Water and nitrogen interactively increased the biomass production of Jerusalem artichoke (Helianthus tuberosus L.) in semi-arid area

The response of height, aboveground and underground biomass of Jerusalem artichoke (Helianthus tuberosus L.) to water and nitrogen fertilization were studied in north-eastern Inner Mongolia, China. The results showed that water was a main limiting factor on the height and yield of Jerusalem artichoke; it significantly improved the height and yield of Jerusalem artichoke (including leaf, stem, root and tuber yields) (p