This study was carried out to investigate the effects of sowing dates, Apr. 25, May 15, June 5 and June 25, on sex ratio, growth and seed yield of "Chonnam species", local variety of hemp plant. The results were following as. : In sex ratio according to the different seeding dates, the revealating rate of female and male plants were highest on June 25, and Apr. 25, respectively. The length of stem, the number of branches, nodes, and seed yield were increased on May 15, but these charateristics were rapidly reduced on June 25 because of short growing period. Yield of seeds was increased by 24％ on May 15 comparing with 1.30ton /ha on Apr. 25.

• 朴圭哲(전남농촌진흥원) | 박규철
• 朴泰東(전남농촌진흥원) | 박태동
• 朴仁珍(전남농촌진흥원) | 박인진
• 權炳善(순천대학교 농과대학) | 권병선
• 金相喆(전남농촌진흥원) | 김상철
• 丁炳俊(전남농촌진흥원) | 정병준
• 金明奭(전남농촌진흥원) | 김명석