Deb, Debal, "Restoring Rice Biodiversity", Scientific American, vol. 321, no. 4 (October 2019), pp. 54–61. "<MASK> originally possessed some 110,000 landraces of rice with diverse and valuable properties. These include enrichment in vital nutrients and the ability to withstand flood, drought, salinity or pest infestations. The Green Revolution covered fields with a few high-yielding varieties, so that roughly 90 percent of the landraces vanished from farmers' collections. High-yielding varieties require expensive inputs. They perform abysmally on marginal farms or in adverse environmental conditions, forcing poor farmers into debt." (p. 54.)
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