Crop diversity fruit trees and banana plants) are cloned. A single pest or disease could threaten a whole crop due to this uniformity ("genetic erosion"). A well-known historic case was the Irish Potato Famine of 1845-1847, where a vital crop with low diversity was destroyed by a single fungus. Another example is when a disease caused by a fungus affected the monocultured 1970 US corn crop, causing a loss of over one billion dollars in production. A danger to agriculture is wheat rust, a pathogenic fungus causing reddish patches, coloured by its spores. A virulent form of the wheat disease, stem rust,
Crop (implement) carry one as his favourite weapon (e.g., "The Adventure of the Six Napoleons"). Specifically, it is a "loaded" hunting crop. Such crops were sold at one time. Loading refers to the practice of filling the shaft and head with a heavy metal (e.g., steel, lead) to provide some heft. Fetishism<br> Crops may sometimes be employed by sado-masochistic tops as an implement to "tame" their sexual partner. Art deco sculptor Bruno Zach produced perhaps his best known sculpture—called "The Riding Crop" (c. 1925)—which features a scantily clad dominatrix wielding a crop. Crop (implement) A crop, sometimes called a riding crop or