ISSN:
1365-3180
Source:
Blackwell Publishing Journal Backfiles 1879-2005
Topics:
Agriculture, Forestry, Horticulture, Fishery, Domestic Science, Nutrition
Notes:
Summary. Fluroxypyr-MHE (methylheptyl ester) was hydrolysed to fluroxypyr in soil/water suspensions at rates several thousand times that in distilled, deionized water at similar pH and temperature: the pH 7, 25°C half-life in water was 454days, compared to 2, 5, and 5·5 hours in 1 : 100 soil/water suspensions of a Barnes loam, Catlin silt loam, and Mhoon clay. The catalysed hydrolysis did not occur in decanted, aqueous supernatants of centrifuged Barnes soil suspensions, nor in Barnes soil/water suspensions which had been autoclaved. In soils incubated (26·1°C) at field moist conditions, only 1 to 2% of the fluroxypyr-MHE had not hydrolysed after three days. An extracellular enzyme was suggested as the catalyst.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1111/j.1365-3180.1989.tb01309.x
