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Growth Characteristic and Productivity of Forage Corn Varieties Sown at the Last Ten Days of May in Central Region of Korea

중부지역에서 5월 하순 파종한 사료용 옥수수의 품종별 생육특성과 조사료 생산성

  • Received : 2019.01.31
  • Accepted : 2019.03.07
  • Published : 2019.03.31

Abstract

This experiment was carried out to evaluate the characteristic and productivity of forage corn varieties sown at the last ten days of May at Cheonan of Korea on 2017 and 2018. Forage corn varieties sown on 24th May 2017 and $25^{th}$ May 2018 were emerged in 5th and 1st June, respectively. Silking date of forage corns was different among varieties(p<0.05). Stem length of forage corns was not different among the varieties, except Kwangpyeongok(KPA) and Nero IT. Stem diameter of forage corns was not different amaong the varieties. Outbreak rate of black streaked dwarf virus was lower than 3% in all varieties. Total digestible nutrient(TDN) yield was different among corn varieties(p<0.05), which was higher in P32P75, followed by P2088, P31N27, and KPA. The TDN yield of varieties had direct correlation with stem length, stem diameter and ear yield, respectively(p<0.01). Average of TDN in all varieties was 69.8%. These results suggested that forage corn variety with late-seeding adaptability is more important for increasing the productivity of forage corn If harvesting of winter forage crops have to be finished in the middle ten days of May in middle region of Korea.

본 연구는 5월 하순경 늦게 파종하여 재배한 사료용 옥수수의 품종별 생육특성과 생산성을 평가하고 생육특성에 따른 생산성 변화요인을 분석하기 위하여 2017년부터 2018년까지 우리나라 중부지역인 충남 천안에서 수행되었다. 2017년 5월 24일과 2018년 5월 25일 파종한 사료용 옥수수는 6월 5일과 6월 1일에 각각 출현하였다. 출사기는 품종에 따라 차이가 있었고(p<0.05), 대부분의 품종은 7월 22일~23일 경이었다. 간장은 광평옥 품종과 Nero IT 품종 간에는 차이가 있었으나 나머지 품종들 간에는 차이가 없었다. 줄기의 굵기는 품종에 따라 19~22mm 범위였으나 차이가 없었다. 옥수수 검은줄오갈병의 발생률은 모든 품종에서 3% 이하로 낮았다. 가소화양분(TDN) 수량은 품종 간 차이가 있었고(P<0.05), TDN 수량이 많은 품종은 P32P75, P2088, P31N27, 광평옥 순이었다. 가소화양분(TDN) 수량은 줄기 길이, 줄기 굵기 및 이삭수량과 고도의 정의상관이 있었다(p<0.01). 12개 사료용 옥수수 품종들의 평균 TDN 함량은 69.8%였다. 우리나라 중부지역에서 동계사료작물을 5월 중순에 수확을 완료하고 사료용 옥수수를 파종한다면, 만파적응성이 우수한 P32P75, P2088, P31N27, 광평옥 품종을 선택하여 재배하는 것이 양질 조사료 생산성 향상에 유리할 것으로 사료된다.

Acknowledgement

Grant : 지역별 초지 및 사료작물의 재배환경과 재배기술 적용에 따른 조사료 생산성 변화 현장조사 및 결과분석(중부 및 남부지방)

Supported by : 농촌진흥청

References

  1. AOAC. 1990. Official methods of analysis(15th ed.). Association & Official Analytical Chemists, Washington DC.
  2. Choi, G.J., Lim, Y.C., Kim, K.Y., Seong, B.R., Kim, M.J., Kim, W.H., Ji, H.C., Lee, J.K., Jeon, B.S., Jung, M.W., Lee, S.H. and Seo, S. 2008. Actual outbreak states of rice black-streaked dwarf virus disease in forage corn field of Korea. Journal of the Korean Society of Grassland and Forage Science. 28:221-228. https://doi.org/10.5333/KGFS.2008.28.3.221
  3. Choi, G.J., Lim, Y.C., Yoon, S.H., Ji, H.C., Lee, S.H., Jung, M.W., Seo, S., Park, H.S., and Kim, K.Y. 2013. Comparison of forage productivity and outbreak rate between corn varieties in field of rice black-streaked dwarf virus(RBSDV) prevalent area. Journal of the Korean Society of Grassland and Forage Science. 33:111-116. https://doi.org/10.5333/KGFS.2013.33.2.111
  4. Choi, G.J., Lim, Y.C., Yoon, S.H., Ji, H.C., Lee, S.H., Jung, M.W., Kim, W.H., Park, H.S., and Kim, K.Y. 2017. Effect of rice black-streaked dwarf virus(RBSDV) infection rate on forage productivity of corn variety in middle district of Korea. Journal of the Korean Society of Grassland and Forage Science. 37:44-49. https://doi.org/10.5333/KGFS.2017.37.1.44
  5. Goering, H.K., and Van Soest, P.J. 1970. Forage fiber analysis. Ag. Handbook. No. 379. ARS. USDA. Washington DC.
  6. Holland, C., Kezar, W., Kautz, W.P., Lazowski, E.J., Mahanna, W.C. and Reinhart, R. 1990. The Pioneer Forage Manual-A Nutritional Guide. Pioneer Hi-Bred International. Inc., Des Moines, IA.
  7. Kim, D.A. 1991. Forage crops. Sunjinmuhwasa. Seoul. pp. 310-320.
  8. Lee, S.M., Kim, B.T., Hwang, J.H., Jeon, B.T., and Moon, S.H. 2007. Effect of plowing frequency and sowing dates on the agronomic characteristics, feed value, weed yield and palatability of silage corn. Journal of the Korean Society of Grassland and Forage Science. 27:109-118. https://doi.org/10.5333/KGFS.2007.27.2.109
  9. MAFRA. 2018. Project of increasing for roughage production base. Ministry of Agriculture, Food and Rural Affairs.
  10. NIAS. 2007. The Korean livestock feeding standard. National Institute Livestock Research Institute, RDA.
  11. RDA. 1988. Chemical analysis of soil. Rural Development Administration.
  12. RDA. 1995. Standard of agriculture research investigation. Rural Development Administration.
  13. SAS. 2002. Statistical analysis system version 9.2. SAS Institute Inc, Cary, NC.
  14. Son, B.Y., Kim, J.T., Song, S.Y., Baek, S.B., Kim, J.K. and Kim, J.D. 2009. Comparison of yield and forage quality of silage corns at different planting dates. Journal of the Korean Society of Grassland and Forage Science. 29:179-186. https://doi.org/10.5333/KGFS.2009.29.3.179
  15. Son, B.Y., Kim, J.T., Lee, J.S., Baek, S.B., Kim, W.H. and Kim, J.D. 2010. Comparison of growth characteristics and yield of silage corn hybrids by planting dates at paddy and upland field. Journal of the Korean Society of Grassland and Forage Science. 30:237-246. https://doi.org/10.5333/KGFS.2010.30.3.237
  16. Son, B.Y., Kim, J.T., Lee, J.S., Baek, S.B., Kim, W.H., Kim, J.D. and Ko, K.H. 2011. Response of growth characteristics and yield of silage corns at different regions. Journal of the Korean Society of Grassland and Forage Science. 31:251-260. https://doi.org/10.5333/KGFS.2011.31.3.251