
1) Materials degradation
Found on
https://www.crosswordclues.com/clue/red-rot
[leather] Red rot (also redrot) is a degradation process found in vegetable-tanned leather. Red rot is caused by prolonged storage or exposure to high relative humidity, environmental pollution, and high temperature. In particular, red rot occurs at pH values of 4.2 to 4.5. Sulfur dioxide converts to sulfurous acid which forms hydrogen pero...
Found on
http://en.wikipedia.org/wiki/Red_rot_(leather)

(from the article `sugarcane`) ...of the fanlike tops, is caused by an East Indian virus. Mosaic, mottling or spotting of foliage and sometimes curling, dwarfing, and narrowing of ...
Found on
http://www.britannica.com/eb/a-z/r/23
No exact match found.