Pest Management Science (2000) 56, 264-270

Jianying Gan, J. Ole Becker, Frederick F. Ernst, Chad Hutchinson, James A. Knuteson and Scott R. Yates (2000)
Surface application of ammonium thiosulfate fertilizer to reduce volatilization of 1,3-dichloropropene from soil
Pest Management Science 56 (3), 264-270
Abstract: 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^-2, total 1,3-D emission was reduced by 61%. The reduction was 89% when ATS was applied at 193 g m^-2. Bioassays showed that ATS application did not affect the effectiveness of 1,3-D for controlling citrus nematodes. In field plots where a 1,3-D emulsified 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 film. ATS application had no effect on the efficacy 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.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Database assignments for author(s): J. Ole Becker

Research topic(s) for pests/diseases/weeds:
health/environmental effects of pesticides
control - general

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Meloidogyne incognita	Tomato (Solanum lycopersicum)
	Tylenchulus semipenetrans