angular leaf spot disease of cotton

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• angular leaf spot — noun also angular spot : a disease of plants in which the leaf spots have angular and usually sharply limited outlines (as that of cotton caused by the bacterium Xanthomonas malvacearum and that of cucumber caused by the bacterium Pseudomonas… …   Useful english dictionary

• cotton — /kot n/, n. 1. a soft, white, downy substance consisting of the hairs or fibers attached to the seeds of plants belonging to the genus Gossypium, of the mallow family, used in making fabrics, thread, wadding, etc. 2. the plant itself, having… …   Universalium

• Cotton — /kot n/, n. John, 1584 1652, U.S. clergyman, colonist, and author (grandfather of Cotton Mather). * * * I Seed hair fibre of various plants of the genus Gossypium, in the mallow family, native to most subtropical countries. The shrubby plants… …   Universalium

• plant disease — ▪ plant pathology Introduction       an impairment of the normal state of a plant that interrupts or modifies its vital functions.       All species of plants, wild and cultivated alike, are subject to disease. Although each species is… …   Universalium

• blackarm — ˈ ̷ ̷ˌ ̷ ̷ noun also blackarm disease (ˈ) ̷ ̷| ̷ ̷ : a form of angular leaf spot producing dark lesions on the stem and petioles of cotton …   Useful english dictionary

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