TPDDL calendar 2020

The new 2020 TPDDL calendar is out. If you are in AGGIELAND:  Your very own copy can be obtained at the new Department of Plant Pathology and Microbiology buiding (Rm 300, PLPM building) or at the TX Plant Disease Diagnostic Lab (1500 Research Parkway, Centeq Bldg).

You can also check to see if your county office have copies of these.  If not, have them request calendars from the TPDDL to be sent to your local Texas A&M AgriLife Extension county office.  Find your local office:


Factsheet information for the plant health issues represented by the images on the 2020 TPDDL calendar were written by graduate students enrolled in the Department of Plant Pathology & Microbiology  DR. DAVID APPEL’s Graduate level Introductory Plant Pathology course (PLPA601) in the 2019 Fall semester.  This effort by Extension, Research & Teaching faculty members in the Department of Plant Pathology & Microbiology at Texas A&M University aims to provide a high impact learning opportunity to train graduate students by tasking them with producing an informational output directed to the general public.  This activity provides an opportunity for the students to write, learn and produce a  (hopefully) useful product to communicate information on plant health issues to the public. 

Fairy ring mushroom Fairy rings in turf and lawns
PHOMOPSIS CANKER close up Phomopsis canker on oaks
red blotch disease on grapes Red blotch disease on grapes
Phyllosticta spores Black rot on grapes
Agrobacterium on grapes Crown gall on grapes

Bonus content – other diseases caused by Rhizobium spp. (syn. Agrobacterium spp.)
Crown galls on willows
Crown gall on roses

Pomegranate leaf spot Leaf spot (Cercospora) on pomegranates

Bonus content – other diseases causes by Cercospora sp.:
Cercospora blight on soybeans

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