Effects of soil factors on dimethyl disulfide desorption and the risk of phytotoxicity to newly-planted seedlings
Dimethyl disulfide (DMDS) is a relatively new soil fumigant used in agro-industrial crop production to control soil-borne pests that damage crops and reduce yield. The emissions of DMDS after fumigation reduce soil concentrations thus reducing the risk of phytotoxicity to newly planted crops. Howeve...
| Main Authors: | , , , , , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Elsevier
2023-09-01
|
| Series: | Ecotoxicology and Environmental Safety |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0147651323008175 |
| _version_ | 1797744155066105856 |
|---|---|
| author | Xiujun Tang Aocheng Cao Yi Zhang Xinhua Chen Anmin Guo Baoqiang Hao Jin Xu Wensheng Fang Dongdong Yan Yuan Li Haiqun Cao Qiuxia Wang |
| author_facet | Xiujun Tang Aocheng Cao Yi Zhang Xinhua Chen Anmin Guo Baoqiang Hao Jin Xu Wensheng Fang Dongdong Yan Yuan Li Haiqun Cao Qiuxia Wang |
| author_sort | Xiujun Tang |
| collection | DOAJ |
| description | Dimethyl disulfide (DMDS) is a relatively new soil fumigant used in agro-industrial crop production to control soil-borne pests that damage crops and reduce yield. The emissions of DMDS after fumigation reduce soil concentrations thus reducing the risk of phytotoxicity to newly planted crops. However, the factors affecting the desorption of DMDS from soil are unclear. In our study, the desorption characteristics of DMDS from soil were measured in response to continuous ventilation. The degradation of DMDS in soil was examined by thermal incubation. The phytotoxic response of newly-planted cucumber (Cucumis sativus) seedlings to DMDS residues was measured by a sand culture experiment. The results showed DMDS desorption and degradation rates fit a first-order model; that 92% of the DMDS desorption occurred in the first hour after fumigant application; and that residue concentrations in the soil at the end of the ventilation period were unlikely to be phytotoxic to newly-planted cucumber seedlings. By the third day of ventilation, the average desorption rate (ADR) of DMDS in Wenshan soil was 4.0 and 3.6 times, respectively, faster than that in Shunyi and Suihua soils and the ADR of DMDS in soil decreased by 40.0% when the soil moisture content increased from 3% to 12% (wt/wt). Moreover, within one hour of ventilation, the ADR of DMDS in soil decreased by 20.1% when the soil bulk density increased from 1.1 to 1.3 g cm-3. The degradation of DMDS in soil, however, was mostly influenced by soil type and moisture content. A slow degradation rate resulted in a high initial desorption concentration of DMDS in soil. Our results indicated that DMDS desorption from soil in response to continuous ventilation was affected by the soil type, moisture content and bulk density. Rapid degradation of DMDS in soil will lower the risk of phytotoxic residues remaining in the soil and reduce emissions during the waiting period. Acceleration of emissions early in the waiting period by managing soil moisture content or increasing soil porosity may shorten the duration of emissions. Alternatively, soil extraction technology could be developed to recover and reduce fumigant emissions. |
| first_indexed | 2024-03-12T15:05:41Z |
| format | Article |
| id | doaj.art-c6030828da774d658a491b2e9165071f |
| institution | Directory Open Access Journal |
| issn | 0147-6513 |
| language | English |
| last_indexed | 2024-03-12T15:05:41Z |
| publishDate | 2023-09-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ecotoxicology and Environmental Safety |
| spelling | doaj.art-c6030828da774d658a491b2e9165071f2023-08-13T04:52:02ZengElsevierEcotoxicology and Environmental Safety0147-65132023-09-01262115313Effects of soil factors on dimethyl disulfide desorption and the risk of phytotoxicity to newly-planted seedlingsXiujun Tang0Aocheng Cao1Yi Zhang2Xinhua Chen3Anmin Guo4Baoqiang Hao5Jin Xu6Wensheng Fang7Dongdong Yan8Yuan Li9Haiqun Cao10Qiuxia Wang11School of Plant Protection, Anhui Agricultural University, Hefei, Anhui Province 230036, China; State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China; Key Laboratory of Agri-products Quality and Biosafety (Anhui Agricultural University), Ministry of Education, Hefei, Anhui Province 230036, ChinaState Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, ChinaState Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, ChinaState Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, ChinaState Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, ChinaState Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, ChinaBeijing Agricultural Technology Extension, Beijing 100029, ChinaState Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, ChinaState Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, ChinaState Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, ChinaSchool of Plant Protection, Anhui Agricultural University, Hefei, Anhui Province 230036, China; Key Laboratory of Agri-products Quality and Biosafety (Anhui Agricultural University), Ministry of Education, Hefei, Anhui Province 230036, ChinaState Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, China; Correspondence to: No. 2 Yuanmingyuan West Road, Haidian District, Beijing 100193, China.Dimethyl disulfide (DMDS) is a relatively new soil fumigant used in agro-industrial crop production to control soil-borne pests that damage crops and reduce yield. The emissions of DMDS after fumigation reduce soil concentrations thus reducing the risk of phytotoxicity to newly planted crops. However, the factors affecting the desorption of DMDS from soil are unclear. In our study, the desorption characteristics of DMDS from soil were measured in response to continuous ventilation. The degradation of DMDS in soil was examined by thermal incubation. The phytotoxic response of newly-planted cucumber (Cucumis sativus) seedlings to DMDS residues was measured by a sand culture experiment. The results showed DMDS desorption and degradation rates fit a first-order model; that 92% of the DMDS desorption occurred in the first hour after fumigant application; and that residue concentrations in the soil at the end of the ventilation period were unlikely to be phytotoxic to newly-planted cucumber seedlings. By the third day of ventilation, the average desorption rate (ADR) of DMDS in Wenshan soil was 4.0 and 3.6 times, respectively, faster than that in Shunyi and Suihua soils and the ADR of DMDS in soil decreased by 40.0% when the soil moisture content increased from 3% to 12% (wt/wt). Moreover, within one hour of ventilation, the ADR of DMDS in soil decreased by 20.1% when the soil bulk density increased from 1.1 to 1.3 g cm-3. The degradation of DMDS in soil, however, was mostly influenced by soil type and moisture content. A slow degradation rate resulted in a high initial desorption concentration of DMDS in soil. Our results indicated that DMDS desorption from soil in response to continuous ventilation was affected by the soil type, moisture content and bulk density. Rapid degradation of DMDS in soil will lower the risk of phytotoxic residues remaining in the soil and reduce emissions during the waiting period. Acceleration of emissions early in the waiting period by managing soil moisture content or increasing soil porosity may shorten the duration of emissions. Alternatively, soil extraction technology could be developed to recover and reduce fumigant emissions.http://www.sciencedirect.com/science/article/pii/S0147651323008175Dimethyl disulfideSoilDesorptionVolatilizationPhytotoxicity |
| spellingShingle | Xiujun Tang Aocheng Cao Yi Zhang Xinhua Chen Anmin Guo Baoqiang Hao Jin Xu Wensheng Fang Dongdong Yan Yuan Li Haiqun Cao Qiuxia Wang Effects of soil factors on dimethyl disulfide desorption and the risk of phytotoxicity to newly-planted seedlings Ecotoxicology and Environmental Safety Dimethyl disulfide Soil Desorption Volatilization Phytotoxicity |
| title | Effects of soil factors on dimethyl disulfide desorption and the risk of phytotoxicity to newly-planted seedlings |
| title_full | Effects of soil factors on dimethyl disulfide desorption and the risk of phytotoxicity to newly-planted seedlings |
| title_fullStr | Effects of soil factors on dimethyl disulfide desorption and the risk of phytotoxicity to newly-planted seedlings |
| title_full_unstemmed | Effects of soil factors on dimethyl disulfide desorption and the risk of phytotoxicity to newly-planted seedlings |
| title_short | Effects of soil factors on dimethyl disulfide desorption and the risk of phytotoxicity to newly-planted seedlings |
| title_sort | effects of soil factors on dimethyl disulfide desorption and the risk of phytotoxicity to newly planted seedlings |
| topic | Dimethyl disulfide Soil Desorption Volatilization Phytotoxicity |
| url | http://www.sciencedirect.com/science/article/pii/S0147651323008175 |
| work_keys_str_mv | AT xiujuntang effectsofsoilfactorsondimethyldisulfidedesorptionandtheriskofphytotoxicitytonewlyplantedseedlings AT aochengcao effectsofsoilfactorsondimethyldisulfidedesorptionandtheriskofphytotoxicitytonewlyplantedseedlings AT yizhang effectsofsoilfactorsondimethyldisulfidedesorptionandtheriskofphytotoxicitytonewlyplantedseedlings AT xinhuachen effectsofsoilfactorsondimethyldisulfidedesorptionandtheriskofphytotoxicitytonewlyplantedseedlings AT anminguo effectsofsoilfactorsondimethyldisulfidedesorptionandtheriskofphytotoxicitytonewlyplantedseedlings AT baoqianghao effectsofsoilfactorsondimethyldisulfidedesorptionandtheriskofphytotoxicitytonewlyplantedseedlings AT jinxu effectsofsoilfactorsondimethyldisulfidedesorptionandtheriskofphytotoxicitytonewlyplantedseedlings AT wenshengfang effectsofsoilfactorsondimethyldisulfidedesorptionandtheriskofphytotoxicitytonewlyplantedseedlings AT dongdongyan effectsofsoilfactorsondimethyldisulfidedesorptionandtheriskofphytotoxicitytonewlyplantedseedlings AT yuanli effectsofsoilfactorsondimethyldisulfidedesorptionandtheriskofphytotoxicitytonewlyplantedseedlings AT haiquncao effectsofsoilfactorsondimethyldisulfidedesorptionandtheriskofphytotoxicitytonewlyplantedseedlings AT qiuxiawang effectsofsoilfactorsondimethyldisulfidedesorptionandtheriskofphytotoxicitytonewlyplantedseedlings |