모래지반에서 켄터키블루그래스의 성장과 조성에 미치는 질소의 유형별 효과 Evaluation of Various Slow-release Nitrogen Sources for Growth and Establishment of Poa pratensis on Sand-based Systems원문보기
질소는 색감과 품질을 유지하기 위한 잔디의 성장에 필요한 17가지 필수 영양성분중에 하나이다. 완효성 비료는 일정한 양의 질소 영양성분을 오랜기간 동안 제공하기 위해서 개발이 되었고 모래지반에서 특히 더 잘 용 탈되는 질소의 양을 줄이기 위해서 사용이 된다. 이 실험의 목적은 다양한 완효성 비료가 다른 비율로 시비 되었을때 잔디조성에 어떻게 영향을 미치는 지에 대해서 조사하였다. 총 6가지 질소비료가 실험되었으며 켄터키블루그래스가 파종과 뗏장을 위해 사용이 되었다. 뗏장으로 조성된 실험구가 파종으로 조성된 실험구 보다 182에서 518 g 예지물을 더 생산하였다. 파종으로 조성된 실험구중에서는 밀오거나이트가 가장 많은 뿌리의 건중량을 생산하였다. 파종과 뗏장은 잔디의 성장 기간이 다르기 때문에 예지물의 양과 뿌리의 건중량에서 차이가 난다. 본 실험의 결과에 따르면 밀오거나이트가 다른 5가지의 질소비료 보다 예지물의 생산이 적었으며 지하부의 성장이다 좋았으므로 켄터키블루그래스가 처음 조성이 될때는 밀오거나이트가 권장이 된다.
질소는 색감과 품질을 유지하기 위한 잔디의 성장에 필요한 17가지 필수 영양성분중에 하나이다. 완효성 비료는 일정한 양의 질소 영양성분을 오랜기간 동안 제공하기 위해서 개발이 되었고 모래지반에서 특히 더 잘 용 탈되는 질소의 양을 줄이기 위해서 사용이 된다. 이 실험의 목적은 다양한 완효성 비료가 다른 비율로 시비 되었을때 잔디조성에 어떻게 영향을 미치는 지에 대해서 조사하였다. 총 6가지 질소비료가 실험되었으며 켄터키블루그래스가 파종과 뗏장을 위해 사용이 되었다. 뗏장으로 조성된 실험구가 파종으로 조성된 실험구 보다 182에서 518 g 예지물을 더 생산하였다. 파종으로 조성된 실험구중에서는 밀오거나이트가 가장 많은 뿌리의 건중량을 생산하였다. 파종과 뗏장은 잔디의 성장 기간이 다르기 때문에 예지물의 양과 뿌리의 건중량에서 차이가 난다. 본 실험의 결과에 따르면 밀오거나이트가 다른 5가지의 질소비료 보다 예지물의 생산이 적었으며 지하부의 성장이다 좋았으므로 켄터키블루그래스가 처음 조성이 될때는 밀오거나이트가 권장이 된다.
Nitrogen (N) is one of the most important nutrients among 17 essential nutrients for maintaining turfgrass color and quality. The slow release fertilizers were initially developed to provide a more consistent release of nitrogen over a longer period and are often used to decrease leaching potential ...
Nitrogen (N) is one of the most important nutrients among 17 essential nutrients for maintaining turfgrass color and quality. The slow release fertilizers were initially developed to provide a more consistent release of nitrogen over a longer period and are often used to decrease leaching potential from sandy soils. The goal of this study is to determine if various slow release N sources affect the rate at which turfgrass establishes. Six nitrogen sources were evaluated; Nitroform (38-0-0), Nutralene (40-0-0), Organiform (30-0-0), Sulfur coated urea (SCU, 37-0-0), urea (46-0- 0), and Milorganite (6-0-0). The root zone media was seeded and sodded with 'Limousine' Kentucky bluegrass (Poa pratensis L.). Sodded pots produced 182 to 518 g more clipping dry weight than seeded pots. Among seeded pots, Milorganite produced greater amount of root dry weight than any other N sources. Because the period of turfgrass growth is different between sodded and seeded plots, there were differences on clipping yield and root growth. Overall, high N rate had turf color greater than acceptable color of 6 among seeded pots throughout the study. However, low N rate didn't produce acceptable turf color throughout the study. Based on the result of this tudy, ilorganite would be ecommended for new establishment of Kentucky bluegrass an urea with less clipping yield which can lead to reduce abor.
Nitrogen (N) is one of the most important nutrients among 17 essential nutrients for maintaining turfgrass color and quality. The slow release fertilizers were initially developed to provide a more consistent release of nitrogen over a longer period and are often used to decrease leaching potential from sandy soils. The goal of this study is to determine if various slow release N sources affect the rate at which turfgrass establishes. Six nitrogen sources were evaluated; Nitroform (38-0-0), Nutralene (40-0-0), Organiform (30-0-0), Sulfur coated urea (SCU, 37-0-0), urea (46-0- 0), and Milorganite (6-0-0). The root zone media was seeded and sodded with 'Limousine' Kentucky bluegrass (Poa pratensis L.). Sodded pots produced 182 to 518 g more clipping dry weight than seeded pots. Among seeded pots, Milorganite produced greater amount of root dry weight than any other N sources. Because the period of turfgrass growth is different between sodded and seeded plots, there were differences on clipping yield and root growth. Overall, high N rate had turf color greater than acceptable color of 6 among seeded pots throughout the study. However, low N rate didn't produce acceptable turf color throughout the study. Based on the result of this tudy, ilorganite would be ecommended for new establishment of Kentucky bluegrass an urea with less clipping yield which can lead to reduce abor.
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문제 정의
It is also not clear if high rates of slow release N sources can be mixed into the sand mix to improve turf establishment. The goal of this study is to determine if various slow release N sources affect the rate at which turfgrass establishes.
제안 방법
Each fertilizer, except urea, was mixed into the top 5 cm of the root zone media at rate of 10 and 20 g of N m-2, respectively. Urea treatment was applied at the surface of the media at 0.8 and 1.6 g of N m-2 week-1 giving a total of 10 and 20 g of N m-2 during a 12 weeks study period, respectively. The root zone media was seeded and sodded with ‘Limousine’ Kentucky bluegrass (Poa pratensis L.
대상 데이터
The experimental design was a randomized complete block design with three replications. The data were analyzed using the t-test procedures and mean separation was performed by standard error of differences (SED) method of the Statistical Analysis System (SAS, 1987).
Local mason sand that meets USGA specification was used as the growing media. The sand materials were packed into a 7.6 cm diameter PVC pipe lined with 6.9 cm diameter clear plastic tubing. The plastic liner was removed for viewing and replaced in the PVC tubes.
Water was applied daily thereafter according to the ET requirement. The study was conducted in the research greenhouse at the Iowa State University Horticulture Department, Ames, Iowa, US. Turfgrass color was measured by visual evaluation every week using a scale of 1 to 9 (1=straw brown, 6=acceptable, and 9=dark green).
데이터처리
The experimental design was a randomized complete block design with three replications. The data were analyzed using the t-test procedures and mean separation was performed by standard error of differences (SED) method of the Statistical Analysis System (SAS, 1987).
성능/효과
Mean root length and root dry weight of ‘Limousine’ Poa pratensis L. with factors of N sources and type of establishment averaged over replications and both levels of N rates at the end of the study.
참고문헌 (11)
Bowman, D.C., J.L. Paul, and R.M. Carlson. 1988. A method to exclude nitrate from Kjeldahl digestion of plant tissues. Commun. Soil Sci. Plant Anal. 19:205-213.
Brown, K. W., J. C. Thomas, and R. L. Duble. 1982. Nitrogen source effect on nitrate and ammonium leaching and runoff from greens. Agron. J. 74:947-950.
Exner, M. E., M. E. Burbach, D. G. Watts, R. C. Sherman, and R.F. Spalding. 1991. Deep nitrate movement in the unsaturated zone of a simulated urban lawn. J. Environ. Qual. 20:658-662
Hesketh, E. S., R. J. Hull, and A. J. Gold. 1995. Estimating non-gaseous nitrogen losses from established turf. J. Turf. Manage. 1:17-30.
Liu, H., R.J. Hull, and D.T. Duff. 1997. Comparing cultivars of three cool-season turfgrasses for soil water NO3 concentration and leaching potential. Crop Sci. 37:526-534.
Miltner, E. D., B. E. Branham, E. A. Paul, and P. E. Rieke. 1996. Leaching and mass balance of 15N-labeled urea applied to a Kentucky bluegrass turf. Crop Sci. 36:1427-1433.
Nelson, K. E., A. J. Turgeon, and J. R. Street. 1980. Thatch influence on mobility and transformation of nitrogen carriers applied to turf. Agron. J. 72:487-492.
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