When was foxtail introduced to China?

Carex alias: ladder grass; Scientific name: Phleum. Platen Searle. British name: Catstail (Europe), Herdgrass, Timothy (North America).

Pennisetum is a perennial forage with high quality and high yield. It is naturally distributed in temperate regions of Europe and Asia. In Europe, except Crete at the southernmost tip and Greenland in the northwest, it grows naturally all over Europe, but it is most commonly distributed in the north, west and middle. In Asia, it is mainly distributed in the Caucasus, Central Asia, Siberia and the Far East of the former Soviet Union, and also in China. In the northern hemisphere, it is generally born in meadows, valleys and low-humidity depressions in humid and cold mountainous areas with an altitude of 1000 ~ 2200m. John Hurd discovered the wild foxtail in New Hampshire in about 17 1 1 year. However, according to Edwards' (1948), it is considered that the early immigrants may have mixed their seeds with other things such as hay and bedding from Europe and brought them into the northeast of the United States by boat, which is an escape species. Around 1720, N.H.Timothy succeeded in popularizing this kind of fox tail in Maryland, North Carolina, Virginia and other States, and played an important role in local animal husbandry production. From then on, to 1747, this kind of grass was called "ladder grass" or "Hedgrass". Europe (including the former Soviet Union) is the earliest area for cultivating Setaria viridis. During the period of 1763, some Nordic countries introduced wild cattail and selected some cultivated strains. Swedes call the cattail cultivated "Angkampe". After 1800, Setaria viridis was introduced from the northeastern United States and planted in eastern Canada. The early strains of Australia and New Zealand came from northern Europe, and the early flowering strains came from the United States. 1874, Japanese Hokkaido introduced Setaria viridis from the United States for trial planting and cultivation. In 1930s, China Heilongjiang Province and Gansu Minxian introduced Setaria viridis from the United States for trial planting.