0
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Leafspot on winter wheat, what is the pathogen?

Wheat    Moscow

Winter wheat, previous crop - wheat. White leafspot, oval in shape, with dark margins are common on 70% of plants. Unfortunately, I have no samples to do microscopic analysis or isolate the pathogen.


Posted by: alex ignatov (33 points) alex ignatov
Posted: April 1, 2017


Kelsee Baranowski commented,
Alex, is there a clearer image you could upload? Most of the spots are out of focus and a little hard to distinguish. Also, are the leaf spots flat or slightly 3-dimensional? Powdery mildew can leave white spots like these but typically does not have a dark margin
over 3 years ago.



Answers

1
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Hi Alex, agree the spots are not clearly visible, but they do resemble like herbicide damage. Did they spray any herbicide in the field?

http://www.mississippi-crops.com/2015...
http://www.deltafarmpress.com/wheat/w...
http://blogs.oregonstate.edu/bomingsb...


Posted by: Dr. Ravishankar Narayana (11 points) Dr. Ravishankar Narayana
Posted: April 4, 2017


alex ignatov commented,
Ravishankar, many thanks for idea! I have asked Syngenta people for better pictures.
over 3 years ago.



0
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This picture was made several days later. Is it better?


Posted by: alex ignatov (33 points) alex ignatov
Posted: April 5, 2017




0
points
please can you help me about more information of fall army worm


Posted by: hodan (1 point) hodan
Posted: September 10, 2019




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