Research article - Peer-reviewed, 2003
Comparison of triticonazole dissipation after seed or soil treatment
Borjesson E, Stenstrom J, Johnsson L, Torstensson LAbstract
This study examined the long-term fate of the fungicide triticonazole (TTZ; 5-[(4-chlorophenyl)methylene]-2,2-dimethyl-1-(1H-1,2,4-triazol-1-ylmethyl)cyclopentanol) applied at a normal field dose (8.9 g ha(-1)) via seed treatment, which is the normal alternative in practice. The TTZ was applied to wheat (Triticum aestivum L.) grains as a disinfectant before sowing or spraying on bare soil for comparison and reference to the seed treatment. The seeds were germinated and grown in pots in a greenhouse at 22 +/- 3degreesC. The dissipation of TTZ was studied by gas chromatography-mass spectrometry (GC-MS) analysis of the residues every fourth week until no TTZ could be detected. The recovery for analysis of TTZ in soil was between 98 and 131%, and the quantification level was 0.002 mg kg(-1). After 56 d of incubation, 20 and 28% of the TTZ applied remained in the soil and seed treatments, respectively, with corresponding half-lives of 27 and 29 d. The microbial biomass initially decreased in the soil treatment but had recovered after 56 d. The active part of the biomass was not changed during the experimental time. Thus, with respect to dissipation of TTZ and its effect on the soil microbial biomass and activity, no long-lasting difference between soil and seed treatments could be foundPublished in
Journal of Environmental Quality2003, volume: 32, number: 4, pages: 1258-1261
Publisher: AMER SOC AGRONOMY
Authors' information
Swedish University of Agricultural Sciences, Department of Microbiology
Börjesson, Elisabet
Swedish University of Agricultural Sciences, Department of Microbiology
Johnsson, Lennart
Torstensson, Lennart
Swedish University of Agricultural Sciences, Department of Microbiology
UKÄ Subject classification
Environmental Sciences related to Agriculture and Land-use
URI (permanent link to this page)
https://res.slu.se/id/publ/287