H. Dijk
1974
Citations
2
Influential Citations
39
Citations
Quality indicators
Journal
Agro-ecosystems
Abstract
Abstract A review is given of the results obtained from a recent study of the fate of cis- and trans-1,3-dichloropropenes, used as nematocides, in buffer solutions and in soils. Rates of degradation and “half lives”, as affected by temperature, of the parent compounds and of the chloroallyl alcohols, formed by hydrolysis, were deduced from disappearance rates and from chloride release. The dichloropropenes disappear in sandy soils at 15–20°C (closed containers) at a rate of 2–3.5% per day. In clay-containing soils this rate is mostly considerably higher (up to about 25% per day at 20°C). The chloroallyl alcohols are rapidly biodegraded in the soil; for the cis isomer in clay-containing soils rates were found of 20–60% per day at 15°C, for the trans isomer the rates were even about three times higher. After an intitally more rapid release of Cl − this release slows down to about 3% per week. The available data point to some process in the soil, other than hydrolysis, which impedes degradation of part of the dichloropropene fumigant mixture.