings in Florida. This was a trip with other researchers, extension personnel and citrus growers from Texas to the University of Florida Citrus Research & Extension Center in Lake Alfred. The discussion included various lesson learned from the situation in Florida. These information were shared by their research, extension personnel and the Florida citrus growers. Their situation was unique in that Citrus Greening (CG) first hit Florida in 2005. At that time, they did not know much about the disease and… Read More →
