leaf blotch
1leaf blotch — noun : a plant disease especially of fungous origin producing irregular dead or discolored areas in the leaves and distinguished from leaf spot mainly by the more indistinct or diffuse margins * * * Plant Pathol. 1. a symptom or phase of certain… …
2leaf blotch — Plant Pathol. 1. a symptom or phase of certain esp. fungal diseases of plants, characterized by necrotic discoloration of the leaves. 2. any disease so characterized. [1905 10] * * * …
3speckled leaf blotch — noun see speckled blotch …
4leaf spot — noun 1. : a discolored area on a leaf caused by parasitic organisms or environmental factors; especially : one having a more or less sharp line of demarcation between it and healthy tissue compare blotch, mosaic 2. : a disease characterized by… …
5Leaf spot — Leaf Spots are round blemishes found on the leaves of many species of plants, mostly caused by parasitic fungi or bacteria. A typical spot is zonal , meaning it has a definite edge and often has a darker border. When lots of spots are present,… …
6yellow leaf blotch — noun : a disease of alfalfa caused by a fungus (Pyrenopeziza medicaginis) and characterized by bright yellow or orange spots with small black dots chiefly on the undersides of the leaves …
7leaf miner — any of the larvae of any of numerous insects, as moths of the family Gracilariidae, that live in and feed on the parenchyma of leaves. Also, leafminer. [1820 30] * * * Any of various insect larvae that live and feed within a leaf, including… …
8speckled blotch — noun or speckled leaf blotch : disease of wheat caused by fungi of the genus Septoria and characterized by pinhead sized light colored leaf spots that later develop into blackish spore pustules …
9Spot blotch (wheat) — Spot blotch is a leaf disease of wheat caused by Cochliobolus sativus .cite book last = Wiese first = M.V. title = Compendium of wheat diseases publisher = American Phytopathological Society date = 1987 pages = 124 pp ] cite book last = Martens… …
10Spot blotch (barley) — Spot blotch is a disease of barley caused by Cochliobolus sativus . The disease is found everywhere that barley is grown, but only significant yield losses in warm, humid climates.cite book last = Mathre first = D.E. title = Compendium of barley… …
