Panama disease the Cavendish was then thought to be immune, but was immune only to the strain of the fungus that destroyed the Gros Michel. The version that annihilated the Gros Michel was found in only the Western Hemisphere, but the version found in Malaysian soil was different, and the Cavendish is susceptible to it. It killed and spread faster, inspiring more panic than its earlier counterpart in Panama. The newly discovered strain of "F. oxysporum" was named "tropical race 4 (TR4)". The resulting worldwide collapse in the banana trade is said to have inspired the song "Yes! We Have No Bananas".
Cover crop Cover crop A cover crop is a crop planted primarily to manage soil erosion, soil fertility, soil quality, water, weeds, pests, diseases, biodiversity and wildlife in an "agroecosystem" (Lu et al. 2000), an ecological system managed and largely shaped by humans across a range of intensities to produce food, feed, or fiber. Cover crops are an off season crop planted after harvest of the cash crop. The cover crop will grow up to, or into, the winter and may have to be terminated in the spring so as not to interfere with planting the cash crop. Cover crops are of