ISHS Acta Horticulturae 255: III International Symposium on Soil Desinfestation
ACCELERATED DEGRADATION OF 1,3-DICHLOROPROPENE |
| Authors: | G. Lebbink, B. Proper, A. Nipshagen |
| Abstract:
Soil disinfestation with 1,3-dichloropropene is a common practice in the potato producing areas of The Netherlands. It is one of the methods used to control the potato-cyst nematode. In field experiments with continuous potato cropping it was found that sustained annual applications of 1,3-dichloropropene led to insufficient control of Globodera rostochiensis. In laboratory experiments with these 'problem' soils, 1,3-dichloropropene was observed to disappear rapidly. This did not occur when the soil was sterilized before the chemical was applied, which indicates that a biological factor was involved. A bacterium was isolated from this soil which was found to decompose 1,3-dichloropropene, using it as its sole carbon and energy source. The bacterium was identified as a Pseudomonas sp. More information about the occurrence and persistence of this organism and its decomposing capacity is needed, so that 1,3-dichloropropene can be used more selectively and responsibly. Some results of the effect of metham-sodium, the second most frequently used nematocide in The Netherlands, on the decomposing capacity of Pseudomonas are also presented. | |
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