Crop diversity between 20 and 90 percent crop losses in the Congo. The FAO emergency relief and rehabilitation program is assisting vulnerable returnee populations in the African Great Lakes Region through mass propagation and distribution of CMD resistant or highly tolerant cassava. A well known occurrence of disease susceptibility in crops lacking diversity concerns the 'Gros Michel', a seedless banana that saw world marketing in the 1940s. As the market demand became high for this particular cultivar, growers and farmers began to use the Gros Michel banana almost exclusively. Genetically, these bananas are clones, and because of this lack of genetic diversity,
Crop-lien system Crop-lien system The crop-lien system was a credit system that became widely used by cotton farmers in the United States in the South from the 1860s to the 1930s. Sharecroppers and tenant farmers, who did not own the land they worked, obtained supplies and food on credit from local merchants. The merchants held a lien on the cotton crop and the merchants and landowners were the first ones paid from its sale. What was left over went to the farmer. The system ended in the 1940s as prosperity returned and many poor farmers moved permanently to cities and towns, where