Surface application of ammonium thiosulfate fertilizer to reduce volatilization of 1,3-dichloropropene from soil
✍ Scribed by Jianying Gan; J Ole Becker; Frederick F Ernst; Chad Hutchinson; James A Knuteson; Scott R Yates
- Publisher
- John Wiley and Sons
- Year
- 2000
- Tongue
- English
- Weight
- 126 KB
- Volume
- 56
- Category
- Article
- ISSN
- 1526-498X
No coin nor oath required. For personal study only.
✦ Synopsis
Atmospheric emission of the soil fumigant 1,3-dichloropropene (1,3-D) is of environmental concern because of its toxicity and carcinogenicity. Thiosulfate fertilizers have been found to rapidly transform 1,3-D in soil to non-volatile ions which are less toxic. We investigated the use of surface application of ammonium thiosulfate (ATS) for reducing 1,3-D volatilization. In packed soil columns, emission of 1,3-D applied by sub-surface injection decreased with increasing ATS application rate and the amount of water used for delivering ATS. When ATS was applied in 9 mm water at 64 g m À2 , total 1,3-D emission was reduced by 61%. The reduction was 89% when ATS was applied at 193 g m À2 . Bioassays showed that ATS application did not affect the effectiveness of 1,3-D for controlling citrus nematodes. In ®eld plots where a 1,3-D emulsi®ed formulation was applied via sub-surface drip, surface spray of ATS reduced 1,3-D emissions by 50%, and by 71% when the surface was also covered with polyethylene ®lm. ATS application had no effect on the ef®cacy of root-knot nematode control or tomato yields. These results suggest that surface application of thiosulfate fertilizers may be a feasible and effective strategy for minimizing 1,3-D emissions.