Miscanthus, sorghum, switchgrass, jatropha, camelina, carinata and arundo are the most popular land-based energy crops today, but efforts to produce them at commercial scale are hindered by several factors, writes Jim Lane. All seven show big potential, but some do not get enough support from farmers, others are difficult to aggregate or harvest, some suffer from failed experiments in the past, and arundo is deemed an invasive species by some experts, Lane notes.

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