抄録
Yield tests were made for fresh and air-dried stems, leaves and heads in 385 varieties of "Wangul" which contalns two specres Cyperus Iwasakii M. and C. glomeratus L. collected from all the parts in Korea. Then the examination was carried out to know how much the air-dried fiber and pith could be produced from the green stems of several varieties. As the result, the yielding differences between the two species and among the varieties in them were shown clearly.
