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Method for controlling growth of tobacco suckers
| Details |
Inventors: Nishiyama, Ryuzo; Takahashi, Ryohei; Sakashita, Nobuyuki;
Assignee: Sumitomo Chemical Company, Limited (Osaka, JA); Ishihara Sangyo Kaisha Ltd. (Osaka, JA)
Primary Examiner: Brust; Joseph P.
Assistant Examiner:
Attorney, Agent or Firm: Stevens, Davis, Miller & Mosher
Tobacco suckers can very effectively be controlled by applying a composition comprising as the active ingredient at least one phosphorothionoamidate represented by the formula: ##SPC1## Wherein R.sup.1 and R.sup.2 are independently alkyl groups having 1 to 4 carbon atoms; X is hydrogen, a halogen atom or an alkyl or alkoxy group having 1 to 4 carbon atoms; and n is an integer of 1 to 3, around portions of tobacco at which suckers are to be developed or have slightly been developed. |
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DETAILED DESCRIPTION What is claimed is: 1.
A method for controlling tobacco suckers characterized by applying around portions of the tobacco in which suckers are to be developed or have been slightly developed a composition comprising as the active ingredient 100 to 10,000 ppm of a compound selected from the group consisting of O-ethyl-O-(2-nitro-5-methylphenyl)-N-sec-butyl-phosphorothionoamidate, O-ethyl-O-(2-nitro-5-methylphenyl)-N-ethylphosphorothionoamidate, O-ethyl-O-(2-nitro-5-methylphenyl)-N-n-propylphosphorothionoamidate, O-methyl-O-(2-nitro-5-methylphenyl)-N-n-butylphosphorothionoamidate, O-methyl-O-(2-nitro-5-methylphenyl)-N-isobutylphosphorothionoamidate, O-methyl-O-(2-nitro-5-methylphenyl)-N-sec-butylphosphorothionoamidate, O-n-propyl-O-(2-nitro-5-methylphenyl)-N-isopropylphosphorothionoamidate, O-n-butyl-O-(2-nitro-5-methylphenyl)-N-isopropylphosphorothionoamidate, O-ethyl-O-(2-nitro-5-methoxyphenyl)-N-sec-butylphosphorothionoamidate, O-methyl-O-(2-nitro-4-methylphenyl)-N-sec-butylphosphorothionoamidate, O-methyl-O-(2-nitro-4-chlorophenyl)-N-sec-butylphosphorothionoamidate, O-methyl-O-(2-nitrophenyl)-N-sec-butylphosphorothionoamidate, 0-ethyl-O-(2-nitro-4,5-dimethylphenyl)-N-isopropylphosphorothionoamidate, O-ethyl-O-(2-nitro-4,5-dimethylphenyl)-N-sec-butylphosphorothionoamidate, O-ethyl-O-(2-nitro-3,5-dimethylphenyl)-N-sec-butylphosphorothionoamidate, O-methyl-O-(2-nitro-4,5-dimethylphenyl)-N-sec-butylphosphorothionoamidate, and O-methyl-O-(2-nitro-3,5-dimethylphenyl)-N-sec-butylphosphorothionoamidate, wherein the composition is applied in a proportion of 10 to 100 ml per tobacco plant.
2.
A method according to claim 1, wherein the composition is applied at the topping stage.
3.
A method according to claim 1, wherein the compound is O-ethyl-O-(2-nitro-5-methylphenyl)-N-sec-butylphosphorothionoamidate.
4.
A method according to claim 1, wherein the composition is in the form of a dispersion in water.
5.
A method according to claim 4, wherein the composition further contains a dispersing agent, a penetrant or a spreader
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Molecular Biology 
