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 'Gros Michel' has been replaced by the current main banana on the market, the 'Cavendish', which in turn is (2015) at risk of total loss to a strain of the same fungus, 'Tropical Race 4'.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 art figures are found all over the world; though many do not attribute their manifestation to visitations by alien beings. Crop Circles are sometimes called crop formations, agroglyphs, or pictograms. Some are also created by recognized "landscape artists" for commercial purposes. Crop art Crop art is an environmental art practice using plants and seeds in the landscape to create statements, marks and/or images. Agnes Denes, Matthew Moore (artist), Dennis Oppenheim and Stan Herd are practitioners of Crop art. Some works of Land art, and Earth art are similar in scale, and can be seen only from aerial viewpoints. One folk art