Full TGIF Record # 219427
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Web URL(s):https://listings.lib.msu.edu/nttfd/1951.pdf#page=41
    Last checked: 01/16/2017
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Publication Type:
Content Type:Abstract or Summary only
Author(s):Harper, Jack
Author Affiliation:Graduate Student, Pennsylvania State College, State College, Pennsylvania
Title:[Research set-up of four moisture levels and five compaction levels]
Meeting Info.:October 7-9, 1951
Source:Proceedings of National Turf Field Days. 1951, p. 41-42.
# of Pages:2
Publishing Information:West Point, Pennsylvania: West Point Lawn Products
Keywords:TIC Keywords: Aerification; Compaction; Evaluations; Research plots; Soil moisture
Abstract/Contents:"As Professor Musser indicated, most of you are familiar with the set-up that I have up there at the present time sponsored by the U. S. Golf Association Green Section. The project started in 1947 and Jim Watson had it about three years and I took over in 1949. For those of you who don't know the set-up, we have four moisture levels and five compaction levels. The moisture levels are what we call saturation, field capacity, "as needed" and the last one is dry or natural rainfall. The first of the compaction levels is no compaction. Then we have two levels at which we use a roller which applies about 15 pounds pressure to the square inch. One of these treatments is rolled once a week and another is rolled twice a week. Then for heavier compaction we are using rollers which deliver about 60 pounds pressure to the square inch and again one series twice a week. The newest addition to it has been aerification which was carried out this spring. In doing this we took all the plots that we had and divided them in half, aerifying one half and continuing the regular treatments on the other half. The moisture and compaction treatments run at right angles to each other so that there is every possible combination. After aerifying in the spring I applied Super-phosphate to give about for pounds of P205 to the thousand and about a month later I took soil samples at one inch intervals and went down to six inches. I ran the Truog determination on phosphorus on the samples. Although I don't have the data analyzed yet, there showed a definite trend toward more phosphorus down at 4, 5 or 6 inches in the aerified plots than there is in the no aerification plots. Some of the other data that I have taken this year and haven't had time to analyze yet includes clover counts, point quadrat counts for population, crabgrass counts, the phosphorus samples mentioned before and penetrometer studies to determine the relative degree of compaction. We weren't satisfied that the penetrometer readings would be enough on compaction so I have also been taking volume weights which we will try to correlate with the penetrometer and at the present time I am working on X-ray spectrometer samples."
Note:This item is an abstract only!
ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Harper, J. 1951. [Research set-up of four moisture levels and five compaction levels]. Proc. Natl. Turf Field Days. p. 41-42.
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    Last checked: 01/16/2017
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