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| DOI: | 10.2134/jeq2004.0433 |
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| Web URL(s): | https://dl.sciencesocieties.org/publications/jeq/articles/34/5/1573
Last checked: 11/07/2016
Access conditions: Item is within a limited-access website
https://dl.sciencesocieties.org/publications/jeq/pdfs/34/5/1573
Last checked: 11/08/2016
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| Publication Type:
| Refereed |
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| Author(s): | Ingram, C. W.;
Coyne, M. S.;
Williams, D. W. |
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| Author Affiliation: | Department of Plant and Soil Sciences, University of Kentucky, Lexington, Kentucky |
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| Title: | Effects of commercial diazinon and imidacloprid on microbial urease activity in soil and sod |
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| Section: | Organic compounds in the environment
Other records with the "Organic compounds in the environment" Section
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| Source: | Journal of Environmental Quality. Vol. 34, No. 5, September/October 2005, p. 1573-1580. |
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| Publishing Information: | Madison, Wisconsin: American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America |
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| # of Pages: | 8 |
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| Keywords: | TIC Keywords: Diazinon; Imidacloprid; Microbial activity; Urease; Insecticides
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| Abstract/Contents: | "Received for publication November 15, 2004. Diazinon [O,O-diethyl O-2-isopropyl-6-methyl(pyrimidine-4-yl) phosphorothioate] and imidacloprid [1-(1-[6-chloro-3-pyridinyl]methyl)-N-nitro-2-imidazolid are applied to lawns for insect control simultaneously with nitrogenous fertilizers such as urea, but their potential effect on urease activity and nitrogen availability in turfgrass management has not been evaluated. Urease activity in enzyme assays, washed cell assays, and soil slurries was examined as a function of insecticide concentration. Intact cores from field sites were used to assess the effect of insecticide application on urease activity in creeping bentgrass (Agrostis palustris Huds.) and bluegrass (Poa pratensis L.) sod. Bacterial urease from Bacillus pasteurii and plant urease from jack bean [Canavalia ensiformis (L.) DC.] were unaffected by the insecticides. Both insecticides inhibited the growth of Proteus vulgaris, a urease-producing bacterium, but only diazinon significantly reduced urease activity in washed cells; neither insecticide inhibited urease activity in sonicated cells. Neither diazinon nor imidacloprid inhibited urease activity in Woolper soil (fine, mixed, mesic Typic Argiudoll) slurries, but diazinon slightly inhibited urease activity in Maury soil (fine, mixed, semiactive, mesic Typic Paleudalf) slurries. Imidacloprid had no effect on urease activity in creeping bentgrass or bluegrass sod at up to 10 times the commercial application rate. Diazinon briefly, but significantly, reduced urease activity in bluegrass sod. Co-application of imidacloprid and urea appears to be benign with respect to urease activity in soil and sod. Diazinon, in contrast, appears to have a significant, short-term, inhibitory effect on the microbial urease-producing community, but that effect depends on soil type." |
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| Language: | English |
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| References: | 23 |
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| Note: | Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Ingram, C. W., M. S. Coyne, and D. W. Williams. 2005. Effects of commercial diazinon and imidacloprid on microbial urease activity in soil and sod. J. Environ. Qual. 34(5):p. 1573-1580. |
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| DOI: 10.2134/jeq2004.0433 |
| Web URL(s):
https://dl.sciencesocieties.org/publications/jeq/articles/34/5/1573
Last checked: 11/07/2016
Access conditions: Item is within a limited-access website
https://dl.sciencesocieties.org/publications/jeq/pdfs/34/5/1573
Last checked: 11/08/2016
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: b2225072a |
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