Library Open Repository

Clomazone dissipation in four Tasmanian topsoils

Downloads

Downloads per month over past year

Cumming, JP and Doyle, RB and Brown, PH (2002) Clomazone dissipation in four Tasmanian topsoils. Weed Science, 50 (2). pp. 405-409. ISSN 0043-1745

[img] PDF
Clomazone_paper_Cumming_etal.pdf | Request a copy
Full text restricted
Available under University of Tasmania Standard License.

Abstract

Clomazone dissipation was examined in four soils in field experiments. Field half-lives were 6 to 59 d (average of four field sites was 35 d) for ferrosol (clay loam), kurosol (loamy sand), sodosol (silt loam), and vertosol (light clay). The Hoerl equation provided a better fit to the measured field concentration at all four sites than did a first-order equation. The order of clomazone dissipation rate was ferrosol>sodosol>kurosol>vertosol. Clomazone desorption varied with soil type, with apparent Kd values of 3.6, 1.7, 1.8, and 2.4 for ferrosol, sodosol, kurosol, and vertosol, respectively. Clomazone residues became more strongly sorbed with time, as indicated by desorption hysteresis, but detectable concentrations were present in all soils 1 yr after application. The data indicate that the potential for carryover injury to crops is greatest in the kurosol and least in the ferrosol.

Item Type: Article
Keywords: Clomazone dissipation, ferrosol, kurosol, sodosol, vertosol, first-order equation, Hoerl equation
Journal or Publication Title: Weed Science
Page Range: pp. 405-409
ISSN: 0043-1745
Identification Number - DOI: 10.1614/0043-1745(2002)050[0405:CDIFTT]2.0.CO;2
Date Deposited: 27 Sep 2007
Last Modified: 18 Nov 2014 03:12
URI: http://eprints.utas.edu.au/id/eprint/551
Item Statistics: View statistics for this item

Repository Staff Only (login required)

Item Control Page Item Control Page