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Effects of Planting Density, Cultivar and Growing Days on the Dry Matter Yield and Forage Quality of Kenaf (Hibiscus cannabinus L.) in Cheorwon, Korea

철원지역에서 재배한 양마 (Kenaf, Hibiscus cannabinus L.)의 재식거리와 품종, 수확시기에 따른 건물수량 및 사료성분의 변화

  • Han, Sang-Eun (College of Animal Life Science, Kangwon Natl. Univ.) ;
  • Sung, Kyung-Il (College of Animal Life Science, Kangwon Natl. Univ.) ;
  • Cho, Dong-Ha (College of Agriculture and Life Science, Kangwon Natl. Univ.) ;
  • Jin, Cheng-Wu (College of Agriculture and Life Science, Kangwon Natl. Univ.) ;
  • Kim, Byong-Wan (College of Animal Life Science, Kangwon Natl. Univ.)
  • 한상은 (강원대학교 동물자원과학대학) ;
  • 성경일 (강원대학교 동물자원과학대학) ;
  • 조동하 (강원대학교 농업생명과학대학) ;
  • 김성무 (강원대학교 농업생명과학대학) ;
  • 김병완 (강원대학교 동물자원과학대학)
  • Published : 2006.12.30

Abstract

This study was conducted to evaluate the dry matter yield and forage quality of Kenaf in relation to planting density and growing days in Cheorwon area from 20 May to 12 September in 2005. The experiment was laid out in a split plot design with three replications. The main plots consisted of planting density and growing days with three cultivars of Kenaf as sub-plots; Bowling, Everglade and Tainung. The results obtained were summarized as follows. The dry matter yield increased until 92 days after planting at $10{\times}10cm^2$ planting density, but decreased after the day. The dry matter yield increased with maturity in all three cultivars, especially Dowling showed the highest dry matter yield at each harvest time. The Crude Protein (CP) contents of all three cultivars decreased with maturity. Especially, the decrease in the CP contents was greater in the early stage than in the late stage. The planting density did not affect the CP contents, even though they are little higher in $10{\times}20cm^2$ planting density. The higher CP contents were obseued in Dowling, which is not significant. No difference in the Neutral detergent fiber (NDF) and Acid detergent fiber (ADF) contents was observed in the planting density and cultivar, although the increasing tendency was found with maturity. These results suggest that Kenaf can be a good potential forage crop in the northern area of Korea, especially Dowling showed the great dry matter yield and forage quality when harvested on Day 104 at $10{\times}20cm^2$ planting density.

본 연구는 양마 3품종을 재식거리, 품종 및 수확시기에 따른 건물수량과 사료성분의 변화를 검토하고자 강원도 철원지역에서 2005년 5월 20일부터 2005년 9월 12일까지 수행되었다. 시험배치는 3반복 분할구 배치로 주구는 재식거리와 수확시기를, 세구는 양마 3품종(Dowling, Everglade 및 Tainung)을 배치했으며, 결과를 요약하면 다음과 같다. 생육일수에 따른 건물 생산량은 93일까지는 재식거리가 $10{\times}10cm^2$ 구에서 높게 나타났다. 품종별 건물생산량에서는 모든 품종이 생육시기가 진행됨에 따라 건물수량이 높아지는 경향을 보였고, 특히 Bowling이 모든 수확시기에서 가장 높은 건물생산량을 보였다. 조단백질 함량은 생육일수가 길어짐에 따라 감소하는 경향을 보였다. 특히, 생육 중기(생육일수 84일)을 기준으로 생육초기에는 조단백질 함량은 큰 차이를 나타내지 않았지만, $10{\times}20cm^2$ 구에서 다소 높게 나타났다. 품종별로는 Bowling의 조단백질 함량이 다소 높은 것으로 조사되었으나, 큰 차이는 나타내지 않았다. 재식거리 및 품종에 따른 NDF와 ADF 함량의 차이는 조사된 3 품종 공히 생육시기가 지나감에 따라 다소 증가하는 경향을 보였지만, 큰 유의적 차이는 나타나지 않았다. 이상의 결과를 종합해 보면, 양마는 우리나라 중북부 지방에서 훌흉한 사료작물로서의 가능성이 검증되었고, 특히 Bowling 품종이 재식거리 $10{\times}10cm^2$로 파종하여 104일째 수확했을 때 가장 좋은 건물생산량과 품질을 보여주었다.

Keywords

References

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  1. Nutritive Value and Fermentation Quality of the Silage of Three Kenaf (Hibiscus cannabinas L.) Cultivars at Three Different Growth Stages vol.32, pp.4, 2012, https://doi.org/10.5333/KGFS.2012.32.4.353