| 摘要 |
O-ethyl S,S-dialkyl phosphorodithioates of the formula: <IMAGE> in which one of R and R1 is an s-butyl group and the other of R and R1 is s-butyl or t-butyl, exhibiting high levels of activity against soil borne insects and nematodes and low phytotoxicity, are described and exemplified.
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