Journal of The Korean Society of Grassland and Forage Science (한국초지조사료학회지)

The Korean Society of Grassland and Forage Science (한국초지조사료학회)
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Evaluation of Characteristics and Forage Production for Bermudagrass (Cynodon dactylon) and Bahiagrass (Paspalum notatum) in Jeju

제주지역에서 버뮤다그라스 및 바히아그라스의 생육특성 및 사초생산성 평가

  • Received : 2012.05.02
  • Accepted : 2012.06.12
  • Published : 2012.06.30
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Abstract

This study was conducted to evaluate the characteristics and forage production of bermudagrass (Cynodon dactylon) and bahiagrass (Paspalum notatum) in Jeju. Bermudagrass cultivars evaluated were Common and Ecotype. Bahiagrass cultivars evaluated were Tifton 9 and Argentine. Two warm season grasses were established at the Subtropical Animal Experiment Station in spring 2007. Emergence of bremudagrass and bahiagrass was observed approximately 16 days and 28 days after seeding, respectively. The heading dates of bermudagrass and bahiagrass were on 26 May and in mid-July, respectively. Bermudagrass cultivars had higher dry matter (DM) than bahiagrass at first harvest. Dry matter yield of bahiagrass was higher than that of bermudagrass (p<0.05). Peak forage DM production of bermudagrass and bahiagrass cultivars was in June and July, respectively. The content of crude protein (CP) and total digestibility nutrient (TDN) of bermudagrass cultivars were higher than those of bahiagrass during the first harvest. Acid detergent fiber (ADF) and in vitro DM digestibility (IVDMD) were similar across the four cultivars. In Jeju, bermudagrass and bahiagrass provide a useful option for supplemental summer forage in most livestock forage systems.

본 연구는 제주지역에서 난지형 목초의 도입을 위한 버뮤다그라스와 바히아그라스의 생육특성 및 사초생산성을 평가하기 위하여 국립축산과학원 난지축산시험장 조사료 시험포장 (해발 200 m)에서 2007년 4월부터 2009년 12월까지 수행하였다. 난지형 영년생 화본과 목초인 버뮤다그라스 "Common", "제주 자생형 (Ecotype)" 품종과 바히아그라스 "Argentine", "Tifton 9" 품종을 2007년 4월 22일에 파종하였다. 버뮤다그라스의 출현일은 5월 8일로 파종 후 16일정도 소요되었으며 바히아그라스는 파종 후 24~28일 정도 소요되는 것으로 나타났다. 출수기는 버뮤다그라스 Common은 5월 28일, 바이하그라스 Tifton 9은 7월 4일에 출수기에 도달하였다. 버뮤다그라스의 3년간 평균 건물수량은 Common이 16,749 kg/ha으로 Ecotype 보다 다소 높게 나타났으며 바히아그라스에 있어서는 Tifton 9이 23,695 kg/ha으로 Argentine 보다 높게 나타났다. 조단백질 함량은 버뮤다그라스의 Ecotype이 13.86%로 가장 높게 나타났으며 ADF 함량은 버뮤다그라스 common이 27.97%로 가장 낮은 것으로 나타났다. 총 가소화영양소 (TDN) 함량은 버뮤다그라스가 65.48%로 바히아그라스 보다 높은 것으로 나타났으며 in vitro 건물소화율은 각각 70.90%, 70.44%로 두초종이 모두 비슷한 경향을 보였다. 이상의 결과를 종합해 볼 때 제주지역에서 버뮤다그라스와 바히아그라스는 월동이 가능하여 여름철 조사료자원으로 활용이 가능하고 또한 지하경과 포복경을 가지고 있어 말의 제상에 강한 특성을 가지고 있어 여름철 방목용 초종으로 적합한 것으로 판단된다.

Keywords

References

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