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 'Gros Michel' has been replaced by the current main banana on the market, the 'Cavendish', which in turn is (2015) at risk of total loss to a strain of the same fungus, 'Tropical Race 4'.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
McKnight Foundation Collaborative Crop Research Program toward conservation of agricultural biodiversity, breeding and variety selection, seed systems, integrated crop and pest management, risk management and climate variability, nutrition, soil fertility management, and market development. East & Horn of Africa CoP (Ethiopia, Kenya, and Uganda) The E&HAf CoP aims to improve performance of farming systems primarily through support for crop diversification, for crop improvement and diversification, and an emphasis on management strategies that enhance crop access to scarce soil nutrients and water resources and reduce pest and disease losses. The CoP is also turning attention to post-harvest issues such as consumption, storage, transformation, and markets to increase