ISSN:
1432-0703
Source:
Springer Online Journal Archives 1860-2000
Topics:
Energy, Environment Protection, Nuclear Power Engineering
,
Medicine
Notes:
Abstract Tests were conducted with the synthetic growth regulator chlorflurenol-methyl to investigate its rate of degradation in soil, leaching behavior, and possible side-effects on the soil microflora and on soil physiological processes. With two sandy soils (Ct=1.0 and 2.58%) which were treated with 11.35 mg kg−1 chlorflurenol-methyl (∼-2.8 kg a.i. ha−1), over 90% of the compound disappeared within 4 to 8 days. The degradation products were 2-chloro-9-hydroxyfluorene-9-carboxylic acid and 2-chlorofluorenone, which undergo further decomposition. In leaching tests with three sandy soils (Ct =0.69, 1.0 and 2.58%), chlorflurenol-methyl was not washed from the soil; however, with one soil (0.69% C), very small residues were observed in the effluent identified as 2-chlorofluorenone. In sideeffects experiments with a parabrown (Ct=1.26%) and a chernozem soil (Ct=2.3%), which were treated with 1 and 10 mg kg−1 chlorflurenolmethyl, no persistent inhibition of anaerobic or aerobic nitrogen fixation (C2H2-reduction) was detected. Ammonification, nitrification, and mineralization of soluble starch were also not influenced. The mineralization of cellulose in compost soil (Ct=13.59%) was temporarily delayed; however, this delay was later compensated for by a higher mineralization rate. The colonization density of fungi on soil particles and the numbers of bacteria, actinomycetes, and fungi were not negatively influenced. Chlorflurenol-methyl does not significantly influence these microbiological processes and populations in the soil.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF01054895
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