Until they do, the monoculture of the banana means that the fruit is susceptible to widespread crop damage by Race Four and perhaps new diseases.

FORBES: Banana Fungus Threatens World Crop

Several crop growers, including the Florida Fruit and Vegetable Association, the National Council of Agricultural Employers and the North Carolina Growers' Association filed suit against the Labor Department, arguing that the agency acted inappropriately and that its new guidelines would raise labor costs for growers.

FORBES: Obama Era No Slam Dunk For Labor

Mangoes in Africa, as elsewhere, often fall prey to fruit flies, which destroy about 40% of the continent's crop.

ECONOMIST: Biological pest control