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| Publication Type:
| Report |
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| Material Type: | Dissertation |
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| Monographic Author(s): | Skrdla, Willis H. |
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| Author Affiliation: | Purdue University |
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| Monograph Title: | The Establishment and Maintenance of Turf on Stabilized Granular Materials, 1949. |
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| Publishing Information: | Ph.D. Thesis: Purdue University |
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| # of Pages: | 185 |
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| Collation: | [10], 175 pp. |
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| Keywords: | TIC Keywords: Soil stabilization; Compaction; Airfields; Establishment
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| Abstract/Contents: | "A study was made of a number of factors involved in establishing turf on stabilized granular materials. Fertility, grass species, root penstration, pH, varying binder soil content, and effect of turf on stability were the factors studied in the greenhouse and in the field. Nitrogen and phosphorus availability were shown to be most critical. Potash was required, but lower rates than for nitrogen and phosphorus were suffiecient. Nitrogen was very readily leached from stabilized aggregate and top-dressings were recommended. Ureaform showed promise of releasing nitrogen over a long period of time when incorporated into the aggregate. Since the granular materials tested were highly calcareous, heavy rates of superphosphate (at least 320 lbs. P2O5 per acre) were recommended. Top-dressing with phosphorus was shown to be ineffective in increasing the amount of absorbed phosphorus below 1 inch. Rock phosphate at the rate of 5 tons per acre finished only one-half as much absorbed phosphorus as 800 lbs. 20% superphosphate. An indication was shown that a certain degree of minor element deficiency existed in the gravel aggregate studied. It was not determined what these elements were, nor the extent of deficiency. The results of greenhouse work show that turf decreased the stability of some aggregates more than others. It did not affect the stability of trap rock as much as limestone or gravel. Trap rock retained a high degree of stability in spite of the turf. An analysis of root penetration showed that penetration in trap rock was as deep as in sand or gravel aggregates and deeper than in crushed limestone. It was shown that with ample fertilizty, turf can be grown on aggregate with as little as 4.5% binder soil. The yield of grass increased with each added increment of soil above 4.5%, but satisfactory turf was maintained on aggregates with as little as 7.0 to 10.5% binder soil. The pH of the gravel and limestone aggregates used in the study was between 8.0 and 8.5. An application of 3000 lbs. of sulfur per acre lowered the pH by 0.5 pH unit for one year on gravel aggregate. Alta fescue was shown to appear very promising for use on stabilized granular materials. Its fasr growth habits and its ability to persist under conditions of low fertility made it appear desirable for such purposes. Kentucky bluegrass and Chewings fescue also made satisfactory growth on this material, but their finer qualities and slower growth habits put them second choice to Alta fescue. Indications were that they are not as wear resistant as Alta." |
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Library of Congress
Subject Headings: | Limestone; Gravel; Growth substances; Fertilizers; Soils; Agronomy; Horticulture; Soil sciences; Agronomie; (Grasses. Growth (physiology)); (Soil mechanics. Grasses); Plants(botany); Stabilization; Civil engineering; Agronomy, Horticulture and Aquiculture; Soil Mechanics |
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| Language: | English |
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| References: | 56 |
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| See Also: | See also related book, Final Report on Phase I of Turf Runway Investigations, 1948, R=279835. R=279835
See also related item, The Establishment and Maintenance of Turf on Stabilized Granular Material, 1949, R=116358. R=116358 |
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| Note: | "Dissertation/thesis number: 0170288"
"ProQuest document ID: 301795603"
"A Thesis Submitted to the Faculty of Purdue Univeristy"
"In Partial Fulfillment of the Requirements for the Degree of Doctor of Philosophy"
"August, 1949"
Includes "List of tables and figures"; pp. [4]-[10]
Includes "Acknowledgements"; p. 3
Includes "Acknowledgement of engineering data presented"; p. 4
Includes "Foreword"; pp. 5-6
Includes "Vita"; p. 174
Pictures, color & b/w
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Skrdla, Willis H. 1949. The Establishment and Maintenance of Turf on Stabilized Granular Materials. Ph.D. Thesis: Purdue University. |
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