Texas Plant Disease Diagnostic Lab-
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Category Archives: PLANT HOST
Mushroom rings invading your yard?
This is another assignment submitted by BESC484 student, B. Commer, as a partial requirement for the course. This was a situation that was pretty rampant 1-2 weeks ago after the rain we got in many parts of Texas. Some of these mushroom are still present. Enjoy- KO Are mushroom rings invading you yard? Over fifty different species of fungi have a unique characteristic of creating circular patches of mycelium lined with fruiting bodies on the outer edge. Grasses and turfs are most susceptible to these mushroom “fairy… Read More →
Actinopelte Leaf spot
The following is a blog post writing assignment from 2013 summer BURS (Bioenvironmental Undergraduate Research Scholar) and BESC 484 student, A. Brake. As previously mentioned, the student is asked to submit a short write up of something that interest them (related to plant pathology) which they may have seen or heard about in the Plant Clinic. They are also highly encouraged to take photographs of subject (training in photo documentation). Ms. Brake submitted a couple of excellent photo with her assignment below where she used a Dino-lite digital… Read More →
Broadmite damage on tomatoes
One the assignments that are given to undergraduate BESC 484 students who interned at the Texas Plant Disease Diagnostic Lab is to write blog post articles of things that might interest them. This fall, Blake Commer will be providing several of this write-up to fulfill partial requirement for this writing intensive course. Recently, the Plant Clinic received a tomato submission with broad mite damage. The following is a write up about the broad mite on tomato. Enjoy. -KO Broad Mites Causing Leaf Curling and Stunting in Tomato Plants… Read More →
Tomato Russet Mite
Last week a tomato sample was diagnosed with tomato russet mites (Aculops lycopersici). These conical-shaped insects, usually translucent and yellowish, cannot be seen without the aid of a 14X hand lens. Russet mites cause damage by feeding on leaves and stems, giving them a greasy or bronze appearance. Infestation normally begins at the base of the plant and progresses upwards as lower leaves dry out. Left alone, these mites can kill plants. Fortunately, they can be controlled with miticides or sulfur. Hosts include tomato, potato, eggplant, petunia, tomatillo,… Read More →
Perfect conditions for Cercospora
Be on the lookout for Cercospora leaf spot in your landscape plants! Recent weather conditions around the state like cool temperatures and high humidity seem to trigger an increase in Cercospora activity. Check your colorful fall annual bedding plants, including zinnias, hydrangeas, snapdragons and azaleas, for necrotic or purplish, angular leaf spots. A: Cercospora symptoms on a recent Pansy sample B: Conidiophores on leaf edge C: Cluster of Cercospora conidiophores
