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| Web URL(s): | http://agops.ucr.edu/turf/publications/ctc/ctc36_1234.pdf#page=7
Last checked: 01/24/2014
Requires: PDF Reader
Notes: Item is within a single larger file |
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| Publication Type:
| Professional |
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| Author(s): | Anonymous |
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| Title: | Effect of nitrogen fertilization on earthworms, microarthropods in turf |
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| Source: | California Turfgrass Culture. Vol. 36, No. 1-4, 1966[1986], p. 7. |
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| Publishing Information: | Riverside, CA: Federated Turfgrass Council of California/University of California Cooperative Extension |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Nitrogen; Fertilization; Oligochaeta; Microarthropods; Poa pratensis; Acidification; Thatch
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| Abstract/Contents: | SUMMARY: "Results from a University of Kentucky field study indicate that when nitrogen fertilizer is applied to Kentucky bluegrass at rates sufficient to cause soil acidification, populations of earthworms and other invertebrates that decompose thatch and aid in nutrient recycling can be severely reduced. Purpose of the study was to investigate the possible association between prolonged nitrogen fertilization, thatch development and changes in population levels of invertebrates involved in decomposition processes in Kentucky bluegrass. Six rates of ammonium nitrate fertilizer ranging from 0 to 25 g of nitrogen per square meter were applied annually for seven years to replicated plots of 'Kenblue' Kentucky bluegrass growing on a Maury silt loam. The Kentucky scientists report these findings from their study: Increasing the rate of nitrogen fertilization resulted in a significant decline in soil and thatch pH and in exchangeable calcium and potassium and caused a significant increase in thatch. Regression analyses showed a highly significant linear decrease in earthworm density and biomass as annual rates of nitrogen fertilization increased. Springtails (Collembolar) were more abundant at an intermediate fertilizer rate, whereas populations of an un-identified acarid mite were unaffected by nitrogen fertilization. Oribatid mites were the most abundant arthropod decomposers in the turf. Each of the seven oribatid mite species differed in its response to nitrogen fertilization. Thatch accumulation was negatively correlated with earthworm density and biomass, although other factors probably also contributed to thatch development." |
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| Language: | English |
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| References: | 0 |
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| See Also: | See also full article, "Effect of N fertilization on earthworm and microarthropod populations in Kentucky bluegrass turf," Agronomy Journal, 77(3) May/June 1985, p. 367-372, R=4996. R=4996 |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Anonymous. 1966[1986]. Effect of nitrogen fertilization on earthworms, microarthropods in turf. Calif. Turfgrass Cult. 36(1-4):p. 7. |
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| Web URL(s):
http://agops.ucr.edu/turf/publications/ctc/ctc36_1234.pdf#page=7
Last checked: 01/24/2014
Requires: PDF Reader
Notes: Item is within a single larger file |
| 
MSU catalog number: SB 433 .A1 C2 |
| Find from within TIC:
Digitally in TIC by file name: caltc1986No1-4 |
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