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18 June 2019 Advection of Liquid Termiticides within Building Foundation Aggregate Fill
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Abstract

Advection of two liquid termiticides was determined within two different building foundation aggregate fills, ODOT Base Type-A Gravel and Class A-#57 Crushed Rock, after over-the-surface applications. Residues within each aggregate were sampled as two composite soil cores taken in two 5.1-cm incremental partitions to a depth of 10.2-cm after 24 hours, and at 6 and 12 months post-application. Half the test plots were compacted and half remained not compacted. Advection was significantly influenced by aggregate type. Residues within compacted compared with not-compacted aggregates were similar for individual termiti-cides. Some termiticide dispersed completely through the aggregates to reach the soil beneath. Advection resulted in decreasing a.i. concentrations as depth increased within ODOT Base Type-A Gravel fill, with the greatest concentration located in the top 5.1-cm partition, likely due to the fine particle component, with almost no termiticide reaching underlying soil. In contrast, termiticides were more evenly distributed within Class A-#57 Crushed Rock fill, as residue amounts were similar throughout the 10.2-cm depth, with some reaching underlying soil.

© 2018 Kansas Entomological Society
B. M. Kard, C. E. Konemann, K. T. Shelton, C. C. Luper, and M. E. Payton "Advection of Liquid Termiticides within Building Foundation Aggregate Fill," Journal of the Kansas Entomological Society 91(3), 209-222, (18 June 2019). https://doi.org/10.2317/0022-8567-91.3.209
Received: 17 January 2019; Accepted: 8 March 2019; Published: 18 June 2019
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