leaf blotch

leaf blotch

[′lēf ‚bläch]
(plant pathology)
A plant disease characterized by discolored areas in the leaves with indistinct or diffuse margins.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
Leafand head blight diseases are Powdery mildew, leaf rust, leaf blotch (Septoria tritici), Stagonospora (Septoria) nodorum leaf, glumes blotch and Fusarium head scab [8, 9].
Schuh, "Influence of tillage systems on disease intensity and spatial pattern of Septoria leaf blotch," Phytopathology, vol.
Of special note is the chapter devoted to Diseases of Quarantine (Bacterila Tan Spot and Red Leaf Blotch).
Azoxystrobin helps in protecting crops against prevalent fungal diseases including Septoria leaf blotch, rye leafrust (Puccinia triticina), stripe rust, powdery mildew, wheat leaf rust (Puccinia recondita), and downy mildew.
Kate Turner, by email AHELLEBORE leaf blotch, which is caused by a fungus, is the problem.
It used to be known as sectorial leaf blotch and glume blotch.
Typical symptoms of septoria leaf blotch appeared as chlorotic spots with the presence of small black dots that are pycnidia.
As well as field tours, networking opportunities and fruit tasting, the event also hosted presentations by Paul Sneyd from Haygrove in Ledbury on the latest developments in poly-tunnel technology, Dirk Aerts from Biobest in Belgium on pollination and the James Hutton Institute's Dr Stuart MacFarlane, who talked about a newly emerging virus, the raspberry leaf blotch virus, and what he and his team are doing to understand this virus and its impact on raspberry crops.
Ken Simons, Warwickshire County Council's forestry officer, said: "The wet start to the year has had a severe impact and this is coupled with many of our common horse chestnuts suffering attacks from a range of pests and diseases, namely bacterial bleeding canker, leaf miner and leaf blotch.
- Kelly-Ann Rogers, Halesowen, West Mids PROBABLY 2 leaf blotch. Caused by a fungus, it attacks leaves, stems and flowers and can cause the plant to collapse.
The problem is hellebore leaf blotch, which is caused by a fungus.