Crop diversity are all susceptible to a single fungus, "Fusarium oxysporum" (Panama disease); large areas of the crop were destroyed by the fungus in the 1950s. 'Gros Michel' has been replaced by the current main banana on the market, the 'Cavendish', which in turn is (2015) at risk of total loss to a strain of the same fungus, 'Tropical Race 4'. Such threats can be countered by strategies such as planting multi-line cultivars and cultivar mixes, in the hope that some of the cultivars will be resistant to any individual outbreak of disease. The implications of crop diversity are at both local
Crop top gear of American football with no shirt resembles a crop top. Eventually cropped jerseys became available which carried over to several 1980s telecasts. Men also started to wear crop tops regardless of sport. Because of the varied acceptance for men wearing no shirt (eliminating the need for a crop top), and due to a change in school dress codes as well as peer pressure, men usually do not wear crop tops. Various crop tops have been worn by rappers as well as American football athletes. However, in 2015 the NCAA has increased restrictions on men wearing crop tops which also