The present study investigated the effects of different seeding rates on growth characteristics and seed productivity of the “Kowinearly” cultivar of Italian ryegrass (Lolium multiflorum Lam.) in paddy fields. Sowing Kowinearly in paddy fields under growing rice at the rates of 20, 30, 40, and 50 kg/ha resulted in seed yields of 1.57, 1.92, 2.06, and 2.09 ton/ha, respectively. Seed yield of Kowinearly was the highest at a seeding rate of 50 kg/ha (p<0.05), at which the cultivar was able to survive in winter and the weed ratio was low. Under these conditions, most growth characteristics such as winter survival (85%), weed ratio (10%), stems per square meter (1,006) were superior than those sown at other seeding rates (p<0.05). In addition, it has been reported that the economic efficiency of the 50 kg/ha seeding rate was higher than that of the other seeding rates.

• Ki-Yong Kim(National Institute of Animal Science, RDA) Corresponding author
• Gi Jun Choi(National Institute of Animal Science, RDA)
• Sang-Hoon Lee(National Institute of Animal Science, RDA)
• Tae-Young Hwang(National Institute of Animal Science, RDA)
• Gi-Won Lee(National Institute of Animal Science, RDA)
• Hee Chung Ji(National Institute of Animal Science, RDA)
• Sung Min Park(National Institute of Animal Science, RDA)