title: Evaluation of the combination of dimethyl disulfide and dazomet as an efficient methyl bromide alternative for cucumber production in China.
abstract: The combination of dimethyl disulfide (DMDS) and dazomet (DZ) is a potential alternative to methyl bromide (MB) for soil disinfestation. The efficacy of DMDS plus DZ in controlling key soilborne pests was evaluated in a laboratory study and in two commercial cucumber greenhouses. Laboratory studies found that all of the combinations had positive synergistic effects on root-knot nematodes, two key soilborne fungi, and two major weed seeds. Greenhouse trials revealed that the combination of DMDS and DZ (30 + 25 g m(-2)) successfully suppressed Meloidogyne spp. root galling, sharply reduced the colony-forming units of Fusarium spp. and Phytophthora spp. on media, maintained high cucumber yields, and was not significantly different from MB or DMDS alone, but better than DZ alone. All of the chemical treatments provided significantly better results than the nontreated control. The results indicate that the combination of DMDS and DZ is an efficient MB alternative for cucumber production.
authors.affiliation: Department of Pesticides, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Ministry of Agriculture , Beijing 100193, People's Republic of China.
authors.forename: Liangang
authors.initials: L
authors.lastname: Mao
authors.forename: Dongdong
authors.initials: D
authors.lastname: Yan
authors.forename: Qiuxia
authors.initials: Q
authors.lastname: Wang
authors.forename: Yuan
authors.initials: Y
authors.lastname: Li
authors.forename: Canbin
authors.initials: C
authors.lastname: Ouyang
authors.forename: Pengfei
authors.initials: P
authors.lastname: Liu
authors.forename: Jin
authors.initials: J
authors.lastname: Shen
authors.forename: Meixia
authors.initials: M
authors.lastname: Guo
authors.forename: Aocheng
authors.initials: A
authors.lastname: Cao
mesh_terms: D000818:Animals; D002681:China; D018553:Cucumis sativus / Q000254:growth & development* / Q000382:microbiology / Q000469:parasitology; D004220:Disulfides / Q000633:toxicity*; D005658:Fungi / Q000187:drug effects; D006842:Hydrocarbons, Brominated / Q000633:toxicity*; D009348:Nematoda / Q000187:drug effects; D010571:Pest Control / Q000379:methods*; D010935:Plant Diseases / Q000382:microbiology / Q000469:parasitology / Q000517:prevention & control*; D057685:Plant Weeds / Q000187:drug effects / Q000254:growth & development; D013829:Thiadiazines / Q000633:toxicity*; D058728:Weed Control / Q000379:methods*
chemical_list: D004220:Disulfides; D006842:Hydrocarbons, Brominated; D013829:Thiadiazines; C021181:dimethyl disulfide; C005218:methyl bromide; C012864:dazomet