any disease or disorder. regardless of their.. causal agent that kills young plant tissues .
Merriam-Webster Online Dictionaryblight (noun)
a) a disease or injury of plants marked by the formation of lesions, withering, and death of parts (as leaves and tubers)
b) an organism (as an insect or a fungus) that causes blight
something that frustrates plans or hopes
something that impairs or destroys
a deteriorated condition - urban blight
to affect (as a plant) with blight
to impair the quality or effect of - the condition that has blighted his son's life Patricia Guthrie to suffer from or become affected with blight
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Blight refers to a specific sign affecting plants in response to infection by a pathogenic organism.