This study evaluated the effects of seed mixtures of warm-season grasses and forage crops into tall fescue pastures on botanical composition, growth characteristics, and dry matter (DM) yield in the central region of Korea from 2023 to 2025. Tall fescue was seed mixture with crabgrass, bermudagrass, or barnyard millet in a randomized complete block design with three replicates. In 2024, total DM yield differed significantly among treatments (p<0.05). The tall fescue + barnyard millet treatment (T3) produced the highest yield (15,848 kg DM ha⁻¹), whereas the tall fescue monoculture (T1) and tall fescue + bermudagrass treatment (T4) showed lower yields of 12,358 and 10,173 kg DM ha⁻¹, respectively. In 2025, no significant differences were observed among treatments (p>0.05), with annual yields ranging from 13.5 to 14.5 Mg DM ha⁻¹. Over the two-year period, T3 showed the highest average DM yield, while T2 (tall fescue + crabgrass) produced yields comparable to T3. Crabgrass established rapidly and improved summer ground cover, whereas bermudagrass exhibited superior persistence and regrowth. Both crabgrass and barnyard millet effectively compensated for the summer decline in tall fescue productivity. However, excessive dominance of warm-season species reduced tall fescue persistence. These results indicate that interseeding tall fescue with crabgrass or barnyard millet is an effective strategy for improving summer pasture productivity, although optimization of seeding ratios and sowing time is required.

ABSTRACT
Ⅰ. 서론
Ⅱ. 재료 및 방법
    1. 시험포 조성 및 생육관리
    2. 톨 페스큐-난지형 목초 혼파 초지의 식생변화
    3. 톨 페스큐-난지형 목초 혼파 초지의 예취시기별 초장 변화
    4. 톨 페스큐-난지형 목초 혼파 초지의 예취시기별 건물생산성변화
Ⅳ. 요약
Ⅴ. 사사
Ⅵ. REFERENCES

• 이원영(한국농수산대학교 한우과) | Won Young Lee (Department of Beef Science, Korea National College of Agriculture and Fisheries, Jeonju 54874, Republic of Korea)
• 정진우(국립축산과학원 조사료생산시스템과) | Jin woo Jeong (Forages Production Systems Division, National Institute of Animal Science, Cheonan 31000, Republic of Korea)
• 박형수(국립축산과학원 조사료생산시스템과) | Hyung Soo Park (Forages Production Systems Division, National Institute of Animal Science, Cheonan 31000, Republic of Korea)
• 우제훈(국립축산과학원 조사료생산시스템과) | Jae Hoon Woo (Forages Production Systems Division, National Institute of Animal Science, Cheonan 31000, Republic of Korea)
• 고하늘(국립축산과학원 조사료생산시스템과) | Ha Neul Go (Forages Production Systems Division, National Institute of Animal Science, Cheonan 31000, Republic of Korea)
• 양승학(국립축산과학원 조사료생산시스템과) | Seong Hak Yang (Forages Production Systems Division, National Institute of Animal Science, Cheonan 31000, Republic of Korea)
• 정종성(국립축산과학원 조사료생산시스템과) | Jeong Sung Jung (Forages Production Systems Division, National Institute of Animal Science, Cheonan 31000, Republic of Korea) Corresponding author