Evaluation of methyl iodide as a soil fumigant in container and small field plot studies
✍ Scribed by Becker, Jörn Ole; Ohr, Howard D.; Grech, Nigel M.; McGiffen, Milton E.; Sims, James J.
- Publisher
- John Wiley and Sons
- Year
- 1998
- Tongue
- English
- Weight
- 208 KB
- Volume
- 52
- Category
- Article
- ISSN
- 1526-498X
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✦ Synopsis
Methyl iodide was evaluated as a soil fumigant as a potential replacement for the widely used soil fumigant methyl bromide. In container trials, methyl iodide was signiÐcantly more e †ective than methyl bromide against the plant parasitic nematodes Meloidogyne incognita, Heterodera schachtii and T ylenchulus semipenetrans and the plant pathogenic fungus Rhizoctonia solani. In small Ðeld plots, soil populations of root-knot nematodes were no longer detected after methyl iodide fumigation at an application rate of 112 kg ha~1. However, after growing a susceptible lima bean host for two months, substantial root-knot galling occurred, while Rhizobium nodulation was absent. At 168 kg ha~1 of methyl iodide, root-knot galling was reduced to less than 1%, and no Pythium propagules were recovered on selective detection media. These efficacy data support the conclusion that methyl iodide is a likely candidate for replacing methyl bromide as a soil fumigant.
1998 SCI.