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| Web URL(s): | https://listings.lib.msu.edu/iowat/1989.pdf#page=53
Last checked: 01/10/2017
Requires: PDF Reader |
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| Publication Type:
| Report |
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| Author(s): | Roe, R. G.;
Christians, N. E. |
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| Title: | Soil Percolator Test Results |
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| Source: | 1989 Iowa Turfgrass Research Report. July 1989, p. 49-51. |
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| Publishing Information: | Ames, Iowa: Iowa State University |
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| Keywords: | TIC Keywords: Wetting agents; Soil infiltration; Soil water relations; Soil water movement; Percolation; Potassium; Phosphorus; Poa pratensis; Movements
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| Abstract/Contents: | Treatments were applied on October 12, 1988. Study to determine if the Ross Daniels product, Soil Percolator (R & D number of 88:1117), has an effect in the movement of water and nutrients in the soil. It was compared with an industry standard, the product 'Aqua Gro' liquid by Aquatrols Corporation. The test was conducted on Glade Kentucky bluegrass turf established on a Nicollet (fine-loamy, mixed mesic, Aquic Hapludal) soil with a pH of 6.9, 9.05.ppm phosphorus (P), 98.48 ppm potassium (K), and 2.3% organic matter. Individual treatment cells measured 5 ft by 5 ft and were randomized in a complete-block design with three replications. The turf was mowed at 2 in and water was applied as required. Soil percolator was applied at 1, 2, 4, or 6 ounces per 1000 sq. ft. or 8 ounces per 1000 sq. ft., and Aqua Gro was applied at 8 ounces per 1000 sq. ft. Each plot also received 2 pounds per 1000 sq. ft. and 2 pounds K per 1000 sq. ft. on October 13 followed by 1 inch of irrigation. An additional 2 inches of irrigation was applied in two applications at weekly intervals. A set of soil cores were taken on November 14 and 21. The first set were cut at the soil line, removing the thatch and grass. The second set, include the thatch with the grass cropped to the thatch line. These cores were them tested in the lab using the water percolation test following the methods developed by the United States Golf Association. This equipment tests the rate at which water flows through the soil cores. Soil samples were taken on November 18 for P and K analysis. Five samples per treatment cell were collected from the 2-, 4-, and 6-inch depth. In the first set of core samples, Aqua Gro was the only material to significantly improve water movement as compared with the control. Results of the second set of core samples were highly varialble and no significant differences were observed. There is no significant difference in the level of P retained in the soil. There is an improvement in the level of K retained at the 8 oz/1000 ft2 rate of R & D 88:117. There appears to be little difference in the movement of P through the soil, however the movement of K to the 4- and 6-in depths appears to be enhanced at the 8 oz/1000ft2 rate of R & D 88:117. The Ross Daniels Soil Percolator provided no improvement in water or nutrient movement in the Nicollet soil at the recommended rates for application for this product. When soil Percolator was applied at the 8 oz/1000 ft2, a rate equivalent to the industry standard- Aqua Gro, some improvement in water and K movement was observed, but it showed no advantage over the Aqua Gro. Three graphs are also included showing results obtained from the soil samples. These graphs show the levels of P and K per treatment as well as the levels of P and K at 2-, 4- and 6- inch depths. |
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| Language: | English |
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| References: | 0 |
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| See Also: | Other items relating to: Wetting Agents |
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| Note: | Graphs
Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Roe, R. G., and N. E. Christians. 1989. Soil Percolator Test Results. Iowa Turfgrass Res. Rep. p. 49-51. |
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| Web URL(s):
https://listings.lib.msu.edu/iowat/1989.pdf#page=53
Last checked: 01/10/2017
Requires: PDF Reader |
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MSU catalog number: SB 433 .A1 I55 |
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