Irrigation Frequency for Kentucky Bluegrass (Poa pratensis) Growth

관수빈도에 따른 Kentucky Bluegrass 생육

  • Lee, Sang-Kook (Research Institute for Basic Sciences, Hoseo University)
  • 이상국 (호서대학교 기초과학연구소)
  • Received : 2012.06.12
  • Accepted : 2012.07.04
  • Published : 2012.08.31

Abstract

Kentucky bluegrass (Poa pratensis) is most widely used in golf courses and athletic fields. Weakness of Kentucky bluegrass is shallow root zone and has weak tolerance to shade. One of the biggest disadvantages is high demand of water. Water content is important factor to maintain excellent color and quality of turfgrass. There are two irrigation methods which are 'deep and infrequent (DI)' and 'Light and frequent (LI)'. The objective of the study is to investigate Kentucky bluegrass growth treated by different irrigation frequency. Three irrigation frequency were made; no irrigation, every other day, and weekly. The same amount of water was used between every other day and weekly irrigation except no irrigation. No irrigation mean no artificial water supply and precipitation only. No irrigation treatment produced turfgrass quality lower than acceptable rating of six in July and August. Under the weather condition of 2011, no irrigation could not maintained acceptable turfgrass quality. No significant differences were found for Kentucky bluegrass quality between DI and LI.

Kentucky bluegrass 는 경기장과 골프장의 Tee 나 Fairway 등에 가장 많이 사용이 되는 한지형잔디 초종중의 하나이다. 그러나 Kentucky bluegrass 는 뿌리층이 얕고 그늘에 약한 단점들이 있다. Kentucky bluegrass 의 가장 큰 단점중의 하나는 성장을 위해 수분이 많이 요구되는 초종이다. 올바른 수분관리는 잔디의 시각적 색감과 품질을 유지하기 위해 아주 중요한 요소중의 하나이다. 잔디의 성장을 위해 수분을 공급하는 관수 방법에는 light and frequent (LI) 적은양을 빈번하게 관수하는 방법과, deep and infrequent (DI) 많은양을 필요시에 공급하는 두가지의 방법이 있다. 본 실험은 Kentucky bluegrass 의 생육을 위한 관수빈도의 차이를 알아보기 위해 수행되었다. 실험을 위해 무관수, 매주 4회, 그리고 매주 1회의 3가지 관수방법이 사용되었다. 무관수 처리구의 경우 인위적인 관수는 수행되지 않았으며 Kentucky bluegrass 의 생육을 위해 수분공급은 강수량에 의해서만 이루어졌다. 본 실험결과 2011년 기상조건하에서 강우량에 의존한 무관수는 7,8 월에 최소수용품질을 나타내기 어렵다고 판단되며, 관수빈도에 따른 Kentucky bluegrass 생육의 차이는 나타나지 않는 것으로 나타났다.

Keywords

References

  1. Beard, J. B. 2002. Turf Management for Golf Courses, 2nd Edn. Ann Arbor Press, Chelsea, MI.
  2. Bennett, O. and B. Doss. 1960. Effect of soil moisture level on root distribution of cool-season species. Agron. J. 52:204-7. https://doi.org/10.2134/agronj1960.00021962005200040008x
  3. Biran, I., B. Bravdo, I. Bushkin-Harav, and E. Rawitz. 1981. Water consumption and growth rate of 11 turfgrasses as affected by mowing height, irrigation frequency, and soil moisture. Agron. J. 73:85-90. https://doi.org/10.2134/agronj1981.00021962007300010020x
  4. Christians, N. E. 2011. Fundamentals of turfgrass management. 4th ed. Wiley & Sons Inc. Hoboken, NJ.
  5. Dernoeden, P. H. 2006. Understanding wet wilt. USGA Green Section Record. March/April. 44(2):7-9.
  6. Fry, J. and Huang, B. 2004. Applied turfgrass science and physiology. Wiley, Hoboken, NJ.
  7. Fu, J. and P. H. Dernoeden. 2008. Carbohydrate metabolism in creeping bentgrass as influenced by two summer irrigation practices. J. Am. Soc. Hort Sci. 133(5): p.678-683.
  8. Jiang, H., J. Fry, and N. Tisserat. 1998. Assessing irrigation management for its effects on disease and weed levels in perennial ryegrass. Crop Sci. 38:440-445. https://doi.org/10.2135/cropsci1998.0011183X003800020028x
  9. Johnson, P. G. 2003. The influence of frequent or infrequent irrigation on turfgrasses in the cool-arid west. USGA Turfgrass and Environmental Research Online. March 15. 2(6): pp. 1-8.
  10. Jordan, J., R. White, D. Vietor, T. Hale, J. Thomas, and M. Engelke. 2003. Effect of irrigation frequency on turf quality, shoot density, and root length density of five bentgrass cultivars. Crop Sci. 43:282-87. https://doi.org/10.2135/cropsci2003.0282
  11. Karnok, K. J. and Tucker. K. A. 1999. Dry spots return with summer. Golf Course Management. 67(5):49-52.
  12. Madison, J. and R. Horgan. 1962. Extraction of soil moisture by Merion and other cultural operations. Agron. J. 54;157-60. https://doi.org/10.2134/agronj1962.00021962005400020020x
  13. Madison, J. and R. Horgan. 1962. Extraction of soil moisture by Merion and other cultural operations. Agron. J. 54;157-60. https://doi.org/10.2134/agronj1962.00021962005400020020x
  14. Melvin, B. P. and J. M. Vargas. 1994. Irrigation frequency and fertilizer type influence necrotic ring spot of Kentucky Bluegrass. HortScience. September. 29(9): pp. 1028-1030.
  15. Qian, Y. and J. Fry. 1996. Irrigation frequency and turfgrass performance: Studies find advantages to deep, infrequent irrigation of zoysiagrass. Golf Course Management. 64(5): pp. 49-51.
  16. Starrett, S, N. Christians, and T. Austine. 1996. Soil processes and chemical transport, movement of pesticides under two irrigation regimes applied to turfgrass. J. Env. Qual. 25:566-571.
  17. Turgeon, A. J. 1991. Turfgrass Management, Third Edition. Prentice Hall, Englewood Cliffs, NJ.