Medical tests started in the 1940s and 1950s, searching for the cause of the disease. Initially, it was expected to be lead poisoning due to the lead mining upstream. Only in 1955 did Dr. Ogino and his colleagues suspect cadmium as the cause of the disease. Ogino coined the term itai-itai disease.
Salix babylonica, commonly called weeping willow or Babylon weeping willow, is a medium to large deciduous tree with a stout trunk topped by a graceful broad-rounded crown of branches that sweep downward to the ground.It grows to 30-50â (sometimes to 60â) tall and as wide.It is native to China.alix babylonica, commonly called weeping willow or Babylon weeping willow, is a medium to large deciduous tree with a stout trunk topped by a graceful broad-rounded crown of branches that sweep downward to the ground. It grows to 30-50â (sometimes to 60â) tall and as wide. It is native to China.
Overview. Weeping willows are fast-growing trees that thrive in moist conditions, but will also grow in dry areas. They grow 35 to 45 feet tall and wide and have long pendulous branches. They are grown for their attractive form and have insignificant blooms and fruit.Rooting weeping willow branches is easy because they have preformed rooting initials, according to Ron Smith, North Dakota State University horticulturist.hey grow 35 to 45 feet tall and wide and have long pendulous branches. They are grown for their attractive form and have insignificant blooms and fruit. Rooting weeping willow branches is easy because they have preformed rooting initials, according to Ron Smith, North Dakota State University horticulturist.