| 摘要 |
A composition for combating nematodes and phytopathogenic micro-organisms comprises a compound having the general formula R1-S-X wherein R1 represents a hydrogen atom or the acyl group of a carboxylic acid, X represents an aliphatic or cycloaliphatic hydrocarbon group containing 3 to 9 carbon atoms, or a hydrocarbon group containing at least one thio linkage bonding aliphatic carbon atoms, or the group R-S-R11 wherein R represents a saturated or unsaturated divalent hydrocarbon group and R11 represents a hydrogen atom or the acyl group of a carboxylic acid, together with a surface active agent, or a solid carrier, or a surface active agent and a solid or liquid carrier. The acyl group which R1 or R11 may represent is derived from a carboxylic acid having the formula Rx.COOH, wherein Rx represents a hydrogen atom, a saturated or unsaturated aliphatic hydrocarbon group containing its 10 carbon atoms, or an aryl or aralkyl group, which groups Rx may be substituted with one or more halogen, cyano, nitro, hydroxyl, mercapto or carboxyl groups. Numerous thiols are specified of which typical examples are 1,2-ethane dithiol and its acetate, S-benzyl thioacetate and S-2-propynyl thioacetate. Specified forms are dusts, wettable powders, solutions and dispersions. Other ingredients which may be included in the compositions of the invention are plant hormones, fertilizers and other pesticides. Specified surface active agents are the sodium and calcium salts of high molecular weight sulphonic acids derived from sulphite cellulose wax liquors and of condensed aryl sulphonic acids and alkylene oxide condensates. Specification 862,847 is referred to.
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