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| Publication Type:
| Report |
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| Author(s): | Stowell, Larry;
Davies, Raymond;
Duffin, Jim;
Martinez, John;
McIntyre, Daniel;
Parsons, Don;
Phillips, Mark;
Sinclair, Steve;
Yenny, Reed;
Zahrte, David |
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| Author Affiliation: | Stowell: Editor, PTRI Turfgrass Research Report, 1995. Davies: Virginia Country Club. Duffin: Los Amigos Golf Course. Martinez: Arrowhead Country Club. McIntyre: Antelope Valley Country Club. Parsons: Old Ranch Country Club. Phillips: Laguna Hills Country Club. Sinclair: Woodland Hills Country Club. Yenny: Mesa Verde Country Club. Zahrte: Santa Ana Country Club. |
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| Title: | Root zone sand survey |
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| Section: | Soil, Water and Tissue Analyses
Other records with the "Soil, Water and Tissue Analyses" Section
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| Source: | PTRI Turfgrass Research Report. 1995, p. 42-48. |
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| Publishing Information: | San Diego, CA: PACE Turfgrass Research Institute |
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| # of Pages: | 7 |
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| Abstract/Contents: | "The objective of this study was to determine the range of soil particle sizes found in golf course greens from Southern California and to gain a greater understanding of the nature of Southern California root zone sands. A particle size distribution measure (PS) was developed to help characterize root zone sands. The PS value provides a single number that describes the range of particle sizes that comprise the root zone sand. A large PS (>1.2) indicates a higher composition of medium sand particles that is desirable. A small PS (<0.6) indicates a higher composition of smaller particles that is undesirable. The PS value was found to be significantly correlated with a number of other soil factors including organic matter content, percolation rate, bulk density, phosphorous, calcium, magnesium, potassium sodium, boron, iron, copper and interestingly, the age of the green. All of the significant correlations with chemical composition and age of the soil were negative. A negative correlation means a large PS value sand will hold lower levels of nutrients. This relationship is expected and it is well known that higher sand content soils hold less nutrients than finer textured soils. The relationship between PS and age of the greens suggests that the greens are constructed using high sand content materials but the root zone degrades into lower quality finer soils after years of use and management. The reduction in PS may result from decomposition of the materials or addition of fine particles during management or from contaminants in irrigation water. Based upon these results, some preliminary values have been identified to help understnd the aging of greens in Southern California. For example, the correlations suggest that the intitial percolation rate of materials used to construct Southern California greens is about 20 inches per hour. The initial PS value for new greens is about 1.6. Several other critical age points were also estimated using the PS model. For example, accelerated percolation rates, greater than 12 inches per hour, are desired in the intensively irrigated Southern California region. Based upon the PS and age relationship, a green may drop from the initial 20 inches per hour to 12 inches per hour in about 13 years. The critical low limit of 6 inches per hour percolation rate minimum for a USGA specification green will be reached in 23 years and an unacceptable percolation rate of 2 inches per hour will be attained in 30 years. These values suggest that after about 13 years of use, the root zone sand will no longer percolate adequately to satisfy the needs of golf play in Southern California. The percolation rate information above does not take into consideration infiltration or drainage problems that will greatly influence green performance. Infiltration and drainage will require separate study. The PS values and extrapolated years to reconstruction presented here are used to help superintendents understand the physical changes that take place in the root zone as a green ages. In the future, the PS value may be used to help identify management practices that halt or reverse the drop in PS that normally occurs during the life of a Southern California golf course green." |
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| Language: | English |
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| References: | 4 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Stowell, L., R. Davies, J. Duffin, J. Martinez, D. McIntyre, D. Parsons, et al. 1995. Root zone sand survey. Turfgrass Res. Rep. p. 42-48. |
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MSU catalog number: SB 433 .P87 |
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